My affinity for the 270WSM comes from the short action, efficient use of powder, recoil (compared to other "mags") and amazing accuracy. I experience increased performance across the board, compared to the venerable classic 270. I guess, for me, the whole package seems great, AND there is a performance bump. The 270 WSM allows loads that are easy on the old body as well as heavier loads for the bigger stuff out there. My "safari" loads (for my hoped for Alaska and Canada trips) are a bit aggressive, but the rest are relatively friendly to the shoulder and the retinas. A bigger hole would be necessary when we go for Griz... The Ruger Compact Mags have some interesting options... Mike