Well just shot for the first time today past 500yds. I used my Hart accurized 300Rum with first time loading shells. 90gr of IMR7828 with 180 Nosler Partition. Grouped .5 at 100yd but not that accurate out past 400yds, still managed to put all 5 shots in a 10" circle at 820yds. I'm hooked now, I think I;m gonna try one of Harts barrels and test better loads and bullets.
Travis
Travis