With a .660 Rhino Choke the 301A 4X5X7.5 in copper should perform very well. I got over 200 in a 10 circle at 40 yards.

Am shooting the H378 Hevishot 4X5X7 loads now and get over 230 hits in a 10 inch circle at 40 yards. Awesome loads.

Good luck with your decision. You can call Ray or Sandy at the phone number listed on the web site and they can tell you what should shoot well from your gun.