My dad bought a henry lever action in 6.5 creedmore. Cant find factory ammo anywhere, but we were able to find brass amd 129 hornady interlocks which should suffice. It seems most are shooting H4350 but I dont have any. I do have quite a few other powders in that range after loading 270w, 308w and 7 mag for years. I also have some superformance gathering dust. Any suggestions? Most discussion seems to involve h4350 and or heavier bullets that he will be shooting.