7.5 FK caliber ammunition is a proprietary caliber designed and produced by FK Brno Engineering s.r.o. This caliber was designed specifically to bridge the gap between standard handgun and carbine rifle calibers in terms of power efficiency range and accuracy. While at the same time it's compact enough to be used in a standard size automatic pistol with a 5-inch or 6-inch barrel and when used in pistols with FK Brno's patented recoil attenuating system it has recoil comparable with calibers with less than half the kinetic energy. The following are calculations of conventional ballistic data for the 7.5 FK cartridge. F9: All copper monolithic wide meplat flat nose. This bullet is designed to create a wide and very deep permanent wound channel in addition to a very high dynamic shock effect. Accurate and effective for defence and medium game hunting up to 300 lbs to 100 yards and dangerous game up to 500 lbs to 50 yards.