RE: 25-06 or 270 WSM
The .270wsm is a magnum if you ask me, at long range it has the energy of 7mm rem mag....300wsm/win mag...etc...500yds that is.
So in that sense I think any of the WSM's are a step up from the .25-06, .270, .30-06 in power...
I like the short beltless case of the WSM's.
You may consider the good ole trusty .270 win, a better all around than the .25-06 IMO.
I think I'd get either of the .270's over the .25-06.
You handload? how about a 6.5mm-284 ?? split the difference between the .25 & .270, great BC...., can load up to 160grs and all the way down to maybe 85grs or something?