The Lapua .300 Winchester Short Magnum (WSM) is a high-performance, short-action, magnum rifle cartridge, often used for long-range hunting and precision shooting. While the .300 WSM itself is not originally a Lapua design (it was developed by Winchester in the early 2000s), Lapua is known for producing high-quality brass and match-grade ammunition, and it’s likely you’re referring to Lapua’s components or ammo offerings for the .300 WSM.
Here are the key features and information:
Caliber: .30 caliber (0.308″ / 7.62mm)
Case Type: Rimless, bottleneck
Case Length: 2.100 inches (53.34mm)
Typical Bullet Weights: 150–200 grains
Muzzle Velocity (factory loads):
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