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.
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Not another dime.
VERY short barrel
https://www.thehighroad.org/index.ph...ringer.280327/
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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.
@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
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