Hard air magazine review on a hw50 's
muzzle velocity for the Weihrauch HW50S air rifle tested by HAM peaked at 799 fps. This is a .22 caliber model, don’t forget: the .177 version would shoot significantly faster.

This muzzle velocity – obtained with Gamo Raptor Platinum 9.7 Grain alloy pellets – was combined with a peak muzzle energy of 13.74 Ft/Lbs.