buckfever,

With 120-grain bullets Ramshot Hunter works better than Magnum. Other good powders for 120-grain bullets are H4350 and Reloder 19.

Hunter and Magnum are pretty temp-resistant--not quite as much as the Hodgdon Extremes, but better than most powders.

“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck