7.7×58mm Arisaka

The 7.7×58mm Arisaka cartridge was the standard military cartridge for the Imperial Japanese Army and the Imperial Japanese Army Air Service during World War II. The 7.7×58mm cartridge was designed as the successor of the 6.5×50mmSR cartridge for rifles and machine guns but was never able to fully replace it by the end of the war.

Type 99 7.7 mm rimless
7.7×58mm Arisaka
TypeRifle
Place of originJapan
Production history
Produced1940–1945 (Type 99)
VariantsType 92 semi-rimmed 7.7 mm, Type 99 rimless 7.7 mm (Arisaka), Navy type 7.7 mm
Specifications
Parent case8×57mm IS
Bullet diameter7.92 mm (0.312 in)
Neck diameter8.58 mm (0.338 in)
Shoulder diameter11.0 mm (0.43 in)
Base diameter12.02 mm (0.473 in)
Rim diameter12.07 mm (0.475 in)
Rim thickness1.0 mm (0.039 in)
Case length57.8 mm (2.28 in)
Overall length79.6 mm (3.13 in)
Primer typeLarge rifle
Ballistic performance
Bullet mass/type Velocity Energy
182 gr (12 g) Type 97 ordinary cartridge 2,400 ft/s (730 m/s) 2,319 ft⋅lbf (3,144 J)
203.7 gr (13 g) type 92 ordinary cartridge 2,500 ft/s (760 m/s) 2,738 ft⋅lbf (3,712 J)
162 gr (10 g) Type 92 armor-piercing cartridge 2,700 ft/s (820 m/s) 2,480 ft⋅lbf (3,360 J)
165 gr (11 g) Type 92 incendiary cartridge 2,700 ft/s (820 m/s) 2,590 ft⋅lbf (3,510 J)
156 gr (10 g) Type 92 tracer cartridge 2,700 ft/s (820 m/s) 2,444 ft⋅lbf (3,314 J)
Source(s):
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.