[Cupped-n-Committed]

I just bought a pattern master and its a wad stripper, I guess. It has little raised sectins similar to rifling that graps the wad to slow it down and then vents the gases out holes as the wad passes it, I guess to keep it from speeding up again and into the shot once exiting the barrel. I want tot take it to the range and pattern it today and see what it shows me.