Dang! Smoking fast in that Allen Mag.I'm running them in a 7 Allen Mag - 8 tw Bartlein 26" - 107 gr of RL-33 pushing the 150 BD-2 to 3,711 fps. (COAL 3.56") Seems to like being seated to 0.010 to 0.015 off the lands.
Finding the same thing in the 7-LRM - 8 twist 24" Proof - except on that one we're running 71 gr of RL-26 and pushing them to 3,213 fps.
Not sure how much that helps. (would try H-1000 if we had it)
Curious, in your bullet seating depth tests, did you ever run some at a 30 to 60 thou jump to the lands?
With RL-33, you may indeed fond more consistent combustion seated near the lands. Others have found and reported that to be true with RL-33, including Kirby Allen.
I'm seeing evidence of lower ES/SD with the Bulldozer bullets jumped 0.035 to 0.050" in my rifles.