Load Specifications
Bullet Manufacturer:Sellier & Bellot
Bullet Weight:180 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 | 180gr | Sellier & Bellot FMJ-BT bullet and 105 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and ReloadSwiss RS 70.
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 2015 | <<locked>> | 82% | 57,116 psi | 90% | 2694 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,608 psi | 89% | 2723 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,275 psi | 88% | 2776 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 56,014 psi | 88% | 2743 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,326 psi | 74% | 2710 fps | 98.4% |
| Accurate 4064 | <<locked>> | 88% | 56,797 psi | 89% | 2776 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 57,188 psi | 90% | 2877 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 56,231 psi | 88% | 2805 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 57,319 psi | 90% | 2808 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,578 psi | 86% | 2858 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,042 psi | 86% | 2753 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,695 psi | 89% | 2723 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,376 psi | 88% | 2930 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,346 psi | 85% | 2782 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,665 psi | 86% | 2802 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,186 psi | 85% | 2877 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,492 psi | 87% | 2907 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,737 psi | 84% | 2844 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 47,282 psi | 74% | 2782 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,672 psi | 70% | 2736 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,059 psi | 61% | 2641 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,546 psi | 79% | 2913 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,159 psi | 88% | 2825 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 55,172 psi | 86% | 2799 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 47,282 psi | 74% | 2782 fps | 96.1% |
| Bofors RP7 | <<locked>> | 92% | 54,665 psi | 86% | 2772 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,492 psi | 89% | 2733 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,781 psi | 86% | 2782 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,767 psi | 87% | 2812 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 57,305 psi | 90% | 2894 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 96% | 57,667 psi | 90% | 2858 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 84% | 56,869 psi | 89% | 2815 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,375 psi | 85% | 2802 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 57,029 psi | 89% | 2854 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,057 psi | 88% | 2910 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,940 psi | 56% | 1709 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 57,072 psi | 89% | 2802 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 56,028 psi | 88% | 2772 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 56,173 psi | 88% | 2782 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,390 psi | 87% | 2759 fps | 98.8% |
| IMR 4350 | <<locked>> | 96% | 55,216 psi | 87% | 2805 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,420 psi | 88% | 2802 fps | 98.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,476 psi | 85% | 2822 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 56,086 psi | 88% | 2831 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,042 psi | 86% | 2753 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,550 psi | 89% | 2779 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,347 psi | 87% | 2730 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,985 psi | 89% | 2785 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,173 psi | 88% | 2799 fps | 99.6% |
| Lovex S070 | <<locked>> | 96% | 57,435 psi | 90% | 2838 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,204 psi | 61% | 2559 fps | 96.6% |
| Norma 201 | <<locked>> | 84% | 54,984 psi | 86% | 2749 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,608 psi | 87% | 2746 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,406 psi | 90% | 2838 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,985 psi | 88% | 2854 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 49,908 psi | 78% | 2864 fps | 98.1% |
| Norma URP | <<locked>> | 96% | 55,811 psi | 87% | 2861 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 54,578 psi | 86% | 2815 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,505 psi | 84% | 2884 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 96% | 54,462 psi | 85% | 2861 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,180 psi | 72% | 2736 fps | 96.3% |
| Ramshot TAC | <<locked>> | 82% | 55,158 psi | 86% | 2776 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,129 psi | 86% | 2792 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,695 psi | 57% | 1752 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,898 psi | 88% | 2799 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,463 psi | 87% | 2867 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,056 psi | 86% | 2900 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,855 psi | 89% | 2897 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,767 psi | 87% | 2930 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 55,854 psi | 88% | 2723 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,593 psi | 87% | 2749 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,027 psi | 86% | 2792 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 56,608 psi | 89% | 2831 fps | 96.6% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,721 psi | 83% | 2831 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 92% | 54,665 psi | 86% | 2772 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,173 psi | 88% | 2799 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,550 psi | 89% | 2779 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,985 psi | 89% | 2785 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 57,435 psi | 90% | 2838 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,811 psi | 89% | 2851 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,595 psi | 90% | 2812 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,650 psi | 86% | 2776 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,043 psi | 88% | 2680 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,855 psi | 89% | 2684 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,333 psi | 88% | 2756 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,228 psi | 82% | 2825 fps | 97.2% |
| Somchem S335 | <<locked>> | 84% | 55,637 psi | 87% | 2680 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,246 psi | 90% | 2799 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,230 psi | 87% | 2789 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 54,244 psi | 85% | 2861 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,432 psi | 84% | 2808 fps | 98.2% |
| Unknown powder | <<locked>> | 94% | 56,753 psi | 89% | 2867 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 86% | 56,144 psi | 88% | 2664 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,811 psi | 87% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,332 psi | 87% | 2717 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,521 psi | 89% | 2769 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,116 psi | 90% | 2838 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 44,469 psi | 70% | 2644 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 86% | 54,984 psi | 86% | 2743 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,537 psi | 90% | 2884 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,676 psi | 78% | 2808 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,244 psi | 85% | 2776 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,305 psi | 90% | 2894 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,030 psi | 63% | 2769 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,680 psi | 87% | 2828 fps | 97.5% |
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 2015 | <<locked>> | 80% | 53,621 psi | 84% | 2648 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,746 psi | 73% | 2589 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,750 psi | 83% | 2726 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 43,149 psi | 68% | 2533 fps | 95.7% |
| Accurate 3100 | <<locked>> | 92% | 36,085 psi | 57% | 2493 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 44,222 psi | 69% | 2589 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,924 psi | 52% | 2434 fps | 96.3% |
| ADI AR 2206H | <<locked>> | 80% | 49,661 psi | 78% | 2703 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,264 psi | 66% | 2562 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 45,020 psi | 71% | 2687 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,735 psi | 81% | 2703 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,011 psi | 83% | 2674 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,701 psi | 72% | 2753 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,409 psi | 66% | 2585 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,252 psi | 71% | 2648 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,793 psi | 51% | 2444 fps | 96.4% |
| Alliant Reloder-17 | 54.9 gr | 80% | 36,825 psi | 58% | 2572 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 44,469 psi | 70% | 2684 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 44,367 psi | 70% | 2726 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,021 psi | 42% | 2310 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,519 psi | 54% | 2526 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,083 psi | 52% | 2539 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,182 psi | 77% | 2717 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 42,322 psi | 66% | 2592 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 44,367 psi | 70% | 2726 fps | 95.3% |
| Bofors RP7 | <<locked>> | 82% | 40,089 psi | 63% | 2513 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,142 psi | 83% | 2684 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,198 psi | 80% | 2730 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,757 psi | 67% | 2595 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 80% | 38,058 psi | 60% | 2549 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 88% | 45,136 psi | 71% | 2648 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 50,154 psi | 79% | 2713 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,327 psi | 48% | 2349 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,743 psi | 69% | 2644 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 42,119 psi | 66% | 2664 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 42% | 1526 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,556 psi | 70% | 2605 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 46,354 psi | 73% | 2635 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,452 psi | 65% | 2536 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,988 psi | 64% | 2503 fps | 95.9% |
| IMR 4350 | <<locked>> | 86% | 40,466 psi | 63% | 2543 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,131 psi | 61% | 2493 fps | 95.2% |
| IMR 4831 | <<locked>> | 82% | 30,879 psi | 48% | 2369 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 46,383 psi | 73% | 2674 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 80% | 51,735 psi | 81% | 2703 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,501 psi | 78% | 2680 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,139 psi | 77% | 2635 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,498 psi | 70% | 2595 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,695 psi | 57% | 2448 fps | 96.1% |
| Lovex S070 | <<locked>> | 84% | 39,465 psi | 62% | 2526 fps | 95.8% |
| Lovex S071 | <<locked>> | 96% | 34,606 psi | 54% | 2461 fps | 95% |
| Norma 201 | <<locked>> | 80% | 48,704 psi | 76% | 2654 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,240 psi | 77% | 2654 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,599 psi | 70% | 2635 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 45,861 psi | 72% | 2687 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 40,698 psi | 64% | 2684 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 33,040 psi | 52% | 2434 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 80% | 44,483 psi | 70% | 2654 fps | 99.7% |
| Ramshot Grand | <<locked>> | 98% | 49,705 psi | 78% | 2818 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 84% | 36,709 psi | 58% | 2530 fps | 95.6% |
| Ramshot Magnum | <<locked>> | 98% | 42,844 psi | 67% | 2671 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 51,692 psi | 81% | 2723 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,590 psi | 81% | 2740 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,383 psi | 43% | 1565 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,033 psi | 67% | 2579 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,356 psi | 76% | 2756 fps | 99.8% |
| ReloadSwiss RS 60 | 54.9 gr | 80% | 39,175 psi | 61% | 2631 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,590 psi | 51% | 2451 fps | 95.8% |
| ReloadSwiss RS 70 | 57.1 gr | 82% | 34,548 psi | 54% | 2510 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 52,765 psi | 83% | 2680 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,238 psi | 72% | 2605 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,726 psi | 62% | 2536 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 49,792 psi | 78% | 2723 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 94% | 43,192 psi | 68% | 2661 fps | 95% |
| Rottweil R 907 | <<locked>> | 82% | 40,089 psi | 63% | 2513 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,695 psi | 57% | 2448 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,501 psi | 78% | 2680 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,498 psi | 70% | 2595 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 39,465 psi | 62% | 2526 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,741 psi | 64% | 2589 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,270 psi | 79% | 2700 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,109 psi | 75% | 2674 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,763 psi | 78% | 2595 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,785 psi | 65% | 2467 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,174 psi | 60% | 2441 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,716 psi | 72% | 2713 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 49,429 psi | 77% | 2595 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,067 psi | 78% | 2694 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,451 psi | 63% | 2543 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 29,689 psi | 47% | 2392 fps | 98.4% |
| Somchem S385 | <<locked>> | 92% | 41,162 psi | 65% | 2592 fps | 95.4% |
| Unknown powder | <<locked>> | 80% | 35,839 psi | 56% | 2490 fps | 96.5% |
| Vihtavuori N133 | <<locked>> | 80% | 47,036 psi | 74% | 2536 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,340 psi | 73% | 2579 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,992 psi | 72% | 2582 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,679 psi | 54% | 2398 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 35,897 psi | 56% | 2467 fps | 97.1% |
| Vihtavuori N165 | <<locked>> | 98% | 41,727 psi | 65% | 2592 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 45,614 psi | 71% | 2602 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,332 psi | 57% | 2507 fps | 97.1% |
| Vihtavuori N555 | <<locked>> | 84% | 29,399 psi | 46% | 2388 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,968 psi | 53% | 2415 fps | 98.6% |
| Winchester 760 | <<locked>> | 80% | 38,058 psi | 60% | 2549 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,079 psi | 42% | 2388 fps | 96% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,034 psi | 71% | 2657 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 117 powders for .300 WSM loaded with the .308 | 180gr | Sellier & Bellot FMJ-BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,930 fps; across all powders the maximum-charge window runs from 1,709 fps to 2,930 fps. Accurate 3100 gives the best case fill at 100 %, and 117 of the 117 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2209 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-17, ReloadSwiss RS 60, ReloadSwiss RS 70 rank at the top here: for .300 WSM with the .308 | 180gr | Sellier & Bellot FMJ-BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.