I did a ladder test with 123gr hammer hunters under rl26. (Lapua brass, 210m)
I started at 57 and went to 63 in .5 intervals.
I found light swipe at 62.5 and heavy swipe at 63.
I dropped it to 61 grans going 3230. I Loaded up 10 rounds, and it printed a .63 10 shot group.
I figured that was...