My brother-in-law has had a Gray Hawk for years and has taken quite a few deer with it. It's a good shooter with Hornady 385 grain Great Plains bullets and Pyrodex RS. I'm not sure what charge he's shooting, but I think it's 80 grains. As always with a used muzzle loader, check the bore real well with a light to check for pitting and with a tight patch to check for bulges.