View Full Version : My Glockworx G20SF USPSA Limited Build
I have posted this on other forums, but I'm new here, so I thought I'd take the opportunity to shamelessly post it again. Here's my copied & pasted posts:
Here's my G20SF USPSA Limited build.
KKM 10mm-40 Barrel
Sevigny Competition Rear Sight
Dawson Precision Black .115" x .255" Front Sight
Zev Tech Speed Feed Magwell
Zev Tech Extended Mag Release
Glockworx Standard Stippling
Finger Groove Removal
Double Undercut Trigger Guard
I also threw on the LWD G20LS just to see what it would look like.
http://i29.photobucket.com/albums/c297/rabara9/9860c82f.jpg
http://i29.photobucket.com/albums/c297/rabara9/9286e630.jpg
http://i29.photobucket.com/albums/c297/rabara9/3e338dbb.jpg
http://i29.photobucket.com/albums/c297/rabara9/c821fc60.jpg
http://i29.photobucket.com/albums/c297/rabara9/e5f098b4.jpg
I got my first chance to shoot the finished product, and to say the least I'm impressed. It was just a quick trip to Barnwood Arms in Ripon, so only slow fire at an indoor range. I put 200rds of my 40 Major reloads through it without a hiccup, and all my mags w/Arredondo extensions functioned flawlessly with 20 + 1. Here are my impressions so far:
1. The stippling is money. It's so good, I'm considering sending ALL my Glocks to Glockworx for the same treatment. It's extremely grippy (if that's even a real word), but not so rough that it chews up my hands. The undercuts & FG removal feel better than any of my other Glocks, and allow me to comfortably get an even higher grip.
2. The G20SF is an awesome platform for a USPSA Limited gun. The larger grip fits my hands perfectly, and distributes the recoil much better than the small frame G22/35. The additional slide mass makes this gun an absolute pleasure to shoot. It's VERY soft shooting, but not so soft that it feels sluggish.
3. The Zev Tech Magwell is awesome. It's so easy to reload, it's like cheating. It also makes my grip nice & snug, which makes aiming much more stable. I know that's the whole point of a magwell, but it's my first gun with one, so its new to me.
4. I initially had the Sevigny Competiton front (.215 x .115). It was impacting higher than POA, so I used Dawson Precisions formula to calculate the sight height needed to have the POA/POI I wanted. Dave Dawson is good, it worked perfectly. The calculation said I needed a .255" high front to correct the issue, and it was DEAD ON. All my other Glocks have the .215" high front, and they work great, but this combo didn't like it. I'm glad I used the DP formula & bought a taller front sight.
5. The Arredondo extensions worked flawlessly. I loaded them each with 20rds (+1) and they cycled several times each without any issues. Some guys have issues with the follower hanging up while loading 20rds, but mine worked great even with 20+1. No mag or follower mods needed in my gun, so I'm a happy camper.
6. The KKM 10-40 barrel was perfect as well. Having them finish ream it to feed long loaded 40 rounds definitely paid off. It ate my 40 reloads @ 1.2" OAL like nothing, and I reload Glocked brass without using a pass-through die.
I can't say enough about KKM, Glockworx & Arredondo. Great companies, great customer service & great products. I can't wait to shoot my first match in Limited class with it!
I have one of the first Gen 4, Glock 20's for use as protection against critters. I think the G4 is an improvement over a stock 20/20SF as I like the G4 frame texture, mag release, and new RSA for use with heavy loads. It has been very accurate, reliable after I removed the Vickers slide stop which was having premature lock backs with heavy loads, and subjectively feels softer shooting than the G3. Slightly different niche for my 20 than how you use your pistol. :)
I have one of the first Gen 4, Glock 20's for use as protection against critters. I think the G4 is an improvement over a stock 20/20SF as I like the G4 frame texture, mag release, and new RSA for use with heavy loads. It has been very accurate, reliable after I removed the Vickers slide stop which was having premature lock backs with heavy loads, and subjectively feels softer shooting than the G3. Slightly different niche for my 20 than how you use your pistol. :)
I built this bad boy for the same reasons you have your GEN 4, (I have 2 G20SF's). My Woods Defense/Hunting handload is a 200gr WFNGC @ 1360fps. I also have a 9x25 Dillon barrel for it, and have a handloaded 90gr XTP that averages 2050fps.
http://i29.photobucket.com/albums/c297/rabara9/Mobile%20Uploads/IMG_4635.jpg
I have a GEN 4 G21, and plan to buy a GEN 4 G20 as soon as they hit the west coast. I agree with all of your impressions of the large frame GEN 4's, but I actually prefer this grip over my GEN 4 G21. It's probably more about the FG removal & undercuts, but I also like the stippling better than the GEN 4 texture (which I would have never thought possible). I love my GEN 4's.
I will be curious if the 200 @1,360 load is reliable, as the Buffalo Bore heavy penetrator load will not run in my G4 20 or multiple other G20/SF pistols.
I will be curious if the 200 @1,360 load is reliable, as the Buffalo Bore heavy penetrator load will not run in my G4 20 or multiple other G20/SF pistols.
I put about 100rds of 800X load development through my gun (and another 100rds using Longshot & Blue Dot) until I settled on this one. It runs exactly like its supposed to, no problems whatsoever. My G20LS is packing another 4oz of slide mass compared to a factory G20 slide, and I'm running a 22# ISMI spring, so that could be part of the reason.
What do you mean by will not run?
Slide locking back with rounds in the magazine or feeding stoppages. Same with the Wolff guide rod and extra power spring.
Slide locking back with rounds in the magazine or feeding stoppages. Same with the Wolff guide rod and extra power spring.
That sucks, but I don't care for that round anyway. The $3 per round price tag is ridiculous, and it's just a heavy Lead Truncated Cone bullet. Even though DT's 200gr WFNGC will only get about 1150fps out of a stock G20 (advertised 1300fps), it's still a great woods load. That bullet @ 1150fps is more than enough power for anything a 10mm is big enough to handle. If Underwood ever makes a 200gr WFNGC load, I'd definitely buy some even though I roll my own. I had a similar issue with a Wolff spring/guiderod before I switched to ISMI. The outside diameter of the Wolff is larger, and it was stacking & binding against the bottom of my barrel. I'm guessing you're not thumbing the slide stop, so that's out. What other loads/ammo have you run through it?
I shot a half dozen various loads thru the G20, when I was doing the initial shooting to assess reliability after getting it. For the last few years, I have settled on the Barnes 155 JHP in either DT or Corbon, as my soft point, and the DT 200 FMJ penetrator load as my woods load. Those loads run in every 29 and 20 we have. I wish there was a HST or Ranger soft point for the 10mm.
Kyle Reese
07-26-2012, 11:53 AM
Very nice pistol, MEAT.
I shot a half dozen various loads thru the G20, when I was doing the initial shooting to assess reliability after getting it. For the last few years, I have settled on the Barnes 155 JHP in either DT or Corbon, as my soft point, and the DT 200 FMJ penetrator load as my woods load. Those loads run in every 29 and 20 we have. I wish there was a HST or Ranger soft point for the 10mm.
The 200gr WFNGC is a MUCH better woods load than a 200gr FMJ. The FMJ TC profile will just slip through, and not cause significant damage in its path. Plus they tend to deflect when they hit bone. The wide nose of the 200gr WFNGC hits like a freight train, and creates a NASTY wound channel. It chomps through bone like a cookie cutter, and will make a larger permanent & temporary wound cavity. That's why most 44mag/45LC/454C guys load that type of bullet for bear defense. Even if you're worried about lead in a factory Glock barrel, which you shouldn't be, you won't shoot enough of them to lead up a barrel before cleaning. I shot 50rds of DT's 200gr WFNGC through a stock G20SF, and had no leading or any other issues. That 155gr Barnes bullet does make an excellent carry load, although I prefer the 175gr Silver Tip & Underwood's Delta Elite 180gr Gold Dot load (1240fps).
Very nice pistol, MEAT.
Thanks Fred, I couldn't be happier with it!
theblacknight
07-26-2012, 06:16 PM
<edited by ToddG>
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Do I want to know?
Do I want to know?
lol maybe you did because he was probably gaga over that pistol.
Mr MEAT that has to be the most wicked Glock setup I've ever seen. Phenomenal. If you were to have any videos of running that gun fast that would be insane fun to see.
I've been reading fast to catch up - Are you primarily shooting .40 through it? I know .40 will run through a 10mm barrel - pretty well from the little bit of it I did with a G20 I used to have.
Tamara
07-27-2012, 07:17 AM
I know .40 will run through a 10mm barrel - pretty well from the little bit of it I did with a G20 I used to have.
Not at all a good idea. Running a 35k psi round headspacing off the extractor claw is just asking to grenade your pistol*... (Or for exotic malfs if the striker manages to kick it forward out from under the claw without busting the cap.)
There are aftermarket .40 bbls for the large-frame Glocks anyway, although I have had a handful feeding issues with .40 out of G20/29 mags, notable mostly because the guns were otherwise as close to 100% as makes no nevermind...
Sincerely,
A Recovering 10mm Fangirl
*Okay, maybe "grenade your pistol" is a little strong, but a massive case head failure from a completely unsupported cartridge will certainly vomit the magazine contents at your feet and tattoo your trigger finger plenty good.
ToddG
07-27-2012, 07:41 AM
Do I want to know?
Nothing at all negative about you or the gun (or anything else).
NickA
07-27-2012, 07:48 AM
Mr MEAT that has to be the most wicked Glock setup I've ever seen. Phenomenal. If you were to have any videos of running that gun fast that would be insane fun to see.
It does make you just want a big 'ol pistol doesn't it? Even though I'd have no use for it except to allay my irrational fear of Bigfoot the rare times I'm out in the woods.
Very nice shooter MEAT.
Sent from my PC36100 using Tapatalk 2
It does make you just want a big 'ol pistol doesn't it? Even though I'd have no use for it except to allay my irrational fear of Bigfoot the rare times I'm out in the woods.
Very nice shooter MEAT.
Sent from my PC36100 using Tapatalk 2
It does; esp a 10mm. I've got a very nice RTF2 G21SF but the Gen 4 G20 sounds like a winner too.
Tamara - I'm sure you're right about that! (.40/10mm).
lol maybe you did because he was probably gaga over that pistol.
Mr MEAT that has to be the most wicked Glock setup I've ever seen. Phenomenal. If you were to have any videos of running that gun fast that would be insane fun to see.
I've been reading fast to catch up - Are you primarily shooting .40 through it? I know .40 will run through a 10mm barrel - pretty well from the little bit of it I did with a G20 I used to have.
Thanks! Yeah, I'll primarily be shooting .40 reloads out of it, using the KKM 10-40 barrel. I haven't tried it yet, but I know several guys that have fired thousands of factory 40 ammo through their 10mm barrels without any problems. I probably could have gotten away without the KKM, but I'd rather err on the side of caution. The 40 Major is a high pressure round, and can get spikey with certain powders, so it's one less thing I have to worry about.
Took a decent shot of my sight picture this morning:
http://i29.photobucket.com/albums/c297/rabara9/SevignySightPicture.jpg
Tamara
07-27-2012, 05:46 PM
I haven't tried it yet, but I know several guys that have fired thousands of factory 40 ammo through their 10mm barrels without any problems. I probably could have gotten away without the KKM, but I'd rather err on the side of caution.
Oh, those crazy people that err on the side of caution! :rolleyes:
I fired several magazines of 9x19 through a stock Glock 23 back in the day because Glocks are so zomg awesome that you can shoot nines through a forty!!!1!. That doesn't necessarily mean I was being smart when I did it. ;)
Hey, it's your gun and your fingers, dude. Shoot it however you want. If you fall off that rock and break your leg, don't come running to me. ;) :D
Oh, those crazy people that err on the side of caution! :rolleyes:
I fired several magazines of 9x19 through a stock Glock 23 back in the day because Glocks are so zomg awesome that you can shoot nines through a forty!!!1!. That doesn't necessarily mean I was being smart when I did it. ;)
Hey, it's your gun and your fingers, dude. Shoot it however you want. If you fall off that rock and break your leg, don't come running to me. ;) :D
If my humor/sarcasm detector is malfunctioning, I apologize, but...
Like I said I will be shooting .40 reloads through a KKM 10-40 barrel (10mm-40S&W Conversion Barrel). I have zero plans to shoot 40 through the stock G20 barrel, and have no reason to since I have the conversion barrel.
out of curiosity, you also mentioned loading to a longer OAL of 1.2" instead of 1.135" that I believe is standard. Would this also alleviate headspacing issues? I know I'd hate to damage such a nice piece of hardware, especially since I'm sure it wasn't cheap.
Tamara
07-27-2012, 08:09 PM
If my humor/sarcasm detector is malfunctioning, I apologize, but...
Naw, maybe yours is fine and mine's busted. :o
out of curiosity, you also mentioned loading to a longer OAL of 1.2" instead of 1.135" that I believe is standard. Would this also alleviate headspacing issues? I know I'd hate to damage such a nice piece of hardware, especially since I'm sure it wasn't cheap.
It might help headspacing issues, if I was using a 10mm barrel. The KKM 10-40 barrel has the same dimensions as the regular 10mm barrel, except it's designed & chambered to shoot 40S&W.
I load long for a few reasons.
1. G20 mags are designed around 1.25"-1.26" OAL's, so 1.20" should decrease the possibility of mag feeding issues.
2. It reduces case pressure.
3. I can use powders like WST to make Major safely, while @ 1.135 not so much.
4. The 2011 guys usually load between 1.185"-120", so there's a ton of available data.
Naw, maybe yours is fine and mine's busted. :o
Ok. You should probably get it looked at, hopefully it's nothing serious... ;)
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