This rifle has been pretty easy to work with. The 280/280 Improved and WSM are all great cartridges, but the MSM has been pretty easy to work with all in all. Responded pretty well across the board and seems to be an easy deal. I guess to me, it feels like a 7mm Rem Mag Improved. Longer neck, more case space and cases seem to last forever. I am crowding on 10 firings of my original 50 Hornady cases.