The Weatherby Ultralight with the 6 lug action in 240 Weatherby is a nice carry rifle and the reports I hear are that they shoot well also. I loaded for one in a 9 lug lefthand action. Norma brass is expensive some of it developed case neck splits on the 1st and 2nd firings. It obviously had some issues in quality back then. It liked 100 gr Horn SP's and then I had to try 85 gr Barnes XLC's which would copper foul the barrel to patterns by 15 rds.That effectively made me stop using them period.
The 25-06 has a proven track record everywhere on many different uses and even Wallyworld carries the ammo at a decent price. Any action you have that were chambered for 270-30-06 will work as a donor action without magazine work,can the same be said of the 240 Wthby mag? Magnum Man