I say forget the brake and buy a used duramax stock and download some 80 gr barnes TTSX bullets to about 3000 fps.
In a 8# rifle the recoil should be under 8#.
9# rifle about 6.5# of recoil.

Zero at 200, 1.5" max ht at 125 yds, 2.5" low at 250, 6.5" low at 300.
950 FPE at 300 yds.

Not sure how much a brake would reduce the recoil anyway with a 25-06
but I dont care for brakes so...