Winchester Ammunition Super-X, 22 WMR, 40 Grain, Full Metal Jacket, 50 Round Box X22M
Specifications:

Caliber	22 WMR
Bullet Type	Full Metal Jacket (FMJ)
Bullet Weight	40 GR
Muzzle Energy	324 ft lbs
Muzzle Velocity	1910 fps
Casing Material	Brass
Sub Brand
Rounds Per Box	50
Boxes Per Case	40
Bullet Coating