Re: Preimer pocket prep
Most primer pockets are swaged with a tool that's slightly tapered. It has to be tapered to allow the tool to be removed easily. When we uniform primer pockets with a reamer, we take that taper out. My experience has been that this could decrease primer pocket life a bit because primers in factory pockets seem to seal more towards the bottom of the pocket, in this tapered area. Most primers that I bothered to measure (I was bored) had a slight taper in the opposite direction and were larger at the mouth of the primer. I know this is really hard to follow, but think of two cones one slightly smaller than the other, placed mouth to mouth. One mouth will fit inside the other, then go a short distance before it can go no further. Hopefully, I'm not too tired right now to explain this coherently. I'm sure I'll get flamed anyway...