Load Specifications
Bullet:.308 | 200gr | Speer TBBC
Bullet Manufacturer:Speer
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:1:12.5
Load data in caliber .300 WSM with .308 | 200gr | Speer TBBC 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 70, Alliant Reloder-17 and ReloadSwiss RS 60.
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% | 56,304 psi | 88% | 2569 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,405 psi | 87% | 2598 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,894 psi | 80% | 2628 fps | 99.5% |
| Accurate 4064 | <<locked>> | 86% | 56,710 psi | 89% | 2621 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 57,232 psi | 90% | 2726 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 55,709 psi | 87% | 2648 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,855 psi | 89% | 2654 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,476 psi | 85% | 2717 fps | 98.3% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,083 psi | 82% | 2710 fps | 96.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,086 psi | 88% | 2772 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 54,331 psi | 85% | 2713 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 57,464 psi | 90% | 2674 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,389 psi | 85% | 2651 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,244 psi | 85% | 2730 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,317 psi | 87% | 2753 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,174 psi | 90% | 2759 fps | 98.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,676 psi | 79% | 2707 fps | 98% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,790 psi | 75% | 2648 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,872 psi | 66% | 2579 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,694 psi | 86% | 2831 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,608 psi | 87% | 2671 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,485 psi | 73% | 2635 fps | 97% |
| Bofors RP3 | <<locked>> | 86% | 54,926 psi | 86% | 2644 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,676 psi | 79% | 2707 fps | 98% |
| Bofors RP7 | <<locked>> | 90% | 54,462 psi | 85% | 2631 fps | 99% |
| Hodgdon H380 | <<locked>> | 86% | 55,419 psi | 87% | 2664 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 57,014 psi | 89% | 2746 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 94% | 57,537 psi | 90% | 2713 fps | 99% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 54,694 psi | 86% | 2697 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 82% | 56,362 psi | 88% | 2654 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,607 psi | 86% | 2657 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,855 psi | 89% | 2697 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,883 psi | 88% | 2766 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,303 psi | 57% | 1617 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 56,507 psi | 89% | 2644 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,753 psi | 87% | 2612 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,666 psi | 87% | 2628 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 54,810 psi | 86% | 2612 fps | 99.4% |
| IMR 4350 | <<locked>> | 94% | 54,940 psi | 86% | 2661 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,927 psi | 88% | 2654 fps | 99.4% |
| IMR 4831 | <<locked>> | 98% | 54,752 psi | 86% | 2680 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,796 psi | 87% | 2674 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 57,682 psi | 90% | 2703 fps | 97.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,316 psi | 84% | 2743 fps | 97.1% |
| Lovex D073.6 | <<locked>> | 82% | 56,086 psi | 88% | 2621 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,723 psi | 86% | 2575 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,565 psi | 89% | 2631 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,883 psi | 88% | 2651 fps | 99.9% |
| Lovex S070 | <<locked>> | 94% | 57,116 psi | 90% | 2690 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,322 psi | 66% | 2490 fps | 98.3% |
| Norma 201 | <<locked>> | 82% | 54,607 psi | 86% | 2595 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,288 psi | 87% | 2592 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,217 psi | 90% | 2684 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,637 psi | 87% | 2710 fps | 98.4% |
| Norma MRPᴾ | <<locked>> | 100% | 53,766 psi | 84% | 2785 fps | 99.4% |
| Norma URP | <<locked>> | 94% | 55,695 psi | 87% | 2710 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 54,273 psi | 85% | 2661 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 57,348 psi | 90% | 2812 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 94% | 54,404 psi | 85% | 2717 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,588 psi | 78% | 2671 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,927 psi | 58% | 1657 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,347 psi | 87% | 2648 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,187 psi | 86% | 2713 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,042 psi | 86% | 2746 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,782 psi | 89% | 2749 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,492 psi | 87% | 2779 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 40,698 psi | 64% | 2592 fps | 97% |
| Rottweil R 902 | <<locked>> | 84% | 55,274 psi | 87% | 2595 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,795 psi | 86% | 2638 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,130 psi | 88% | 2687 fps | 97.6% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,347 psi | 88% | 2743 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 90% | 54,462 psi | 85% | 2631 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,883 psi | 88% | 2651 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,086 psi | 88% | 2621 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,565 psi | 89% | 2631 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,116 psi | 90% | 2690 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,463 psi | 88% | 2697 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,884 psi | 89% | 2657 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,609 psi | 90% | 2671 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,521 psi | 87% | 2526 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,188 psi | 88% | 2530 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,680 psi | 87% | 2608 fps | 99.4% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,840 psi | 88% | 2740 fps | 98.7% |
| Somchem S335 | <<locked>> | 82% | 55,143 psi | 86% | 2526 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,608 psi | 89% | 2641 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,853 psi | 86% | 2635 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 54,273 psi | 85% | 2631 fps | 96.4% |
| Somchem S365 | <<locked>> | 96% | 54,665 psi | 86% | 2710 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,058 psi | 89% | 2720 fps | 99.3% |
| Unknown powder | <<locked>> | 92% | 56,536 psi | 89% | 2717 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 55,666 psi | 87% | 2510 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,535 psi | 87% | 2556 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,839 psi | 86% | 2562 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 56,449 psi | 88% | 2618 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,942 psi | 89% | 2687 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,529 psi | 74% | 2566 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 84% | 54,650 psi | 86% | 2589 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 57,421 psi | 90% | 2736 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,722 psi | 84% | 2720 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 51,039 psi | 80% | 2726 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 57,653 psi | 90% | 2674 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,014 psi | 89% | 2746 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,120 psi | 68% | 2700 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,419 psi | 87% | 2690 fps | 98.4% |
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% | 49,530 psi | 78% | 2480 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 42,844 psi | 67% | 2402 fps | 96.7% |
| Accurate 3100 | <<locked>> | 86% | 31,821 psi | 50% | 2274 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 46,905 psi | 74% | 2490 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,418 psi | 56% | 2365 fps | 98.2% |
| ADI AR 2206H | <<locked>> | 80% | 52,315 psi | 82% | 2598 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,440 psi | 70% | 2464 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 42,090 psi | 66% | 2503 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 96% | 45,614 psi | 71% | 2595 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,820 psi | 77% | 2664 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 42,105 psi | 66% | 2503 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,875 psi | 70% | 2490 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,834 psi | 75% | 2552 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,896 psi | 55% | 2379 fps | 98.3% |
| Alliant Reloder-17 | 53.5 gr | 80% | 39,189 psi | 61% | 2490 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 41,611 psi | 65% | 2497 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 41,568 psi | 65% | 2543 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,498 psi | 40% | 2152 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 92% | 32,663 psi | 51% | 2365 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 82% | 28,776 psi | 45% | 2303 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,982 psi | 81% | 2618 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 41,002 psi | 64% | 2530 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 45,034 psi | 71% | 2500 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 41,568 psi | 65% | 2543 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 39,871 psi | 62% | 2382 fps | 96.2% |
| Hodgdon H380 | <<locked>> | 80% | 45,585 psi | 71% | 2513 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 40,741 psi | 64% | 2477 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 82% | 39,769 psi | 62% | 2415 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 47,877 psi | 75% | 2585 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 52,866 psi | 83% | 2608 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,460 psi | 51% | 2280 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,775 psi | 73% | 2552 fps | 100% |
| Hodgdon Superformance | <<locked>> | 80% | 36,434 psi | 57% | 2415 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,137 psi | 43% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,065 psi | 74% | 2507 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 49,197 psi | 77% | 2526 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,758 psi | 69% | 2444 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,149 psi | 68% | 2418 fps | 97.6% |
| IMR 4350 | <<locked>> | 82% | 37,855 psi | 59% | 2362 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,191 psi | 65% | 2408 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 31,169 psi | 49% | 2254 fps | 96.9% |
| IMR 4895 | <<locked>> | 80% | 49,066 psi | 77% | 2575 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 47,674 psi | 75% | 2546 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 96% | 46,673 psi | 73% | 2628 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 80% | 52,576 psi | 82% | 2575 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,605 psi | 81% | 2533 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,137 psi | 74% | 2497 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,740 psi | 61% | 2365 fps | 97.8% |
| Lovex S070 | <<locked>> | 80% | 37,057 psi | 58% | 2349 fps | 96.2% |
| Lovex S071 | <<locked>> | 92% | 32,851 psi | 51% | 2300 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 51,198 psi | 80% | 2549 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,837 psi | 81% | 2546 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,195 psi | 74% | 2539 fps | 100% |
| Norma 204 | <<locked>> | 86% | 42,699 psi | 67% | 2500 fps | 95.7% |
| Norma MRP | <<locked>> | 88% | 35,766 psi | 56% | 2448 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 35,505 psi | 56% | 2365 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 47,485 psi | 74% | 2562 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 45,759 psi | 72% | 2621 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 34,345 psi | 54% | 2349 fps | 96% |
| Ramshot Magnum | <<locked>> | 94% | 39,610 psi | 62% | 2487 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,543 psi | 43% | 1476 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,571 psi | 71% | 2493 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,590 psi | 81% | 2661 fps | 100% |
| ReloadSwiss RS 60 | 53.5 gr | 80% | 41,669 psi | 65% | 2539 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,172 psi | 55% | 2385 fps | 97.8% |
| ReloadSwiss RS 70 | 54.4 gr | 80% | 34,432 psi | 54% | 2388 fps | 97.1% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 37,942 psi | 59% | 2526 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 48,849 psi | 77% | 2503 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,453 psi | 67% | 2451 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 46,615 psi | 73% | 2536 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 90% | 40,625 psi | 64% | 2484 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 39,871 psi | 62% | 2382 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,740 psi | 61% | 2365 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,576 psi | 82% | 2575 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,137 psi | 74% | 2497 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,057 psi | 58% | 2349 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,410 psi | 68% | 2500 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,374 psi | 84% | 2608 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,821 psi | 80% | 2575 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,243 psi | 82% | 2484 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,063 psi | 69% | 2365 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,043 psi | 60% | 2316 fps | 96.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 40,234 psi | 63% | 2477 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 51,808 psi | 81% | 2484 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,866 psi | 83% | 2592 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,786 psi | 67% | 2451 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 50,966 psi | 80% | 2582 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 31,995 psi | 50% | 2326 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 36,318 psi | 57% | 2369 fps | 95% |
| Unknown powder | <<locked>> | 80% | 38,189 psi | 60% | 2411 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 80% | 49,342 psi | 77% | 2428 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,110 psi | 77% | 2470 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,457 psi | 76% | 2477 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,840 psi | 58% | 2313 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,319 psi | 60% | 2388 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 94% | 39,146 psi | 61% | 2418 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 48,182 psi | 76% | 2500 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,957 psi | 61% | 2434 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 80% | 27,746 psi | 43% | 2221 fps | 96.1% |
| Vihtavuori N560 | <<locked>> | 98% | 47,805 psi | 75% | 2671 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,998 psi | 56% | 2336 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 40,741 psi | 64% | 2477 fps | 97.1% |
| Winchester StaBALL HD | <<locked>> | 82% | 23,946 psi | 38% | 2172 fps | 95.4% |
| Winchester Supreme 780 | <<locked>> | 90% | 41,698 psi | 65% | 2470 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 104 powders for .300 WSM loaded with the .308 | 200gr | Speer TBBC. Alliant Reloder-26 delivers the highest muzzle velocity at 2,831 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,831 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 1:12.5 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 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .300 WSM with the .308 | 200gr | Speer TBBC 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.