Stick
Board policy mandates I state that I shoot for BCM. I have also done work for 200 or so manufacturers within the firearm community. I am prior service, a full time LEO, firearm instructor, armorer, TL, martial arts instructor, and all around good guy.
I also shoot and write for various publications. Let me know if you know cool secrets or have toys worthy of an article...
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Agreed. My response to him was that I'd seen people make hits at 300 with a .22LR, does that mean that's all we need? Ultimately my opinion on the matter is that what makes a rifle a rifle is hydrostatic shock producing velocity. Once you lose that, you're reduced to having to use "tricks" such as expanding bullets, and you may as well just use a PCC.
I would rather Rock my Cz Scorpion in 9mm, than a AR that short. Too much blast for me. And a 10.5 isn't THAT much longer in the total over all length. My go to is a 10.5 AR so I am not biased against short AR's.
Tactical Nylon Micro Brewery
Viable for recreational purposes
300blk out of a 9 inch barrel makes roughly 1100ftlbs of energy.
5.56 out of a 7.5" Barrel makes roughly 700ftlbs of energy.
Pretty huge difference.
With that being said, a .357 mag makes about the same energy in common barrel lengths. (between 600 and 700ftlbs)
For comparison, 9mm makes around 400ft/lbs on the high end.
Are there better options for a 7.5" barrel? Absolutely.
Is a 7.5" 5.56 effective for self defense, especially inside of 50 yards. Yes.
If you don't want the hassle of chasing a hard(er) to find and more expensive caliber, and still want significantly more power than a 9mm/.45 PCC, and want a super compact and an incredibly accurate AR pistol, a 7.5" is fine.
Would I rather get shot with a 11.5" or a 7.5" 5.56?
The correct answer is neither. In both scenarios, you'll probably die equally as fast.
Last edited by OutofBatt3ry; 08-10-20 at 22:04.
I’ve been close to building/buying a 7.5 barrel rifle several times. But posts like Stickman‘s and others easily found on the net have held me back. Also many prebuilt complete 7.5 rifles from different companies use a 2-3 inch long flash hider device of some sort, which begs the question why not just go with a 10.5 to start with? They look cool and I like the idea of a short 7.5 barrel in close quarters... but my shortest barrels currently are 10.5 and 11.5. Physics and all that. Just not sure I want to spend the time and money to find out in person.
Last edited by 9X19mm; 08-10-20 at 23:12.
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