WHAT DOES BULK 300 BLACKOUT AMMO MEAN?

I am normally in the temper to master, educate me in this article on this: May be the 7.62x40mm that very same chambering because the Wilson Beat seven.62x40 WT or are we referring to two individual wildcats right here? The 7.62x40 WT velocity change of "a pair hundred FPS" bigger than three hundred BO was pulled from their Internet site I are like