Yeah ya waited a bit late there buddy. BH209 is the only powder I ran in her Impact. Haven't tried any of my Swiss or anything else in it. When Tom sent it to her he had already tested it with BH and found that it was the best in that particular rifle. It's powerful stuff. And cleanup is a dang site better than any other BP or Sub. Luckily I was forewarned of this when I started shooting it last year, get you an 1/8" sharp drill bit and about every 10 or so shots, clean out your flash. BH really carbons up the flash hole. I tested 3 different primers with hers and the CCI shot shell primers performed the best. Yours may vary as most rifles have a favorite combination. Part of the fun of MLers is finding that perfect combo.