Just getting started and it is a bit overwelming.I just purchased a RCBS Rockchucker supreme kit to get started,also a tumbler and set of dies.I bought a RCBS competion set for my 7mm,my question is do I need to crip the case for the 7mm.The competion die set does not have a criper with it.Did I make a mistake buying this set or is it not nessecary to crip that caliber?[]