.300Blk reloading tips, tricks, recipes, etc

[JM Campbell]

IMR 4227
Lil gun - no loads worked up

I have a few others I'm going to work up when I have time, vhit, another IMR powder (don't recall the #)

I'll give you a list.


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[LittleLebowski]

What are you guys trimming to?

[JM Campbell]

1.348" min 1.368" max SAAMI spec

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[JM Campbell]

IMR 4227
Lil gun - no loads worked up

I have a few others I'm going to work up when I have time, vhit, another IMR powder (don't recall the #)

I'll give you a list.


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Viht n110 *sub loads only*
LIL'GUN *sub and super*
Accurate 1680 *sub and super*
IMR 4227 sub and supper
Accurate 5744 *super only*

*have not set true loads have just checked for function/no accuracy*

Projectiles

Speer TNT 125gr *my favorite
Hornady 150gr spire point and fmj
Hornady 208gr AMAX *favorite sub
Leatherhead 240gr - their first 300blk projectile
Missouri bullet co 245gr hitek

I really need to get back into load development, been a crazy year at work.



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[P.E. Kelley]

Please share when you get some accuracy testing done and what twist rate for the test.

I am having a devil of a time getting Subs to shoot.

[LittleLebowski]

Just picked up 3lbs of Lil'Gun after reading the monster thread on it at 300blktalk.com

[LittleLebowski]

1.348" min 1.368" max SAAMI spec

Copy, I checked all of the brass I was prepping last night (109 pieces) and it was all 1.35 or under so I said Fuck It, deprimed, and wet tumbled with steel pins today.

[LittleLebowski]

Please share when you get some accuracy testing done and what twist rate for the test.

I am having a devil of a time getting Subs to shoot.

What rifle setup are you using?

[P.E. Kelley]

Same upper with 16" barrel from 1:10 (I know it would keyhole) to 1:8 and then 1:7

All with A-Max 208's at 980's

Need to pick up some other ammo. Best I could muster from what I had was just under 2" at 100 yards.

[JM Campbell]

What gas port length? Pistol or carbine?


With IMR 4227 at 18.0gr 125gr Speer TNT I'm hitting 1-1.5" groups at 100yd. Granted that is a super load.

With Amax 208 and 10.8gr IMR 4227 I was at 1.5-2" at 100yd.

If I was a better shooter I'm sure the groups would shrink a little. Shooting position was sitting using concrete shooting bench with my pack as a bag/rest for the barrel/rail.

AAC 9.5 barrel kit that included their pinned gas block and gas tube.


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