300 BLACKOUT BULLETS FOR RELOADING CAN BE FUN FOR ANYONE

I used load info from Hodgdon and Correct, but my first attempt yielded supersonic velocities. (At my location the pace of audio was about one,143 fps over the test day.) Just after reducing the powder demand, eight of the following 10 rounds were subsonic.I have not accomplished any true ballistics assessments of such but though the bullet weights