Interesting... thanks Seminole Wind and Reflex.

right now I shoot 45 colt and 454 Casull but hope to add a 480 Ruger to the bullpen soon.

Did you folks find any load data for 300-MP to work with or did you work up your own loads?

From what you are both saying it sounds like good stuff

"If you are going to go through all the trouble to put a hole in something, why not make it a big one?"