7mm Winchester Short Magnum

7 mm Winchester Short Magnum
WSM and WSSM family of cartridges. From left to right: .223 WSSM, .243 WSSM, .25 WSSM, .270 WSM, 7 mm WSM, .300 WSM, .325 WSM.
Type	Rifle
Place of origin	United States
Production history
Designer	Winchester
Designed	2001
Produced	2001–present
Specifications
Parent case	.300 Winchester Short Magnum
Case type	Rebated-rimmed, bottleneck
Bullet diameter	0.284 in (7.2 mm)
Land diameter	0.277 in (7.0 mm)
Neck diameter	0.321 in (8.2 mm)
Shoulder diameter	0.538 in (13.7 mm)
Base diameter	0.555 in (14.1 mm)
Rim diameter	0.535 in (13.6 mm)
Case length	2.100 in (53.3 mm)
Rifling twist	1 turn in 9.5"
Primer type	large rifle magnum
Maximum pressure (C.I.P.)	63,817 psi (440.00 MPa)
Ballistic performance
Bullet mass/type Velocity Energy 160 gr (10 g) 3,050 ft/s (930 m/s) 3,304 ft⋅lbf (4,480 J)
Source(s): Winchester [1]

The 7mm Winchester Short Magnum (also known as the 7mm WSM) is a centrefire cartridge developed in partnership with Browning Arms Company and Winchester ammunition, making its debut and introduced to the shooting public in 2001. It is a member of the Winchester Short Magnum family of cartridges.