Load data for .300 Rem. SA Ultra Mag. + 135gr Sierra HPBT MatchKing
Based on SAAMI, the max. allowed case length is 2.015 in / 51.18 mm, the max. cartridge length is 2.825 in / 71.75 mm, and the max. allowed pressure is 65,000 PSI / 4,482 bar.
Based on SAAMI, the max. allowed case length is 2.015 in / 51.18 mm, the max. cartridge length is 2.825 in / 71.75 mm, and the max. allowed pressure is 65,000 PSI / 4,482 bar.
Load Specifications
ImperialMetric
Cartridge:.300 Rem. SA Ultra Mag. load data
Case Length (L3):2.003" | 50.9 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.458" | 11.6 mm
Case Capacity:74 gow | 4.80 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (SAAMI):65,000 psi | 4,482 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:15.0
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Community Loads for .300 Rem. SA Ultra Mag. + 135gr Sierra HPBT 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) |
|---|---|---|---|---|---|
| 53.3 gr | 2.825" | 24.0" | 2833 fps | ••• | |
| 55.8 gr | 2.825" | 24.0" | 2948 fps | ••• | |
| 57.8 gr | 2.825" | 24.0" | 3039 fps | ••• | |
| ••• | 2.825" | 24.0" | 3106 fps | ••• | |
| ••• | 2.825" | 24.0" | 2754 fps | ••• | |
| ••• | 2.825" | 24.0" | 2846 fps | ••• | |
| ••• | 2.825" | 24.0" | 2929 fps | ••• | |
| ••• | 2.825" | 24.0" | 3006 fps | ••• | |
| ••• | 2.825" | 24.0" | 3079 fps | ••• | |
| ••• | 2.825" | 24.0" | 2846 fps | ••• | |
| ••• | 2.825" | 24.0" | 2948 fps | ••• | |
| ••• | 2.825" | 24.0" | 3049 fps | ••• | |
| ••• | 2.825" | 24.0" | 3150 fps | ••• | |
| ••• | 2.825" | 24.0" | 3073 fps | ••• | |
| ••• | 2.825" | 24.0" | 2860 fps | ••• | |
| ••• | 2.825" | 24.0" | 2933 fps | ••• | |
| ••• | 2.825" | 24.0" | 3014 fps | ••• | |
| ••• | 2.825" | 24.0" | 3101 fps | ••• | |
| ••• | 2.825" | 24.0" | 2700 fps | ••• | |
| ••• | 2.825" | 24.0" | 2799 fps | ••• | |
| ••• | 2.825" | 24.0" | 2894 fps | ••• | |
| ••• | 2.825" | 24.0" | 2986 fps | ••• | |
| ••• | 2.825" | 24.0" | 2953 fps | ••• | |
| ••• | 2.825" | 24.0" | 3035 fps | ••• | |
| ••• | 2.825" | 24.0" | 3124 fps | ••• | |
| ••• | 2.825" | 24.0" | 3216 fps | ••• | |
| ••• | 2.825" | 24.0" | 2819 fps | ••• | |
| ••• | 2.825" | 24.0" | 2913 fps | ••• | |
| ••• | 2.825" | 24.0" | 3013 fps | ••• | |
| ••• | 2.825" | 24.0" | 3124 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.