Get some 240 grain XTP and a pound of Triple Se7en 2f. Start with 80 grains and see what kind of groups that rifle shoots. I think you will be surprised. Normally, most of the packaged sabots like the XTPs, Cheap Shots, Shockwaves, will get you started and shoot very good. It's going to be a matter of finding the right projectile and powder combination.

So my advise to you is; take notes of the loads that shoot well and those that don't. Follow all recommendations of the manufacturer, swab between shots and be sure to run some dry patches also. Most of all if the rifle does not shoot to your expectations the first time out, do not get frustrated. Don't start adjusting the sights chasing bullet holes on the paper. This trip should be more of a learning experience to get used to your rifle.