1600 fps. 510 grain from Montana Precision Swaging, 1:20 if my info is correct. 'shrooms were recovered on the 50 yard berm, soft damp loam, 'bout armpit deep. Kinda looks like an artillery splash when they hit. Owner thinks he could get close to 1800 fps with those, loaded over RX7, I concur but will let his shoulder walk the walk. 1600 was enough for me all things considered. Doubt that he will explore that in any case as that load shoots MOA at 100 yards.