300 as non-suppressed pistol ?

[Gray222]

I am considering putting together another ar pistol for pdw work, backpack and stuff.

I was considering a 10.xx to 11.xx 5.56 gun but I have them and they are cool and all, but i'll be getting a can or three sooner than later and will be able to run the 300 suppressed.

Anyone here run a 300 dedicated unsuppressed?

I am thinking about getting one of the BCM 9" uppers or putting one together and running a fairly higher speed ammo.

Opinions? Considerations? Experiences? Buy a 5.56 you mofo.

[TR675]

Tag for interest.

I've got a 300 sbr. My experience with it so far is limited. But, it functions (again - so far) both suppressed and unsuppressed with both subs and supers.

I've read, possibly in a post on another forum by rsilvers, that the 300 was designed to be used, and a correctly made one will function, in all four configurations. My experience bears that out. I'm sorry I can't recall the link or contribute more than dimly remembered hearsay.

Interested to hear of others' experiences.


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[GJM]

My wife and I have two AAC and two BCM 8-9ish inch barrel uppers, on SBR and AR pistol lowers. Unsurpressed with Barnes VORTX 110 grain supersonic ammo, they are of similar or less noise than a 16 inch 5.56. Like that they might penetrate a bear's skull at close range.

[Odin Bravo One]

I have shit in the safe that ignores practical application. But I don't run my BLKs unsuppressed.

[Gray222]

This will not be for plinking or anything of that nature. It will be for people/big animal shooting.

I like 300 because I will eventually have a can for it and then can run it suppressed in another config. .30 is a good caliber for people and I'd rather go with that in an AR config over a 762x39 config in an AK pistol.

[GJM]

Obviously our use is a different application compared to SeanM. My wife carries the .300 in bush aircraft, because it fits in a tiny little case, even with a bunch of ammo.

http://i250.photobucket.com/albums/gg251/GJMandes/image_zpscqmnanjl.jpeg (http://s250.photobucket.com/user/GJMandes/media/image_zpscqmnanjl.jpeg.html)

[Gray222]

Obviously our use is a different application compared to SeanM. My wife carries the .300 in bush aircraft, because it fits in a tiny little case, even with a bunch of ammo.


That's essentially what I want, maybe with a flash hider. For 100y and in engagements of people.

[Robinson]

My 16" BLK runs fine unsuppressed and so far it runs fine suppressed although I just installed the suppressor a couple weeks ago so it's way early.

No experience with SBRs.

[GJM]

http://i250.photobucket.com/albums/gg251/GJMandes/Mobile%20Uploads/image_zpsiy9lwdsp.jpeg (http://s250.photobucket.com/user/GJMandes/media/Mobile%20Uploads/image_zpsiy9lwdsp.jpeg.html)

http://i250.photobucket.com/albums/gg251/GJMandes/Mobile%20Uploads/image_zpsnnbkrr2z.jpeg (http://s250.photobucket.com/user/GJMandes/media/Mobile%20Uploads/image_zpsnnbkrr2z.jpeg.html)

[Gray222]

GJM, what ammo do you normally run ?

[GJM]

GJM, what ammo do you normally run ?

We are zeroed with Barnes VOR-TX, which uses the 110 GR TAC-TX bullet. We picked that load, because we thought that bullet would give us the best chance of penetrating a grizzly skull. We have shot between 500 and 1,000 rounds of that load through our various uppers, and it has always functioned. For practice, we have been shooting SIG Lite 125, as it is cheaper, although mostly for practice we just shoot a 5.56 upper.

One consideration is the 50/220 or 1 inch low at 50 on at 200, doesn't hold true for .300. We zero for 50, and it is low at 200, but that works for our intended use for this set-up.

[GJM]

Probably not your consideration, but my wife wanted something very light and compact, but with lots of ammo, if she got stuck or crashed down on the AK Peninsula, around a bunch of bears. Her analysis was 150 rounds of .300 might be better than her 14 inch Benelli and 10 slugs in that situation. When you are working 200 feet on top of a ridge, every pound matters.

http://i250.photobucket.com/albums/gg251/GJMandes/image_zps2gr4zdra.jpeg (http://s250.photobucket.com/user/GJMandes/media/image_zps2gr4zdra.jpeg.html)

[Gray222]

Probably not your consideration, but my wife wanted something very light and compact, but with lots of ammo, if she got stuck or crashed down on the AK Peninsula, around a bunch of bears. Her analysis was 150 rounds of .300 might be better than her 14 inch Benelli and 10 slugs in that situation. When you are working 200 feet on top of a ridge, every pound matters.


I agree, in terms of light guns and high round count. Right now I carry around my pws diablo'd upper sbr with about 200ish rounds and its a pain in the balls, especially since I have different ammo types. I'd rather have a dedicated anti-person round, TSX is very good for this.

My thought process is that a 300 will be better suited for 0-100ish yard engagement, specifically around 30-75y.

[Gray222]

just in case anyone is interested....ballistic advantage has an 8" barrel on sale right now, with a pinned gas block its $189 shipped which is super cheap. I ordered one for this build along with a MI g3 keymod rail and some other stuff.

going to order some ammo too. will update as I get things put together.

[orionz06]

Snagged a Noveske 10.5" with NSR rail for cheap. Kinda funny how I skipped over this thread and wound up at the same point concurrently with others.

[drjaydvm]

http://uploads.tapatalk-cdn.com/20160926/c7aabf92c196cf10633a226399ef7ca0.jpg

8.5 inch barrel 300 blk SBR. With the law folding stock adapter it is super compact for storage. Tac-tx 110 about 2100 fps, about 100 fps faster with my hand loads.

[Gray222]

http://uploads.tapatalk-cdn.com/20160926/c7aabf92c196cf10633a226399ef7ca0.jpg

8.5 inch barrel 300 blk SBR. With the law folding stock adapter it is super compact for storage. Tac-tx 110 about 2100 fps, about 100 fps faster with my hand loads.

What do you plink/function check with?

[StraitR]

What do you plink/function check with?

I had good luck with Fiocchi 150gr (300BLKC).

[Gray222]

I was thinking of getting a box or two of the Sig rounds for function check it.

[orionz06]

What brace/tube is the one I want?

[HCM]

What brace/tube is the one I want?

It's an SBR - that is the Troy Battle axe stock.

https://troyind.com/products/lightweight-battle-ax-cqb-stock-tan

There's even a version with a GPS built in: https://troyind.com/products/gps-nav-stock-wgarmin-gps-tan

[MistWolf]

VDM, there's nothing wrong going with a 300 BLK for your intended use. Supersonic loads will give you ballistics similar to the 7.62x39 and we know that cartridge works. Downside compared to 7.62x39 is ammo cost. Upside is the 300 offers a better selection of ammo.

You've seen and shot the Wolf Pup, the shorty I had the summer I was out in your part of the country. It's got a 10.5 inch barrel, is chambered for 5.56 and it's easy to make hits with it out to 200 yards with the Aimpoint. Trajectory is pretty flat out to 200 yards. It does starting to drop off noticeably at 300, but it's still doable and it's still a flatter trajectory than the 300 and the 7.62x39.

For the most part, bullet construction is more important to terminal performance than bullet diameter but bullet construction isn't as critical with a fatter, heavier bullet. What all this means is, it doesn't matter if you choose to go with the 300 BLK or the 5.56. Both will work.

You don't have to suppress a 300 BLK anymore than you do the 7.62x39 the 30-30 or the 30 Carbine. An unsuppressed 300 made to be as short overall as possible will be a good choice.

Or, you could go with the pistol version of the Galil Ace in 7.62x39

[SteveB]

I also tapped the BKT as covert carry rifle, and have a BCM pistol setup waiting for me in FL. I've been talking to some guys about hog hunting in the Everglades; apparently that Barnes 110 gr bullet works really well on hogs:

http://www.thetruthaboutguns.com/2013/11/foghorn/ammo-review-barnes-300-aac-blackout-110gr-tac-tx/

I like that the SBR will fit into a pack, and, with a can, is no longer than a 16" AR:

10811

10812

[Gray222]

VDM, there's nothing wrong going with a 300 BLK for your intended use. Supersonic loads will give you ballistics similar to the 7.62x39 and we know that cartridge works. Downside compared to 7.62x39 is ammo cost. Upside is the 300 offers a better selection of ammo.

You've seen and shot the Wolf Pup, the shorty I had the summer I was out in your part of the country. It's got a 10.5 inch barrel, is chambered for 5.56 and it's easy to make hits with it out to 200 yards with the Aimpoint. Trajectory is pretty flat out to 200 yards. It does starting to drop off noticeably at 300, but it's still doable and it's still a flatter trajectory than the 300 and the 7.62x39.

For the most part, bullet construction is more important to terminal performance than bullet diameter but bullet construction isn't as critical with a fatter, heavier bullet. What all this means is, it doesn't matter if you choose to go with the 300 BLK or the 5.56. Both will work.

You don't have to suppress a 300 BLK anymore than you do the 7.62x39 the 30-30 or the 30 Carbine. An unsuppressed 300 made to be as short overall as possible will be a good choice.

Or, you could go with the pistol version of the Galil Ace in 7.62x39

I have a 556 pws pdw sbr but I don't want to carry that thing around anymore since its pretty expensive and I'd rather have a 30 cal unsuppressed short pistol.

I wanted 300 blk specifically because it will work well with an 8 inch barrel unsuppressed for my purposes (concealment and superiority in fire power).

At 8 inches the gun won't weigh much and as a pistol I can carry it loaded anywhere in my state.

[orionz06]

At 8 inches the gun won't weigh much and as a pistol I can carry it loaded anywhere in my state.


Any state... that's the big thing for me, any state on a whim without dealing with the proper travel form for an sbr.



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[GJM]

FIFY


MAny states... that's the big thing for me, any state on a whim without dealing with the proper travel form for an sbr.



Sent from my iPhone using Tapatalk

[drjaydvm]

The fiocchi 150 fmj work fine. I handload 110 Speer varminters (really cheap and accurate), 125 Hornady sst for plinking. If you haven't seen the law folding stock adapter, it works pretty well.

[JM Campbell]

125gr Speer tnt with 18gr IMR 4227 shoot almost to the exact poi as 130gr hog hammers out of my 9.5 AAC barrel kit. Grafs usually has a 500ct pack on sale for $89.00, regular price is $99.00 iirc.

That is my standard plinking load for my 300blk.

At 300 yards with my 1-4x nightforce torso shots with holdover are no problem. Ringing steel with a short barreled/suppressed upper is fun.

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[MistWolf]

I wanted 300 blk specifically because it will work well with an 8 inch barrel unsuppressed for my purposes (concealment and superiority in fire power)

You've answered your question. It's generally accepted that the 300 BLK works better than the 5.56 when the barrel is shorter than 10 inches. I've been looking into the Galil Ace with a brace because it's 7.62x39

http://www.atlanticfirearms.com/images/stories/virtuemart/product/resized/galilpistol%20(15%20of%2016)_250x200.jpg
http://www.atlanticfirearms.com/images/stories/virtuemart/product/resized/galilpistol%20(14%20of%2016)_250x200.jpg

But it does cost more than an AR.

SB has been very busy coming out with new brace designs. One of the newest is a PDW style developed with Maxim. Unfortunately, I can't find much more information on it than that. https://www.gunsamerica.com/blog/sb-tactical-debuts-maxim-defense-stabilizing-brace-nra-2016/

SB has come out with sleeker versions since the release of the original. I replaced the original with the Galil brace which was intended for AKs. I had to wrap the RE in gaffer's tape to get it to fit tightly, but it's worked very well since

Here's the Wolf Pup in it's current configuration
http://i115.photobucket.com/albums/n289/SgtSongDog/Lil%20Wolf%20Pup/wolfpaint004_zpsbjk2mapx.jpg

I've also shot it with a 16 inch upper installed and it works well as a stock. Configured as a rifle, LOP is a little short but I also have long arms. I'm contemplating switching to an A5 RE. I've put many rounds through the AR shorty and have been well pleased with the performance of the SB Galil Arm Brace. It's not only sleeker than the original, but 4 ounces lighter. I can highly recommend it. The only reservation is that I needed gaffer's tape to make it fit tightly.

If you want to see what SB Tactical offers, this is their website https://www.sb-tactical.com/
Atlantic Firearms also carries SB braces http://www.atlanticfirearms.com/

I've yet to try the Blade but it's thin. If one were to run it as a stock using a 16 inch upper, I think the way it would concentrate recoil, it might get uncomfortable after awhile

[entropy]

I will join the post bandwagon too. I recently picked up an 8" .300 upper for many of the same reasons listed. The biggest is the ability to treat it as a pistol and have it loaded in a vehicle as well as travel state to state without restrictions. I travel a lot. Im currently running it with a simple Thordsen device along with a saddle. I have an original Sig Brace, but find it a bit bulky. Its certainly a handloaders game and Ive been experimenting with 110gr thru 175gr. Currently Im concentrating on using 1680 as a powder.

You just cant beat the portability of it. And unlike the 5.56, you can go sub 10" on the barrel and still have something effective out to 150yds or so. The only downside is that its still more of a "boutique round" and your not going to find ammo at your local rural hardware store. In its niche however, it is pretty solid.

[vaspence]

I also jumped on the bandwagon a few weeks ago. The SBR is wearing a factory .300 Aero 8" upper and an SDN-6. The bottom rifle is a Noveske factory 16" .300 upper. I set the 8" up for my 8yo to shoot his first whitetail and he's good out to 50 yards with the Aimpoint and Barnes 110s (unsuppressed, gun is too heavy for him with suppressor). The gun/sight combo is good to 100 with this load and the Hornady Vmax 110.

10821

[JM Campbell]

I will join the post bandwagon too. I recently picked up an 8" .300 upper for many of the same reasons listed. The biggest is the ability to treat it as a pistol and have it loaded in a vehicle as well as travel state to state without restrictions. I travel a lot. Im currently running it with a simple Thordsen device along with a saddle. I have an original Sig Brace, but find it a bit bulky. Its certainly a handloaders game and Ive been experimenting with 110gr thru 175gr. Currently Im concentrating on using 1680 as a powder.

You just cant beat the portability of it. And unlike the 5.56, you can go sub 10" on the barrel and still have something effective out to 150yds or so. The only downside is that its still more of a "boutique round" and your not going to find ammo at your local rural hardware store. In its niche however, it is pretty solid.
Walmart carries 300blackout ammo, at least in my location.

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[Mike C]

Walmart carries 300blackout ammo, at least in my location.

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To add to what JM said. It's everywhere here. Plus I have found a source for projectiles that I can now load for the same price I was loading my 55 gr 5.56mm. I hope that it continues to be this affordable. I have essentially gone to nothing but 300blk and 308.

[vaspence]

My apologies for just posting pics and not addressing the post.

I like the gun unsuppressed, not to loud or blasty and will probably hunt with it a bit myself this season to see how it is. That said, it just calls to be suppressed and the super stuff through the can is nice. I haven't shot more than a few subs through it just to listen but have some 208 Amax bullets I'm going to try. I'm very interested in how the gun sounds suppressed to others 500+ yards away for varmint hunting at night near farmhouses.

Ammunition wise I'm going to run the 110 Barnes Tac Tx through both AR 300s this season. That will remain the business load for both rifles. My cousins have killed multiple decent mountain bucks with the 110 Vmax for a couple of years inside 100 yards with no trouble so I'll probably try them on a deer also. Ideally I'll reload a sub and plinking load that will be good enough for practice.

[entropy]

I agree with the blast. I feel my 11.5" 5.56 has a much sharper blast/crack to it compared to the .300 which has an 8" barrel and plain jane A2 up front. I'm going to pick up a box of the 110gr Barnes to load as well. It seems to be a very good projectile for the supers. I have a good supply of 175smk blems and also a large numer of 165gr flat base soft points that I'm hoping to utilize for practice use. Ive still yet to nail a load down with either. Hopefully within the next week or two. My next decision is whether this upper is worthy of optics beyond the Aimpoint that curtently sits on top. Part of me says "no", but the old fart eyes part of me screams for a 1x6 of some kind. Whether or not this takes away from the utility of it all remains to be seen. Ive tossed a 10x on it for load development however. I havent been this keyed up about a new tool in quite a while though.

[JM Campbell]

I agree with the blast. I feel my 11.5" 5.56 has a much sharper blast/crack to it compared to the .300 which has an 8" barrel and plain jane A2 up front. I'm going to pick up a box of the 110gr Barnes to load as well. It seems to be a very good projectile for the supers. I have a good supply of 175smk blems and also a large numer of 165gr flat base soft points that I'm hoping to utilize for practice use. Ive still yet to nail a load down with either. Hopefully within the next week or two. My next decision is whether this upper is worthy of optics beyond the Aimpoint that curtently sits on top. Part of me says "no", but the old fart eyes part of me screams for a 1x6 of some kind. Whether or not this takes away from the utility of it all remains to be seen. Ive tossed a 10x on it for load development however. I havent been this keyed up about a new tool in quite a while though.
Nightforce 1-4x with the fc2 recticle works great for 300blk.

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[entropy]

Spent the day at the bench loading an assortment of 175gr SMKs, the 165gr CorLokt soft points, and some 110gr V-Max. I used 1680 for the heavier ones and both 2400 and H110 for the V-Max. Loaded the SMKs per Sierra's formula and the 165s beginning at 2.200" down in increments to 2.08" which is where the cannulure comes into play. I used Nosler's data for the V-Max loadings. Hopefully get out next week or so to see how they shoot.

Toyed with the upper a bit after dinner. The 11.5" .5.56 has BUIS, a red dot, and a TLR-1 on the side. I tried some different configurations and lights but that seems about right for the 8" .300 as well. I need to shoot it more to see. The plan is to put a 10x on it for load work (yea...it looks goofy) then decide whether its worth a magnified optic or stick with the Aimpoint.

The whole thing (either upper) fits nicely in a soft sided canvas violin case which just gives me the giggles.

[Gray222]

While I would normally advocate a variable magnified optic for any gun that may be used on people for a 300 the purpose is generally 100 and in, really focusing on the 50y and in range. At that range anyone should be able to PID even with an RDS.

[pdb]

If you're going to forgo the suppressor for the moment, look into a linear compensator like the Kaw Valley or BRT. My 10" .300 pistol was extremely pleasant to shoot with that installed. Not ear safe by any means, but it makes a big difference to the shooter.

[Gray222]

If you're going to forgo the suppressor for the moment, look into a linear compensator like the Kaw Valley or BRT. My 10" .300 pistol was extremely pleasant to shoot with that installed. Not ear safe by any means, but it makes a big difference to the shooter.

prolly a gemtech muzzle device...

[entropy]

I had put a Pig on the 5.56 and wasnt impressed. While it certainly changed the "tone" of the report, it also degraded the accuracy quite a bit. I ended up replacing it with a Phantom, and ultimately a simple A2 which is what is on there now. I would like to try a SF Warden on it but trying to find one is a task in itself. Every gun is different obviously, and maybe the stubby 8" would have different harmonics. A can is in the plan, but a bit down the road for a number of reasons.

Sitting last night I realized I didnt load any subs up. Maybe trynto work a few up today or tomorrow using the 175s and 1680. Im FAR more interested in the 165s since I have about 2K of them sitting in a box on the bench.

[Gray222]

ok...got all my stuff, gana put it together in the next few days.

Looking for an optic to throw on it, thinking just transplant my MRO on to it.

Any considerations? Just get another t1/t2 type? PRO?

Engagement distance will not be over 100y, probably 75y realistically.

[Wondering Beard]

Looking forward to your assessment as I'm now wondering about getting something like that for similar purposes.

Is there a muzzle device that works well enough to project noise/blast more forward for this type of pistol?

As to optics, considering the weight factor for a handy pistol, wouldn't an H1/H2 be better for that role than the heavier PRO?

[Gray222]

Looking forward to your assessment as I'm now wondering about getting something like that for similar purposes.

Is there a muzzle device that works well enough to project noise/blast more forward for this type of pistol?

As to optics, considering the weight factor for a handy pistol, wouldn't an H1/H2 be better for that role than the heavier PRO?

H1 may work well, when I say t1/2 I automatically mean h1/2 as well.

Muzzle device will be a Gemtech 30cal bilock so I can use a black jacket and later suppress it.

[entropy]

Buffer weight/sping also depends on the port size. My 8" upper was set up to run both subs and supers. So far, the factory rounds Ive shot have fed and ejected without issue. Im not sure on the handloads tho. Will know next week. Some folks are running a linear comp on them as opposed to a blast jacket type set up. Mine just has the A2 for now. The concussion has not been bad at all. Like stated, significantly less than an 11.5" 5.56.

Ill post my loads and results next week. I found an online place to buy bulk Barnes 110gr TSX pull-downs. Expect those in the mail tomorrow. Hopefully have time to load up a charge test of those to bring with too.

[drjaydvm]

I have a spikes barking spider 2 on mine. It's a krink type device that adds some back pressure

[Wondering Beard]

H1 may work well, when I say t1/2 I automatically mean h1/2 as well.
I figured that out right after I hit 'send'. Mostly I was thinking of the weight issue.



Muzzle device will be a Gemtech 30cal bilock so I can use a black jacket and later suppress it.

I tried to google that and all I got were suppressors.

I seem to remember you posting a photo of a muzzle device on an SBR that looked like an punched through cupcake with the name of Diablo maybe (I''m not at all up on muzzle devices besides the A2)? How does that work for projecting blast and noise forward?

[Gray222]

Buffer weight/sping also depends on the port size. My 8" upper was set up to run both subs and supers. So far, the factory rounds Ive shot have fed and ejected without issue. Im not sure on the handloads tho. Will know next week. Some folks are running a linear comp on them as opposed to a blast jacket type set up. Mine just has the A2 for now. The concussion has not been bad at all. Like stated, significantly less than an 11.5" 5.56.

Ill post my loads and results next week. I found an online place to buy bulk Barnes 110gr TSX pull-downs. Expect those in the mail tomorrow. Hopefully have time to load up a charge test of those to bring with too.

110 tsx is probably going to be my go to for use. Plinking will be something cheap.

If you want to spare some lmk price ;)


I figured that out right after I hit 'send'. Mostly I was thinking of the weight issue.




I tried to google that and all I got were suppressors.

I seem to remember you posting a photo of a muzzle device on an SBR that looked like an punched through cupcake with the name of Diablo maybe (I''m not at all up on muzzle devices besides the A2)? How does that work for projecting blast and noise forward?

The pws cqb is a sweet muzzle device, I may end up going to it for this but it's heavy.

[entropy]

Well.....here ya go!

https://www.americanreloading.com/en/30-caliber-rifle-bullets/855-308-110-grain-black-ballistic-tip-projectiles-250-ct.html

[johnson]

Have you read any accuracy reports with the Ballistic Advantage barrels? The only difference they state between the Modern and Performance is what the feed ramp extension is coated with :eek: and the Premium is 416 stainless vs 4150. I have a 12.5" 5.56 barrel that will shoot <1.5" @ 100 yards and it'd be nice to have an 8" 300 BLK that can do the same.

Right To Bear has the barrels on sale for $120 and BA has the 8" Modern w/ pinned GB for $170.

http://www.righttobear.com/Ballistic-Advantage-8-Barrel-300-Blackout-p/babl300001m.htm

http://ballisticadvantage.com/8-inch-300-blackout-pistol-cmv-modern-barrel.html

[entropy]

Barnes 110gr pulls showed up today. Package of 250 had about 260 actual bullets in it. About a dozen damaged with broken or crooked tips. Another dozen or so were actually 120gr black tips. The rest look good with minor pull marks here and there. Nothing serious. Not premium packaged first runs, but they ARE Barnes black tips so for the price, Im happy. See pic below.

https://s9.postimg.org/8mgzwwrun/image.jpg (https://postimg.org/image/a1iklmsxn/)

[entropy]

Got the opportunity today to do some shooting and testing with the .300. Below is the results using the black tip "pulls" and H110. Started at the top with 18.8, then 19.1, then finally 19.4gr. I was seeing somempressure signs at 19.7 with flat primers, so I stopped there until I investigate a bit. Velocity was 2064fps from my 8" upper running a DA of about 2200' today in the great north.

It certainly seems like a viable alternative to the 11.5" 5.56. Barnes says it will expand down to 1300fps which equates to over 300yds with todays weather. Thats quite a bit further than I can guarantee hits from a 8" barrel.







https://s11.postimg.org/hsfuzttwz/image.jpg (https://postimg.org/image/pl6irszvz/)

[Gray222]

Got the opportunity today to do some shooting and testing with the .300. Below is the results using the black tip "pulls" and H110. Started at the top with 18.8, then 19.1, then finally 19.4gr. I was seeing somempressure signs at 19.7 with flat primers, so I stopped there until I investigate a bit. Velocity was 2064fps from my 8" upper running a DA of about 2200' today in the great north.

It certainly seems like a viable alternative to the 11.5" 5.56. Barnes says it will expand down to 1300fps which equates to over 300yds with todays weather. Thats quite a bit further than I can guarantee hits from a 8" barrel.







https://s11.postimg.org/hsfuzttwz/image.jpg (https://postimg.org/image/pl6irszvz/)

Keep this coming please, I'd like to figure out the optimum load for an unsuppressed 8" 300 using the TSX rounds.

[drjaydvm]

8.5 inch barrel
19.2 gr W296
2150 fps
Tac-tx 110

[Wondering Beard]

Since we're talking about barrel length, what is the optimum length for a .300 BLK pistol to have both reliability and make the most out of the ammo's effectiveness (I'd be looking for barrier blind ammo in a more urban environment, not likely to be used further than 75 yards)? is it 10", 9", 8.5", less?

[Gray222]

Since we're talking about barrel length, what is the optimum length for a .300 BLK pistol to have both reliability and make the most out of the ammo's effectiveness (I'd be looking for barrier blind ammo in a more urban environment, not likely to be used further than 75 yards)? is it 10", 9", 8.5", less?

Everyone I've talked to on the matter has told me that unless I'm lookin for 150y plus distance something short would work well.

I went with 8" because I wanted an RDS type setup not be used further than 75y....more likely cqb only distance.

[JM Campbell]

AAC/aka Silvers the designer states that the 9.5" is ideal but can go down extremely low if more then a 1/7 twist is used.

*ideal for super and sub using pistol gas for best reliability.

AAC sbr is a 9.5" barrel with pistol gas.

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[entropy]

Everyone I've talked to on the matter has told me that unless I'm lookin for 150y plus distance something short would work well.

I went with 8" because I wanted an RDS type setup not be used further than 75y....more likely cqb only distance.


Would you post a pic of that?? Im on the fence between a scope type optic and an RDS type set up. Something like an RMR might really be the ticket.

[JM Campbell]

http://uploads.tapatalk-cdn.com/20161012/661f133044616496a3da513965deb98f.jpg

8" pistol 300blk with a dual illuminated rmr.

Sent from my SAMSUNG-SM-N900A using Tapatalk

[Mike C]

Got the opportunity today to do some shooting and testing with the .300. Below is the results using the black tip "pulls" and H110. Started at the top with 18.8, then 19.1, then finally 19.4gr. I was seeing somempressure signs at 19.7 with flat primers, so I stopped there until I investigate a bit. Velocity was 2064fps from my 8" upper running a DA of about 2200' today in the great north.

It certainly seems like a viable alternative to the 11.5" 5.56. Barnes says it will expand down to 1300fps which equates to over 300yds with todays weather. Thats quite a bit further than I can guarantee hits from a 8" barrel.


https://s11.postimg.org/hsfuzttwz/image.jpg (https://postimg.org/image/pl6irszvz/)


Entropy are you running them mag length? Asking because thats what it looks like according to your velocities and charge weights. I am in the planning stages on the same thing right now using quick load. I just ordered a bunch of the pulled tips from probably the same place. I think I'll be happier with my loads than the anemic factory stuff. What distance where you grouping at and have you notice more dispersion in the groups as you've moved up near max pressures or did you see them slim down at all? Also wondering if you've looked at using lil'gun. Looking at everything I think I might be able to break 2100fps with it out of my 9" barrel though I don't want to squeeze every little bit of velocity at the tradeoff of accuracy I guess I'll find out soon enough. Thanks for posting your info and please keep it up, it will be nice to be able to compare my data with yours once my projectiles get here.

[ragnar_d]

AAC/aka Silvers the designer states that the 9.5" is ideal but can go down extremely low if more then a 1/7 twist is used.

*ideal for super and sub using pistol gas for best reliability.

AAC sbr is a 9.5" barrel with pistol gas.

9.5" was my choice for a build that's in process for similar reasons. FWIW, KAC landed on 9.5" for their SR-30 as well.

[Gray222]

Would you post a pic of that?? Im on the fence between a scope type optic and an RDS type set up. Something like an RMR might really be the ticket.

still waiting on a muzzle device so its sans that and an optic right now...will post in the next few days (hopefully muzzle device will get here)

[drjaydvm]

http://uploads.tapatalk-cdn.com/20161013/00854488d93a7cf059e6d7ace8b77d87.jpg
Midwest Industries RMR mount.

[drjaydvm]

http://uploads.tapatalk-cdn.com/20161013/e152ee8b3be7c01c1f74a3411b30d748.jpg
Law folding stock adapter

[drjaydvm]

http://uploads.tapatalk-cdn.com/20161013/b7e1e6bcee3120cf37f93ca466cb6eeb.jpg
Spikes Barking Spider 2 muzzle device

[entropy]

Appreciate the RMR pics. I have an Aimpoint on the 11.5" 5.56 and am currently running an older ML on the .300 until I decide. Iv been back and forth between the RMR and the scope. Cant decide where I want to take this.

The group is 75yds. I am loading per the Barnes manual for charge and COAL. The groups did shrink as charge weight went up as you can see in the pic. Thats another reason I would like to revisit the higher charge weights. No, I havent tried Lil Gun. From the data Ive found it does appear to produce generally lower pressures.

[Gray222]

I am, too, considering an RMR for it. I have an RM06 which I might use and get a 1moa rmr for a glock...

I'm also considering a holosun but that's still up in the air.

I might just default an H1/2 2moa just because they are awesome.

[entropy]

i like the idea of the smaller size of the RMRs. They usually have 3-4 MOA dots tho,mfrom what Ive seen. Id like to have more precision further out. Then there are my 53 year old astigmic eyes...but thats another issue.:cool:

[MistWolf]

I have an Aimpoint with a 4 MOA dot. It's width is less than the front sight post

[Phrog107]

Everyone I've talked to on the matter has told me that unless I'm lookin for 150y plus distance something short would work well.

I went with 8" because I wanted an RDS type setup not be used further than 75y....more likely cqb only distance.


I think you are on the right track going to an 8".

I setup a 10.3" for a similar purpose; spontaneous travel across state lines, concealed backpack setup (PDW), etc. It's technically setup as a SBR, but I also keep a spare pistol lower on hand for it for the above purposes.

My one regret was not going shorter, a 7.5"-8.5" would be ideal.

I'm also using the Barnes 110gr Blacktips. Seems to be the ideal round for this setup. I've been considering getting another shorter barrel, and starting a new build, but with the election coming up, i've been focusing on getting ammo and mags. I'll get around to it eventually.

[Mike C]

Appreciate the RMR pics. I have an Aimpoint on the 11.5" 5.56 and am currently running an older ML on the .300 until I decide. Iv been back and forth between the RMR and the scope. Cant decide where I want to take this.

The group is 75yds. I am loading per the Barnes manual for charge and COAL. The groups did shrink as charge weight went up as you can see in the pic. Thats another reason I would like to revisit the higher charge weights. No, I havent tried Lil Gun. From the data Ive found it does appear to produce generally lower pressures.

Thank you.

[43Under]

Voodooman, did you ever finish this thing?

I'm considering a similar build and so was wondering how it turned out.

[orionz06]

Just snagged a LAW folding adapter and have two more pistol lowers ready to roll. Gonna go with a 10.5 300WTF, 8.5 300WTF or a shorter 9mm, and a 11.5 5.56.

[Gray222]

Voodooman, did you ever finish this thing?

I'm considering a similar build and so was wondering how it turned out.

I did. Just working out some kinks and trying to source a muzzle device.

[43Under]

I did. Just working out some kinks and trying to source a muzzle device.

Cool. Will look forward to a final report. Thanks for responding!

[Gray222]

12521

Done.

Lollllll