Load Specifications
Bullet Manufacturer:SAKO
Bullet Weight:200 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:1:14.0
Load data in caliber .300 WSM with .308 | 200gr | Sako Hammerhead bullet and 102 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-26 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>> | 82% | 54,389 psi | 85% | 2552 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,739 psi | 89% | 2631 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,866 psi | 83% | 2667 fps | 99.8% |
| Accurate 4064 | <<locked>> | 84% | 54,824 psi | 86% | 2605 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 55,405 psi | 87% | 2713 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 57,232 psi | 90% | 2677 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,998 psi | 86% | 2638 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,072 psi | 88% | 2753 fps | 98.7% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,737 psi | 84% | 2749 fps | 97.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 53,954 psi | 85% | 2753 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 56,246 psi | 88% | 2753 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,680 psi | 87% | 2657 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,869 psi | 88% | 2680 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,115 psi | 88% | 2762 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 57,276 psi | 90% | 2785 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,434 psi | 87% | 2743 fps | 98.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,504 psi | 82% | 2746 fps | 98.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,676 psi | 78% | 2680 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,337 psi | 68% | 2618 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,898 psi | 89% | 2867 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 57,203 psi | 90% | 2700 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,211 psi | 76% | 2674 fps | 97.6% |
| Bofors RP3 | <<locked>> | 86% | 56,420 psi | 88% | 2674 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,504 psi | 82% | 2746 fps | 98.5% |
| Bofors RP7 | <<locked>> | 90% | 55,680 psi | 87% | 2661 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 86% | 56,768 psi | 89% | 2690 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 55,201 psi | 87% | 2730 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 92% | 55,506 psi | 87% | 2697 fps | 98.9% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 56,405 psi | 88% | 2733 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 56,202 psi | 88% | 2687 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,810 psi | 86% | 2680 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 42,409 psi | 66% | 2644 fps | 96.8% |
| Hodgdon Superformance | <<locked>> | 90% | 53,838 psi | 84% | 2746 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 57% | 1631 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,491 psi | 85% | 2628 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 57,319 psi | 90% | 2641 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 57,130 psi | 90% | 2657 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 56,101 psi | 88% | 2644 fps | 99.6% |
| IMR 4350 | <<locked>> | 94% | 56,579 psi | 89% | 2694 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,377 psi | 90% | 2687 fps | 99.6% |
| IMR 4831 | <<locked>> | 98% | 56,579 psi | 89% | 2713 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 57,319 psi | 90% | 2703 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,521 psi | 87% | 2684 fps | 97.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 55,274 psi | 87% | 2785 fps | 97.7% |
| Lovex D073.6 | <<locked>> | 82% | 57,653 psi | 90% | 2651 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,898 psi | 88% | 2605 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,607 psi | 86% | 2615 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 57,348 psi | 90% | 2684 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 55,303 psi | 87% | 2677 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,918 psi | 69% | 2526 fps | 98.8% |
| Norma 201 | <<locked>> | 82% | 55,898 psi | 88% | 2621 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,579 psi | 89% | 2618 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,158 psi | 86% | 2667 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,566 psi | 90% | 2749 fps | 98.8% |
| Norma MRPᴾ | <<locked>> | 100% | 55,898 psi | 88% | 2828 fps | 99.7% |
| Norma URP | <<locked>> | 94% | 57,580 psi | 90% | 2746 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,869 psi | 88% | 2694 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,085 psi | 86% | 2792 fps | 98% |
| Ramshot Hunter | <<locked>> | 94% | 56,333 psi | 88% | 2753 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 51,561 psi | 81% | 2713 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,159 psi | 58% | 1670 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,811 psi | 89% | 2680 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,840 psi | 89% | 2743 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 57,058 psi | 89% | 2779 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,926 psi | 86% | 2733 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 57,363 psi | 90% | 2815 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,090 psi | 66% | 2635 fps | 97.8% |
| Rottweil R 902 | <<locked>> | 84% | 56,521 psi | 89% | 2621 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,536 psi | 89% | 2671 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 54,418 psi | 85% | 2674 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 98% | 54,621 psi | 86% | 2730 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 90% | 55,680 psi | 87% | 2661 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 92% | 57,348 psi | 90% | 2684 fps | 100% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,653 psi | 90% | 2651 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 54,607 psi | 86% | 2615 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,303 psi | 87% | 2677 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,592 psi | 86% | 2680 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,463 psi | 87% | 2651 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,869 psi | 89% | 2556 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 57,624 psi | 90% | 2556 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 57,319 psi | 90% | 2644 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 54,143 psi | 85% | 2723 fps | 98.6% |
| Somchem S335 | <<locked>> | 82% | 56,362 psi | 88% | 2552 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,536 psi | 89% | 2667 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 56,101 psi | 88% | 2667 fps | 97% |
| Somchem S365 | <<locked>> | 96% | 56,695 psi | 89% | 2743 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 55,317 psi | 87% | 2707 fps | 99.3% |
| Unknown powder | <<locked>> | 90% | 54,534 psi | 85% | 2700 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 56,782 psi | 89% | 2533 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,971 psi | 89% | 2579 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,347 psi | 88% | 2589 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 54,476 psi | 85% | 2602 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,158 psi | 86% | 2674 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,255 psi | 77% | 2605 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 84% | 56,072 psi | 88% | 2618 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,376 psi | 87% | 2717 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,564 psi | 87% | 2753 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 52,779 psi | 83% | 2766 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,811 psi | 87% | 2661 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 55,201 psi | 87% | 2730 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,889 psi | 70% | 2743 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 57,464 psi | 90% | 2730 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% | 51,010 psi | 80% | 2510 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,976 psi | 69% | 2431 fps | 97.2% |
| Accurate 3100 | <<locked>> | 84% | 30,850 psi | 48% | 2257 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 48,327 psi | 76% | 2516 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,840 psi | 58% | 2402 fps | 98.6% |
| ADI AR 2206H | <<locked>> | 80% | 53,838 psi | 84% | 2631 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,643 psi | 72% | 2493 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 40,698 psi | 64% | 2487 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 96% | 47,181 psi | 74% | 2638 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,299 psi | 79% | 2697 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 40,741 psi | 64% | 2487 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,137 psi | 72% | 2520 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,327 psi | 77% | 2582 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,955 psi | 56% | 2411 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,495 psi | 63% | 2523 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 40,292 psi | 63% | 2480 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 40,379 psi | 63% | 2530 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,295 psi | 41% | 2185 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 31,618 psi | 50% | 2346 fps | 95.7% |
| Alliant Reloder-26 | 57.9 gr | 82% | 29,863 psi | 47% | 2343 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 53,577 psi | 84% | 2651 fps | 100% |
| Bofors RP15 | <<locked>> | 94% | 39,842 psi | 62% | 2516 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 46,296 psi | 73% | 2530 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 40,379 psi | 63% | 2530 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 40,944 psi | 64% | 2415 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 46,760 psi | 73% | 2543 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 42,003 psi | 66% | 2510 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 80% | 38,305 psi | 60% | 2392 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 96% | 49,501 psi | 78% | 2625 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,562 psi | 53% | 2313 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,022 psi | 75% | 2582 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 39,682 psi | 62% | 2582 fps | 95.7% |
| Hodgdon Superformance | 58.3 gr | 80% | 37,637 psi | 59% | 2454 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,195 psi | 43% | 1457 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,298 psi | 76% | 2536 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 50,517 psi | 79% | 2552 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,034 psi | 71% | 2477 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,048 psi | 69% | 2448 fps | 97.9% |
| IMR 4350 | <<locked>> | 80% | 36,651 psi | 57% | 2346 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,235 psi | 66% | 2441 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 32,097 psi | 50% | 2283 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 50,604 psi | 79% | 2608 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 46,151 psi | 72% | 2533 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 94% | 44,991 psi | 71% | 2612 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 80% | 54,143 psi | 85% | 2605 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,562 psi | 82% | 2556 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,196 psi | 76% | 2523 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,842 psi | 62% | 2395 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 38,101 psi | 60% | 2379 fps | 96.7% |
| Lovex S071 | <<locked>> | 90% | 31,981 psi | 50% | 2283 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 52,518 psi | 82% | 2575 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,171 psi | 83% | 2572 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,689 psi | 76% | 2572 fps | 100% |
| Norma 204 | <<locked>> | 84% | 41,118 psi | 64% | 2477 fps | 95.4% |
| Norma MRP | <<locked>> | 86% | 34,650 psi | 54% | 2431 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 36,637 psi | 57% | 2395 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 80% | 48,834 psi | 77% | 2592 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 44,280 psi | 69% | 2608 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 35,491 psi | 56% | 2385 fps | 96.6% |
| Ramshot Magnum | <<locked>> | 92% | 38,130 psi | 60% | 2467 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,818 psi | 44% | 1493 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,847 psi | 73% | 2526 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,287 psi | 84% | 2694 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,033 psi | 67% | 2572 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,463 psi | 57% | 2418 fps | 98.3% |
| ReloadSwiss RS 70 | 56 gr | 80% | 35,491 psi | 56% | 2425 fps | 97.7% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 36,709 psi | 58% | 2510 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 50,169 psi | 79% | 2533 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,729 psi | 69% | 2480 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 44,991 psi | 71% | 2520 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 88% | 39,349 psi | 62% | 2464 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 40,944 psi | 64% | 2415 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,842 psi | 62% | 2395 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 54,143 psi | 85% | 2605 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 48,196 psi | 76% | 2523 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,101 psi | 60% | 2379 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,788 psi | 70% | 2533 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,199 psi | 82% | 2605 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,330 psi | 84% | 2510 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,092 psi | 71% | 2392 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,044 psi | 61% | 2346 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 38,972 psi | 61% | 2461 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 53,055 psi | 83% | 2510 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,019 psi | 69% | 2480 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 49,182 psi | 77% | 2566 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 33,127 psi | 52% | 2359 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 37,434 psi | 59% | 2398 fps | 95.6% |
| Unknown powder | <<locked>> | 80% | 39,552 psi | 62% | 2448 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 80% | 50,517 psi | 79% | 2451 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,314 psi | 79% | 2497 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,719 psi | 78% | 2503 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,826 psi | 59% | 2339 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,624 psi | 62% | 2421 fps | 99% |
| Vihtavuori N165 | <<locked>> | 92% | 38,029 psi | 60% | 2405 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 49,327 psi | 77% | 2526 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,074 psi | 63% | 2464 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 28,819 psi | 45% | 2254 fps | 96.7% |
| Vihtavuori N560 | <<locked>> | 96% | 46,427 psi | 73% | 2657 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,173 psi | 58% | 2369 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 42,003 psi | 66% | 2510 fps | 97.6% |
| Winchester StaBALL HD | <<locked>> | 80% | 23,264 psi | 36% | 2156 fps | 95.1% |
| Winchester Supreme 780 | <<locked>> | 88% | 40,364 psi | 63% | 2454 fps | 95.3% |
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 102 powders for .300 WSM loaded with the .308 | 200gr | Sako Hammerhead. 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 102 of the 102 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 200.0 gr projectile in 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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-26, Hodgdon Superformance rank at the top here: for .300 WSM with the .308 | 200gr | Sako Hammerhead 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.