The 270 WSM is probably the short mag I will eventually purchase. Mainly because for me, it does something the standard doesnt. As much as I like to question the short mags, the 270 and 300 WSM are interesting to me. The others, I havent made up my mind. I would think with a good Barnes X bullet coming out of that 270 WSM, and a decent shot, and you should be ok. I read Craig Boddington's article also, one must remember, Craig is a 30 cal fan. Nothing wrong with that, just understand he is. A key consideration I would have is, if the bigger boomers you find uncomfortable to shoot, then dont, but just make sure you are using a premium bullet that retains a high percentage of it's weight.