My son swears by his 300 Blackout, subsonic.
yup, but pricy
“..My son swears by his 300 Blackout, subsonic...”
I’ve not shot it in a subsonic load.
I do, however, shoot it in a rifle running supersonic with a 125gr JHP. I love it; almost no recoil, a light .30cal bullet off an AR platform, and I find it fairly accurate out to about 100 yards or so.
Making my own cases from 5.56 was a little time-consuming, but once they were made, I use a brass catcher and reload em. I have had no issues with them whatsoever. Actually, the first firing of those home-made cases fire-forms em to the chamber contour even better as there is very little shoulder on these. IMHO, it’s a good tactical/larger varmint round.