I think they recommend shooting these things through revolvers and bolt action rifles only - no?
From Cheaper than Dirt...
Ammunition cannot ship by air!
60 grain solid lead bullet.
Muzzle velocity - 950 fps.
Velocity at 100 yards - 802 fps.
Muzzle energy - 120 ft/lbs.
Energy at 100 yards - 86 ft/lbs.
Non returnable item.
Will function and cycle in most semi automatic firearms.
Works well with 1 in 9 and 1 in 7 twist barrels.
Uses: Plinking, small game hunting, pest control.