Load Specifications
Bullet Manufacturer:Sierra
Bullet Weight:165 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 WSM load data
Case Length (l3):2.09"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:81.3 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:13.5
Load data in caliber .300 WSM with .308 | 165gr | Sierra SBT GameKing bullet and 99 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance and Alliant Reloder-17.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 55,637 psi | 87% | 2808 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,013 psi | 86% | 2835 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,188 psi | 88% | 2897 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 57,043 psi | 89% | 2894 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,513 psi | 71% | 2792 fps | 97.4% |
| Accurate 4064 | <<locked>> | 88% | 55,071 psi | 86% | 2884 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,085 psi | 86% | 2976 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 54,897 psi | 86% | 2917 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,014 psi | 88% | 2917 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,171 psi | 83% | 2953 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,188 psi | 90% | 2913 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,940 psi | 86% | 2835 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,549 psi | 85% | 3035 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 52,779 psi | 83% | 2949 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,318 psi | 88% | 2940 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,710 psi | 89% | 2963 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,173 psi | 88% | 3035 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 57,551 psi | 90% | 3068 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 51,996 psi | 81% | 2936 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,178 psi | 68% | 2825 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,617 psi | 76% | 3002 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,636 psi | 86% | 2930 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 57,029 psi | 89% | 2956 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 56,782 psi | 89% | 2930 fps | 98.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,245 psi | 87% | 2844 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,942 psi | 89% | 2946 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,172 psi | 85% | 2917 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 94% | 54,056 psi | 85% | 2969 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 92% | 54,534 psi | 85% | 2933 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 84% | 55,448 psi | 87% | 2923 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,057 psi | 88% | 2953 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,056 psi | 86% | 2956 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,404 psi | 85% | 3009 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,853 psi | 56% | 1801 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,420 psi | 88% | 2923 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,811 psi | 87% | 2907 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,303 psi | 87% | 2897 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,027 psi | 86% | 2877 fps | 98.2% |
| IMR 4350 | <<locked>> | 98% | 57,188 psi | 90% | 2956 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,201 psi | 87% | 2910 fps | 98.2% |
| IMR 4831 | <<locked>> | 98% | 55,724 psi | 87% | 2969 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 54,505 psi | 85% | 2936 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,188 psi | 90% | 2913 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,824 psi | 86% | 2887 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,305 psi | 90% | 2887 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,477 psi | 87% | 2894 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,795 psi | 86% | 2900 fps | 99.1% |
| Lovex S070 | <<locked>> | 96% | 55,782 psi | 87% | 2940 fps | 98.6% |
| Norma 201 | <<locked>> | 86% | 57,116 psi | 90% | 2910 fps | 100% |
| Norma 202 | <<locked>> | 86% | 57,725 psi | 90% | 2907 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,956 psi | 88% | 2949 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,520 psi | 85% | 2953 fps | 96.5% |
| Norma MRPᴾ | <<locked>> | 100% | 48,298 psi | 76% | 2953 fps | 97.1% |
| Norma URP | <<locked>> | 98% | 57,740 psi | 90% | 3018 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 56,652 psi | 89% | 2976 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 56,550 psi | 89% | 3018 fps | 99.2% |
| Ramshot TAC | <<locked>> | 84% | 57,334 psi | 90% | 2936 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 57,319 psi | 90% | 2953 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,318 psi | 57% | 1841 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,302 psi | 85% | 2897 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 57,435 psi | 90% | 3031 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 57,246 psi | 90% | 3068 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,042 psi | 86% | 3002 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,070 psi | 85% | 3025 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 82% | 54,462 psi | 85% | 2838 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 57,725 psi | 90% | 2910 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,826 psi | 89% | 2946 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,865 psi | 80% | 2920 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 94% | 56,782 psi | 89% | 2930 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,795 psi | 86% | 2900 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,824 psi | 86% | 2887 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,477 psi | 87% | 2894 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,782 psi | 87% | 2940 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,882 psi | 86% | 2956 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 55,999 psi | 88% | 2913 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,695 psi | 89% | 2936 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,868 psi | 86% | 2795 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,216 psi | 87% | 2792 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,781 psi | 86% | 2851 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,386 psi | 79% | 2913 fps | 96.1% |
| Somchem S335 | <<locked>> | 84% | 54,259 psi | 85% | 2792 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,622 psi | 87% | 2904 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,174 psi | 90% | 2946 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,159 psi | 88% | 3018 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,793 psi | 81% | 2904 fps | 97.2% |
| Vihtavuori N133 | <<locked>> | 84% | 55,245 psi | 87% | 2779 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 57,450 psi | 90% | 2864 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,723 psi | 86% | 2835 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,897 psi | 86% | 2871 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 56,376 psi | 88% | 2956 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 54,012 psi | 85% | 2861 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 56,420 psi | 88% | 2881 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,376 psi | 87% | 2963 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,819 psi | 75% | 2900 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,521 psi | 89% | 2933 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,273 psi | 85% | 2910 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,288 psi | 85% | 2976 fps | 98.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,783 psi | 61% | 2848 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 56,826 psi | 89% | 2946 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 52,344 psi | 82% | 2759 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,252 psi | 71% | 2690 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,562 psi | 82% | 2844 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,859 psi | 69% | 2664 fps | 95% |
| Accurate 3100 | <<locked>> | 94% | 37,144 psi | 58% | 2625 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 42,801 psi | 67% | 2690 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 33,982 psi | 53% | 2572 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 48,399 psi | 76% | 2808 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 41,147 psi | 64% | 2654 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 98% | 49,719 psi | 78% | 2890 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,502 psi | 79% | 2812 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,459 psi | 81% | 2789 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,353 psi | 70% | 2851 fps | 99% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 49,632 psi | 78% | 2894 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,104 psi | 64% | 2680 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,048 psi | 69% | 2746 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 82% | 33,982 psi | 53% | 2585 fps | 95.9% |
| Alliant Reloder-17 | 57 gr | 80% | 35,549 psi | 56% | 2654 fps | 98.2% |
| Alliant Reloder-19 | <<locked>> | 98% | 48,936 psi | 77% | 2881 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 88% | 29,617 psi | 46% | 2490 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,069 psi | 53% | 2667 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,776 psi | 75% | 2815 fps | 99.2% |
| Bofors RP3 | <<locked>> | 80% | 41,075 psi | 64% | 2687 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 44,353 psi | 70% | 2713 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,822 psi | 81% | 2792 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,734 psi | 78% | 2835 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,510 psi | 65% | 2687 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 86% | 41,582 psi | 65% | 2740 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 88% | 47,877 psi | 75% | 2818 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 48,921 psi | 77% | 2818 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,327 psi | 46% | 2425 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,121 psi | 71% | 2792 fps | 99.9% |
| Hodgdon Superformance | 66.3 gr | 88% | 43,947 psi | 69% | 2812 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,701 psi | 42% | 1608 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,789 psi | 73% | 2769 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 48,820 psi | 77% | 2802 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,236 psi | 68% | 2690 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,585 psi | 71% | 2710 fps | 96.4% |
| IMR 4350 | <<locked>> | 90% | 44,570 psi | 70% | 2740 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 84% | 43,120 psi | 68% | 2690 fps | 95.6% |
| IMR 4831 | <<locked>> | 82% | 33,025 psi | 52% | 2530 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 45,165 psi | 71% | 2776 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 50,502 psi | 79% | 2812 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,964 psi | 75% | 2782 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,950 psi | 75% | 2736 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 43,250 psi | 68% | 2690 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 37,869 psi | 59% | 2582 fps | 95.6% |
| Lovex S070 | <<locked>> | 86% | 40,828 psi | 64% | 2667 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 47,369 psi | 74% | 2756 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,819 psi | 75% | 2759 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,424 psi | 68% | 2733 fps | 99.3% |
| Norma 204 | <<locked>> | 94% | 50,879 psi | 80% | 2894 fps | 95.7% |
| Norma MRP | <<locked>> | 96% | 42,250 psi | 66% | 2828 fps | 95.3% |
| Norma URP | <<locked>> | 82% | 34,171 psi | 54% | 2572 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 43,149 psi | 68% | 2746 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 37,898 psi | 59% | 2667 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 50,343 psi | 79% | 2822 fps | 98.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,198 psi | 79% | 2844 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 43% | 1647 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,756 psi | 65% | 2667 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,731 psi | 73% | 2854 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,855 psi | 59% | 2720 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 33,721 psi | 53% | 2585 fps | 95.3% |
| ReloadSwiss RS 70 | 60.8 gr | 84% | 35,853 psi | 56% | 2651 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 51,256 psi | 80% | 2789 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,063 psi | 71% | 2707 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 38,609 psi | 61% | 2631 fps | 99% |
| Rottweil R 905 | <<locked>> | 98% | 47,747 psi | 75% | 2864 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 86% | 44,353 psi | 70% | 2713 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,869 psi | 59% | 2582 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,964 psi | 75% | 2782 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,250 psi | 68% | 2690 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 40,828 psi | 64% | 2667 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,450 psi | 62% | 2677 fps | 98.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,863 psi | 77% | 2799 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,731 psi | 73% | 2772 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,443 psi | 76% | 2700 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,553 psi | 64% | 2562 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,395 psi | 66% | 2638 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,282 psi | 74% | 2858 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 48,167 psi | 75% | 2700 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,631 psi | 76% | 2795 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 39,218 psi | 61% | 2631 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 28,747 psi | 45% | 2467 fps | 97.2% |
| Somchem S385 | <<locked>> | 96% | 45,310 psi | 71% | 2789 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 48,834 psi | 77% | 2687 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,831 psi | 70% | 2680 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,339 psi | 71% | 2694 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,362 psi | 59% | 2566 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 33,402 psi | 52% | 2520 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 50,778 psi | 80% | 2808 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 43,584 psi | 68% | 2680 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 35,099 psi | 55% | 2572 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 88% | 32,140 psi | 50% | 2569 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,982 psi | 52% | 2493 fps | 97.6% |
| Winchester 748 | <<locked>> | 80% | 50,778 psi | 80% | 2854 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 41,582 psi | 65% | 2740 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,876 psi | 44% | 2507 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,514 psi | 73% | 2779 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 99 powders for .300 WSM loaded with the .308 | 165gr | Sierra SBT GameKing. Alliant Reloder-17 delivers the highest muzzle velocity at 3,068 fps; across all powders the maximum-charge window runs from 1,801 fps to 3,068 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. ReloadSwiss RS 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 WSM with the .308 | 165gr | Sierra SBT GameKing they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.