Well I went to the range today and shot 100 grain 777 pellets, and Hornady Sabot 200 grain SST. Was shooting a 2" group at 100 yards. So i'm pleased with that. I wanted to shoot the Pyrodex RS loose powder I had but dont have a way to measure it out yet. They dont have anything in the stores around here for 45 cal....should have got a 50.