5.7x28 FN Handgun Cartridges
Learn more about 5.7x28mm FN Handgun and Rifle Cartridges
Looking to find out more about firearms before you apply for your SAPS firearm licence? Learn all there is to know about 5.7x28mm FN Handgun and Rifle Cartridges right here.
This cartridge was developed by Belgium gunmaker Fabrique Nationale for its new personal defence gun, the P90 and its companion pistol, the FN Five-Seven. The military armour-piercing variant of the round is claimed to be far superior to the NATO standard 9mm cartridge. The civilian variants of this cartridge are not available with armour-piercing bullets, and as such have a much weaker performance, closer to that of the .22 WMR (.22 Magnum).
5.7x28mm FN Handgun and Rifle Cartridges |
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| Cartridge Specifications | |||
| Case Type: | Rimless, bottleneck | ||
| Introduced: | 1989 | Made For: | Rifle |
| Cart Len: | 1.594-in | Case Len: | 1.138-in |
| Case Dia: | 0.310-in | Bul Dia: | 0.224-in |
| Ballistics measured with: |
| 4.82-inch pistol barrel |
| Cartridge Variants: | |||
| Weight | Velocity | Energy | |
| From: | 27 gr | 2100 ft/sec | 264 ft-lbs |
| To: | 55 gr | 1000 ft/sec | 120 ft-lbs |
| Cartridge Used in Database | ||
| Weight | Velocity | Energy |
| 40 gr | 1675 ft/sec | 250 ft-lbs |
| Rankings for Cartridge Used in Database | |||
| PF: | 67000 | TKO: | 2.148 |
**See below for further reference regarding the power rankings listed in the tables above:
MV-Muzzle Velocity
Muzzle velocity when fired from a typical handgun. Measured in feet-per-second.
ME-Muzzle Energy
Muzzle energy when fired from a typical handgun. Measured in foot-pounds.
PF-Power Factor
In shooting competition the Power Factor is used to determine the competitive division in which a particular handgun/cartridge can be used. A simple calculation of the bullet's mass times its muzzle velocity.
PF = bull. mass x muzzle vel.
TKO-Taylor Knock Out Formula
Developed by big-game hunter John Howard Taylor in the 1940's. Calculates the relative effectiveness of bullets for hunting game.
TKO = (bull. mass x muzzle vel. x bull. dia.)/7000
Link back to the main table listing of handgun and rifle cartridges HERE.
