I could not find a factory load to shoot in my Ruger Mk II stainless 7mm rem mag. So I bought a reloader and started working on it. My best load has been68.5grains ofHogdon H4831sc powder with a 140 grain nosler. THAT IS A MAX LOAD FOR MY GUN, don't try it starting out. I hope I get a chance this year to get some Re22 powder and try to work a load with it. I agree with what's been said about 7 mags being particular so start out at factory and work up in 1/2 grain increments.