found this else where, so take with a grain of salt on IF /HOW accurate info is??
NOT MY data or did I verify its correct, but something to look into for you maybe
The printed 2009 Hodgdon Annual Reloading Guide has an article in the front on low recoil loads by Ken Kempa. Here are the low recoil loads he lists for the 270 Win, and the recoil reduction ranges from 47% to 56% (to 8 to 9.6 ft.lbs of recoil) with the 110gr bullet.
Using 110gr Barnes TSX with 23.6" barrel.
1. H4895 43.5gr 2837 fps 1966 ft.lbs. 0.85" group at 100 yards
2. H4198 36.4gr 2815 fps 1936 ft.lbs. 0.97" group
3. IMR4895 42.9gr 2649 fps 1714 ft.lbs. 0.84" group
4. IMR4198 34.8gr 2701 fps 1782 ft.lbs. 1.20" group
Using 130gr Barnes TSX 23.6" barrel
1. H4198 37.4gr 2712 fps 2124 ft.lbs. 0.51" group, 42% recoil reduction with 10.4 ft.lbs. of recoil