I shoot a 243 AI 10 twist with RL 19 and 47grs, Shoots everything from 85 gr Gamekings, 85 partitions, 87 gr Hornadys, 95 gr Bergers all into .5 MOA providing I do my part. I have also shot some 103 gr customs into small groups. Just finished shooting some 100 gr partitions into just less than 1". figured I didn't need to keep shooting just put them up until deer season. Good luck
