my friend and his dad shoot powerbelts out of 1:48 twist flinters and they say they get good groups....every guns diffrent..i sure hope my gun will shoot them...i have 25 bucks invested in them things already...i didnt even think that they wouldnt shoot good...i bought 1 pack then was back at walmart the other day and figured hunting seasons a few weeks away...i better stock up just incase im too busy or something...whatever bullet you like to shoot you shouldnt have a problem....if my gun dont like powerbelts im going to a maxi....but this is my first year so im testing everything i use still.....good luck