Projectile assembly with stabilization/obturation enhancement

摘要

A projectile assembly comprises a base portion for receiving projectiles such as slugs and has an associated pusher plate at a rear end thereof for minimizing or controlling deformation of the rear end of the base portion during firing. The pusher plate has a disc with one or more axially extending projections that extend axially into the rearward end of the base portion thereby reinforcing the base portion and upon firing providing uniform axial deformation and/or obturation of the base portion with respect to a firearm barrel. The projectile assembly may be, for example, part of a shotgun shell slug cartridge, and provides enhanced accuracy over the prior art.

主权项

1. A projectile assembly for conveying a projectile through a firearm barrel, the projectile assembly comprising:
a sabot, a single slug sized for the sabot, and a pusher plate, the sabot formed of a polymer and having a central longitudinal axis, a forward end, a rearward end and a generally cylindrical outer surface, the sabot comprising:
a projectile seating base with a rear surface at the rear end of the sabot and a forward projectile seating surface opposite the rear surface;a plurality of wings unitary with and extending forwardly from the projectile seating base and positioned circumferentially around the forward projectile seating surface, the forward projectile seating surface and wings defining a cup for receiving a projectile, the wings openable outwardly for releasing the projectile after the sabot and projectile leave the firearm barrel; the pusher plate comprising:
a disc portion positionable at the rear surface of the projectile seating base, the disc portion having a periphery;at least one projection extending from the disc portion axially forward, the at least one projection displaced from the periphery of the disc, the disc portion abutting against the rear surface of the sabot and the projection extendable into the projectile seating base of the sabot, wherein the pusher plate is formed of a material more rigid than polymer of the sabot and is configured to not obturate the firearm barrel.