Load Specifications
Bullet Manufacturer:Lapua
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:1:11.5
Load data in caliber .300 WSM with .308 | 200gr | Lapua Subsonic 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% | 56,797 psi | 89% | 2579 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,970 psi | 88% | 2615 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,532 psi | 81% | 2641 fps | 99.6% |
| Accurate 4064 | <<locked>> | 86% | 57,174 psi | 90% | 2631 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,128 psi | 85% | 2694 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 56,144 psi | 88% | 2661 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,276 psi | 90% | 2664 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,042 psi | 86% | 2733 fps | 98.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,605 psi | 82% | 2723 fps | 96.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,492 psi | 89% | 2785 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 54,636 psi | 86% | 2641 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,868 psi | 86% | 2661 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,882 psi | 86% | 2743 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,028 psi | 88% | 2766 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,725 psi | 90% | 2772 fps | 98.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,184 psi | 80% | 2720 fps | 98.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,356 psi | 76% | 2661 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,366 psi | 66% | 2595 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,579 psi | 87% | 2848 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,970 psi | 88% | 2680 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,992 psi | 74% | 2648 fps | 97.2% |
| Bofors RP3 | <<locked>> | 86% | 55,376 psi | 87% | 2657 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,184 psi | 80% | 2720 fps | 98.2% |
| Bofors RP7 | <<locked>> | 90% | 54,824 psi | 86% | 2644 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 86% | 55,796 psi | 87% | 2674 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 57,667 psi | 90% | 2759 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 92% | 54,607 psi | 86% | 2677 fps | 98.7% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,216 psi | 87% | 2710 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 82% | 56,811 psi | 89% | 2667 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,969 psi | 86% | 2667 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 57,305 psi | 90% | 2707 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 41,437 psi | 65% | 2618 fps | 96.3% |
| Hodgdon Superformance | <<locked>> | 92% | 56,420 psi | 88% | 2779 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,332 psi | 57% | 1624 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,971 psi | 89% | 2657 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,304 psi | 88% | 2625 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,086 psi | 88% | 2638 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 55,172 psi | 86% | 2621 fps | 99.4% |
| IMR 4350 | <<locked>> | 94% | 55,535 psi | 87% | 2674 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,550 psi | 89% | 2671 fps | 99.5% |
| IMR 4831 | <<locked>> | 98% | 55,390 psi | 87% | 2694 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,260 psi | 88% | 2684 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,607 psi | 86% | 2664 fps | 96.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,070 psi | 85% | 2762 fps | 97.4% |
| Lovex D073.6 | <<locked>> | 82% | 56,565 psi | 89% | 2631 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,158 psi | 86% | 2589 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,043 psi | 89% | 2641 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,521 psi | 89% | 2667 fps | 99.9% |
| Lovex S070 | <<locked>> | 94% | 57,696 psi | 90% | 2703 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,888 psi | 67% | 2507 fps | 98.5% |
| Norma 201 | <<locked>> | 82% | 55,027 psi | 86% | 2605 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,767 psi | 87% | 2602 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,667 psi | 90% | 2694 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,231 psi | 88% | 2726 fps | 98.5% |
| Norma MRPᴾ | <<locked>> | 100% | 54,331 psi | 85% | 2802 fps | 99.5% |
| Norma URP | <<locked>> | 94% | 56,376 psi | 88% | 2726 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,665 psi | 86% | 2674 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 53,635 psi | 84% | 2762 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 94% | 54,998 psi | 86% | 2726 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,285 psi | 79% | 2687 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,941 psi | 58% | 1660 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,666 psi | 87% | 2657 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,666 psi | 87% | 2723 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,738 psi | 87% | 2759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,406 psi | 90% | 2762 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,043 psi | 88% | 2792 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,060 psi | 64% | 2605 fps | 97.3% |
| Rottweil R 902 | <<locked>> | 84% | 55,738 psi | 87% | 2608 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,506 psi | 87% | 2651 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,695 psi | 89% | 2700 fps | 97.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,927 psi | 89% | 2756 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 90% | 54,824 psi | 86% | 2644 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,521 psi | 89% | 2667 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,565 psi | 89% | 2631 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,043 psi | 89% | 2641 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,682 psi | 90% | 2703 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,884 psi | 89% | 2707 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,566 psi | 90% | 2671 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,549 psi | 85% | 2635 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,028 psi | 88% | 2539 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,594 psi | 89% | 2539 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,231 psi | 88% | 2621 fps | 99.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,405 psi | 88% | 2753 fps | 98.9% |
| Somchem S335 | <<locked>> | 82% | 55,593 psi | 87% | 2536 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,000 psi | 89% | 2651 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,550 psi | 87% | 2648 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,056 psi | 86% | 2648 fps | 96.7% |
| Somchem S365 | <<locked>> | 96% | 55,376 psi | 87% | 2726 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,667 psi | 90% | 2733 fps | 99.4% |
| Unknown powder | <<locked>> | 92% | 57,174 psi | 90% | 2730 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 55,883 psi | 88% | 2516 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,999 psi | 88% | 2566 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,550 psi | 87% | 2575 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 56,811 psi | 89% | 2628 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,609 psi | 90% | 2700 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,037 psi | 75% | 2582 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 84% | 55,085 psi | 86% | 2602 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,201 psi | 85% | 2694 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,375 psi | 85% | 2733 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 51,547 psi | 81% | 2743 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,563 psi | 86% | 2641 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,667 psi | 90% | 2759 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,598 psi | 68% | 2717 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,289 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% | 50,067 psi | 78% | 2493 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,163 psi | 68% | 2411 fps | 96.9% |
| Accurate 3100 | <<locked>> | 86% | 32,155 psi | 50% | 2287 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 47,398 psi | 74% | 2500 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,853 psi | 56% | 2379 fps | 98.4% |
| ADI AR 2206H | <<locked>> | 80% | 52,721 psi | 83% | 2612 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,860 psi | 70% | 2477 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 39,929 psi | 63% | 2467 fps | 95% |
| ADI AR 2213 | <<locked>> | 96% | 46,093 psi | 72% | 2608 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,255 psi | 77% | 2677 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,295 psi | 71% | 2503 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,283 psi | 76% | 2562 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,259 psi | 55% | 2392 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,798 psi | 62% | 2507 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 39,523 psi | 62% | 2461 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 92% | 39,465 psi | 62% | 2507 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,773 psi | 40% | 2165 fps | 96.2% |
| Alliant Reloder-25 | <<locked>> | 90% | 31,067 psi | 49% | 2326 fps | 95.3% |
| Alliant Reloder-26 | 56.8 gr | 82% | 29,211 psi | 46% | 2320 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,620 psi | 82% | 2631 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 41,524 psi | 65% | 2546 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 45,484 psi | 71% | 2513 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 39,465 psi | 62% | 2507 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 40,248 psi | 63% | 2395 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 80% | 45,992 psi | 72% | 2523 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 41,147 psi | 64% | 2490 fps | 97.3% |
| Hodgdon H4350 | <<locked>> | 82% | 40,103 psi | 63% | 2428 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 96% | 48,327 psi | 76% | 2602 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 53,330 psi | 84% | 2618 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,837 psi | 51% | 2293 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,253 psi | 74% | 2566 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 38,928 psi | 61% | 2556 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 36,709 psi | 58% | 2428 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,224 psi | 43% | 1450 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,485 psi | 74% | 2520 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,748 psi | 78% | 2539 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,193 psi | 69% | 2457 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,526 psi | 68% | 2431 fps | 97.7% |
| IMR 4350 | <<locked>> | 80% | 35,998 psi | 56% | 2329 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,553 psi | 65% | 2421 fps | 97.2% |
| IMR 4831 | <<locked>> | 80% | 31,531 psi | 49% | 2267 fps | 97.1% |
| IMR 4895 | <<locked>> | 80% | 49,530 psi | 78% | 2589 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 48,167 psi | 75% | 2562 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 96% | 47,152 psi | 74% | 2644 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 80% | 53,040 psi | 83% | 2589 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,793 psi | 81% | 2539 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,369 psi | 74% | 2503 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,131 psi | 61% | 2379 fps | 97.9% |
| Lovex S070 | <<locked>> | 80% | 37,405 psi | 59% | 2359 fps | 96.4% |
| Lovex S071 | <<locked>> | 90% | 31,169 psi | 49% | 2264 fps | 95% |
| Norma 201 | <<locked>> | 80% | 51,692 psi | 81% | 2559 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,330 psi | 82% | 2556 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,659 psi | 75% | 2549 fps | 100% |
| Norma 204 | <<locked>> | 84% | 40,292 psi | 63% | 2457 fps | 95% |
| Norma MRP | <<locked>> | 88% | 36,230 psi | 57% | 2464 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 35,882 psi | 56% | 2379 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 80% | 47,863 psi | 75% | 2572 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 46,485 psi | 73% | 2641 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 34,679 psi | 54% | 2362 fps | 96.2% |
| Ramshot Magnum | <<locked>> | 94% | 40,234 psi | 63% | 2507 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,659 psi | 43% | 1483 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,934 psi | 72% | 2507 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,098 psi | 82% | 2674 fps | 100% |
| ReloadSwiss RS 60 | 54.1 gr | 80% | 42,308 psi | 66% | 2556 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,563 psi | 56% | 2398 fps | 98% |
| ReloadSwiss RS 70 | 54.9 gr | 80% | 34,751 psi | 54% | 2402 fps | 97.3% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 35,737 psi | 56% | 2477 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 49,313 psi | 77% | 2516 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,917 psi | 67% | 2464 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 44,237 psi | 69% | 2500 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 90% | 41,002 psi | 64% | 2497 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 40,248 psi | 63% | 2395 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,131 psi | 61% | 2379 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,040 psi | 83% | 2589 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,369 psi | 74% | 2503 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,391 psi | 59% | 2359 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,816 psi | 69% | 2513 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,737 psi | 84% | 2618 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,227 psi | 80% | 2585 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,460 psi | 82% | 2493 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,280 psi | 69% | 2375 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,203 psi | 60% | 2323 fps | 96.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 40,596 psi | 64% | 2490 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 52,243 psi | 82% | 2493 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,505 psi | 84% | 2605 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,236 psi | 68% | 2461 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 48,080 psi | 75% | 2543 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 32,401 psi | 51% | 2339 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 36,622 psi | 57% | 2379 fps | 95.2% |
| Unknown powder | <<locked>> | 80% | 38,609 psi | 61% | 2425 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 80% | 49,864 psi | 78% | 2438 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,371 psi | 77% | 2480 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,907 psi | 77% | 2487 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,043 psi | 58% | 2323 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,711 psi | 61% | 2402 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 94% | 39,639 psi | 62% | 2431 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 48,602 psi | 76% | 2510 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,349 psi | 62% | 2444 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 80% | 28,123 psi | 44% | 2234 fps | 96.4% |
| Vihtavuori N560 | <<locked>> | 98% | 48,283 psi | 76% | 2684 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,477 psi | 57% | 2349 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 41,147 psi | 64% | 2490 fps | 97.3% |
| Winchester StaBALL HD | <<locked>> | 82% | 24,178 psi | 38% | 2188 fps | 95.8% |
| Winchester Supreme 780 | <<locked>> | 90% | 42,148 psi | 66% | 2484 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 | Lapua Subsonic. Alliant Reloder-26 delivers the highest muzzle velocity at 2,848 fps; across all powders the maximum-charge window runs from 1,624 fps to 2,848 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 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-19 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 | Lapua Subsonic 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.