FIREARMS FOR FIRING SHOTSHELL TYPE AMMUNITION

摘要

Shotshell type ammunition includes a hull, a sabot disposed within the hull, and at least one projectile disposed within the sabot. The hull has a rimless first end that includes a primer for firing the ammunition. The hull also has a seat surface for seating the hull against a complementary seat surface in a firing chamber of a firearm. The seat surface is located a distance from an outer end surface of the hull at the rimless first end. The hull further includes an outer cylindrical side surface extending from the rimless first end of the hull to the seat surface of the hull. Methods of fabricating such ammunition includes forming such a hull, providing one or more projectiles within a sabot, and disposing the sabot with the one or more projectiles therein at least partially into the hull. Shotgun type firearms are configured for firing such ammunition.

主权项

1. A semi-automatic or automatic shotgun, comprising:
a barrel having an interior surface defining a bore without a forcing cone; a firing chamber sized and configured to fire a rimless shotshell ammunition; a generally cylindrical inner surface extending through a headspace within the firing chamber, the generally cylindrical inner surface having a length of at least about 0.318 centimeters (about ⅛ of an inch); and a seat surface within the firing chamber, the seat surface configured to abut against a complementary seat surface of a hull of a rimless shotshell ammunition to be fired from the shotgun and to prevent longitudinal forward movement of the hull within the shotgun when the shotshell ammunition is fired from the shotgun, the interior surface of the barrel defining the bore having an at least substantially uniform diameter extending from the seat surface within the firing chamber to a location proximate a distal end of the barrel.