It's been a long time ago but I used IMR-4064 under the 235 gr., .375 bullet. I want to remember I was going the opposite direction from you and was loading them lighter. Regardless, I do remember the load was accurate.
Same here. I was trying to duplicate 35 Whelen power level. 68 grs of IMR 4064, Fed 215 and Nosler cases and 3.6” o/all gave me 2550 fps and consecutive 4 shot groups of 0.8” and 0.9” (first 3 in 0.3” and 0.5” respectively). I may have to try it on white tails this year.
