Load Specifications
Load data in caliber .300 WSM with .308 | 200gr | Speer Hot-Cor bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and Alliant Reloder-16.
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.
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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>> | 82% | 54,375 psi | 85% | 2552 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,768 psi | 89% | 2631 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,576 psi | 82% | 2661 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 54,781 psi | 86% | 2605 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,100 psi | 86% | 2710 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 56,971 psi | 89% | 2674 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,737 psi | 86% | 2635 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,086 psi | 88% | 2753 fps | 98.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,490 psi | 84% | 2743 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,551 psi | 90% | 2802 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,361 psi | 87% | 2654 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,883 psi | 88% | 2677 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,796 psi | 87% | 2759 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 57,334 psi | 90% | 2785 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,201 psi | 87% | 2740 fps | 98.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,228 psi | 82% | 2740 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,429 psi | 77% | 2677 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,178 psi | 68% | 2612 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,956 psi | 89% | 2867 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,927 psi | 89% | 2697 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,964 psi | 75% | 2667 fps | 97.5% |
| Bofors RP3 | <<locked>> | 86% | 56,391 psi | 88% | 2674 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,228 psi | 82% | 2740 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 55,724 psi | 87% | 2661 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 86% | 56,782 psi | 89% | 2690 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,969 psi | 86% | 2726 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 92% | 55,477 psi | 87% | 2694 fps | 98.9% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 56,144 psi | 88% | 2730 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 82% | 57,595 psi | 90% | 2680 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,246 psi | 88% | 2687 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,505 psi | 85% | 2674 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 42,264 psi | 66% | 2638 fps | 96.7% |
| Hodgdon Superformance | <<locked>> | 92% | 57,537 psi | 90% | 2799 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,448 psi | 57% | 1631 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,696 psi | 90% | 2671 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 57,305 psi | 90% | 2641 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 57,101 psi | 89% | 2654 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,840 psi | 88% | 2638 fps | 99.5% |
| IMR 4350 | <<locked>> | 94% | 56,579 psi | 89% | 2694 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,363 psi | 90% | 2687 fps | 99.6% |
| IMR 4831 | <<locked>> | 98% | 56,333 psi | 88% | 2710 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 57,290 psi | 90% | 2703 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,579 psi | 87% | 2684 fps | 97.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,013 psi | 86% | 2782 fps | 97.7% |
| Lovex D073.6 | <<locked>> | 82% | 57,638 psi | 90% | 2651 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,912 psi | 88% | 2602 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,563 psi | 86% | 2612 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,392 psi | 90% | 2680 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 55,085 psi | 86% | 2674 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,903 psi | 69% | 2526 fps | 98.8% |
| Norma 201 | <<locked>> | 82% | 55,840 psi | 88% | 2621 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,579 psi | 89% | 2615 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,172 psi | 86% | 2667 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,319 psi | 90% | 2746 fps | 98.8% |
| Norma MRPᴾ | <<locked>> | 100% | 55,622 psi | 87% | 2822 fps | 99.7% |
| Norma URP | <<locked>> | 94% | 57,305 psi | 90% | 2740 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,622 psi | 87% | 2687 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 54,839 psi | 86% | 2785 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 94% | 56,043 psi | 88% | 2746 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,372 psi | 81% | 2710 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,057 psi | 58% | 1670 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,536 psi | 89% | 2677 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,811 psi | 89% | 2743 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,753 psi | 89% | 2772 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,911 psi | 86% | 2733 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 57,145 psi | 90% | 2812 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,930 psi | 66% | 2631 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 84% | 56,521 psi | 89% | 2621 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,246 psi | 88% | 2667 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,201 psi | 85% | 2671 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 98% | 54,360 psi | 85% | 2723 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 90% | 55,724 psi | 87% | 2661 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,392 psi | 90% | 2680 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,638 psi | 90% | 2651 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 54,563 psi | 86% | 2612 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,085 psi | 86% | 2674 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,317 psi | 85% | 2677 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,477 psi | 87% | 2651 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,579 psi | 89% | 2549 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,348 psi | 90% | 2552 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 57,101 psi | 89% | 2638 fps | 99.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,595 psi | 90% | 2772 fps | 99.1% |
| Somchem S335 | <<locked>> | 82% | 56,362 psi | 88% | 2552 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,289 psi | 88% | 2661 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,898 psi | 88% | 2664 fps | 96.9% |
| Somchem S365 | <<locked>> | 96% | 56,681 psi | 89% | 2743 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,042 psi | 86% | 2700 fps | 99.2% |
| Unknown powder | <<locked>> | 90% | 54,549 psi | 85% | 2700 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 56,739 psi | 89% | 2530 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,927 psi | 89% | 2579 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,333 psi | 88% | 2589 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,505 psi | 85% | 2602 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,868 psi | 86% | 2667 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,023 psi | 77% | 2598 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 84% | 55,782 psi | 87% | 2612 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,419 psi | 87% | 2717 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,579 psi | 87% | 2753 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 52,808 psi | 83% | 2766 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,550 psi | 87% | 2657 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,969 psi | 86% | 2726 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,657 psi | 70% | 2736 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 57,232 psi | 90% | 2723 fps | 98.8% |
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 2495 | <<locked>> | 80% | 50,981 psi | 80% | 2507 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,772 psi | 69% | 2428 fps | 97.2% |
| Accurate 3100 | <<locked>> | 84% | 30,821 psi | 48% | 2257 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 48,254 psi | 76% | 2513 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,593 psi | 57% | 2395 fps | 98.6% |
| ADI AR 2206H | <<locked>> | 80% | 53,519 psi | 84% | 2628 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,629 psi | 72% | 2493 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 40,669 psi | 64% | 2484 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 96% | 46,992 psi | 74% | 2631 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,024 psi | 78% | 2694 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,093 psi | 72% | 2516 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,066 psi | 77% | 2579 fps | 100% |
| Alliant Reloder-16 | 51.1 gr | 80% | 35,911 psi | 56% | 2408 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,495 psi | 63% | 2523 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 40,277 psi | 63% | 2480 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 40,161 psi | 63% | 2523 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,281 psi | 41% | 2185 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 31,647 psi | 50% | 2346 fps | 95.7% |
| Alliant Reloder-26 | 57.8 gr | 82% | 29,834 psi | 47% | 2343 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,330 psi | 84% | 2644 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 39,624 psi | 62% | 2510 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 46,267 psi | 73% | 2530 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 40,161 psi | 63% | 2523 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 40,930 psi | 64% | 2411 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 46,731 psi | 73% | 2539 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 42,003 psi | 66% | 2510 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 80% | 38,261 psi | 60% | 2392 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 49,269 psi | 77% | 2621 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 54,157 psi | 85% | 2635 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,344 psi | 52% | 2306 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,022 psi | 75% | 2579 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 39,697 psi | 62% | 2582 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 37,420 psi | 59% | 2448 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,282 psi | 43% | 1457 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,037 psi | 75% | 2533 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,473 psi | 79% | 2552 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,788 psi | 70% | 2470 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,019 psi | 69% | 2448 fps | 97.9% |
| IMR 4350 | <<locked>> | 80% | 36,448 psi | 57% | 2343 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,221 psi | 66% | 2438 fps | 97.4% |
| IMR 4831 | <<locked>> | 80% | 32,082 psi | 50% | 2280 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 50,343 psi | 79% | 2605 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 46,195 psi | 72% | 2533 fps | 95% |
| IMR 7828 SSC | <<locked>> | 94% | 44,991 psi | 71% | 2608 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 80% | 53,838 psi | 84% | 2602 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,576 psi | 82% | 2556 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,182 psi | 76% | 2520 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,784 psi | 62% | 2395 fps | 98.1% |
| Lovex S070 | <<locked>> | 80% | 38,072 psi | 60% | 2379 fps | 96.7% |
| Lovex S071 | <<locked>> | 90% | 31,952 psi | 50% | 2283 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 52,475 psi | 82% | 2575 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,127 psi | 83% | 2569 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,443 psi | 76% | 2566 fps | 100% |
| Norma 204 | <<locked>> | 84% | 40,872 psi | 64% | 2470 fps | 95.3% |
| Norma MRP | <<locked>> | 88% | 36,941 psi | 58% | 2484 fps | 96% |
| Norma URP | <<locked>> | 80% | 36,608 psi | 57% | 2395 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 80% | 48,602 psi | 76% | 2589 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 44,106 psi | 69% | 2605 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 35,302 psi | 55% | 2379 fps | 96.5% |
| Ramshot Magnum | <<locked>> | 92% | 38,159 psi | 60% | 2467 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,702 psi | 43% | 1490 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,586 psi | 73% | 2523 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,953 psi | 83% | 2687 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,004 psi | 67% | 2572 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,260 psi | 57% | 2411 fps | 98.2% |
| ReloadSwiss RS 70 | 55.8 gr | 80% | 35,273 psi | 55% | 2418 fps | 97.6% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 36,564 psi | 57% | 2503 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 49,893 psi | 78% | 2530 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,671 psi | 68% | 2480 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 45,020 psi | 71% | 2520 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 88% | 39,146 psi | 61% | 2461 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 40,930 psi | 64% | 2411 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,784 psi | 62% | 2395 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,838 psi | 84% | 2602 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,182 psi | 76% | 2520 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,072 psi | 60% | 2379 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,556 psi | 70% | 2530 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,953 psi | 81% | 2602 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,345 psi | 84% | 2507 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,049 psi | 71% | 2388 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,827 psi | 61% | 2339 fps | 96.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 38,769 psi | 61% | 2454 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 53,055 psi | 83% | 2507 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,976 psi | 69% | 2477 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 48,950 psi | 77% | 2559 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 32,909 psi | 52% | 2352 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 37,405 psi | 59% | 2398 fps | 95.6% |
| Unknown powder | <<locked>> | 80% | 39,305 psi | 62% | 2441 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 80% | 50,473 psi | 79% | 2451 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,285 psi | 79% | 2493 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,676 psi | 78% | 2500 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,768 psi | 59% | 2339 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,407 psi | 62% | 2418 fps | 99% |
| Vihtavuori N165 | <<locked>> | 92% | 37,840 psi | 59% | 2398 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 49,327 psi | 77% | 2526 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,059 psi | 63% | 2461 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 28,776 psi | 45% | 2254 fps | 96.7% |
| Vihtavuori N560 | <<locked>> | 96% | 46,209 psi | 72% | 2651 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,956 psi | 58% | 2365 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 42,003 psi | 66% | 2510 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 82% | 24,685 psi | 39% | 2211 fps | 96.4% |
| Winchester Supreme 780 | <<locked>> | 88% | 40,132 psi | 63% | 2448 fps | 95.2% |
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 110 powders for .300 WSM loaded with the .308 | 200gr | Speer Hot-Cor. Alliant Reloder-26 delivers the highest muzzle velocity at 2,867 fps; across all powders the maximum-charge window runs from 1,631 fps to 2,867 fps. Accurate 3100 gives the best case fill at 100 %, and 110 of the 110 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.308" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, 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. Alliant Reloder-26, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for .300 WSM with the .308 | 200gr | Speer Hot-Cor they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 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.