117g Sierra is awesome in a 25/06 with Win brass, Federal 215's, and a max load of R#25 which will be pushing the 117 at 3200+ with blistering accuracy.
Also, the 120g Hornady HP is the toughest cup and core bullet out there in my experience.
Of all the partitions that I have fired in different calibers, the 100g 25 caliber partition is the most accurate of any partiton giving less than 1/2" groups at 3300 fps with a max load of IMR 4350 and a win primer.
I have also had fantastic luck with a 100g Hornady Flat base and 100g Speer BTSP.
Worst luck I have had was with a 110g Nosler ACcubond...tough bullet....sold them all.
If you guys have not tried it, R#19 and R#25 will blow away the velocities that are typical with IMR 4350 and the 4831's with fantastic accuracy, use Win primer or Fed 215's especially with the R#25.