.300 Norma Magnum is a Swedish-origin long-range centerfire rifle cartridge in the Norma Magnum family. Norma presents the caliber as a modern precision cartridge tied to its earlier .308 Norma Mag lineage, while C.I.P. lists Sweden as country of origin and SAAMI later accepted the 300 Norma Magnum for standardization. The record links documented chambered rifles such as the Barrett MRAD / MK22 and PGW Timberwolf Gen 3 without turning those relationships into conflict-use claims.
| Variant | Configuration | Designation notes |
|---|---|---|
| 300 Norma Mag. Open Tip Match 230 gr | Governmental HPBT load | Norma lists product 40177862 with a 14.9 g / 230 gr HPBT projectile, 0.743 G1 ballistic coefficient, 910 m/s velocity, and 6169 J muzzle energy from a 26 in barrel. |
| 300 Norma Mag. Open Tip Match 220 gr | Governmental HPBT load | Norma lists product 40177852 with a 14.3 g / 220 gr HPBT projectile, 0.575 G1 ballistic coefficient, 910 m/s velocity, and 5921 J muzzle energy from a 26 in barrel. |
| Norma GOLDEN TARGET 300 Norma Mag 220 gr | Shooting-range and match load | Norma lists product 20177712 with a 14.3 g / 220 gr HPBT projectile, 0.575 G1 ballistic coefficient, 910 m/s velocity, and 5924 J muzzle energy from a 26 in barrel. |
| Norma Hybrid Target 300 Norma Mag 230 gr | Shooting-range and match load | Norma lists product 20174602 with a 14.9 g / 230 gr HPBT projectile, 0.743 G1 ballistic coefficient, and 910 m/s velocity from a 26 in barrel. |
These links identify sourced rifle chamberings and do not create conflict-use claims for the cartridge.
| Firing weapon | Weapon type | Firing evidence |
|---|---|---|
 | Multi-caliber bolt-action sniper rifle | Army and Barrett sources identify .300 Norma Magnum as a MK22/MRAD chambering, with Barrett listing a .300 Norma Magnum MK22 configuration and the Army describing the caliber as part of the MK22 PSR package. Sources: New Army sniper weapon system contract awarded to Barrett Firearms, MK 22 - Barrett Firearms |
 | Bolt-action sniper rifle | PGW lists .300 Norma Magnum among Timberwolf Gen 3 chambering options, alongside .338 Lapua Magnum and .300 PRC. Sources: Timberwolf Gen 3 |
The .300 Norma Magnum page is relationship-only: it records a cartridge family, source-backed specifications, Norma product context, and documented rifle chamberings without turning ammunition availability into a conflict-use claim.
C.I.P. lists the 300 Norma Mag with Sweden as country of origin and a table date of 2012-05-30.
Source: C.I.P. 300 Norma Mag TAB. I.
SAAMI announced 300 Norma Magnum acceptance in 2021 and identified RUAG Ammotec USA in the standardization notice.
Source: SAAMI Announces Acceptance of New Cartridges.
Army and Barrett sources identify .300 Norma Magnum as a MK22/MRAD chambering, while PGW lists it as a Timberwolf Gen 3 option.
Sources: New Army sniper weapon system contract awarded to Barrett Firearms; MK 22 - Barrett Firearms; Timberwolf Gen 3.
C.I.P.'s 300 Norma Mag table lists Sweden as the cartridge's country of origin and records the table date as 2012-05-30.
Sources: C.I.P. 300 Norma Mag TAB. I
SAAMI announced acceptance of the 300 Norma Magnum for standardization, identifying RUAG Ammotec USA as developer and a 61,000 psi maximum average pressure.
Sources: SAAMI Announces Acceptance of New Cartridges
The U.S. Army announced the Barrett MK22 MRAD contract and described .300 Norma Magnum as one of three fielded calibers for the Precision Sniper Rifle program.
Sources: New Army sniper weapon system contract awarded to Barrett Firearms
