projectile for a stacked projectile weapon

from the USPTO today a published "Pending Patent Application"

http://appft1.uspto.gov/netacgi/nph-Parser...0210+AND+ICN/au)

United States Patent Application 2110030542
Kind Code A1
Cronin; Joseph F. ; et al.
February 10, 2011

Projectile for a Stacked Projectile Weapon

Abstract
Projectile stacking systems in which individual projectiles are clipped together to form a stack. The projectiles may be joined individually by a user before loading in a barrel, or during a loading process assisted by features on the breech of the barrel. The tail of each projectile includes a set of clips which engage the nose of a trailing projectile in the stack. Projectiles may be withdrawn from barrel and undipped as required by the user.