Not many of mine head space well with the RemSTS BUT the carbon they leave seems to be less than some other primers.....Less meaning more like a black dusting than a hard black crust.

I finally have one rifle that appears to like them so i will be giving them more attention this year. Ive only test fired them and wont know for sure until it hits the range but i sure hope they workout.

Ron

Nice range work and report/review as usual. I should try some BH209 in the NULA just for a comparison on breach plug carbon since it uses a breach plug with a different design than most. It doesn't really conform in dimensions to what most people would think is ideal for BH209 also.