I Have been shooting Buckhammers out of my Ultra Slug Hunter for a while, shooting one ragged hole groups up to 120yards, But since they are getting harder and harder to find i have been trying different Slugs, I have found the Winchester BRI's Perform just as good if not better then the Buckhammers, Havnt been able to kill anything with them yet, but i am just about sure that whatever it hits its gonna hurt!!