Well so far I have just been working with full length resized brass and working on a powder load and I already have it down to .63MOA, with an SD 0f 9.3
Once spring comes I am sure I can get it down some more when I start working on seating depth and neck tension.. I am pretty picky about my components though, I trim all brass to same length, anneal every 2nd reload, turned the necks for consistent size, I sort all the brass within groups of 200th of a grain, I also use a widen pointing die on all bullets and sort them using a Sinclair bullet sorting stand to groups of 2000th of an inch groups, I also use a gempro scale and weigh my powder charge to 200th of a grain. My goal is to get my ES to around 10 and would like to get ES to below 8