7x64

Udskriv

7 x 64 

7×64

 

Rifle Cartridges comparison with scale.JPG

From left to right 7×64mm, 7.92×57mm Mauser, .243 Winchester and .222 Remington
Type Rifle
Place of origin  Germany
Service history
In service Never issued
Production history
Designer Wilhelm Brenneke
Designed 1917
Produced 1917 - present
Variants 7×65mmR (rimmed)
Specifications
Parent case 8×64mm S
Case type Rimless, bottleneck
Bullet diameter 7.24 mm (0.285 in)
Neck diameter 7.95 mm (0.313 in)
Shoulder diameter 10.80 mm (0.425 in)
Base diameter 11.85 mm (0.467 in)
Rim diameter 11.95 mm (0.470 in)
Rim thickness 1.30 mm (0.051 in)
Case length 64.00 mm (2.520 in)
Overall length 84.00 mm (3.307 in)
Case capacity 4.48 cm3 (69.1 gr H2O)
Rifling twist 220 mm (1-8.66")
Primer type Large rifle
Maximum pressure (C.I.P.) 415.00 MPa (60,191 psi)
Maximum pressure (SAAMI) 379.21 MPa (55,000 psi)
Ballistic performance
Bullet mass/typeVelocityEnergy
9.1 g (140 gr) SP 914 m/s (3,000 ft/s) 3,810 J (2,810 ft·lbf)
10.0 g (154 gr) SP 880 m/s (2,900 ft/s) 3,901 J (2,877 ft·lbf)
11.3 g (174 gr) SP 820 m/s (2,700 ft/s) 3,841 J (2,833 ft·lbf)
11.2 g (173 gr) RWS HMK 867 m/s (2,840 ft/s) 4,209 J (3,104 ft·lbf)
Source(s): "Cartridges of the World" [1][2