Load data for .338 Norma Mag. + 277gr CutEdge MTAC
460 suitable loads across 74 powder(s) for cartridge .338 Norma Mag. with 277gr CutEdge MTAC bullet.
The most recommended powders for this combination are Vihtavuori N560, Norma MRP and Accurate MAGPRO.
Based on C.I.P., the max. allowed case length is 2.492 in / 63.30 mm, the max. cartridge length is 3.681 in / 93.50 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Based on C.I.P., the max. allowed case length is 2.492 in / 63.30 mm, the max. cartridge length is 3.681 in / 93.50 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Load Specifications
ImperialMetric
Bullet:.338 | 277gr | CutEdge MTAC
Cartridge:.338 Norma Mag. load data
Case Length (L3):2.490" | 63.2 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.731" | 18.6 mm
Case Capacity:105.4 gow | 6.83 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):63,817 psi | 4,400 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:10.0
Get PRO license to unlock all data and calculators