Wow I must be one lucky Pro Hunter owner. I have the 50 cal Pro Hunter and mine shoots moa or close to it with almost everything I shove down the barrel. Right now I am shooting 1" groups at 100 yds with a 250gr Barnes TMZ with a Harvester yellow crushed rib sabot sitting on top of 105 gr of BH 209, Win 209 primers. It also shoots 1" groups at 100 with a 250gr TC shockwave using a harvester black crushed rib sabot sitting on 115gr of BH 209, win 209 primers. I love mine and it is the best shooting rifle I have owned including my Rem 700.