If your looking hard at the 6.5 Swede, and you want to shoot "barn burner" loads (that's assuming you handload), then you may want to consider buying or "building" (ie: a Savage action) the 6.5 on a "modern" or new action. The new actions can handle a bit more pressures than the older Mauser actions. Some of those Mausers (like my own military that is in original condition) are 100 years old. I also have a 6.5 in a modern action.
I'm loading some 140gr. Berger's for my "Modern" 6.5 that will push 'em at 2725fps. Now, there is no way I'd shoot these loads out of my military 6.5. BTW, There are no signs of pressure at this velocity, and I may be able to get it a bit faster, but I just wanted to hit the 2700fps number and call it "quits".
Dave