That was really something.
This is another reason why I am so cautious when shooting the 300 blk. Because I have converted almost every single bit of my blk cases from federal 223 cases. Which obviously says 223 on the rim.
So, I won't even shoot 300 and 223 at the same range trip/same time. And even then these videos are enough to make me try to pay closer attention to make sure that I accidently mix them up.
Truth is though, I've only shot the 300 blk once since making the 9x39. To be perfectly honest, I like it so much more.
Though, I must admit, I load them on 7.62x39 modified cases though so that may not be any better than using 223 cases for the 300 blk. LOL