Hands down the Granite Mountain Arms African Magnum Mauser action, Krish.I have loaded dummy rounds as per the above table. My magazine, bottom metal, feed rails needs some work to function the way I would like. Right now it is single stack. I am still in the process of thinking which actions to use for the project. 1) MRC MAGNUM, 2) CZ 550 MAGNUM, 3) GMA MAGNUM.. Have these actions handy.