I really do that much load development when I got my GAP .338 Lapua i just picked a safe load i when I found it already have great accuracy I kept using it. I have done 1/2 moa at 100(which is very difficult considering the size) less than a 1in at 300 and around 3 inches at 850. Everyonce in a while I get a stiff bolt lift, I am loading them at 3.6 COAL with 91gr RL25 Lapua Brass F215M. So I decided to try loading at 3.647 (.020 jump to lands) same velocities same sd and even es. So I'm wondering can I expect the same accuracy since I was jumping them .066 before and now its just .020? So still a decent jump. Not sure but I thought scenars liked a good jump?