SCAMMER Sep 22, 2019 #4 Take into account that primer cup hardness is not the only attainable challenge. If there is a lot of slop around the firing pin while in the bolt face you can quite very easily get primer cratering that is a Phony positive for strain signs. https://donovanrnibt.jts-blog.com/30733492/new-step-by-step-map-for-federal-155