WHAT DOES BULK 300 BLACKOUT AMMO MEAN?

I should do some extra chrono do the job, but for supers, the above mentioned are fairly preferred. I am really bummed Wilson Beat stopped creating their version of Tac-tx for 300blk, that stuff was great. Indeed, it's actually not a powerhouse but which is not what it was meant to be. For me, it fits the shut-quarter-to-out to two hundred/300yd p