Load Specifications
Bullet Manufacturer:Sierra
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:1:13.0
Load data in caliber .300 WSM with .308 | 180gr | Sierra HP MatchKing bullet and 107 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-16.
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% | 57,435 psi | 90% | 2700 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 57,130 psi | 90% | 2733 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,753 psi | 89% | 2785 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,753 psi | 89% | 2785 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 56,391 psi | 88% | 2753 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,964 psi | 75% | 2723 fps | 98.6% |
| Accurate 4064 | <<locked>> | 88% | 57,334 psi | 90% | 2785 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 57,638 psi | 90% | 2887 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 56,739 psi | 89% | 2815 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,302 psi | 85% | 2766 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,201 psi | 87% | 2871 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,535 psi | 87% | 2762 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 57,029 psi | 89% | 2730 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,884 psi | 89% | 2943 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,824 psi | 86% | 2792 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,143 psi | 86% | 2812 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,839 psi | 86% | 2890 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,217 psi | 88% | 2920 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,331 psi | 85% | 2858 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 47,834 psi | 75% | 2795 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,976 psi | 70% | 2743 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,552 psi | 62% | 2654 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,184 psi | 80% | 2927 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,637 psi | 89% | 2835 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 55,637 psi | 87% | 2808 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 47,834 psi | 75% | 2795 fps | 96.4% |
| Bofors RP7 | <<locked>> | 92% | 55,332 psi | 87% | 2789 fps | 98.5% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,985 psi | 89% | 2740 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,245 psi | 87% | 2792 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,188 psi | 88% | 2825 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 54,157 psi | 85% | 2851 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 94% | 54,839 psi | 86% | 2818 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 84% | 57,334 psi | 90% | 2825 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,795 psi | 86% | 2812 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 57,493 psi | 90% | 2861 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,652 psi | 89% | 2923 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,998 psi | 56% | 1713 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 57,551 psi | 90% | 2812 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 56,362 psi | 88% | 2779 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 56,666 psi | 89% | 2792 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,550 psi | 87% | 2766 fps | 98.9% |
| IMR 4350 | <<locked>> | 96% | 55,869 psi | 88% | 2818 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,101 psi | 89% | 2815 fps | 99% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,158 psi | 86% | 2835 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 56,550 psi | 89% | 2841 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 54,897 psi | 86% | 2799 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 82% | 55,535 psi | 87% | 2762 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,058 psi | 89% | 2789 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,782 psi | 87% | 2740 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 57,479 psi | 90% | 2795 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,826 psi | 89% | 2812 fps | 99.7% |
| Lovex S070 | <<locked>> | 94% | 54,375 psi | 85% | 2795 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,784 psi | 62% | 2575 fps | 96.8% |
| Norma 201 | <<locked>> | 84% | 55,448 psi | 87% | 2759 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,115 psi | 88% | 2756 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,389 psi | 85% | 2799 fps | 100% |
| Norma 204 | <<locked>> | 96% | 56,623 psi | 89% | 2867 fps | 97.7% |
| Norma MRPᴾ | <<locked>> | 100% | 50,473 psi | 79% | 2877 fps | 98.3% |
| Norma URP | <<locked>> | 96% | 56,260 psi | 88% | 2871 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 55,013 psi | 86% | 2822 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,085 psi | 85% | 2900 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 96% | 55,100 psi | 86% | 2871 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,601 psi | 73% | 2749 fps | 96.5% |
| Ramshot TAC | <<locked>> | 82% | 55,550 psi | 87% | 2785 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,579 psi | 87% | 2802 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,753 psi | 58% | 1759 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,333 psi | 88% | 2808 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,999 psi | 88% | 2877 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,782 psi | 87% | 2913 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 57,261 psi | 90% | 2907 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,376 psi | 88% | 2940 fps | 100% |
| Rottweil R 901 | <<locked>> | 82% | 56,391 psi | 88% | 2736 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,101 psi | 88% | 2759 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,492 psi | 87% | 2802 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 56,971 psi | 89% | 2838 fps | 96.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,403 psi | 84% | 2844 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 92% | 55,332 psi | 87% | 2789 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,826 psi | 89% | 2812 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,058 psi | 89% | 2789 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 57,479 psi | 90% | 2795 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,375 psi | 85% | 2795 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 57,203 psi | 90% | 2861 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,273 psi | 85% | 2766 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,100 psi | 86% | 2785 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,550 psi | 89% | 2690 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,058 psi | 89% | 2690 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,652 psi | 89% | 2762 fps | 99% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,910 psi | 83% | 2838 fps | 97.4% |
| Somchem S335 | <<locked>> | 84% | 56,101 psi | 88% | 2690 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,653 psi | 90% | 2805 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,724 psi | 87% | 2799 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,013 psi | 86% | 2871 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,070 psi | 85% | 2822 fps | 98.3% |
| Unknown powder | <<locked>> | 94% | 57,203 psi | 90% | 2877 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 86% | 56,376 psi | 88% | 2671 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,043 psi | 88% | 2717 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,825 psi | 87% | 2726 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,942 psi | 89% | 2776 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 53,983 psi | 85% | 2795 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 44,788 psi | 70% | 2654 fps | 96% |
| Vihtavuori N540 | <<locked>> | 86% | 55,448 psi | 87% | 2753 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,389 psi | 85% | 2841 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,372 psi | 79% | 2822 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,810 psi | 86% | 2785 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,157 psi | 85% | 2851 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,480 psi | 63% | 2782 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,260 psi | 88% | 2841 fps | 97.7% |
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% | 54,172 psi | 85% | 2657 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,050 psi | 74% | 2595 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,040 psi | 83% | 2736 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,040 psi | 83% | 2736 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 40,915 psi | 64% | 2490 fps | 95.1% |
| Accurate 3100 | <<locked>> | 92% | 36,463 psi | 57% | 2503 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 44,527 psi | 70% | 2598 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,388 psi | 52% | 2448 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 80% | 50,169 psi | 79% | 2713 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,511 psi | 67% | 2569 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 45,556 psi | 71% | 2703 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,214 psi | 82% | 2713 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,388 psi | 84% | 2684 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,166 psi | 72% | 2766 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,685 psi | 67% | 2595 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,716 psi | 72% | 2657 fps | 99.6% |
| Alliant Reloder-16 | 51.4 gr | 80% | 33,156 psi | 52% | 2457 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,014 psi | 58% | 2579 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 44,817 psi | 70% | 2694 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 44,628 psi | 70% | 2736 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,311 psi | 43% | 2323 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,983 psi | 55% | 2543 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 88% | 33,359 psi | 52% | 2549 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,632 psi | 78% | 2726 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 42,598 psi | 67% | 2598 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 44,628 psi | 70% | 2736 fps | 95.5% |
| Bofors RP7 | <<locked>> | 82% | 40,509 psi | 63% | 2526 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,650 psi | 84% | 2694 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,619 psi | 81% | 2740 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,207 psi | 68% | 2608 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 80% | 38,464 psi | 60% | 2562 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 86% | 42,772 psi | 67% | 2605 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 50,676 psi | 79% | 2723 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,516 psi | 48% | 2359 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,193 psi | 69% | 2654 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 39,653 psi | 62% | 2615 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 42% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,817 psi | 70% | 2612 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 46,659 psi | 73% | 2641 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,698 psi | 65% | 2546 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,191 psi | 65% | 2513 fps | 96.1% |
| IMR 4350 | <<locked>> | 86% | 40,857 psi | 64% | 2556 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,349 psi | 62% | 2500 fps | 95.4% |
| IMR 4831 | <<locked>> | 82% | 31,270 psi | 49% | 2382 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 46,891 psi | 73% | 2687 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 98% | 51,561 psi | 81% | 2746 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 52,214 psi | 82% | 2713 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,980 psi | 78% | 2690 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,342 psi | 77% | 2641 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,788 psi | 70% | 2602 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,912 psi | 58% | 2454 fps | 96.2% |
| Lovex S070 | <<locked>> | 82% | 37,449 psi | 59% | 2484 fps | 95.1% |
| Lovex S071 | <<locked>> | 96% | 34,969 psi | 55% | 2470 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 48,979 psi | 77% | 2661 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,501 psi | 78% | 2661 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,092 psi | 71% | 2644 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 46,224 psi | 72% | 2697 fps | 95.5% |
| Norma MRP | <<locked>> | 92% | 38,479 psi | 60% | 2638 fps | 95% |
| Norma URP | <<locked>> | 80% | 33,475 psi | 52% | 2448 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 80% | 44,933 psi | 70% | 2664 fps | 99.7% |
| Ramshot Grand | <<locked>> | 98% | 50,227 psi | 79% | 2831 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 84% | 37,057 psi | 58% | 2539 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 98% | 43,337 psi | 68% | 2684 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 52,098 psi | 82% | 2733 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,040 psi | 82% | 2749 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,296 psi | 43% | 1568 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,453 psi | 68% | 2592 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,892 psi | 77% | 2769 fps | 99.9% |
| ReloadSwiss RS 60 | 55.3 gr | 80% | 39,378 psi | 62% | 2638 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,996 psi | 52% | 2461 fps | 96% |
| ReloadSwiss RS 70 | 57.6 gr | 82% | 34,867 psi | 55% | 2523 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 53,040 psi | 83% | 2687 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,746 psi | 73% | 2615 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,205 psi | 63% | 2549 fps | 99.6% |
| Rottweil R 904 | <<locked>> | 96% | 50,154 psi | 79% | 2733 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 94% | 43,584 psi | 68% | 2674 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 82% | 40,509 psi | 63% | 2526 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,912 psi | 58% | 2454 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,980 psi | 78% | 2690 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,788 psi | 70% | 2602 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 37,449 psi | 59% | 2484 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,205 psi | 65% | 2598 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,720 psi | 79% | 2710 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,530 psi | 76% | 2684 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,038 psi | 78% | 2602 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,018 psi | 66% | 2474 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,551 psi | 60% | 2451 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 43,163 psi | 68% | 2667 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 49,676 psi | 78% | 2602 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,502 psi | 79% | 2703 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,712 psi | 64% | 2549 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 30,095 psi | 47% | 2405 fps | 98.5% |
| Somchem S385 | <<locked>> | 92% | 41,510 psi | 65% | 2602 fps | 95.6% |
| Unknown powder | <<locked>> | 80% | 36,230 psi | 57% | 2503 fps | 96.7% |
| Vihtavuori N133 | <<locked>> | 80% | 47,340 psi | 74% | 2546 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,630 psi | 73% | 2585 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,238 psi | 72% | 2589 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,925 psi | 55% | 2405 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 36,289 psi | 57% | 2477 fps | 97.3% |
| Vihtavuori N165 | <<locked>> | 98% | 42,003 psi | 66% | 2602 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 45,847 psi | 72% | 2612 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,738 psi | 58% | 2520 fps | 97.3% |
| Vihtavuori N555 | <<locked>> | 84% | 29,617 psi | 46% | 2395 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,272 psi | 54% | 2421 fps | 98.7% |
| Winchester 760 | <<locked>> | 80% | 38,464 psi | 60% | 2562 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,325 psi | 43% | 2405 fps | 96.3% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,542 psi | 71% | 2671 fps | 95.4% |
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 118 powders for .300 WSM loaded with the .308 | 180gr | Sierra HP MatchKing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,943 fps; across all powders the maximum-charge window runs from 1,713 fps to 2,943 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 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 1:13.0 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. ReloadSwiss RS 60, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for .300 WSM with the .308 | 180gr | Sierra HP MatchKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Hodgdon H4831 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.