I couldn't get the copper solids to group out of my Hastings barrel. But I have been really happy with the Federal Barnes Expanders in 3/4 oz. 1900 feet per second and less than 3" group at the range at 100 yards. The 9 pointer I shot this year dropped in his tracks. The higher velocity should let a guy shoot over 100 yards, but I havent grouped it farther yet....that will happen this summer. Guys I have talked to who are shooting this load are saying 6" groups at 150 yards. Wow.