SPECIAL AMMUNITION FOR WRISTROCKETS AND SLINGSHOTS 

A modern wristrocket is a formidable weapon. It can throw a shooter marble
about 500 ft. with reasonable accuracy. Inside of 200 ft., it could well be
lethal to a man or animal, if it struck in a vital area. Because of the
relatively large sized projectile that can be used in a wristrocket, the
wristrocket can be adapted to throw relatively powerful explosive
projectiles. 

A small segment of aluminum pipe could be made into an impact-detonating
device by filling it with an impact-sensitive explosive material. 

Also, such a pipe could be filled with a low-order explosive, and fitted with
a fuse, which would be lit before the device was shot. One would have to
make sure that the fuse was of sufficient length to insure that the device
did not explode before it reached its intended target. 

Finally, .22 caliber caps, such as the kind that are used in .22 caliber blank
guns, make excellent exploding ammunition for wristrockets, but they must
be used at a relatively close range, because of their light weight.