Load Specifications
Bullet Manufacturer:Sierra
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:1:12.0
Load data in caliber .300 WSM with .308 | 200gr | Sierra MatchKing bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Alliant Reloder-26.
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% | 57,014 psi | 89% | 2579 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,898 psi | 88% | 2612 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,706 psi | 81% | 2644 fps | 99.6% |
| Accurate 4064 | <<locked>> | 86% | 57,145 psi | 90% | 2631 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,070 psi | 85% | 2690 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 56,391 psi | 88% | 2664 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,464 psi | 90% | 2667 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,969 psi | 86% | 2730 fps | 98.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,765 psi | 83% | 2726 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,753 psi | 89% | 2785 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,549 psi | 85% | 2638 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,766 psi | 86% | 2661 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,824 psi | 86% | 2743 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,217 psi | 88% | 2766 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,317 psi | 85% | 2720 fps | 98.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,416 psi | 81% | 2723 fps | 98.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,573 psi | 76% | 2664 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,279 psi | 66% | 2592 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,463 psi | 87% | 2844 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,202 psi | 88% | 2684 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,210 psi | 74% | 2651 fps | 97.2% |
| Bofors RP3 | <<locked>> | 86% | 55,274 psi | 87% | 2654 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,416 psi | 81% | 2723 fps | 98.2% |
| Bofors RP7 | <<locked>> | 90% | 54,737 psi | 86% | 2641 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 86% | 55,738 psi | 87% | 2671 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,012 psi | 85% | 2707 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 92% | 54,549 psi | 85% | 2677 fps | 98.7% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,376 psi | 87% | 2710 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 82% | 57,014 psi | 89% | 2667 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,216 psi | 87% | 2671 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 57,217 psi | 90% | 2707 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 41,394 psi | 65% | 2615 fps | 96.2% |
| Hodgdon Superformance | <<locked>> | 92% | 56,666 psi | 89% | 2782 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,303 psi | 57% | 1621 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,869 psi | 89% | 2654 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,231 psi | 88% | 2621 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,275 psi | 88% | 2641 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,114 psi | 86% | 2621 fps | 99.4% |
| IMR 4350 | <<locked>> | 94% | 55,709 psi | 87% | 2677 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,449 psi | 88% | 2667 fps | 99.5% |
| IMR 4831 | <<locked>> | 98% | 55,288 psi | 87% | 2694 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,202 psi | 88% | 2684 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,563 psi | 86% | 2664 fps | 96.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,998 psi | 85% | 2759 fps | 97.3% |
| Lovex D073.6 | <<locked>> | 82% | 56,768 psi | 89% | 2635 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,085 psi | 86% | 2585 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,956 psi | 89% | 2641 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,434 psi | 88% | 2664 fps | 99.9% |
| Lovex S070 | <<locked>> | 94% | 57,638 psi | 90% | 2703 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,047 psi | 67% | 2510 fps | 98.6% |
| Norma 201 | <<locked>> | 82% | 54,998 psi | 86% | 2605 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,680 psi | 87% | 2602 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,595 psi | 90% | 2694 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,463 psi | 88% | 2730 fps | 98.6% |
| Norma MRPᴾ | <<locked>> | 100% | 54,534 psi | 85% | 2802 fps | 99.5% |
| Norma URP | <<locked>> | 94% | 56,289 psi | 88% | 2723 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,839 psi | 86% | 2674 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,882 psi | 84% | 2766 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 94% | 55,172 psi | 86% | 2730 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,169 psi | 79% | 2684 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,912 psi | 58% | 1660 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,898 psi | 88% | 2661 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,898 psi | 88% | 2726 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,651 psi | 87% | 2756 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,580 psi | 90% | 2766 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,970 psi | 88% | 2792 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,176 psi | 65% | 2608 fps | 97.3% |
| Rottweil R 902 | <<locked>> | 84% | 55,651 psi | 87% | 2605 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,405 psi | 87% | 2651 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,927 psi | 89% | 2703 fps | 97.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 57,174 psi | 90% | 2759 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 90% | 54,737 psi | 86% | 2641 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,434 psi | 88% | 2664 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,768 psi | 89% | 2635 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,956 psi | 89% | 2641 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,638 psi | 90% | 2703 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,058 psi | 89% | 2710 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,508 psi | 90% | 2667 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,723 psi | 86% | 2635 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,941 psi | 88% | 2536 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,536 psi | 89% | 2539 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,188 psi | 88% | 2621 fps | 99.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,666 psi | 89% | 2756 fps | 98.9% |
| Somchem S335 | <<locked>> | 82% | 55,521 psi | 87% | 2536 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,188 psi | 90% | 2654 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,463 psi | 87% | 2648 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 54,955 psi | 86% | 2648 fps | 96.7% |
| Somchem S365 | <<locked>> | 96% | 55,317 psi | 87% | 2723 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,244 psi | 85% | 2687 fps | 99.1% |
| Unknown powder | <<locked>> | 92% | 57,116 psi | 90% | 2730 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 56,086 psi | 88% | 2516 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,956 psi | 88% | 2566 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,463 psi | 87% | 2575 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 57,000 psi | 89% | 2631 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,551 psi | 90% | 2700 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,225 psi | 76% | 2582 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 84% | 55,013 psi | 86% | 2598 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,433 psi | 85% | 2697 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,273 psi | 85% | 2733 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 51,764 psi | 81% | 2746 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,505 psi | 85% | 2641 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,012 psi | 85% | 2707 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,743 psi | 69% | 2717 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,173 psi | 88% | 2707 fps | 98.6% |
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% | 49,980 psi | 78% | 2490 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,134 psi | 68% | 2411 fps | 96.9% |
| Accurate 3100 | <<locked>> | 86% | 32,126 psi | 50% | 2287 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 47,384 psi | 74% | 2500 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,013 psi | 56% | 2382 fps | 98.4% |
| ADI AR 2206H | <<locked>> | 80% | 52,953 psi | 83% | 2615 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,049 psi | 71% | 2480 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 90% | 42,569 psi | 67% | 2520 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 96% | 46,267 psi | 73% | 2612 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,211 psi | 77% | 2677 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,252 psi | 71% | 2500 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,457 psi | 76% | 2566 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,215 psi | 55% | 2388 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,755 psi | 62% | 2507 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 39,479 psi | 62% | 2461 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 92% | 39,595 psi | 62% | 2507 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,744 psi | 40% | 2165 fps | 96.2% |
| Alliant Reloder-25 | <<locked>> | 90% | 31,009 psi | 49% | 2323 fps | 95.2% |
| Alliant Reloder-26 | 56.8 gr | 82% | 29,182 psi | 46% | 2320 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,547 psi | 82% | 2631 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 41,452 psi | 65% | 2543 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 45,440 psi | 71% | 2510 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 39,595 psi | 62% | 2507 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 40,176 psi | 63% | 2395 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 80% | 45,934 psi | 72% | 2523 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 41,075 psi | 64% | 2487 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 82% | 40,074 psi | 63% | 2425 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 48,530 psi | 76% | 2602 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 53,519 psi | 84% | 2621 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,793 psi | 51% | 2293 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,181 psi | 74% | 2562 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 38,856 psi | 61% | 2556 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 36,840 psi | 58% | 2431 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,209 psi | 43% | 1450 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,442 psi | 74% | 2520 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,705 psi | 78% | 2536 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,164 psi | 69% | 2454 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,482 psi | 68% | 2431 fps | 97.7% |
| IMR 4350 | <<locked>> | 80% | 35,955 psi | 56% | 2326 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,727 psi | 65% | 2425 fps | 97.2% |
| IMR 4831 | <<locked>> | 80% | 31,517 psi | 49% | 2264 fps | 97.1% |
| IMR 4895 | <<locked>> | 80% | 49,719 psi | 78% | 2592 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 48,356 psi | 76% | 2562 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 96% | 47,297 psi | 74% | 2644 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 80% | 52,953 psi | 83% | 2585 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,011 psi | 82% | 2543 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,558 psi | 75% | 2507 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,073 psi | 61% | 2375 fps | 97.9% |
| Lovex S070 | <<locked>> | 80% | 37,391 psi | 59% | 2359 fps | 96.4% |
| Lovex S071 | <<locked>> | 90% | 31,299 psi | 49% | 2267 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 51,605 psi | 81% | 2556 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,257 psi | 82% | 2556 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,834 psi | 75% | 2552 fps | 100% |
| Norma 204 | <<locked>> | 84% | 40,277 psi | 63% | 2454 fps | 95% |
| Norma MRP | <<locked>> | 88% | 36,187 psi | 57% | 2464 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 35,839 psi | 56% | 2375 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 80% | 47,790 psi | 75% | 2572 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 46,427 psi | 73% | 2641 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 34,809 psi | 55% | 2365 fps | 96.3% |
| Ramshot Magnum | <<locked>> | 94% | 40,132 psi | 63% | 2503 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,630 psi | 43% | 1483 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,861 psi | 72% | 2507 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,286 psi | 82% | 2677 fps | 100% |
| ReloadSwiss RS 60 | 54.1 gr | 80% | 42,235 psi | 66% | 2556 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,534 psi | 56% | 2395 fps | 98% |
| ReloadSwiss RS 70 | 54.9 gr | 80% | 34,693 psi | 54% | 2402 fps | 97.3% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 35,868 psi | 56% | 2480 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 49,240 psi | 77% | 2516 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,844 psi | 67% | 2464 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 44,164 psi | 69% | 2497 fps | 95% |
| Rottweil R 905 | <<locked>> | 90% | 41,147 psi | 64% | 2497 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 40,176 psi | 63% | 2395 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,073 psi | 61% | 2375 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,953 psi | 83% | 2585 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,558 psi | 75% | 2507 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,391 psi | 59% | 2359 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,976 psi | 69% | 2513 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,679 psi | 84% | 2615 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,401 psi | 81% | 2589 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,649 psi | 83% | 2497 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,440 psi | 70% | 2375 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,363 psi | 60% | 2326 fps | 96.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 40,756 psi | 64% | 2493 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 52,170 psi | 82% | 2493 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,461 psi | 84% | 2605 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,178 psi | 68% | 2461 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 48,283 psi | 76% | 2543 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 32,358 psi | 51% | 2339 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 36,593 psi | 57% | 2379 fps | 95.2% |
| Unknown powder | <<locked>> | 80% | 38,754 psi | 61% | 2428 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 80% | 49,806 psi | 78% | 2438 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,574 psi | 78% | 2484 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,095 psi | 77% | 2490 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,217 psi | 58% | 2326 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,696 psi | 61% | 2402 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 92% | 37,289 psi | 58% | 2385 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 48,530 psi | 76% | 2510 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,305 psi | 62% | 2444 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 28,224 psi | 44% | 2238 fps | 96.4% |
| Vihtavuori N560 | <<locked>> | 98% | 48,269 psi | 76% | 2684 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,419 psi | 57% | 2349 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 41,075 psi | 64% | 2487 fps | 97.3% |
| Winchester StaBALL HD | <<locked>> | 82% | 24,265 psi | 38% | 2192 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,351 psi | 66% | 2487 fps | 95.8% |
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 104 powders for .300 WSM loaded with the .308 | 200gr | Sierra MatchKing. Alliant Reloder-26 delivers the highest muzzle velocity at 2,844 fps; across all powders the maximum-charge window runs from 1,621 fps to 2,844 fps. Accurate 3100 gives the best case fill at 100 %, and 104 of the 104 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 1:12.0 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 60, ReloadSwiss RS 70, Alliant Reloder-26 rank at the top here: for .300 WSM with the .308 | 200gr | Sierra MatchKing 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.