like said, go to lightest maxi-hunter in that twist.i tried maxi-hunters in my TC HAWKINS 50 CAL 1-48 twist. they were terrible.i called thompson and they said the maxi-hunters are not good in the 1-48 twist.they said MAXI-BALL is LONGER and will stabilize better. what a difference using .370 gr MAXI-BALL in the 1-48 twist. been using them for 30 years or more.