I have a trued Rem 700 action with 26" Broughton 1-8" barrel in a Manners T2A stock and a Nightforce 5.5-22x50 on top. I've shot about 112 rounds through the gun trying to find "that magical load". I've tried Retumbo, H4350, and H4831SC using Berger 140VLDs. I've adjusting seating depths from jammed to jumping and powder charge weight as well. I've gotten consisten .6" to .8" groups at 100 yards, and .8" - 1.3" at 200 yards. Is that all I should expect from that caliber and a custom rifle???!~!?! If not, any suggestions?? Thanks!!!!