The 7.5 FK is a completely new proprietary cartridge caliber. The case is 27 mm long with
a total length of 35 mm, and a head diameter of 10.8 mm. This caliber is not a necked-down
version of any other caliber. The case is designed to withstand higher pressures than
usually used in pistol calibers.
This cartridge will not fit in any other manufacturer's magazine, nor will it function in
any other current production model pistol.
||610 m/s (2000 fps)
|Velocity at 100 m (110 yds):
||465 m/s (1525 fps)
||1200 J (880 ft/lbs)
|Energy at 100 m (110yds):
||700 J (520 ft/lbs)
Monolithic HP and JHP bullets: 95gr
Monolithic flat nose bullets: 101gr
CURRENT STATUS AND USE
The 7.5 FK is C.I.P (Permanent International Commission) registered and approved. It is a
proprietary cartridge caliber, with intellectual property rights claimed and registered by
The main use of the caliber is for long-range pistol target sports,
medium (and dangerous) game hunting, home and personal defense and law enforcement, in addition to PSD's personal security detail, urban / suburban
combat, backup (SBR) short barrel rifle, Aircrew survival weapon, mechanised armour crew
weapon, among other uses..
Although the basic case design and the concept of the cartridge was finalized in 2011, more
than 250,000 rounds were fired with at least 15 different case design variations and over 30
different bullet designs were tested over a four-year period before the final cartridge
design form was approved for production.
The 7.5 FK was initially developed to fulfill a requirement for a new cartridge, by a private
customer in 2010. That requirement was addressing the shortfall of hand held and
shorter/smaller firearms that were used in their relevant theater of action and bridged the
gap between standard/popular pistol caliber and rifle calibers.
This requirement was subsequently canceled however the initial tests showed a very high
accuracy potential which prompted the developers to continue with the cartridge as a target
and long range pistol competition round, in addition to the original intended use.
The main design parameters were as follows:
- Cartridge must be short and small enough to be used comfortably in magazine fed / in
grip magazine, size of firearm.
- Ballistics must be designed for a max barrel length of 150 mm, and projectile must be
supersonic at 150 meters.
- Recoil force should not exceed power factor 230, [ .45 ACP +P ]
- Accuracy/ precision at 100 meters must be less than 100x100 mm rectangle.
- Projectile must create hydrodynamic shock at impact range of 100 meter (110 yard) in
targets with a weight of up to 150Kg (330 lbs).
- Projectile permanent wound cavity in ballistic gel at 150 meters must be minimum 35 mm
diameter and 300 mm in length.