Shot mine with H4895/24.6-24.7-24.8 grains pushing a 69 grain SMK. Temp 38 degrees with a light 5 mph wind between 12 and 1 o'clock. Groups .638", .539" and .394". Looks like 24.8 grains is a first node so will up the charge to et velocities in the 3150 range as dcloco suggested and I should hit a second node.

Waiting for dry weather to test 75gr A-max and Varget/24.5-24.6-24.7-24.8 in Win brass. Next powder to try (after seeing your group) is RE-15.