Load data for .300 Rem. Ultra Mag. + 180gr Hornady InterLock RN
343 suitable loads across 59 powder(s) for cartridge .300 Rem. Ultra Mag. with 180gr Hornady InterLock RN bullet.
The most recommended powders for this combination are Hodgdon Retumbo, Vihtavuori N570 and ReloadSwiss RS 76.
Based on C.I.P., the max. allowed case length is 2.850 in / 72.39 mm, the max. cartridge length is 3.600 in / 91.44 mm, and the max. allowed pressure is 64,977 PSI / 4,480 bar.
Based on C.I.P., the max. allowed case length is 2.850 in / 72.39 mm, the max. cartridge length is 3.600 in / 91.44 mm, and the max. allowed pressure is 64,977 PSI / 4,480 bar.
Load Specifications
ImperialMetric
Bullet:.308 | 180gr | InterLock RN
Cartridge:.300 Rem. Ultra Mag. load data
Case Length (L3):2.850" | 72.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.374" | 9.5 mm
Case Capacity:112.5 gow | 7.29 cm³
Primer Size:Large Rifle Magnum (LRM)
Max. Pressure (C.I.P.):64,977 psi | 4,480 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:16.5
Get PRO license to unlock all data and calculators