Load data for .300 Rem. SA Ultra Mag. + 200gr 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 | 200gr | GameKing
Cartridge:.300 Rem. SA Ultra Mag. load data
Case Length (L3):2.003" | 50.9 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.620" | 15.8 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:1:12.0
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Community Loads for .300 Rem. SA Ultra Mag. + 200gr 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) |
|---|---|---|---|---|---|
| 52.1 gr | 2.825" | 24.0" | 2475 fps | ••• | |
| 54.7 gr | 2.825" | 24.0" | 2585 fps | ••• | |
| 56.0 gr | 2.825" | 24.0" | 2638 fps | ••• | |
| ••• | 2.825" | 24.0" | 2688 fps | ••• | |
| ••• | 2.825" | 24.0" | 2732 fps | ••• | |
| ••• | 2.825" | 24.0" | 2467 fps | ••• | |
| ••• | 2.825" | 24.0" | 2570 fps | ••• | |
| ••• | 2.825" | 24.0" | 2620 fps | ••• | |
| ••• | 2.825" | 24.0" | 2665 fps | ••• | |
| ••• | 2.825" | 24.0" | 2465 fps | ••• | |
| ••• | 2.825" | 24.0" | 2518 fps | ••• | |
| ••• | 2.825" | 24.0" | 2568 fps | ••• | |
| ••• | 2.825" | 24.0" | 2469 fps | ••• | |
| ••• | 2.825" | 24.0" | 2554 fps | ••• | |
| ••• | 2.825" | 24.0" | 2596 fps | ••• | |
| ••• | 2.825" | 24.0" | 2643 fps | ••• | |
| ••• | 2.825" | 24.0" | 2354 fps | ••• | |
| ••• | 2.825" | 24.0" | 2478 fps | ••• | |
| ••• | 2.825" | 24.0" | 2547 fps | ••• | |
| ••• | 2.825" | 24.0" | 2424 fps | ••• | |
| ••• | 2.825" | 24.0" | 2524 fps | ••• | |
| ••• | 2.825" | 24.0" | 2578 fps | ••• | |
| ••• | 2.825" | 24.0" | 2636 fps | ••• | |
| ••• | 2.825" | 24.0" | 2466 fps | ••• | |
| ••• | 2.825" | 24.0" | 2514 fps | ••• | |
| ••• | 2.825" | 24.0" | 2566 fps | ••• | |
| ••• | 2.825" | 24.0" | 2471 fps | ••• | |
| ••• | 2.825" | 24.0" | 2519 fps | ••• | |
| ••• | 2.825" | 24.0" | 2557 fps | ••• | |
| ••• | 2.825" | 24.0" | 2389 fps | ••• | |
| ••• | 2.825" | 24.0" | 2483 fps | ••• | |
| ••• | 2.825" | 24.0" | 2531 fps | ••• | |
| ••• | 2.825" | 24.0" | 2579 fps | ••• | |
| ••• | 2.825" | 24.0" | 2518 fps | ••• | |
| ••• | 2.825" | 24.0" | 2615 fps | ••• | |
| ••• | 2.825" | 24.0" | 2659 fps | ••• | |
| ••• | 2.825" | 24.0" | 2702 fps | ••• | |
| ••• | 2.825" | 24.0" | 2243 fps | ••• | |
| ••• | 2.825" | 24.0" | 2342 fps | ••• | |
| ••• | 2.825" | 24.0" | 2433 fps | ••• | |
| ••• | 2.825" | 24.0" | 2474 fps | ••• | |
| ••• | 2.825" | 24.0" | 2439 fps | ••• | |
| ••• | 2.825" | 24.0" | 2542 fps | ••• | |
| ••• | 2.825" | 24.0" | 2592 fps | ••• | |
| ••• | 2.825" | 24.0" | 2641 fps | ••• | |
| ••• | 2.825" | 24.0" | 2415 fps | ••• | |
| ••• | 2.825" | 24.0" | 2504 fps | ••• | |
| ••• | 2.825" | 24.0" | 2548 fps | ••• | |
| ••• | 2.825" | 24.0" | 2592 fps | ••• | |
| ••• | 2.825" | 24.0" | 2637 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.