.600 Overkill

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.600 Overkill
TypeHunting, Rifle
Place of originUnited States
Production history
DesignerRobert Garnick
Specifications
Parent caseNone
Case typeBelted, straight
Bullet diameter.620 in (15.7 mm)
Neck diameter.646 in (16.4 mm)
Shoulder diameter.646 in (16.4 mm)
Base diameter.656 in (16.7 mm)
Rim diameter.640 in (16.3 mm)
Rim thickness.060 in (1.5 mm)
Case length3.00 in (76 mm)
Overall length3.65 in (93 mm)
Case capacity196.6 gr H2O (12.74 cm3)
Primer typeMagnum Large Rifle
Ballistic performance
Bullet mass/type Velocity Energy
900 gr (58 g) FMJ 2,450 ft/s (747 m/s) 11,995 ft⋅lbf (16,172 J)
Source(s): 470MBogo[1]

The .600 Overkill cartridge is a hunting cartridge designed to fit the CZ-550 action, by American Hunting Rifles.

Design[edit]

The .600 Overkill was designed by Robert Garnick of Las Vegas, Nevada, USA. The case is based on the .600 Nitro Express, with a belt [.683 in (17.35 mm)] added for headspacing and the rim to fit that of the .505 Gibbs [.640 in (16.26 mm)] size bolt face.

This cartridge was intended to be the largest bullet that was able to fit in the CZ-550,[1] and was designed specifically for the purpose of elephant hunting. The CZ-550 is able to fit 2 cartridges, with slight alterations. The .600 Overkill fires a 900-grain (58 g) bullet at more than 2,400 ft/s (730 m/s),

References[edit]

  1. ^ a b McCarthy, Daniel. "Mini Compendium of Big Bore Cartridges". 470Mbogo.com. Archived from the original on 1 September 2010. Retrieved 4 September 2010.