Retumbo is a very good powder in the 25-06!
Have used it 120gr bullets[Hornady & Partitions]
But, for 115 BT's, 51.0-52.0 RL 22 worked lights out.
Switched over to H-4831sc if it got really cold.
Second the thought on Retumbo. It is very impressive with 110-120 grain bullets in the 25-06. I get outstanding accuracy with the 110 grain accubond and 60.4 grains of Retumbo. Good for 3175 fps out of my 24" barrel.