![]() 223 load with 75gr bullets - AR15. They chronoed around 950 fps from a 23 Contender with a 23 barrel. The 190gr bullet referenced is the Interlock bullet (which is discontinued) and the data is not subsonic. I just paid for the 300 Blackout date (its just. A bolt 300 blackout suppressed with subsonic would be much more quite. Even using it for subsonic loads it would have an extremely low case fill and would have unreliable ignition. The suppressed blackout ARs still have a loud sound from the action cycling. Trying to reach typical 223 velocity with it would result in a catastrophic failure. Even if it would, why You would get much better terminal effect with a 300. Tite Group is a pistol and shotgun powder. The 223 subsonic would more than likely never be enough to operate a gas system. 338LM, 6.5X47, 308 etc through cans and it works great. I tried 4.0 of TB at one time with a 55 gr bullet. Disclaimer: 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. This is just my opinion based on quite a few years of playing with subsonics and suppressors. ![]() That way you can take care of any close in stuff quietly and save a lot of time on loading a basic 22LR equivalent in your rifle. I know some guys think they should have subs for any gun they carry with a can but it makes more sense to carry a suppressed. You've got a 300gr subsonic telephone pole coming out of the barrel and with good loading and workup with your rifle you can hit dogs out to 500yds with a heavy bullet and do it quietly. 338 BR upper on might make it worth doing. When loading a Barnes TSX, Tipped TSX or LRX bullet, your rifle may prefer a bullet jump of anywhere between. On the other hand taking your AR and putting a. Trying to get something a little quieter for my 223/5.56 SBR. You don't gain enough with the subs to make it worthwhile when you're limited to. Anyone have information on subsonic loads for 223/5.56 using H4895 or other powders with 65gr/69gr/75gr bullets for use suppressed I know H4895 has been the Military's main powder since WWII and heard that it works well with under charged loads and less than 1,000fps. I tried this recipe using some Sierra 55 gr soft point boat tails and it worked fine. I think more realistically you build a dedicated subsonic rifle and just shoot regular HV ammo out of your. ![]()
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