I've had both, and love both. I have loaded and tested more than 500 rounds in 2 different barrels and still have yet to find an "awesome" consistent sub .5 moa group with this cartridge and many bullet combinations. Dont get me wrong, my 240 will perform .8 moa all day long, but IMO the 2 25-06's I had were waaaaay easier to get to shoot fantastically (both sub .5 moa). If you want to shoot an 85-90 grain bullet with incredible speed and great accuracy, get or build a 240 Weatherby. If you want to shoot a 100 grain bullet accurately and with amazing speed, get or build a 257 Weatherby. A 25-06 will work good, but if you are gonna go for a 240 Weatherby, why not a 257? JMO.......
Norm