Yes, it works. BO, 30/30, haven't tried the 308W yet. 145gr @ 2100 in the BO carbine, 175gr @ > 1600 in the 30/30 so far. About all the recoil I can take with the 30/30 on the bench. 175gr works good in the BO pistol, just haven't chronyd yet. Bama ran his 358(?) @ 300 yds, pretty fast with excellent accuracy, Cu added. Cu adds the toughness to take the high RPM. I've dropped a percent of Sb & get good results, trying lower, I think the 30/30 is running ~ 1% now.