I' m shooting a WIN mod 70 in 270WSM. My best load so far is 61.2 gr of IMR4350 behind 130gr sierra btsp. This produced a 5/8" group with a stock rifle(no bedding). Factory ammo did perform well with WIN 150 gr - just under 1" group. I plan to try RL-19 next with the same bullet(sierra 130). Then, I may try RL-22 with a 140 gr sierra.
Oh and the load mentioned was a couple of grains shy of max according to Sierra.
All in all, I love this cartridge.