7.5 FK

[citation needed] In C.I.P regulated countries, every pistol cartridge combo has to be proofed at 130% of this maximum C.I.P pressure to certify for sale to consumers.

[citation needed] The goal of the 7.5 FK project was to create a cartridge with a level of performance that could exceed that of the highly effective 125 gr (8.1 g) JHP .357 Magnum load,[clarification needed] be at least as effective terminally as the 7.62x39mm Russian and 5.56×45mm NATO cartridges when fired from short (8–10 in (20–25 cm)) barrel AK and AR type platforms, and to provide a package small enough to fit a standard-size military automatic pistol.

It is interesting to note that the measured velocity and energy of the 95 grain load 7.5 FK cartridge at the minimum design engagement distance of 75 m (82 yd) is 1,650 ft/s (500 m/s) and 577 foot-pounds force (782 J) respectively.

[2] The concept of using kinetic energy tables as a measuring method for incapacitating power has been used for almost a century but has been disputed for almost as long by various different authorities, scholars, and writers as it does not take into account the projectile construction and design which may affect terminal performance significantly.

[6] FK BRNO has published their own alternative method which they claim is more efficient and more accurate predictor of incapacitating power which they call Dynamic Shock Index (DSI).

This bullet is designed to create a wide and very deep permanent wound channel in addition to a very high dynamic shock effect.

The nose is designed to break off on impact, leaving a jagged 7 mm (0.28 in) meplat to create a large deep penetrating wound channel and a High Terminal Effect.

7.5 FK maximum C.I.P. cartridge dimensions [ 1 ]
7.5 FK bullet types [ 7 ]