143 eldx ballistic profile. sako a7

I started with hornady .294 g7 for their 143 eldx, was being lazy, shot at 550 was low, adjusted velocity down then shot at 880 and was high. Oh oh. Reset bc to .303g7, used my jbm ballistic app to true the velocity. Shot this at 880 yds, in a 10 mph wind from 11:00. Held 4moa hit one on the...