A firearm cartridge has a case defining an interior chamber and having a case mouth, an elongated projectile having a forward end and a rear end, a sabot assembly having an exterior sized to be closely received in the case mouth, and defining an interior passage adapted to closely receive the projectile, and the projectile including a stabilizer at the rear end. The stabilizer may include fins. The projectile may include a circumferential groove at an intermediate portion between the forward end and rear end. The sabot assembly includes a mating feature adapted to engage the circumferential groove to limit axial motion of the projectile with respect to the sabot assembly. The projectile may define a plurality of circumferential grooves. The sabot assembly may include a plurality of mating features adapted to engage the circumferential grooves. The sabot assembly may include a plurality of elements arranged about the projectile.

Firearm ammunition, primarily for destroying underwater targets in the case of underwater or air-to-water fire also can be used to fire at targets in the air. A cavitating projectile of firearm ammunition comprises a secant nose surface with a cavitating edge of diameter (d), a head portion, a central portion and an aft portion with a gliding surface, maximum diameter of which is equal to a caliber projectile (D). In a plane of an axial longitudinal section of the projectile, the current diameter (D.sub.X) at a length (L.sub.X) from the cavitating edge (d) to the projectile caliber (D) is limited by the equation: D.sub.X=d[1+(L.sub.X/d)2sin /].sup.N, wherein N=0.25-0.40. The cavitating projectile results in an increase in target destruction efficiency due to the loss of stability and turning over in a heterogeneous target.

Firearm ammunition, primarily for destroying underwater targets in the case of underwater or air-to-water fire also can be used to fire at targets in the air. A cavitating projectile of firearm ammunition comprises a secant nose surface with a cavitating edge of diameter (d), a head portion, a central portion and an aft portion with a gliding surface, maximum diameter of which is equal to a caliber projectile (D). In a plane of an axial longitudinal section of the projectile, the current diameter (D.sub.X) at a length (L.sub.X) from the cavitating edge (d) to the projectile caliber (D) is limited by the equation: D.sub.X=d[1+(L.sub.X/d)2sin /].sup.N, wherein N=0.25-0.40. The cavitating projectile results in an increase in target destruction efficiency due to the loss of stability and turning over in a heterogeneous target.

The present provides a munition comprising a projectile (7) and an at least two-segment sabot (1) having an ogive (2) incorporated on the sabot.

The present provides a munition comprising a projectile (7) and an at least two-segment sabot (1) having an ogive (2) incorporated on the sabot.

A firearm barrel has an elongated body defining a bore and defining a bore axis, the body defining a breech end and an opposed muzzle end, a chamber defined in the breech end and contiguous with the bore; the bore having an interior surface having a plurality of alternating lands and grooves, the grooves being surfaces separated from the bore axis by first radius, the lands being surfaces separated from the bore axis by second radius less than the first radius and the lands and grooves being straight elements parallel to the bore axis, such that no spin is imparted to a projectile propelled down the bore. The lands and grooves may extend from the chamber to the muzzle end. The bore may have a constant cross-sectional profile along its length.

A firearm barrel has an elongated body defining a bore and defining a bore axis, the body defining a breech end and an opposed muzzle end, a chamber defined in the breech end and contiguous with the bore; the bore having an interior surface having a plurality of alternating lands and grooves, the grooves being surfaces separated from the bore axis by first radius, the lands being surfaces separated from the bore axis by second radius less than the first radius and the lands and grooves being straight elements parallel to the bore axis, such that no spin is imparted to a projectile propelled down the bore. The lands and grooves may extend from the chamber to the muzzle end. The bore may have a constant cross-sectional profile along its length.

A projectile and stabilizer therefor are provided. The sliding stabilizer is used instead of fixed or glued tail feathers, vanes or other fletching as a means for stabilizing projectile flight. The invention improves current projectile technology with reduced assembly labor cost, the elimination of bow clearance issues, improved accuracy with the consistent production of the sliding stabilizer, easy replacement of the stabilizer in the field, and improved projectile storage. A sliding stabilizer is designed to slide along the shaft of a projectile and comprises a circumferentially extending wing and a plurality of fins. In use, the stabilizer is positioned at the front of the projectile prior to launch, and the projectile slides quickly through the stabilizer until secured at a stop position at or near the trailing end of the projectile. An annular arrow fletch and arrow stabilizer are also provided. The annular arrow fletch may be used for; stabilizing arrow flight, providing better clearance and functionality then conventional fixed glued tail feathers. A stabilizer may be used with light emitting diode arrow nocks. The stabilizer may improve arrow shaft stabilization technology with reduced assembly labor cost, the elimination of facial and or face mask interference issues providing more clearance, improved accuracy, repeatable production with the consistent injection mold production of the annular arrow fletch, easy replacement of the annular arrow fletch in the field, and improved arrow storage. An annular arrow fletch may incorporate a metallic contact point, which will work with all light emitting nocks. A design of an annular arrow fletch may be affixed to an arrow by an arrow nock and may comprise an annular wing, a central elongated cylindrical cylinder with a cap and a plurality of fins with micro-groves and a metal contact. In use, the annular arrow fletch is affixed at the aft end of the arrow by an arrow nock prior to launch.

A projectile and stabilizer therefor are provided. The sliding stabilizer is used instead of fixed or glued tail feathers, vanes or other fletching as a means for stabilizing projectile flight. The invention improves current projectile technology with reduced assembly labor cost, the elimination of bow clearance issues, improved accuracy with the consistent production of the sliding stabilizer, easy replacement of the stabilizer in the field, and improved projectile storage. A sliding stabilizer is designed to slide along the shaft of a projectile and comprises a circumferentially extending wing and a plurality of fins. In use, the stabilizer is positioned at the front of the projectile prior to launch, and the projectile slides quickly through the stabilizer until secured at a stop position at or near the trailing end of the projectile. An annular arrow fletch and arrow stabilizer are also provided. The annular arrow fletch may be used for; stabilizing arrow flight, providing better clearance and functionality then conventional fixed glued tail feathers. A stabilizer may be used with light emitting diode arrow nocks. The stabilizer may improve arrow shaft stabilization technology with reduced assembly labor cost, the elimination of facial and or face mask interference issues providing more clearance, improved accuracy, repeatable production with the consistent injection mold production of the annular arrow fletch, easy replacement of the annular arrow fletch in the field, and improved arrow storage. An annular arrow fletch may incorporate a metallic contact point, which will work with all light emitting nocks. A design of an annular arrow fletch may be affixed to an arrow by an arrow nock and may comprise an annular wing, a central elongated cylindrical cylinder with a cap and a plurality of fins with micro-groves and a metal contact. In use, the annular arrow fletch is affixed at the aft end of the arrow by an arrow nock prior to launch.

A firearm barrel has an elongated body defining a bore and defining a bore axis, the body defining a breech end and an opposed muzzle end, a chamber defined in the breech end and contiguous with the bore; the bore having an interior surface having a plurality of alternating lands and grooves, the grooves being surfaces separated from the bore axis by first radius, the lands being surfaces separated from the bore axis by second radius less than the first radius and the lands and grooves being straight elements parallel to the bore axis, such that no spin is imparted to a projectile propelled down the bore. The lands and grooves may extend from the chamber to the muzzle end. The bore may have a constant cross-sectional profile along its length.