Absolutely a good idea.
Just offering observations based on what we have seen first hand from the cartridge with different powders.
It's still a wildcat,so we are on our own.......Knowing I could push it faster, I have always tried to stay on the conservative side and have still been impressed with how "easy" and tractable it is to load.
Be careful with the 7mm Weatherby data....I know first hand the RETUMBO data with 160's is very hot if you approach MAX in the Nosler manual. The 7mm Weatherby seems to be loaded pretty hot. I would work up to any 7mm Weatherby data in the Mashburn from below, to be safe.
