My edumacated guess would be that since you are at the starting load levels in most of my books is that as long as your gun's firing pin will pounce on the primer hard enough you should be just fine. Maybe you put a primed only case in and find that out. Chief aka Maxx Loadbradford":kj1ju7s7 said:OK Continder, 180 grain TCFM, 5.2 grains of unique, COAL 1.135 +/_ .006 mixed headstamps.