Im on the fence with FC brass. I've seen some larger rifle brass with sloppy loose primer pockets after one or 2 firings. The 300WSM brass I had was like that. I've also seen this recently with some recent manufacture 7WSM and 7mm08. As for .223 rem, I got lucky and found some (600 pcs) FC stamped brass at the range and it is holding up great. I found that brass about 4 years ago, I believe. I get great accuracy out of it in both my bolt guns and AR's. One thing I've noticed is the primer pockets are very tight, even after 4 or 5 firings. I use BR4 primers and AR comp powder, but the brass seems to be good stuff, so I'll keep using it until I find it's more suitable for the scrap bin.