Load data for .300 Rem. Ultra Mag. + 240gr Sierra HPBT LR MatchKing
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
Cartridge:.300 Rem. Ultra Mag. load data
Case Length (L3):2.850" | 72.4 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.890" | 22.6 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:1:11.0
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Community Loads for .300 Rem. Ultra Mag. + 240gr Sierra HPBT LR MatchKing
Real loads for this combination shared by our community. Charge weights are only fully visible with an active Pro licence.
| Powder | Charge (gr) | C.O.L. | Barrel Length | Velocity (fps) | Pressure (psi) |
|---|---|---|---|---|---|
| 72.1 gr | 3.598" | 24.0" | 2419 fps | ••• | |
| 76.2 gr | 3.598" | 24.0" | 2518 fps | ••• | |
| 75.8 gr | 3.598" | 24.0" | 2458 fps | ••• | |
| ••• | 3.598" | 24.0" | 2544 fps | ••• | |
| ••• | 3.598" | 24.0" | 2585 fps | ••• | |
| ••• | 3.598" | 24.0" | 2630 fps | ••• | |
| ••• | 3.598" | 24.0" | 2473 fps | ••• | |
| ••• | 3.598" | 24.0" | 2526 fps | ••• | |
| ••• | 3.598" | 24.0" | 2573 fps | ••• | |
| ••• | 3.598" | 24.0" | 2477 fps | ••• | |
| ••• | 3.598" | 24.0" | 2524 fps | ••• | |
| ••• | 3.598" | 24.0" | 2506 fps | ••• | |
| ••• | 3.598" | 24.0" | 2613 fps | ••• | |
| ••• | 3.598" | 24.0" | 2663 fps | ••• | |
| ••• | 3.598" | 24.0" | 2337 fps | ••• | |
| ••• | 3.598" | 24.0" | 2454 fps | ••• | |
| ••• | 3.598" | 24.0" | 2569 fps | ••• | |
| ••• | 3.598" | 24.0" | 2411 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.