Thanks for the re-direction. Seems I misread short magnum data for the 270. Winchester does list H4831 for Nosler 150 BT as well as 4350 and RL22 for the standard 270. I will start with the H4831.
I am new to reloading and intend on using a 270 Mannlicher Schoenauer for White tail in Wyoming. I have Nosler 150 BTs and not sure about which powders and loads to use. Nosler Ballistic room lists IMR4350 and H4831SC which defers from the powder recommendations in the Winchester manual. Any...