Trajectory and velocity along with a short action.
I bought a couple 300 shorties several years ago(300WSM and 300SAUM) and ended up selling the WSM. It had a good bit of recoil like a LW 300WM, didn't give quite the MV of the 300WMs I own, and just really didn't fill a need. I just grab my 300WMs if I want that performance or my 30-06....
I only kept the SAUM because it shoots so well(Sendero SF sub 1/2 MOA), but I've never taken an animal with it. I take it to the range now and then to punch paper, but when I want 300 Mag performance, I grab one of the winnies.
If you don't intend to shoot past 300, the 30-06 will fill your needs. If you want 30cal mag performance it's hard to beat the famous 300 Win Mag.
Some will argue SA vs LA, I have a couple safes full of rifles and personally never felt a difference in either under any circumstances.
Good Luck
loder
