IIRC, .22WRF is rated at about 1350fps. FWIW, the WW Dynapoint 45gr. flash plated, not jacketed, HP is rated at 1550 and I get 1500ish out of my H&R .22M UV, chrono'ed. I know of no sub-sonic .22M loads, though Augila makes a lot of stuff others dont,; should check their website.