Load Specifications
Bullet Manufacturer:Alaska Bullet Works
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 | Alaska Bullet Works Kodiak SP SPBC bullet and 105 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 2015 | <<locked>> | 82% | 57,174 psi | 90% | 2694 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,608 psi | 89% | 2723 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 56,304 psi | 88% | 2776 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 56,086 psi | 88% | 2743 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,369 psi | 74% | 2710 fps | 98.4% |
| Accurate 4064 | <<locked>> | 88% | 56,797 psi | 89% | 2776 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,913 psi | 89% | 2871 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 56,275 psi | 88% | 2805 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 57,305 psi | 90% | 2805 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,650 psi | 86% | 2858 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,085 psi | 86% | 2753 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,753 psi | 89% | 2723 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,434 psi | 88% | 2930 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,404 psi | 85% | 2782 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,708 psi | 86% | 2802 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,172 psi | 85% | 2877 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,521 psi | 87% | 2907 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,766 psi | 84% | 2844 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 47,311 psi | 74% | 2782 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,483 psi | 70% | 2733 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,117 psi | 61% | 2641 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,589 psi | 79% | 2913 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,231 psi | 88% | 2825 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 54,926 psi | 86% | 2795 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 47,311 psi | 74% | 2782 fps | 96.1% |
| Bofors RP7 | <<locked>> | 92% | 54,694 psi | 86% | 2776 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,536 psi | 89% | 2730 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,766 psi | 86% | 2782 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,753 psi | 87% | 2815 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 57,348 psi | 90% | 2894 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 96% | 57,725 psi | 90% | 2858 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 84% | 56,869 psi | 89% | 2812 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,375 psi | 85% | 2802 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 57,058 psi | 89% | 2851 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,057 psi | 88% | 2910 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,955 psi | 56% | 1709 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 56,840 psi | 89% | 2799 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,782 psi | 87% | 2769 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 56,231 psi | 88% | 2782 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,187 psi | 86% | 2756 fps | 98.8% |
| IMR 4350 | <<locked>> | 96% | 55,288 psi | 87% | 2805 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,463 psi | 88% | 2802 fps | 98.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,505 psi | 85% | 2825 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 56,115 psi | 88% | 2828 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,085 psi | 86% | 2753 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,550 psi | 89% | 2779 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,332 psi | 87% | 2730 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,971 psi | 89% | 2785 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,202 psi | 88% | 2799 fps | 99.6% |
| Lovex S070 | <<locked>> | 96% | 57,464 psi | 90% | 2838 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,276 psi | 62% | 2562 fps | 96.6% |
| Norma 201 | <<locked>> | 84% | 54,969 psi | 86% | 2746 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,622 psi | 87% | 2746 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,435 psi | 90% | 2838 fps | 100% |
| Norma 204 | <<locked>> | 96% | 56,014 psi | 88% | 2854 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 49,937 psi | 78% | 2864 fps | 98.1% |
| Norma URP | <<locked>> | 96% | 55,854 psi | 88% | 2861 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 54,636 psi | 86% | 2815 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,272 psi | 83% | 2877 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 96% | 54,491 psi | 85% | 2858 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,195 psi | 72% | 2736 fps | 96.3% |
| Ramshot TAC | <<locked>> | 82% | 55,201 psi | 87% | 2776 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,187 psi | 86% | 2792 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,709 psi | 58% | 1752 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,680 psi | 87% | 2792 fps | 99.2% |
| 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% | 56,927 psi | 89% | 2900 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,550 psi | 87% | 2923 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 55,912 psi | 88% | 2726 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,622 psi | 87% | 2749 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,085 psi | 86% | 2789 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 56,376 psi | 88% | 2825 fps | 96.6% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,794 psi | 83% | 2831 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 92% | 54,694 psi | 86% | 2776 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,202 psi | 88% | 2799 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,550 psi | 89% | 2779 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,971 psi | 89% | 2785 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 57,464 psi | 90% | 2838 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,521 psi | 89% | 2848 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,653 psi | 90% | 2812 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,708 psi | 86% | 2776 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,115 psi | 88% | 2680 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,637 psi | 89% | 2680 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,376 psi | 88% | 2753 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,301 psi | 82% | 2825 fps | 97.2% |
| Somchem S335 | <<locked>> | 84% | 55,637 psi | 87% | 2680 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,276 psi | 90% | 2799 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,027 psi | 86% | 2785 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 54,288 psi | 85% | 2861 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,505 psi | 84% | 2808 fps | 98.2% |
| Unknown powder | <<locked>> | 94% | 56,521 psi | 89% | 2864 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 86% | 55,912 psi | 88% | 2661 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,811 psi | 87% | 2710 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,376 psi | 87% | 2717 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,521 psi | 89% | 2766 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,188 psi | 90% | 2838 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 44,527 psi | 70% | 2644 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 86% | 55,042 psi | 86% | 2743 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,537 psi | 90% | 2884 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,705 psi | 78% | 2808 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,244 psi | 85% | 2776 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,348 psi | 90% | 2894 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,030 psi | 63% | 2769 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,724 psi | 87% | 2831 fps | 97.6% |
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 2015 | <<locked>> | 80% | 53,650 psi | 84% | 2648 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,746 psi | 73% | 2589 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,562 psi | 82% | 2723 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 43,134 psi | 68% | 2530 fps | 95.7% |
| Accurate 3100 | <<locked>> | 92% | 35,940 psi | 56% | 2490 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 44,251 psi | 69% | 2592 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,967 psi | 52% | 2434 fps | 96.3% |
| ADI AR 2206H | <<locked>> | 80% | 49,676 psi | 78% | 2703 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,308 psi | 66% | 2559 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 45,020 psi | 71% | 2687 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,779 psi | 81% | 2703 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,069 psi | 83% | 2677 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,759 psi | 72% | 2756 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,206 psi | 66% | 2579 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,295 psi | 71% | 2648 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,779 psi | 51% | 2444 fps | 96.4% |
| Alliant Reloder-17 | 54.8 gr | 80% | 36,651 psi | 57% | 2566 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 44,295 psi | 69% | 2677 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 44,353 psi | 70% | 2726 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,006 psi | 42% | 2310 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,548 psi | 54% | 2526 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,924 psi | 52% | 2533 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,240 psi | 77% | 2717 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 42,380 psi | 66% | 2592 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 44,353 psi | 70% | 2726 fps | 95.3% |
| Bofors RP7 | <<locked>> | 82% | 40,132 psi | 63% | 2513 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,185 psi | 83% | 2684 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,184 psi | 80% | 2730 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,786 psi | 67% | 2595 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 80% | 38,101 psi | 60% | 2549 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 88% | 45,136 psi | 71% | 2648 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 50,198 psi | 79% | 2713 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,327 psi | 48% | 2349 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,787 psi | 69% | 2644 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 42,105 psi | 66% | 2661 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,832 psi | 42% | 1526 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,585 psi | 70% | 2605 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 46,354 psi | 73% | 2635 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,481 psi | 65% | 2536 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,031 psi | 64% | 2503 fps | 95.9% |
| IMR 4350 | <<locked>> | 86% | 40,466 psi | 63% | 2543 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,160 psi | 61% | 2493 fps | 95.2% |
| IMR 4831 | <<locked>> | 82% | 30,879 psi | 48% | 2365 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 46,427 psi | 73% | 2677 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 80% | 51,779 psi | 81% | 2703 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,501 psi | 78% | 2680 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,182 psi | 77% | 2635 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 44,541 psi | 70% | 2592 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,709 psi | 58% | 2444 fps | 96.1% |
| Lovex S070 | <<locked>> | 84% | 39,508 psi | 62% | 2526 fps | 95.8% |
| Lovex S071 | <<locked>> | 98% | 36,883 psi | 58% | 2510 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 48,747 psi | 76% | 2654 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,008 psi | 77% | 2651 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,643 psi | 70% | 2635 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 45,672 psi | 72% | 2680 fps | 95.2% |
| Norma MRP | <<locked>> | 94% | 40,727 psi | 64% | 2684 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 33,069 psi | 52% | 2434 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 80% | 44,527 psi | 70% | 2654 fps | 99.7% |
| Ramshot Grand | <<locked>> | 98% | 49,501 psi | 78% | 2815 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 84% | 36,724 psi | 58% | 2530 fps | 95.6% |
| Ramshot Magnum | <<locked>> | 98% | 42,917 psi | 67% | 2671 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 51,735 psi | 81% | 2723 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,634 psi | 81% | 2740 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,383 psi | 43% | 1565 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,076 psi | 68% | 2579 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,399 psi | 76% | 2756 fps | 99.8% |
| ReloadSwiss RS 60 | 54.8 gr | 80% | 38,986 psi | 61% | 2628 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,634 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% | 46,282 psi | 73% | 2605 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,769 psi | 62% | 2536 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 49,850 psi | 78% | 2723 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 94% | 43,250 psi | 68% | 2661 fps | 95% |
| Rottweil R 907 | <<locked>> | 82% | 40,132 psi | 63% | 2513 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,709 psi | 58% | 2444 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,501 psi | 78% | 2680 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,541 psi | 70% | 2592 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 39,508 psi | 62% | 2526 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,785 psi | 64% | 2589 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,328 psi | 79% | 2700 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,153 psi | 75% | 2674 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,530 psi | 78% | 2592 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,611 psi | 65% | 2464 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,189 psi | 60% | 2438 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,745 psi | 72% | 2710 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 49,487 psi | 78% | 2595 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,111 psi | 79% | 2694 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 40,495 psi | 63% | 2543 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 29,733 psi | 47% | 2392 fps | 98.4% |
| Somchem S385 | <<locked>> | 92% | 41,162 psi | 65% | 2592 fps | 95.3% |
| Unknown powder | <<locked>> | 80% | 35,839 psi | 56% | 2490 fps | 96.5% |
| Vihtavuori N133 | <<locked>> | 80% | 47,079 psi | 74% | 2536 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,108 psi | 72% | 2575 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,006 psi | 72% | 2582 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,534 psi | 54% | 2395 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 35,940 psi | 56% | 2467 fps | 97.1% |
| Vihtavuori N165 | <<locked>> | 98% | 41,727 psi | 65% | 2592 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 45,658 psi | 72% | 2605 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,376 psi | 57% | 2507 fps | 97.1% |
| Vihtavuori N555 | <<locked>> | 84% | 29,240 psi | 46% | 2382 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,997 psi | 53% | 2415 fps | 98.6% |
| Winchester 760 | <<locked>> | 80% | 38,101 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% | 2654 fps | 95.1% |
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 | Alaska Bullet Works Kodiak SP SPBC. 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 1:13.0 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 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .300 WSM with the .308 | 180gr | Alaska Bullet Works Kodiak SP SPBC 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.