Originally Posted By: KYshooter338Originally Posted By: IrelanderOriginally Posted By: Outsydlooknin75Federal Bulk. What ammo are you shooting in standard velocity? Subsonics are going to be more quiet but standard ammo is not going to sound the same suppressed vs not suppressed. Its got a shorter barrel then your CZ rifle. I shoot standard ammo out of my Walter P22 with suppressor and its still pretty quiet. Maybe I'm wrong, but I'd like to know why I'm wrong. I just fugured it would be the same type of deal with the. But use subsonic and it's as quiet as a mouse. 22 rifle it is just as loud as without the suppressor. Well, I know that when I shoot high velocity ammo in my suppressed CZ. So, yes, obviously subsonic ammo is quieter than supersonic, but how this relates to your 223 cannot be directly compared to your 22LR. In a small little CQB pit shooting at targets 10yds away the sonic crack can still ring your ears a little bit just because it's reflecting off the target so close to you. If you are using it on a 50yd+ range then you'll be just fine without earpro. Your suppressor will knock that down to hearing safe levels even if you do still hear the sonic crack. However with a 223 (particularly in shorter barreled AR's) there is a LOT of muzzle blast and that is what deafens you. Try subsonic 22LR in an unsuppressed 22LR and it's fairly quiet. Even with a suppressor most of what you hear is the sonic crack. With a 22LR in a rifle length barrel there is very little heard muzzle blast in the first place. Just shoot the damn thing and you will be fine. Why is it that when people get cans they immediately think that they need subsonic ammo? You wont find a subsonic round that is going to cycle the action of an AR unless you go to a 300 whisper or something of that nature. Originally Posted By: IrelanderOriginally Posted By: Outsydlooknin75Federal Bulk. The 223 is designed to travel 3000 fps and works great with a can, but if you want quiet either go with a 22 LR or build a whisper. Not sure on specs or what they changed, but I do know they had modified it well out of normal specs.I hear you on the full power ammo with a can. I think it would be grossly overgassed with normal ammo, probably beating itself up a bit. But the entire gas system on that Beck gun was highly modified so it would cycle the subsonic ammo. These barrels obviously have tight twist rates for the heavier, slower bullets and, from the sounds of it, perhaps a longer throat to clear larger projectiles and maybe a modified gas port (although it doesn’t look vastly oversized in the photos and, if the ammo really cycles a standard AR, it wouldn’t have to be oversized). One thing I did notice is that Allegiance claims their subsonic ammo runs a totally standard AR-15. But there’s no reason these Allegiance ones wouldn’t also work with normal ammo, and the text of their press release makes that pretty clear: “Coming soon the Allegiance subsonic barrel designed for subsonic and supersonic ammunition.” I’ve shot those Beck guns myself (video of the subsonic: ).
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