Load data for .300 Rem. SA Ultra Mag. + 165gr Sierra GameKing
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
Bullet:.308 | 165gr | GameKing
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
Get PRO license to unlock all data and calculators
Community Loads for .300 Rem. SA Ultra Mag. + 165gr Sierra GameKing
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) |
|---|---|---|---|---|---|
| 51.0 gr | 2.825" | 24.0" | 2673 fps | ••• | |
| 52.3 gr | 2.825" | 24.0" | 2730 fps | ••• | |
| 53.5 gr | 2.825" | 24.0" | 2782 fps | ••• | |
| ••• | 2.825" | 24.0" | 2829 fps | ••• | |
| ••• | 2.825" | 24.0" | 2869 fps | ••• | |
| ••• | 2.825" | 24.0" | 2706 fps | ••• | |
| ••• | 2.825" | 24.0" | 2751 fps | ••• | |
| ••• | 2.825" | 24.0" | 2795 fps | ••• | |
| ••• | 2.825" | 24.0" | 2839 fps | ••• | |
| ••• | 2.825" | 24.0" | 2879 fps | ••• | |
| ••• | 2.825" | 24.0" | 2925 fps | ••• | |
| ••• | 2.825" | 24.0" | 2575 fps | ••• | |
| ••• | 2.825" | 24.0" | 2675 fps | ••• | |
| ••• | 2.825" | 24.0" | 2720 fps | ••• | |
| ••• | 2.825" | 24.0" | 2760 fps | ••• | |
| ••• | 2.825" | 24.0" | 2796 fps | ••• | |
| ••• | 2.825" | 24.0" | 2831 fps | ••• | |
| ••• | 2.825" | 24.0" | 2857 fps | ••• | |
| ••• | 2.825" | 24.0" | 2651 fps | ••• | |
| ••• | 2.825" | 24.0" | 2706 fps | ••• | |
| ••• | 2.825" | 24.0" | 2765 fps | ••• | |
| ••• | 2.825" | 24.0" | 2824 fps | ••• | |
| ••• | 2.825" | 24.0" | 2736 fps | ••• | |
| ••• | 2.825" | 24.0" | 2778 fps | ••• | |
| ••• | 2.825" | 24.0" | 2824 fps | ••• | |
| ••• | 2.825" | 24.0" | 2682 fps | ••• | |
| ••• | 2.825" | 24.0" | 2728 fps | ••• | |
| ••• | 2.825" | 24.0" | 2778 fps | ••• | |
| ••• | 2.825" | 24.0" | 2832 fps | ••• | |
| ••• | 2.825" | 24.0" | 2514 fps | ••• | |
| ••• | 2.825" | 24.0" | 2625 fps | ••• | |
| ••• | 2.825" | 24.0" | 2676 fps | ••• | |
| ••• | 2.825" | 24.0" | 2723 fps | ••• | |
| ••• | 2.825" | 24.0" | 2761 fps | ••• | |
| ••• | 2.825" | 24.0" | 2800 fps | ••• | |
| ••• | 2.825" | 24.0" | 2756 fps | ••• | |
| ••• | 2.825" | 24.0" | 2802 fps | ••• | |
| ••• | 2.825" | 24.0" | 2848 fps | ••• | |
| ••• | 2.825" | 24.0" | 2890 fps | ••• | |
| ••• | 2.825" | 24.0" | 2933 fps | ••• | |
| ••• | 2.825" | 24.0" | 2975 fps | ••• | |
| ••• | 2.825" | 24.0" | 2689 fps | ••• | |
| ••• | 2.825" | 24.0" | 2743 fps | ••• | |
| ••• | 2.825" | 24.0" | 2797 fps | ••• | |
| ••• | 2.825" | 24.0" | 2856 fps | ••• | |
| ••• | 2.825" | 24.0" | 2908 fps | ••• | |
| ••• | 2.825" | 24.0" | 2628 fps | ••• | |
| ••• | 2.825" | 24.0" | 2670 fps | ••• | |
| ••• | 2.825" | 24.0" | 2713 fps | ••• | |
| ••• | 2.825" | 24.0" | 2750 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.