Phew. Thought I had screwed up. I prefer to hand prime and had worn out a RCBS priming tool ( not the parts as I replaced different parts ). Bought a Lyman tool and had problems with too many primers not being seated deeply enough and required another striker/hammer strike. Found a RCBS tool on sale and grungily went back to RCBS. This time, I guess I went overboard and pressed too hard and seated them below the surface. When I looked at them recently, I was scared they were seated too deeply. When I was able, I tried a coupl;e of the worse ones and loaded them in my 4567 and thank heavens, both fired. Just curious, which will "reach" the furthest - firing pin or striker. Or are they both about the same? While I am not in a bind for primers, this is about 450-500 primed cases and I would hate to loose them.