Hi. Made some quality reloads, but did not know what would work in terms of powder charge, so these are all experiments to get an idea. So since I got lucky and several loads under 1 MOA, I think it was successful. No surprise, Benchmark came out on top for random loads with both barrels.
http://natoreloading.com/62eldvt/
You can see, the black line on the bullet is where you need to cover so there is no gap in the ogive from the neck of the brass. If you do not load the bullet to that black line, there will be a gap between the bullet and the neck. Which in this case, was about 10k only since they are all loaded in AR mags (Stainless steel ones) that easily accepted 2.300 OAL. FYI Hornady recommends 2.400. But I think maybe 2.350 is enough. I have some other ASC Stainless mags, and I think they accept 2.320, which is slightly better. This gap didn't seem to matter much, as several sub MOA groups at 100 yards.
Its also interesting to see too, that some of the larger groups, as in 1.5"-1.7" had SD's across 5 bullets of "2" and "3" which is what neck turning and quality powder loading with weighed brass "can get you". the ES was under 10 across 5 shots. That kind of SD with an AR15 is near unheard of with 5 shots.