.320 Revolver

.320 Revolver
TypeRevolver
Place of originUnited Kingdom
Production history
DesignerP. Webley & Son
Designed1868
Produced1868 - 1920s
Specifications
Parent case.32 Short Rimfire
Bullet diameter.3170 in (8.05 mm)
Neck diameter.3200 in (8.13 mm)
Base diameter.3220 in (8.18 mm)
Rim diameter.3500 in (8.89 mm)
Case length.6200 in (15.75 mm)
Overall length.9000 in (22.86 mm)
Rifling twist1 turn in 22 in (560 mm)
Primer typeBerdan
Ballistic performance
Bullet mass/type Velocity Energy
80 gr (5 g) Lead 168 m/s (550 ft/s) 73 J (54 ft⋅lbf)
Source(s): Cartridges of the World - 8th Edition (1997), Frank C. Barnes, page 245

The .320 Revolver, also known as the .32 Short Colt or .32 Webley, is an obsolete revolver cartridge. Its ballistic performance is comparable to that of the .25 ACP.