![]() Even the RA556B will perform well down to ~1600 fps which gets you out to ~75 yards with a 8" barrel. We have more ammo that will do the job within 100 meters from 5.56 barrels as short as 8" such as the all-copper 50 grain TSX. ![]() At that time, I was running 10-11.5" 5.56 platforms with either a Surefire SOCOM Mini or comparable KAC QDC/CQB nowhere near hearing safe, but certainly much better than feeling like a icepick in the ear when firing unsuppressed indoors. Back then, both ammunition performance from sub-10" barrels and inherent reliability issues with such weapons made me say that anything less than 10" in 5.56 was likely to be a loud, unreliable, and poorly performing waste of time. 7x”-ish “hole poker” without the ability to induce rifle-velocity incapacitation.įor home defense purposes, not expecting to be overrun by a mass of armored drug cartel soldiers, what are some well-considered choices here?I've given this a LOT of thought (like $50K in various SBR and PCC weapon systems over the years) and I think that today's answer is a little different than what I would have told you just 5 years ago. 355 vs.223/.308 diameter, predictable expansion in a quality round, hearing safe, relatively wieldy - but still a. Barnes TAC-TX Black Tip).Īt the extreme other end of the spectrum are items like suppressed AR-9 pistols shooting something like Fed HST 147’s. For 300 AAC Blackout, supersonic seems a better choice here, as I can get 2300-2400+ FPS from an 8.5” barrel with a 110 gr quality bullet (e.g. Suppressors mitigate hearing damage concern this to a degree, but you now have the issue of increased unwieldiness of the 223 length barrel + loss of velocity and increased gun battering for an ever-shorter barrel. My question: At what point is bullet velocity compromized to the point where the short (223/556) AR becomes pointless, and you mights as well switch caliber to something like 300AAC? The current vogue of short barrel AR’s drives up muzzle blast and drives down velocity - the key incapacitatign component. Shooting AR’s inside a house, especially shorties seems a surefire route to permanent hearing damage for self/family/pets. Overpenetration may be a concern for some as expansion seems to require a “wet” medium.įull-size AR’s (14.5”+ barrels + muzzle device) aren’t exactly wieldy inside a house. I’ve seen some less expensive alternatives lately. ![]() creating rifle velocity type incapacitation. There are (expensive) Lehigh 300 Blackout “Maximum Expanion” 300AAC subsonic rounds with huge (1”) expansion, but these could be classified as novelty rounds and are still poking (big) holes vs. There probably isn’t a ‘right’ answer as everything is a tradeoff, but it is something I have considered and experimented with a bit. (I am leaning toward acquiring a 10.5” DDM4 300BLK pistol with LAW folder and brace, as a niche weapon, not a home-defense DocGKR, etc.: I claim no great knowledge or expertise this is just my $0.02, as I try to educate myself about the various cartridges for short-barreled ARs. 300 Whisper, by influential gun writer J.D. I do remember that plenty of game was taken with the ballistically similar. 30 WCF, and usable for the same purposes. It appears that some, perhaps many, see 300BLK as being equivalent-ish to 7.62x39 and. HD, in my urbanized area, with Fifties-era, thin-cedar-skinned bungalows, is not the same as HD “on the prairie,” where my late great-grandparents’ farm is located, and most neighboring structures are quite far away. If that's not the case, what exactly is 300BLK for?Well, HD is CQB, but CQB is not, necessarily, HD. I always had the understanding the 300BLK was supposed to give the same characteristics of good 556 ammo but in a shorter, more easily suppressed platform specifically for CQB/HD.
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