Roger, I have three Browning BPCR's and enjoy shooting all of them. They are competitive right out of the box. My 45-70 likes 67gr of GOEX Cart, Rem cases, WLR primers, Black Magic lube, and Lyman Postells with a 30:1 alloy. The 40-65 likes 65gr of GOEX Cart, WW cases, WLR primer, Black Magic lube, and the Saeco 740 bullet 30:1 alloy. I've not yet shot the 45-90 out to distances (limited locally to 200m) that would give me an idea of its best load. Almost forgot that .060 LDPE wads are used in most of my loads. Roger Bump