.338 Norma Magnum

.338 Norma Magnum
Side by side comparison of the .338 Lapua Magnum cartridge to the .338 Norma Magnum cartridge.
TypeRifle
Place of originSweden
United States
Production history
DesignerJimmy Sloan, Norma
ManufacturerNorma
Produced2009
Specifications
Parent case.416 Rigby
Case typeRimless, bottleneck
Bullet diameter8.60 mm (0.339 in)
Neck diameter9.40 mm (0.370 in)
Shoulder diameter14.50 mm (0.571 in)
Base diameter14.87 mm (0.585 in)
Rim diameter14.93 mm (0.588 in)
Rim thickness1.52 mm (0.060 in)
Case length63.30 mm (2.492 in)
Overall length93.50 mm (3.681 in)
Case capacity6.95 cm3 (107.3 gr H2O)
Rifling twist235 mm (1 in 9.25 in)
Primer typeLarge rifle magnum
Maximum pressure440.00 MPa (63,817 psi)
Ballistic performance
Bullet mass/type Velocity Energy
19.44 g (300 gr) Sierra MatchKing 823 m/s (2,700 ft/s) 6,585 J (4,857 ft⋅lbf)
Test barrel length: 610 mm (24 inches)

The .338 Norma Magnum is a cartridge first introduced in 2008 and came into production in 2009, designed by Norma of Sweden.

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