I've been shooting a 25/06 since 1969.
For the 115 gr -120 gr bullets go with the slow powders. IMR4831, H4831, IMR 7828, RL22, RL25, VV N165, Win WMR, H1000 and Magnum.
There are other powders that will work on both ends of the burning range, but you will find the best combination of accuracy and velocity with the IMR 4831, IMR 7828 & RL 22 range for that bullet.
I like IMR 7828 best for my gun, a Browning A-Bolt. You'll find that your gun will like one brand and weight bullet and a powder better than the others, if it is a typical rifle.
Jimmy K