Nice group, I tried 30 grs myself and was pleased with the group. Tapped the missing screw hole out to the next US size 5/40 so now have elevation. Moved the rear sight slightly and moved the P.O.I. closer to the center of the bullseye' Am not crazy about the front brass sight. Used to Ruger Blackhawks. Broke the stock ramrod so that ended the shooting for yesterday. Made a new rod today. Will try again next week