Load Specifications
Bullet:.308 | 180gr | Norma VULKAN
Bullet Manufacturer:Norma
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:1:15.0
Load data in caliber .300 WSM with .308 | 180gr | Norma VULKAN bullet and 103 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-16 and Hodgdon Superformance.
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% | 55,114 psi | 86% | 2713 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,230 psi | 85% | 2733 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,690 psi | 78% | 2759 fps | 99% |
| Accurate 4064 | <<locked>> | 86% | 55,317 psi | 87% | 2766 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,709 psi | 87% | 2867 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 54,708 psi | 86% | 2795 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,767 psi | 87% | 2795 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,840 psi | 89% | 2904 fps | 98% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,898 psi | 89% | 2789 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,592 psi | 86% | 2917 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,405 psi | 88% | 2822 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,739 psi | 89% | 2841 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,246 psi | 88% | 2920 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,128 psi | 85% | 2897 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,985 psi | 88% | 2894 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 49,400 psi | 77% | 2835 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,615 psi | 73% | 2779 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,814 psi | 64% | 2690 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,040 psi | 83% | 2963 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,433 psi | 85% | 2808 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 57,217 psi | 90% | 2838 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 49,400 psi | 77% | 2835 fps | 97% |
| Bofors RP7 | <<locked>> | 92% | 56,637 psi | 89% | 2818 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,753 psi | 89% | 2818 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,653 psi | 90% | 2851 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,811 psi | 87% | 2884 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 94% | 56,144 psi | 88% | 2848 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 82% | 55,288 psi | 87% | 2802 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,521 psi | 89% | 2841 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 55,303 psi | 87% | 2838 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,404 psi | 85% | 2900 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,100 psi | 57% | 1726 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,376 psi | 87% | 2789 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 54,404 psi | 85% | 2759 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 54,534 psi | 85% | 2769 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,927 psi | 89% | 2799 fps | 99.1% |
| IMR 4350 | <<locked>> | 96% | 57,348 psi | 90% | 2848 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,013 psi | 86% | 2795 fps | 98.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,768 psi | 89% | 2864 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 54,505 psi | 85% | 2818 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 56,376 psi | 88% | 2831 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 82% | 56,898 psi | 89% | 2789 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,926 psi | 86% | 2769 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,058 psi | 89% | 2769 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,317 psi | 87% | 2772 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,824 psi | 86% | 2789 fps | 99.6% |
| Lovex S070 | <<locked>> | 94% | 55,898 psi | 88% | 2831 fps | 99.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,234 psi | 65% | 2608 fps | 97.4% |
| Norma 201 | <<locked>> | 84% | 56,826 psi | 89% | 2785 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,493 psi | 90% | 2782 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,956 psi | 88% | 2828 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,563 psi | 86% | 2848 fps | 97.5% |
| Norma MRPᴾ | <<locked>> | 100% | 52,272 psi | 82% | 2917 fps | 98.7% |
| Norma URP | <<locked>> | 94% | 54,433 psi | 85% | 2851 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 56,739 psi | 89% | 2854 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,811 psi | 87% | 2940 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 96% | 56,898 psi | 89% | 2904 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,341 psi | 76% | 2789 fps | 97.2% |
| Ramshot TAC | <<locked>> | 82% | 56,898 psi | 89% | 2815 fps | 99.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,072 psi | 89% | 2831 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,840 psi | 58% | 1768 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,624 psi | 90% | 2838 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,725 psi | 90% | 2910 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 57,537 psi | 90% | 2943 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,274 psi | 87% | 2887 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,012 psi | 85% | 2913 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 57,638 psi | 90% | 2759 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,464 psi | 90% | 2785 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 57,058 psi | 89% | 2828 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 55,100 psi | 86% | 2822 fps | 96.6% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,926 psi | 86% | 2874 fps | 98% |
| Rottweil R 907 | <<locked>> | 92% | 56,637 psi | 89% | 2818 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,824 psi | 86% | 2789 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,926 psi | 86% | 2769 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,317 psi | 87% | 2772 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,898 psi | 88% | 2831 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,187 psi | 86% | 2841 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,680 psi | 87% | 2795 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,579 psi | 89% | 2815 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,740 psi | 90% | 2713 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,085 psi | 86% | 2674 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,708 psi | 86% | 2746 fps | 98.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,433 psi | 85% | 2871 fps | 97.9% |
| Somchem S335 | <<locked>> | 84% | 57,392 psi | 90% | 2713 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,419 psi | 87% | 2785 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 57,217 psi | 90% | 2828 fps | 100% |
| Somchem S361 | <<locked>> | 98% | 56,855 psi | 89% | 2815 fps | 96.1% |
| Somchem S365 | <<locked>> | 98% | 56,782 psi | 89% | 2900 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,724 psi | 87% | 2854 fps | 98.7% |
| Unknown powder | <<locked>> | 92% | 55,100 psi | 86% | 2854 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 86% | 57,624 psi | 90% | 2690 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,609 psi | 90% | 2743 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,145 psi | 90% | 2749 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,187 psi | 86% | 2759 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,622 psi | 87% | 2828 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 46,296 psi | 73% | 2687 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 86% | 56,898 psi | 89% | 2779 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,028 psi | 88% | 2874 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,054 psi | 82% | 2851 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,391 psi | 88% | 2815 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,811 psi | 87% | 2884 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,003 psi | 66% | 2822 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,143 psi | 85% | 2822 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 2495 | <<locked>> | 80% | 48,341 psi | 76% | 2618 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 41,916 psi | 66% | 2520 fps | 95.6% |
| Accurate 3100 | <<locked>> | 90% | 35,317 psi | 55% | 2487 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 45,759 psi | 72% | 2625 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,418 psi | 54% | 2477 fps | 97.1% |
| ADI AR 2206H | <<locked>> | 80% | 51,271 psi | 80% | 2743 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,540 psi | 68% | 2595 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 92% | 43,888 psi | 69% | 2680 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,345 psi | 84% | 2740 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,456 psi | 74% | 2795 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,772 psi | 69% | 2621 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,818 psi | 73% | 2684 fps | 99.8% |
| Alliant Reloder-16 | 52.8 gr | 80% | 34,040 psi | 53% | 2490 fps | 97.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,334 psi | 60% | 2615 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 43,250 psi | 68% | 2671 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 43,395 psi | 68% | 2720 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,513 psi | 42% | 2303 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 94% | 33,765 psi | 53% | 2516 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 86% | 32,155 psi | 50% | 2523 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,821 psi | 80% | 2753 fps | 99.9% |
| Bofors RP3 | <<locked>> | 80% | 43,903 psi | 69% | 2628 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 43,395 psi | 68% | 2720 fps | 95.3% |
| Bofors RP7 | <<locked>> | 82% | 41,408 psi | 65% | 2552 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,939 psi | 83% | 2766 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,425 psi | 70% | 2638 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 80% | 39,581 psi | 62% | 2592 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 86% | 43,903 psi | 69% | 2638 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 51,793 psi | 81% | 2749 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,459 psi | 49% | 2388 fps | 97.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,527 psi | 71% | 2687 fps | 100% |
| Hodgdon Superformance | 63.1 gr | 84% | 40,872 psi | 64% | 2648 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,064 psi | 42% | 1545 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,876 psi | 72% | 2638 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 48,066 psi | 75% | 2667 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,815 psi | 67% | 2572 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,192 psi | 66% | 2543 fps | 96.5% |
| IMR 4350 | <<locked>> | 84% | 39,407 psi | 62% | 2533 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,451 psi | 63% | 2533 fps | 95.9% |
| IMR 4831 | <<locked>> | 80% | 30,226 psi | 47% | 2359 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 48,008 psi | 75% | 2713 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 52,852 psi | 83% | 2779 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 53,345 psi | 84% | 2740 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,387 psi | 81% | 2720 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,415 psi | 79% | 2667 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 45,919 psi | 72% | 2628 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,869 psi | 59% | 2484 fps | 96.7% |
| Lovex S070 | <<locked>> | 82% | 38,551 psi | 60% | 2516 fps | 95.7% |
| Lovex S071 | <<locked>> | 94% | 33,910 psi | 53% | 2451 fps | 95% |
| Norma 201 | <<locked>> | 80% | 50,125 psi | 79% | 2687 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,662 psi | 79% | 2687 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,180 psi | 72% | 2674 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 44,541 psi | 70% | 2674 fps | 95.2% |
| Norma MRP | <<locked>> | 92% | 39,682 psi | 62% | 2674 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 34,447 psi | 54% | 2477 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 80% | 46,151 psi | 72% | 2690 fps | 99.9% |
| Ramshot Grand | <<locked>> | 96% | 48,095 psi | 75% | 2805 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 82% | 35,824 psi | 56% | 2516 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 96% | 41,510 psi | 65% | 2657 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 53,200 psi | 83% | 2759 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,287 psi | 84% | 2779 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,427 psi | 43% | 1578 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,585 psi | 70% | 2621 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,386 psi | 79% | 2799 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,756 psi | 64% | 2671 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,113 psi | 53% | 2493 fps | 96.6% |
| ReloadSwiss RS 70 | 57.7 gr | 80% | 33,460 psi | 52% | 2493 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 54,331 psi | 85% | 2713 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,877 psi | 75% | 2644 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,278 psi | 65% | 2575 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 48,501 psi | 76% | 2713 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 92% | 42,279 psi | 66% | 2654 fps | 95% |
| Rottweil R 907 | <<locked>> | 82% | 41,408 psi | 65% | 2552 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,869 psi | 59% | 2484 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,387 psi | 81% | 2720 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,919 psi | 72% | 2628 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,551 psi | 60% | 2516 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,409 psi | 66% | 2628 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,214 psi | 82% | 2743 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,777 psi | 78% | 2713 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,213 psi | 80% | 2625 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,120 psi | 68% | 2497 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,043 psi | 58% | 2428 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,672 psi | 70% | 2703 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 50,792 psi | 80% | 2625 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,692 psi | 81% | 2730 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,785 psi | 65% | 2575 fps | 99.7% |
| Somchem S361 | <<locked>> | 96% | 53,287 psi | 84% | 2759 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 30,995 psi | 49% | 2434 fps | 98.9% |
| Somchem S385 | <<locked>> | 90% | 40,118 psi | 63% | 2582 fps | 95.3% |
| Unknown powder | <<locked>> | 80% | 37,260 psi | 58% | 2533 fps | 97.2% |
| Vihtavuori N133 | <<locked>> | 80% | 48,341 psi | 76% | 2566 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,906 psi | 75% | 2612 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,384 psi | 74% | 2615 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,781 psi | 56% | 2428 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 37,246 psi | 58% | 2507 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 96% | 40,640 psi | 64% | 2582 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 47,137 psi | 74% | 2638 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,898 psi | 59% | 2549 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 82% | 28,790 psi | 45% | 2375 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,157 psi | 55% | 2451 fps | 99% |
| Winchester 760 | <<locked>> | 80% | 39,581 psi | 62% | 2592 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,527 psi | 42% | 2382 fps | 96% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,656 psi | 68% | 2644 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 103 powders for .300 WSM loaded with the .308 | 180gr | Norma VULKAN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,963 fps; across all powders the maximum-charge window runs from 1,726 fps to 2,963 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 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 1:15.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, 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-16, Hodgdon Superformance rank at the top here: for .300 WSM with the .308 | 180gr | Norma VULKAN 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.