![]() 223 can - and cheaper, and they don't stick in the bore. 223 loads for his silenced AR - after dismal results in the accuracy department and after 4-5 stuck bullets we scrapped the idea. I helped a friend of mine try to develop some subsonic. My 180gr 308 loads were key holing at 50 yards but the 150gr seemed to be fine. I already made some in 308, I did not have any problems with mine but then I did not want to so I have not loaded many more. I was just asking because that's what I was told. V-Max went through 3 milk jugs full of water and stopped in the 4th jug. ![]() However, that does not appear to be the case. I had hoped that maybe some of the fragile varmint bullets would break up at subsonic velocities. Still, it's kind of neat having a jacketed bullet that you can fire through an unmodified AR15. 22LR is going to be just as effective as a subsonic. That being said, there is still the argument that a. I mostly use IMR Trailboss, simply because it fills the case much better than any of the other fast pistol powders. I've played around a little with subsonic. 223 rifle would make the bullet less prone to being unstable. 22 LR? If anything, the faster twist on the. 223 case, but the same bullet is just fine at that velocity when fired from a. Then again, a 1/9 twist barrel for a 77/22 and some Aguila SSS, is probably a much easier long term solution.Isn't there also a risk of the bullet being unstable and hitting baffles for you suppressor guys? I was mostly thinking of using these loads in more of a SWOS, silent without suppressor role, so no worries regarding baffle strikes. It also might take up more case capacity, which would MIGHT good for a lot of reasons regarding powder ignition, case to bore expansion ratio, etc. Has anyone ever experimented with turning the 75 BTHP around? They would hit harder because of more frontal area, although real world results might not be worth it.Īlso, it would move the CoP closer to the CoG, basically leaving the mostly hollow nose, now, a drag-reducing tail. And you would have a much more quiet setup on the 223 subsonic if it was functioning in the single shot straight pull operation. Even if it would, why? You would get much better terminal effect with a 300 whisper if you want subsonic semi-auto operation. The 223 subsonic would more than likely never be enough to operate a gas system. Yeah, you just answered your own question. The 300 Whisper works like this, but then again that uses more powder. I have thousands of those ready to go.Īlso, I think that a wide gas port opening in combination with a pistol length gas system and a light weight buffer/spring could allow for cycling. I'll take the advice given here from other folks and use lighter, shorter bullets. ![]() It will not have sufficient gas pressure to operate the BCG, so you'll be shooting straight pull bolt action style.ĮTA: I guess if I'd read the thread I wouldn't duplicate other's effort Since we're talking about a fast burning pistol powder here, velocity in a shorter barrel likely won't be much less. Using 4.5gr of Solo 1250, the bullet gets 1052 fps from a 24 inch barrel. Is there a load to make H335 send 75grs subsonic? Also, will 75gr bullets stabilize enough at that low of a velocity to prevent baffle strikes? I'll be shooting out of an 18" 1x7" twist WOA SPR barrel.ĭisclaimer: I know that any load data provided is "use at your own risk" and I know to start loading 10% less than the provided load and work my way up.Īccurate Arms lists a subsonic load with Hornady 75gr BTHP. I've read that subsonic rifle loads usually use pistol powder, and usually only around 5gr of it.ĭoes anyone know the best powder and charge for 75gr subsonics? I've got a bunch of H335 that I use for 55gr full power rounds. I'll be using bulk 75gr HPBT bullets from wideners and wolf SRM primers. 223 suppressors, which is what I'll be shooting my subs through. I've searched the archives, but every thread about sub.
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