![]() Perhaps if he wants to spend another wad of cash and 6 more months waiting on a stamp for a new can that is a good way to go. 308 diameter (Whisper/Blackout) isn't in his near future. Since the original poster bought a 5.56mm suppressor, and not a 7.62mm one, I'd go out on a limb and say that anything. Loading your own means you do not have to put up with subsonic ammo that actually goes transonic/supersonic and is noisy, or ammo loaded so weak as to guarantee subsonic velocity but only runs 800-900 fps with a trajectory that rivals a mortar. Buying a single stage press will save you money in the long run, the short run if you are buying subsonic 223. I think buying specialty ammo is for suckers. If you want quiet, go with 22lr, if you want power and accuracy go with 300 Blackout. I never got any better than double the group size with subsonic 223 compared to standard ammo in my ar-15. ![]() You get true semi-auto capability and much more power from the 240 grain bullet or supersonic 125 grain bullet. Using a 300 whisper or 300 Blackout upper is much nicer. Use a heavier bullet and you get even more power.Īnother factor is that due to the much greater powder charge in the subsonic 223 (about 7 grains) compared to the 22lr (about 2 grains?) the subsonic 223 is going to be much noisier than any subsonic 22lr especially when suppressed. This gives us 98 ft-lbs and 75 ft-lbs.Ĭompare this to a 70 grain Speer RN at 1050 fps about 171 ft-lbs. ![]() Let's say we have a 22lr 40 grain moving 1050 fps and a 60 grain moving 750 fps (can anyone do any better?).
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