Lapua Brass, 24.2gr H4895, 1.888 CBTO, 3002 FPS, 5 SD out of 22" Brux.
I wanted to like IMR 8208 XBR, it gave me good accuracy and velo but SDs where high. Varget was ok but a little slower than I wanted.
75 ELD M in my 22" Brux barrel 1:8 using 23.8 of IMR 8208 XBR/Lapua Brass and CCI BR-4 primers is getting me 2950 fps...stays supersonic past 1150 yards
Question for the OP. What are you doing to get your chronograph data? Sorry if that's a silly question but I can't figure out how you get your SD and velo if you are shooting the OCW round robin style....maybe is was 3 shot groups.