all the factory balistics i've seen show the short mag to be a little slower than the win mag. less velocity with the same weight bullet means it ain't quite as hot to me. i can't figure out why they wanted to make a basic clone of the .300 win mag. as far as bein' nuts, caliber preference ain't got nothin' to do with it. in my opinion, unless you're bettering something by more than a couple hundred FPS at least, it's basically a waste of time. take all the .300's, win, short, norma, h&h, weatherby, etc. and there ain't enough difference in em to matter much. not until you get into the warbird and .30/.378 class do you get enough difference to matter a lot. i'll shoot my .270 against anyone with anything.