I've use Gaugemates silvers 10 to 12 in four 10's so far. I needed to clean up chambers and remove a few .001 with sand paper on the reducers for one of the tight ones. They don't make the silver series anymore, wish they did. Also had to remove a little from the rim with file for one. I've got multiple sets so I can fit them to the gun. I also use any brand of shell. I like the Fed. papers for the BP loads and Fed plastic for smokeless. Never a problem with sticking if they are fitted to the gun.