Have some coated cast from sns 136 gr. Shooting a pattern at 20 yards while sighting in using vortex green dot. Poderpuff load with unique. Not expecting much but better than 4” groups @ 20yds. Gun shoots copper fairly accurately at fifty yds 1-2” groups. Would like to try a different boolit. Recommendations please. No, I did not slug the barrel as not trying for extreme accuracy. Tia