I've used Starline brass for more than ten years in SASS/CAS competition. I use nickel as well as brass for my reloading of BP rounds with .428 RNFP big lube bullets. I use them in Uberti Cattlemen revolvers, '73 Winchester short rifle, '66 Winchester carbine and AWA Lightning Carbine. I lose more cases on the range than crack or split in either the brass or nickel, and cant tell you the last time I crunched one on the press. I load on a Lock-n-load progressive using RCBS dies.