Has anyone seen ammunition testing done with very short barrel 5.56?

[LittleLebowski]

maybe we could get @LittleLebowski to merge them to talk about both calibers

Done.

[HeavyDuty]

Done.

Thanks! Maybe we should edit the thread title to make it apply to short barrels of all calibers?

[OlongJohnson]

For extremely short barrels, I would think .300 BLK is the way to go, since it's basically a pistol cartridge. Case diameter close to bore diameter, likes the same powders as .357 and .44 Magnum loads. Charge weights are in between those two. Following the logic, one might investigate .350 Legend in short barrels. I think Ruger has a factory pistol option.

[Joe45]

VERY short barrel

https://www.thehighroad.org/index.ph...ringer.280327/

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[diananike]

I wish that all the bullet manufacturers would publish expansion/fragmentation thresholds for their bullets.
Then we could all make our own determinations using velocity tests and ballistic coefficients.

[03RN]

Shit, the blast alone from 5.56 at that barrel length is enough for me to go .300BO, not to mention that if you want to suppress it, your choices are somewhat limited.

Value added my friend. Shoot, cook, or scare the threat.

[TGS]

@HeavyDuty, @rob_s

Please see my post here for some preliminary: https://pistol-forum.com/showthread....=1#post1019911

Also see further testing from a law enforcement/industry shoot demo (the PDF of test results attached at bottom of post): https://pistol-forum.com/showthread....=1#post1025781

[rob_s]

@HeavyDuty, @rob_s

Please see my post here for some preliminary: https://pistol-forum.com/showthread....=1#post1019911

Also see further testing from a law enforcement/industry shoot demo (the PDF of test results attached at bottom of post): https://pistol-forum.com/showthread....=1#post1025781

Thanks!

I was trying to get the ballistics side of that discussion broken out from the "which folding stock to use" because the ballistics seem to get buried in there.

[HeavyDuty]

@HeavyDuty, @rob_s

Please see my post here for some preliminary: https://pistol-forum.com/showthread....=1#post1019911

Also see further testing from a law enforcement/industry shoot demo (the PDF of test results attached at bottom of post): https://pistol-forum.com/showthread....=1#post1025781

Thanks! That thread is what caused me to start my now-merged thread here to split out the discussion.

[Wondering Beard]

@HeavyDuty, @rob_s

Please see my post here for some preliminary: https://pistol-forum.com/showthread....=1#post1019911

Also see further testing from a law enforcement/industry shoot demo (the PDF of test results attached at bottom of post): https://pistol-forum.com/showthread....=1#post1025781

Out of curiosity, what ammo is your agency issuing for your carbines, if you are allowed to tell us?