It's been awhile since I have played with 7mm Mag, and I think I forgot how anemic 7mm load data can be. I'm shooting a Remington and a Sako. My current experimentation revolves around 160s and numerous powders. The Sako gets a few more FPS than the Remington, but top published load data gets each to upper end 7x57 / 7-08 velocities over an Oehler.