I have a 50 caliber CVA Hunterbolt and use the Lee 44 caliber, #90336 in a sabot. It cast at 214 grains and is accurate. I thought about using a 45 caliber slug but after trying my 44 slugs, I went no farther. I never chronographed it but I guess I should. I've never hunted with it but feel confident enough to hunt with it. I practiced with a 4x Tasco and at 100 yards, it grouped at 4" and sometimes 3". I never got rifle accuracy out of it but for a cheap in-line, it done well in my opinion. I also used Triple Seven.