To get the most out of a 25-06 you need a 26 inch barrel.
please elaborate on this statement so I can learn more?
Remember the Guy wants an all rounder, to cover a broad spectrum of game and I would assume terrain as well -Woods , open country , Hilly , steep ridges, Brushy areas etc..
Most everything I have read so far states 24" is optimum for 25-06. Additionally while researching Bolt actions rifles I noticed most manufactures are utilizing 22-24" barrels for 25-06.
Here is one such article I ran across while researching but there were more:
The typical barrel length for a repeating hunting rifle chambered for high intensity cartridges, such as the .243, .270, .308, or .30-06, is 22-24 inches. These are useful all-around barrel lengths for such cartridges. The highest velocity standard cartridges (.243, .25-06, .270 Win.), which achieve muzzle velocities around 3000 fps, are at their best in a 24 inch barrel and 24 inches is the SAAMI standard for almost all American centerfire rifle calibers. However, for cartridges such as the .257 Roberts, 6.5x55, 7mm-08, .308 Win., .30-06, .338 Federal, .35 Whelen and .350 Rem. Mag., which typically operate at 2500-2800 fps, the velocity loss in a 22 inch barrel is not extreme and a rifle with a barrel of this length usually balances and swings well.