The KISS principle comes into play with the kind of competition you describe. The fewer variables you introduce the fewer mistakes you can make (not an attack on your skill level). When shooting 3 gun I always ran 69 gr. SMK's for everything from paper at contact distance to the 400 yd. 9" plates, knew where they would hit no matter the distance and no way to mix up ammo.
Pick a good bullet, in my opinion something in the 70-80 gr. high BC group, have your rifle chambered for that round and go have some fun. A twist rate of 7-8 will handle this group just fine.
Pick a good bullet, in my opinion something in the 70-80 gr. high BC group, have your rifle chambered for that round and go have some fun. A twist rate of 7-8 will handle this group just fine.