I dont know cascadedad but I'm thinking you should screw the breechplug in just a little bit further. ha ha. I was out shooting my lightning today with the 460grn BS with 80grns of trip 7 fff at 100yrds with my 1x pine ridge scope and I was shooting about a 2 1/2 inch group. I was not using any wad. I love both of my Lightning and I think you will too. Alot of difference in recoil between the Lightnings and the Ultra Mag.