I actually was shooting the 496/.504 Bullshop conicals, 70 grns powder, 1/8" wad in my White Ultra Mag - 28" barrel.
Final 3 shot group was 2" at 100 yds.
Its my load now for this one.
Recoil felt a little softer then T7 w/460 conical.
EASY cleanup.
BM3 is supposed to be a slower burner - going to try it in the shorter Whitetail if the weather ever co-ops.

Steve