Velocities you speak of out of a 115 grain 25:06 are not possible? Now!? anyway, with the powders and bullets available. Will it come. possibly? But I will tell you the throat life of the rifle will not last very long at all, to much powder to burn.
THERE JUST ISN'T ENOUGH CASE CAPACITY. iF SOME ONE COMES UP WITH A STEEPER SHOULDER and or less voliable powder, THAT WILL WORK MAYBE? But I doubt it! It is what it is, ain't going to happen with what we have available at this time!
Just food for thought? Faster isn't alway's better in many arenas that you may play in?

My 2 cents?