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:1:16.0
Load data in caliber .300 WSM with .308 | 180gr | Sierra Pro-Hunter 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, Hodgdon Superformance and Alliant Reloder-17.
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% | 55,753 psi | 87% | 2723 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,882 psi | 86% | 2749 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,357 psi | 79% | 2772 fps | 99.1% |
| Accurate 4064 | <<locked>> | 86% | 55,941 psi | 88% | 2779 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,507 psi | 89% | 2881 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 55,288 psi | 87% | 2805 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,260 psi | 88% | 2808 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 53,983 psi | 85% | 2864 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,479 psi | 90% | 2802 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,405 psi | 87% | 2930 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,956 psi | 89% | 2831 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,276 psi | 90% | 2854 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 57,276 psi | 90% | 2936 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,882 psi | 86% | 2910 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,579 psi | 89% | 2907 fps | 98.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,241 psi | 79% | 2851 fps | 97.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,224 psi | 74% | 2792 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,481 psi | 65% | 2710 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,215 psi | 85% | 2986 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,158 psi | 86% | 2825 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 46,093 psi | 72% | 2776 fps | 96.1% |
| Bofors RP3 | <<locked>> | 86% | 54,360 psi | 85% | 2799 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,241 psi | 79% | 2851 fps | 97.2% |
| Bofors RP7 | <<locked>> | 92% | 57,363 psi | 90% | 2835 fps | 98.9% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,290 psi | 90% | 2831 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 54,737 psi | 86% | 2815 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 56,507 psi | 89% | 2900 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 94% | 56,855 psi | 89% | 2864 fps | 98.4% |
| Hodgdon H4895 | <<locked>> | 82% | 55,869 psi | 88% | 2815 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 57,551 psi | 90% | 2858 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,173 psi | 88% | 2854 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,274 psi | 87% | 2917 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,172 psi | 57% | 1732 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,970 psi | 88% | 2802 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 55,158 psi | 86% | 2772 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 55,100 psi | 86% | 2782 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,421 psi | 90% | 2808 fps | 99.2% |
| IMR 4350 | <<locked>> | 94% | 54,665 psi | 86% | 2815 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,448 psi | 87% | 2808 fps | 99% |
| IMR 4831ᴾ | <<locked>> | 100% | 57,537 psi | 90% | 2881 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,114 psi | 86% | 2828 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 57,232 psi | 90% | 2851 fps | 96.6% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 52,997 psi | 83% | 2890 fps | 96.2% |
| IMR 8208 XBR | <<locked>> | 82% | 57,479 psi | 90% | 2802 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,521 psi | 87% | 2779 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,624 psi | 90% | 2779 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,927 psi | 88% | 2785 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,492 psi | 87% | 2805 fps | 99.7% |
| Lovex S070 | <<locked>> | 94% | 56,594 psi | 89% | 2844 fps | 99.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,872 psi | 66% | 2625 fps | 97.6% |
| Norma 201 | <<locked>> | 84% | 57,435 psi | 90% | 2799 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,752 psi | 86% | 2749 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,521 psi | 89% | 2841 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,201 psi | 87% | 2861 fps | 97.7% |
| Norma MRPᴾ | <<locked>> | 100% | 53,171 psi | 83% | 2936 fps | 98.9% |
| Norma URP | <<locked>> | 94% | 55,187 psi | 86% | 2867 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 57,508 psi | 90% | 2867 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,565 psi | 89% | 2956 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 96% | 57,522 psi | 90% | 2920 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,037 psi | 77% | 2808 fps | 97.5% |
| Ramshot TAC | <<locked>> | 82% | 57,595 psi | 90% | 2831 fps | 99.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,551 psi | 90% | 2841 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,912 psi | 58% | 1775 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 54,766 psi | 86% | 2799 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,549 psi | 85% | 2871 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 54,302 psi | 85% | 2900 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,304 psi | 88% | 2904 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,868 psi | 86% | 2933 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 54,694 psi | 86% | 2749 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,230 psi | 85% | 2792 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 55,753 psi | 87% | 2838 fps | 96.9% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,840 psi | 88% | 2894 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 92% | 57,363 psi | 90% | 2835 fps | 98.9% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,492 psi | 87% | 2805 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,521 psi | 87% | 2779 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,927 psi | 88% | 2785 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 56,594 psi | 89% | 2844 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,956 psi | 88% | 2854 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,492 psi | 89% | 2812 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,087 psi | 89% | 2828 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,868 psi | 86% | 2680 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,608 psi | 87% | 2684 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,347 psi | 87% | 2759 fps | 99% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,347 psi | 87% | 2887 fps | 98.1% |
| Somchem S335 | <<locked>> | 82% | 54,462 psi | 85% | 2680 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,188 psi | 88% | 2799 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,404 psi | 85% | 2792 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 57,609 psi | 90% | 2831 fps | 96.4% |
| Somchem S365 | <<locked>> | 96% | 54,027 psi | 85% | 2867 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 56,637 psi | 89% | 2871 fps | 98.9% |
| Unknown powder | <<locked>> | 92% | 55,854 psi | 88% | 2871 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 84% | 55,071 psi | 86% | 2664 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,795 psi | 86% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,375 psi | 85% | 2720 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,927 psi | 88% | 2772 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,347 psi | 88% | 2841 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,094 psi | 74% | 2707 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 86% | 57,696 psi | 90% | 2792 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,739 psi | 89% | 2887 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,011 psi | 83% | 2871 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 57,203 psi | 90% | 2828 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,507 psi | 89% | 2900 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,728 psi | 67% | 2841 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,998 psi | 86% | 2838 fps | 97.8% |
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% | 48,994 psi | 77% | 2631 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 42,322 psi | 66% | 2533 fps | 95.8% |
| Accurate 3100 | <<locked>> | 90% | 35,940 psi | 56% | 2503 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 46,412 psi | 73% | 2638 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,969 psi | 55% | 2493 fps | 97.3% |
| ADI AR 2206H | <<locked>> | 80% | 51,837 psi | 81% | 2756 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,121 psi | 69% | 2608 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 44,440 psi | 70% | 2694 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,940 psi | 85% | 2753 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,211 psi | 76% | 2815 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,324 psi | 69% | 2635 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,413 psi | 74% | 2700 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,505 psi | 54% | 2503 fps | 97.4% |
| Alliant Reloder-17 | 57.6 gr | 80% | 38,812 psi | 61% | 2631 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,859 psi | 69% | 2684 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 43,961 psi | 69% | 2736 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,731 psi | 42% | 2313 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,389 psi | 54% | 2539 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 86% | 32,663 psi | 51% | 2539 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,561 psi | 81% | 2769 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 43,120 psi | 68% | 2717 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 44,498 psi | 70% | 2644 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 43,961 psi | 69% | 2736 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 39,436 psi | 62% | 2513 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,751 psi | 84% | 2782 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,962 psi | 70% | 2651 fps | 99% |
| Hodgdon H414 | <<locked>> | 80% | 40,263 psi | 63% | 2612 fps | 96.2% |
| Hodgdon H4350 | <<locked>> | 84% | 41,785 psi | 65% | 2598 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 52,402 psi | 82% | 2762 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,952 psi | 50% | 2402 fps | 98% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,122 psi | 72% | 2700 fps | 100% |
| Hodgdon Superformance | 62.4 gr | 82% | 38,638 psi | 61% | 2605 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,050 psi | 42% | 1549 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,485 psi | 73% | 2654 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 48,559 psi | 76% | 2677 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,395 psi | 68% | 2589 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,714 psi | 67% | 2556 fps | 96.8% |
| IMR 4350 | <<locked>> | 84% | 39,842 psi | 62% | 2546 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,741 psi | 64% | 2543 fps | 96.1% |
| IMR 4831 | <<locked>> | 80% | 30,705 psi | 48% | 2372 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 48,617 psi | 76% | 2726 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 50,328 psi | 79% | 2743 fps | 95% |
| IMR 7828 SSC | <<locked>> | 98% | 49,487 psi | 78% | 2828 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 53,940 psi | 85% | 2753 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 52,025 psi | 82% | 2730 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,995 psi | 80% | 2684 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,514 psi | 73% | 2641 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,363 psi | 60% | 2497 fps | 96.9% |
| Lovex S070 | <<locked>> | 80% | 36,564 psi | 57% | 2474 fps | 95.1% |
| Lovex S071 | <<locked>> | 94% | 34,534 psi | 54% | 2467 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 50,705 psi | 79% | 2700 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,300 psi | 80% | 2700 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,760 psi | 73% | 2687 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 45,194 psi | 71% | 2690 fps | 95.5% |
| Norma MRP | <<locked>> | 90% | 37,695 psi | 59% | 2631 fps | 95% |
| Norma URP | <<locked>> | 80% | 34,983 psi | 55% | 2490 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 80% | 46,905 psi | 74% | 2707 fps | 99.9% |
| Ramshot Grand | <<locked>> | 96% | 48,863 psi | 77% | 2825 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 82% | 36,245 psi | 57% | 2533 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 96% | 42,148 psi | 66% | 2677 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 53,925 psi | 85% | 2776 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 54,041 psi | 85% | 2792 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,586 psi | 43% | 1588 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,049 psi | 71% | 2635 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,010 psi | 80% | 2815 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,278 psi | 65% | 2684 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,621 psi | 54% | 2507 fps | 96.8% |
| ReloadSwiss RS 70 | 58.5 gr | 80% | 34,011 psi | 53% | 2510 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 48,254 psi | 76% | 2654 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,887 psi | 66% | 2589 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 49,124 psi | 77% | 2730 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 92% | 42,946 psi | 67% | 2671 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 39,436 psi | 62% | 2513 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,363 psi | 60% | 2497 fps | 96.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,025 psi | 82% | 2730 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,514 psi | 73% | 2641 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 36,564 psi | 57% | 2474 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,946 psi | 67% | 2641 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,707 psi | 83% | 2756 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,299 psi | 79% | 2726 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,590 psi | 81% | 2635 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,497 psi | 68% | 2510 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,492 psi | 59% | 2441 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 42,540 psi | 67% | 2667 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 51,372 psi | 81% | 2635 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,460 psi | 82% | 2746 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,322 psi | 66% | 2592 fps | 99.8% |
| Somchem S361 | <<locked>> | 96% | 54,056 psi | 85% | 2779 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 31,473 psi | 49% | 2448 fps | 99.1% |
| Somchem S385 | <<locked>> | 90% | 40,756 psi | 64% | 2598 fps | 95.6% |
| Unknown powder | <<locked>> | 80% | 37,753 psi | 59% | 2546 fps | 97.4% |
| Vihtavuori N133 | <<locked>> | 80% | 48,776 psi | 76% | 2579 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,370 psi | 76% | 2621 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,979 psi | 75% | 2625 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,303 psi | 57% | 2444 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 37,753 psi | 59% | 2520 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 96% | 41,394 psi | 65% | 2602 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 47,674 psi | 75% | 2648 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,392 psi | 60% | 2562 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 82% | 29,298 psi | 46% | 2392 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,679 psi | 56% | 2467 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 40,263 psi | 63% | 2612 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,832 psi | 42% | 2398 fps | 96.4% |
| Winchester Supreme 780 | <<locked>> | 92% | 44,411 psi | 70% | 2661 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 104 powders for .300 WSM loaded with the .308 | 180gr | Sierra Pro-Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 2,986 fps; across all powders the maximum-charge window runs from 1,732 fps to 2,986 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 180.0 gr projectile in 0.308" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-19, 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 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 WSM with the .308 | 180gr | Sierra Pro-Hunter 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.