Load data for .300 Rem. Ultra Mag. + 135gr Atomic 29 FNHP

482 suitable loads across 74 powder(s) for cartridge .300 Rem. Ultra Mag. with 135gr Atomic 29 FNHP bullet.

The most recommended powders for this combination are Winchester StaBALL HD, IMR 7828 SSC and Norma MRP.

.300 Rem. Ultra Mag. cartridge with combo bulletSeated DepthL3 = 2.850 in / 72.39 mmL6 = 3.598 in / 91.39 mmSeated Depth = .256 in / 6.50 mm

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
Case Length (L3):2.850" | 72.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.310" | 7.9 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:1:15.5

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