Got it all sighted in now. It shoots one hole around 1"at 30 yards off a bench. 65gr KIK 2ff .018 pillow tick, .570 ball. This early Ketland lock is great. I have used dozens of them over the years and have thought them the best of the Chambers locks. Now that I actually own a rifle with one I REALLY appreciate how good this lock is. Super fast, and real easy on flints. Having a great time with this gun.