Load Specifications
Load data in caliber .300 WSM with .308 | 165gr | Woodleigh PP SN bullet and 101 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% | 56,260 psi | 88% | 2818 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,680 psi | 87% | 2844 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,405 psi | 87% | 2900 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,187 psi | 86% | 2858 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,354 psi | 73% | 2812 fps | 97.7% |
| Accurate 4064 | <<locked>> | 88% | 55,927 psi | 88% | 2900 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,130 psi | 88% | 2995 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 55,419 psi | 87% | 2927 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,478 psi | 89% | 2930 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,998 psi | 85% | 2972 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,711 psi | 90% | 2923 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,666 psi | 87% | 2844 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,564 psi | 87% | 3054 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,855 psi | 89% | 2949 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,479 psi | 90% | 2976 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,884 psi | 89% | 3051 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,447 psi | 85% | 3025 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,823 psi | 83% | 2953 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,758 psi | 69% | 2838 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,566 psi | 60% | 2736 fps | 96.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,632 psi | 78% | 3022 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,303 psi | 87% | 2943 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 54,114 psi | 85% | 2917 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 57,435 psi | 90% | 2946 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,796 psi | 87% | 2854 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,711 psi | 90% | 2959 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,911 psi | 86% | 2930 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 56,536 psi | 89% | 3015 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 96% | 56,710 psi | 89% | 2972 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 84% | 55,999 psi | 88% | 2936 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,029 psi | 89% | 2972 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 56,115 psi | 88% | 2976 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,245 psi | 87% | 3025 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,911 psi | 56% | 1804 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 56,188 psi | 88% | 2923 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 54,911 psi | 86% | 2897 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,274 psi | 87% | 2900 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,433 psi | 85% | 2874 fps | 98.2% |
| IMR 4350 | <<locked>> | 96% | 54,447 psi | 85% | 2920 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,854 psi | 88% | 2923 fps | 98.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,563 psi | 84% | 2940 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 55,332 psi | 87% | 2953 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,711 psi | 90% | 2923 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,637 psi | 87% | 2904 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,549 psi | 85% | 2851 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,970 psi | 88% | 2907 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,448 psi | 87% | 2917 fps | 99.3% |
| Lovex S070 | <<locked>> | 96% | 56,652 psi | 89% | 2956 fps | 98.7% |
| Norma 201 | <<locked>> | 86% | 57,682 psi | 90% | 2923 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,868 psi | 86% | 2871 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,695 psi | 89% | 2963 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,056 psi | 86% | 2966 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 49,095 psi | 77% | 2972 fps | 97.3% |
| Norma URP | <<locked>> | 96% | 54,969 psi | 86% | 2979 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 57,421 psi | 90% | 2989 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,435 psi | 90% | 3035 fps | 99.3% |
| Ramshot TAC | <<locked>> | 82% | 54,520 psi | 85% | 2897 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,273 psi | 85% | 2913 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,376 psi | 57% | 1847 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,984 psi | 86% | 2913 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,462 psi | 85% | 2989 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,230 psi | 85% | 3025 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,724 psi | 87% | 3015 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,882 psi | 86% | 3045 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 55,100 psi | 86% | 2851 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,911 psi | 86% | 2871 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,682 psi | 90% | 2963 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,767 psi | 87% | 2943 fps | 95.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,779 psi | 81% | 2940 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 94% | 57,435 psi | 90% | 2946 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,448 psi | 87% | 2917 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,637 psi | 87% | 2904 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,970 psi | 88% | 2907 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,652 psi | 89% | 2956 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,898 psi | 88% | 2972 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,724 psi | 89% | 2930 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,377 psi | 90% | 2949 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,448 psi | 87% | 2808 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,999 psi | 88% | 2805 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,376 psi | 87% | 2867 fps | 98.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,300 psi | 80% | 2933 fps | 96.4% |
| Somchem S335 | <<locked>> | 84% | 55,042 psi | 86% | 2805 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,333 psi | 88% | 2917 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,653 psi | 90% | 2956 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 3031 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 52,634 psi | 82% | 2920 fps | 97.5% |
| Unknown powder | <<locked>> | 94% | 55,753 psi | 87% | 2986 fps | 99.6% |
| Vihtavuori N130 | <<locked>> | 82% | 57,377 psi | 90% | 2799 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,303 psi | 87% | 2785 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,897 psi | 86% | 2835 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 54,491 psi | 85% | 2838 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,593 psi | 87% | 2887 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,188 psi | 88% | 2953 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 57,305 psi | 90% | 2930 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,725 psi | 90% | 2913 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 56,608 psi | 89% | 3005 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,776 psi | 76% | 2920 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,348 psi | 90% | 2946 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,536 psi | 89% | 3015 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,421 psi | 62% | 2867 fps | 99.9% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,027 psi | 86% | 2943 fps | 96.8% |
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% | 52,968 psi | 83% | 2772 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,919 psi | 72% | 2703 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,837 psi | 81% | 2848 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 45,397 psi | 71% | 2690 fps | 95.6% |
| Accurate 3100 | <<locked>> | 94% | 37,768 psi | 59% | 2641 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 43,424 psi | 68% | 2703 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,314 psi | 51% | 2530 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 49,008 psi | 77% | 2822 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 41,452 psi | 65% | 2664 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 98% | 50,488 psi | 79% | 2910 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,053 psi | 80% | 2825 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,185 psi | 82% | 2799 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,092 psi | 71% | 2867 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,626 psi | 65% | 2690 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,585 psi | 70% | 2759 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,213 psi | 50% | 2536 fps | 95.2% |
| Alliant Reloder-17 | 57.8 gr | 80% | 36,172 psi | 57% | 2671 fps | 98.5% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,601 psi | 73% | 2841 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,239 psi | 44% | 2448 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,201 psi | 57% | 2674 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,737 psi | 54% | 2690 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,501 psi | 76% | 2831 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 41,597 psi | 65% | 2700 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 44,788 psi | 70% | 2723 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,373 psi | 82% | 2805 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,517 psi | 79% | 2851 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,206 psi | 66% | 2703 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 82% | 40,089 psi | 63% | 2710 fps | 95% |
| Hodgdon H4350 | <<locked>> | 90% | 47,195 psi | 74% | 2808 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 49,487 psi | 78% | 2831 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,762 psi | 47% | 2441 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,134 psi | 68% | 2759 fps | 99.7% |
| Hodgdon Superformance | 67.2 gr | 88% | 44,657 psi | 70% | 2831 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,861 psi | 42% | 1614 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,932 psi | 69% | 2717 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 45,527 psi | 71% | 2753 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,756 psi | 64% | 2644 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 82% | 42,815 psi | 67% | 2661 fps | 95.7% |
| IMR 4350 | <<locked>> | 88% | 42,366 psi | 66% | 2697 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,046 psi | 64% | 2651 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 32,387 psi | 51% | 2516 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 45,716 psi | 72% | 2792 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 51,053 psi | 80% | 2825 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,544 psi | 76% | 2795 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,501 psi | 76% | 2753 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 43,830 psi | 69% | 2707 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,085 psi | 57% | 2543 fps | 95.1% |
| Lovex S070 | <<locked>> | 86% | 41,481 psi | 65% | 2684 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 47,950 psi | 75% | 2769 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,414 psi | 76% | 2772 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,961 psi | 69% | 2746 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 48,211 psi | 76% | 2851 fps | 95.2% |
| Norma MRP | <<locked>> | 96% | 42,931 psi | 67% | 2848 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 32,518 psi | 51% | 2530 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 43,830 psi | 69% | 2762 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 38,493 psi | 60% | 2680 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 50,995 psi | 80% | 2838 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,705 psi | 79% | 2854 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,166 psi | 43% | 1650 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,438 psi | 67% | 2687 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,558 psi | 75% | 2874 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,493 psi | 60% | 2736 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 34,185 psi | 54% | 2598 fps | 95.6% |
| ReloadSwiss RS 70 | 61.6 gr | 84% | 36,361 psi | 57% | 2664 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 51,909 psi | 81% | 2802 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,629 psi | 72% | 2720 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 39,160 psi | 61% | 2644 fps | 99.1% |
| Rottweil R 904 | <<locked>> | 98% | 52,228 psi | 82% | 2884 fps | 95% |
| Rottweil R 905 | <<locked>> | 98% | 48,341 psi | 76% | 2877 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 86% | 44,788 psi | 70% | 2723 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,085 psi | 57% | 2543 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,544 psi | 76% | 2795 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,830 psi | 69% | 2707 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 41,481 psi | 65% | 2684 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,147 psi | 63% | 2694 fps | 98.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,603 psi | 78% | 2815 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,471 psi | 74% | 2789 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,008 psi | 77% | 2710 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,118 psi | 64% | 2579 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,815 psi | 67% | 2648 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,863 psi | 75% | 2871 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 48,718 psi | 76% | 2713 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,327 psi | 77% | 2808 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 39,755 psi | 62% | 2648 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 29,182 psi | 46% | 2480 fps | 97.4% |
| Somchem S385 | <<locked>> | 94% | 43,178 psi | 68% | 2749 fps | 95.2% |
| Unknown powder | <<locked>> | 80% | 35,215 psi | 55% | 2589 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 54,012 psi | 85% | 2753 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,267 psi | 73% | 2654 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,498 psi | 71% | 2694 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,237 psi | 71% | 2697 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,040 psi | 53% | 2497 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 80% | 35,201 psi | 55% | 2562 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 80% | 53,911 psi | 84% | 2881 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,933 psi | 70% | 2720 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,824 psi | 56% | 2608 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 86% | 30,574 psi | 48% | 2526 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,489 psi | 52% | 2510 fps | 97.8% |
| Winchester 760 | <<locked>> | 82% | 40,089 psi | 63% | 2710 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,427 psi | 45% | 2530 fps | 95.7% |
| Winchester Supreme 780 | <<locked>> | 96% | 47,645 psi | 75% | 2822 fps | 95.1% |
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 116 powders for .300 WSM loaded with the .308 | 165gr | Woodleigh PP SN. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,054 fps; across all powders the maximum-charge window runs from 1,804 fps to 3,054 fps. Accurate 3100 gives the best case fill at 100 %, and 116 of the 116 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 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, ADI AR 2213 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 | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Bofors RP15, Hodgdon H4831 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.