Load Specifications
Load data in caliber .300 WSM with .308 | 180gr | Norma Semi Soft Point bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-16 and Hodgdon Superformance.
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 2495 | <<locked>> | 84% | 54,810 psi | 86% | 2707 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,449 psi | 88% | 2776 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,269 psi | 77% | 2749 fps | 98.9% |
| Accurate 4064 | <<locked>> | 86% | 55,013 psi | 86% | 2759 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,216 psi | 87% | 2858 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 54,418 psi | 85% | 2789 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,550 psi | 87% | 2795 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,434 psi | 88% | 2897 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,666 psi | 89% | 2785 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,360 psi | 85% | 2910 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,912 psi | 88% | 2812 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,188 psi | 88% | 2835 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,043 psi | 88% | 2913 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 57,406 psi | 90% | 2943 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,550 psi | 87% | 2884 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,994 psi | 77% | 2825 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,209 psi | 72% | 2772 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,495 psi | 63% | 2684 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,634 psi | 82% | 2956 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,201 psi | 85% | 2805 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 56,724 psi | 89% | 2828 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,994 psi | 77% | 2825 fps | 96.8% |
| Bofors RP7 | <<locked>> | 92% | 56,217 psi | 88% | 2808 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,521 psi | 89% | 2815 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,464 psi | 90% | 2848 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 54,041 psi | 85% | 2854 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 90% | 54,172 psi | 85% | 2818 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 82% | 55,042 psi | 86% | 2799 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,347 psi | 88% | 2838 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,824 psi | 86% | 2831 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,056 psi | 85% | 2890 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,143 psi | 57% | 1726 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,927 psi | 88% | 2795 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,448 psi | 87% | 2772 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,781 psi | 86% | 2772 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 54,447 psi | 85% | 2759 fps | 98.8% |
| IMR 4350 | <<locked>> | 96% | 56,884 psi | 89% | 2841 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,578 psi | 86% | 2789 fps | 98.8% |
| IMR 4831 | <<locked>> | 96% | 55,782 psi | 87% | 2851 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 57,653 psi | 90% | 2861 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 56,028 psi | 88% | 2825 fps | 96.2% |
| IMR 8208 XBR | <<locked>> | 82% | 56,666 psi | 89% | 2785 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,433 psi | 85% | 2759 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,826 psi | 89% | 2762 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,085 psi | 86% | 2769 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,346 psi | 85% | 2782 fps | 99.6% |
| Lovex S070 | <<locked>> | 94% | 55,463 psi | 87% | 2822 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 40,857 psi | 64% | 2602 fps | 97.3% |
| Norma 201 | <<locked>> | 84% | 56,594 psi | 89% | 2782 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,232 psi | 90% | 2779 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,463 psi | 87% | 2822 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,128 psi | 85% | 2838 fps | 97.4% |
| Norma MRPᴾ | <<locked>> | 100% | 51,938 psi | 81% | 2910 fps | 98.7% |
| Norma URP | <<locked>> | 96% | 57,696 psi | 90% | 2897 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 56,246 psi | 88% | 2848 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 56,434 psi | 88% | 2897 fps | 99.6% |
| Ramshot TAC | <<locked>> | 82% | 56,681 psi | 89% | 2812 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,550 psi | 89% | 2822 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,666 psi | 57% | 1765 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,464 psi | 90% | 2831 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,174 psi | 90% | 2904 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 57,014 psi | 89% | 2936 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,143 psi | 86% | 2884 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 57,653 psi | 90% | 2966 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 57,406 psi | 90% | 2756 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,232 psi | 90% | 2782 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,840 psi | 89% | 2825 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 54,708 psi | 86% | 2815 fps | 96.5% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,737 psi | 86% | 2871 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 92% | 56,217 psi | 88% | 2808 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,346 psi | 85% | 2782 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,433 psi | 85% | 2759 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,085 psi | 86% | 2769 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,463 psi | 87% | 2822 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,752 psi | 86% | 2835 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,506 psi | 87% | 2792 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,130 psi | 88% | 2808 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,479 psi | 90% | 2710 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,839 psi | 86% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,244 psi | 85% | 2736 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,244 psi | 85% | 2864 fps | 97.8% |
| Somchem S335 | <<locked>> | 84% | 57,174 psi | 90% | 2710 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,216 psi | 87% | 2779 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,753 psi | 89% | 2818 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 56,492 psi | 89% | 2808 fps | 96% |
| Somchem S365 | <<locked>> | 98% | 56,623 psi | 89% | 2897 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,347 psi | 87% | 2848 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 82% | 54,476 psi | 85% | 2648 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,334 psi | 90% | 2736 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,725 psi | 90% | 2753 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,723 psi | 86% | 2749 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,260 psi | 88% | 2838 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,747 psi | 75% | 2713 fps | 96.9% |
| Vihtavuori N530 | <<locked>> | 82% | 57,159 psi | 90% | 2782 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,883 psi | 88% | 2756 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,405 psi | 87% | 2844 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,837 psi | 81% | 2848 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,246 psi | 88% | 2812 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,493 psi | 90% | 2831 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,317 psi | 85% | 2861 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,684 psi | 65% | 2815 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,405 psi | 88% | 2818 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 51,866 psi | 81% | 2782 fps | 97.1% |
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 2495 | <<locked>> | 80% | 48,037 psi | 75% | 2615 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,209 psi | 72% | 2608 fps | 96.7% |
| Accurate 3100 | <<locked>> | 90% | 34,940 psi | 55% | 2477 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 45,469 psi | 71% | 2618 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,185 psi | 54% | 2470 fps | 97% |
| ADI AR 2206H | <<locked>> | 80% | 51,010 psi | 80% | 2736 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,308 psi | 68% | 2589 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 43,685 psi | 68% | 2674 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,098 psi | 83% | 2733 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,181 psi | 74% | 2792 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,526 psi | 68% | 2615 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,586 psi | 73% | 2680 fps | 99.8% |
| Alliant Reloder-16 | 52.5 gr | 80% | 33,837 psi | 53% | 2484 fps | 97.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,927 psi | 59% | 2605 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,076 psi | 68% | 2664 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 96% | 43,033 psi | 67% | 2710 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,310 psi | 41% | 2297 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,620 psi | 53% | 2513 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 86% | 31,981 psi | 50% | 2516 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,575 psi | 79% | 2749 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 43,671 psi | 68% | 2625 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 43,033 psi | 67% | 2710 fps | 95.1% |
| Bofors RP7 | <<locked>> | 82% | 41,205 psi | 65% | 2546 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,721 psi | 83% | 2762 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,208 psi | 69% | 2631 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 38,798 psi | 61% | 2575 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 82% | 42,076 psi | 66% | 2598 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 51,547 psi | 81% | 2746 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,241 psi | 49% | 2382 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,964 psi | 75% | 2726 fps | 100% |
| Hodgdon Superformance | 62.8 gr | 84% | 40,741 psi | 64% | 2644 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,050 psi | 42% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,269 psi | 77% | 2694 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,996 psi | 81% | 2726 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,542 psi | 71% | 2621 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,819 psi | 75% | 2648 fps | 97.8% |
| IMR 4350 | <<locked>> | 84% | 39,204 psi | 61% | 2526 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,248 psi | 63% | 2526 fps | 95.8% |
| IMR 4831 | <<locked>> | 80% | 33,141 psi | 52% | 2431 fps | 96.7% |
| IMR 4895 | <<locked>> | 80% | 47,747 psi | 75% | 2710 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,721 psi | 83% | 2772 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 53,098 psi | 83% | 2733 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,894 psi | 80% | 2710 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,169 psi | 79% | 2664 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,658 psi | 72% | 2621 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,652 psi | 59% | 2477 fps | 96.6% |
| Lovex S070 | <<locked>> | 82% | 38,348 psi | 60% | 2510 fps | 95.6% |
| Lovex S071 | <<locked>> | 96% | 36,013 psi | 56% | 2500 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 49,864 psi | 78% | 2680 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,401 psi | 79% | 2680 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,934 psi | 72% | 2667 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 44,121 psi | 69% | 2664 fps | 95% |
| Norma MRP | <<locked>> | 92% | 39,566 psi | 62% | 2667 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 34,243 psi | 54% | 2470 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 80% | 45,919 psi | 72% | 2687 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 35,607 psi | 56% | 2510 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 52,997 psi | 83% | 2756 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,040 psi | 83% | 2772 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,412 psi | 43% | 1578 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,338 psi | 69% | 2615 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,067 psi | 78% | 2795 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,335 psi | 63% | 2664 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,895 psi | 53% | 2487 fps | 96.5% |
| ReloadSwiss RS 70 | 57.4 gr | 80% | 33,301 psi | 52% | 2487 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 54,027 psi | 85% | 2710 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,616 psi | 75% | 2638 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,031 psi | 64% | 2569 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 48,080 psi | 75% | 2703 fps | 95% |
| Rottweil R 905 | <<locked>> | 94% | 44,875 psi | 70% | 2703 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 82% | 41,205 psi | 65% | 2546 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,652 psi | 59% | 2477 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,894 psi | 80% | 2710 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,658 psi | 72% | 2621 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,348 psi | 60% | 2510 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,192 psi | 66% | 2621 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,750 psi | 81% | 2736 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,559 psi | 78% | 2710 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,937 psi | 80% | 2621 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,888 psi | 67% | 2493 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,421 psi | 62% | 2477 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,454 psi | 70% | 2697 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 50,546 psi | 79% | 2618 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,488 psi | 81% | 2726 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,539 psi | 65% | 2572 fps | 99.7% |
| Somchem S361 | <<locked>> | 96% | 52,924 psi | 83% | 2753 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 30,792 psi | 48% | 2428 fps | 98.8% |
| Somchem S385 | <<locked>> | 90% | 39,943 psi | 63% | 2575 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 51,459 psi | 81% | 2608 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,659 psi | 75% | 2605 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,819 psi | 75% | 2615 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,624 psi | 62% | 2507 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 35,650 psi | 56% | 2470 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 96% | 41,887 psi | 66% | 2605 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 53,476 psi | 84% | 2733 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,224 psi | 72% | 2612 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,157 psi | 55% | 2474 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 82% | 28,587 psi | 45% | 2369 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,969 psi | 55% | 2444 fps | 98.9% |
| Winchester 748 | <<locked>> | 80% | 53,809 psi | 84% | 2779 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 38,972 psi | 61% | 2579 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,281 psi | 41% | 2369 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,255 psi | 77% | 2710 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 45,281 psi | 71% | 2674 fps | 95.5% |
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 117 powders for .300 WSM loaded with the .308 | 180gr | Norma Semi Soft Point. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,966 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,966 fps. Accurate 3100 gives the best case fill at 100 %, and 117 of the 117 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2209 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, Alliant Reloder-16, Hodgdon Superformance rank at the top here: for .300 WSM with the .308 | 180gr | Norma Semi Soft Point they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Baschieri & Pellagri 109, Hodgdon H1000 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.