Hey there again.
Well I have to agree with you that the 24-26" barrel is just about optimum for the the vast majority of calibers.
I have not had that much experience reloading with the 7mm08 I used to have a x-bolt chambered in that a few years back before I really got in to long range.
It was a good round but I didnt care for the gun its self.
But for long range I would think you would be able to obtain good results with powders like RL-17 and H4350 pushing 135gr-140gr MKs or Berger VLDs.
as long as you keep it under 48grs of powder I dont think it would over pressure.
as for recoil reduction the grid to fit pachmyr recoil pads work pretty good does hell on sanding disk tho.
making the gun heavier with a new stock is not a bad idea
If you want further reduction other than a muzzle brake
a moderator will work be easier on the ears to but its a pain to get one.