Cavitating projectile of firearm ammunition

A cavitating projectile of firearm ammunition comprising:

• a head portion conjugated with a secant nose surface having a cavitating edge;
• a central portion;
• and
• an aft portion with a gliding surface configured to stabilize the cavitating projectile in a cavity due to one-sided periodic wetting and gliding along a contour (W) of the cavity;
• wherein a caliber (D) of the projectile is defined by a maximum diameter of a circle circumscribing the cross-section of the gliding surface;
• wherein, in a plane of an axial longitudinal section of the projectile, a diameter (DX) of an enveloping contour line (R) extending from the cavitating edge to the cross-section of the gliding surface is limited by the equation:
• DX=d*[1+(LX/d)*2π*sin φ/π]N, wherein:
• DX is the diameter of the enveloping contour line (R) at a length (LX) from the cavitating edge, in millimeters;
• d is a diameter of the cavitating edge, in millimeters;
• LX is the length from the cavitating edge, in millimeters;
• φ is an apex angle, in a range of 60° to 180°, of tangents to the secant nose surface at points of conjugation of the secant nose surface with the cavitating edge measured from a side of the head portion;
• and
• N is a cavitating projectile volume factor in a range of 0.25 to 0.40;
• and
• wherein the caliber (D) of the projectile is equal to the diameter (DX) of the enveloping contour line (R) when LX=L, where L is a length from the cavitating edge to a leading edge of the gliding surface, and a center of mass of the projectile is located at a length (X) in front of the leading edge of the gliding surface, where X>0.3D.