I decided to branch out a bit and see what other powers had to offer. Platform M1903A3 As Issued, iron sights (front USMC profile). Projectile NOE 314299 with the top band at 0.310, WW alloy ~18 BHN. Gator GC put on in a LEE 314 die. Lube 45:45:10 x 2. Brass, LC Match 62, flash hole enlarged #43 drill bit. Primer WLR. OAL 3.45". All shots off the bench, Caldwell rest, rear bag, no wind. 0.002 neck tension. Bore snake twice between powders with Ed's Red on first one.
Aliant 2400, 15.9 grains, my usual load, MR 10 shots 100 yards 1.52", well within the 9 ring SR-1.
Varget, 28 grains, MR 10 shots at 100 yards 1.85", just holding the 9 ring on an SR-1, recoil a tad more, somewhat disappointing.
Accurate 5744, 20 grains, MR 10 shots at 100 yards 2' higher than the target! Holding on the bottom of the target frame got keyholes low and left. Recoil similar to Varget.
I always read that the Accurate 5744 was a cast favorite but I am at a loss to understand why this load was so erratic compared to the other two. Any thoughts are appreciated.