That is why I like the real hard Dixie slugs. Takes high velocity, no leading. Had question about locking RMC cases onto lead slugs, as they don't crimp into the grooves well as sharp bend works thick mouth. First I resize tight and slightly bell mouth.Insert slugs which take a little pressure. Then I use a die with slightly more taper and swage the mouth into slug, like the fit you get with bottleneck cases. Same deal works with our long cases made from BMG brass.Ed
