I’ve been running RL22 in a Ruger #1a under 175’s for 2500fps.
Running 49 grn. under both Sierra gk’s and Hornady rn’s.
40 grains of 3031 with a 170 Sierra or Hornady 175 SP or RN, out of both my Ruger and my Model 70 FWT...
yielded 2650 fps out of the muzzle...both with 22 inch barrels...seated to magazine length....
the manual said it should be yielding only 2400 fps...but I've shot plenty of both, and it has read 2650 from my chrony,
and a couple of other folks chrony, of different brands...
