Here are a couple of the guns I mount it on as pictures speak a thousand words. 223 match and bthp loads that fly around 2700-2780fps (would have to chronograph my 14.5in 5R POF) would be any quieter? I shouldn't have such a big gap in sound suppression between calibers in this can should I? SO I guess my question to all this boils down to what are the quietest loads 5.56/.223 you have experience with out of a suppressor? Im wondering if the 75-77gr. 223 was muzzling about 3220fps vs the 2680 or so out of my 18in bolt gun. One, the 7.62 suppressor lets out more gas when shooting. Reloading data from Hodgdon lists a recipe for a 223 Remington load that uses. I started to think about it a little more and I had some theories I suppose. Subsonic 223 is basically 22lr with a big case that wont cycle the bolt. Subsonic 223 is basically 22lr with a big case that wont cycle the bolt. 223 would be so much more load through the 7.62 can than even the full power 168-175gr full power. subsonic 223 reloading data 300 Blackout 125 GR NOS BT Hodgdon Trail Boss. Related posts (automatically generated): Smells Like Bullshit to Me. Bullets moving at supersonic speeds will create a small sonic boom that can still create a noise problem. 22mag equivalent maybe? I was somewhat shocked that 55gr. Blackfork talks about working up subsonic. I got to tell you, although I would certainly say you dont "need" hearing protection, it did indeed still have a pop. 223 subsonic ammo that cycles CCI Quiet for one will not cycle in most semi-auto rifles but my wifes 1973 10/22 with the old stock well used recoil spring. To load subsonic (under 1100 fps) you will be hard pressed to get enough gas to cycle the action. Well I figured since I already have my 7.62 can (A YHM 7.62 QD SS) I'd put on the yhm 5.56 mount and run some rounds through it. I have a 300BLK SBR upper that we all know is quiet and subsonic. I have a couple of rigs I have been shooting, hunting, and just plain playing with that are quite fun with my suppressors.
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