That will be a great combination! Wish I could help with data, I just haven't loaded IMR 4831 or w760 & 140 accubonds. We uses RL-19 with the 140 accubond in the 270 win, and we have filled the freezer many, many times with deer, and one big cow elk. We use the recipe for RL-19 right out of the Nosler manual.