I have loaded my .260 with 140 Berger VLD, Sierra 142MK, and 139 Lapua Scenars. I attended a long range shooting school and the rifle performed great. I fired the 139 Lapua Scenars with IMR4350 Powder. I was able to hit targets consistently out to 1260 yards. I want to have more range time with the sierras and bergers. However, the lapuas are at 1moa or less at a 100 yards.