Load Specifications
Load data in caliber .300 WSM with .308 | 165gr | SUS-TAC HP bullet and 99 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, 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 2015 | <<locked>> | 84% | 55,970 psi | 88% | 2792 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,592 psi | 86% | 2815 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,694 psi | 86% | 2867 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,723 psi | 86% | 2815 fps | 97% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,713 psi | 65% | 2703 fps | 96% |
| Accurate 4064 | <<locked>> | 90% | 54,766 psi | 86% | 2864 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 54,418 psi | 85% | 2943 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 86% | 55,042 psi | 86% | 2894 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 56,057 psi | 88% | 2894 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 57,508 psi | 90% | 2894 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,998 psi | 86% | 2818 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,636 psi | 86% | 3012 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,970 psi | 88% | 2913 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,565 psi | 89% | 2936 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,521 psi | 87% | 3002 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 56,971 psi | 89% | 3041 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,842 psi | 62% | 2733 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,715 psi | 70% | 2900 fps | 98.3% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,679 psi | 86% | 2907 fps | 99.7% |
| Bofors RP3 | <<locked>> | 92% | 56,724 psi | 89% | 2930 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 56,768 psi | 89% | 2900 fps | 97.6% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,666 psi | 87% | 2828 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 56,869 psi | 89% | 2923 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,172 psi | 86% | 2972 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 84% | 57,363 psi | 90% | 2871 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 54,215 psi | 85% | 2894 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 94% | 55,245 psi | 87% | 2966 fps | 98% |
| Hodgdon H4350 | <<locked>> | 98% | 55,941 psi | 88% | 2927 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 86% | 55,651 psi | 87% | 2907 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,822 psi | 81% | 2874 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,172 psi | 86% | 2940 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 54,346 psi | 85% | 2976 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,636 psi | 56% | 1768 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,767 psi | 87% | 2890 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 57,580 psi | 90% | 2910 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 54,578 psi | 86% | 2861 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 94% | 57,377 psi | 90% | 2887 fps | 98.2% |
| IMR 4350ᴾ | <<locked>> | 100% | 56,884 psi | 89% | 2923 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,317 psi | 87% | 2881 fps | 97.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,863 psi | 77% | 2841 fps | 99.1% |
| IMR 4895 | <<locked>> | 88% | 54,447 psi | 85% | 2913 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 57,508 psi | 90% | 2894 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 54,694 psi | 86% | 2867 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,520 psi | 85% | 2822 fps | 99.9% |
| Lovex S062 | <<locked>> | 90% | 55,477 psi | 87% | 2874 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 54,563 psi | 86% | 2874 fps | 98.8% |
| Lovex S070 | <<locked>> | 98% | 55,390 psi | 87% | 2907 fps | 98.1% |
| Norma 201 | <<locked>> | 88% | 57,116 psi | 90% | 2887 fps | 100% |
| Norma 202 | <<locked>> | 88% | 57,682 psi | 90% | 2887 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,811 psi | 87% | 2923 fps | 100% |
| Norma 204 | <<locked>> | 98% | 54,288 psi | 85% | 2923 fps | 95.9% |
| Norma URPᴾ | <<locked>> | 100% | 57,058 psi | 89% | 2986 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 90% | 56,623 psi | 89% | 2953 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 55,956 psi | 88% | 2986 fps | 98.8% |
| Ramshot TAC | <<locked>> | 84% | 54,215 psi | 85% | 2861 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 57,435 psi | 90% | 2933 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,621 psi | 86% | 2841 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,100 psi | 57% | 1811 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 56,695 psi | 89% | 2871 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,317 psi | 85% | 2871 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 57,392 psi | 90% | 3009 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 56,811 psi | 89% | 3041 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 54,099 psi | 85% | 2966 fps | 99.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 57,464 psi | 90% | 3051 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 84% | 54,708 psi | 86% | 2818 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,186 psi | 85% | 2835 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 56,550 psi | 89% | 2920 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 56,768 psi | 89% | 2900 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 96% | 54,563 psi | 86% | 2874 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 54,694 psi | 86% | 2867 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,477 psi | 87% | 2874 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,390 psi | 87% | 2907 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,737 psi | 86% | 2930 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,463 psi | 88% | 2897 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 56,971 psi | 89% | 2917 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,201 psi | 87% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,419 psi | 87% | 2772 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 54,969 psi | 86% | 2828 fps | 97.8% |
| Somchem S321 | <<locked>> | 82% | 55,172 psi | 86% | 2874 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 54,679 psi | 86% | 2776 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,753 psi | 87% | 2884 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 56,913 psi | 89% | 2920 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,300 psi | 80% | 2933 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 47,877 psi | 75% | 2812 fps | 95.9% |
| Unknown powder | <<locked>> | 96% | 54,447 psi | 85% | 2940 fps | 99.2% |
| Vihtavuori N130 | <<locked>> | 84% | 57,101 psi | 89% | 2769 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 54,897 psi | 86% | 2756 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 57,493 psi | 90% | 2848 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 57,493 psi | 90% | 2858 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 54,766 psi | 86% | 2851 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,129 psi | 86% | 2913 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 84% | 57,188 psi | 90% | 2900 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 57,072 psi | 89% | 2884 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 55,477 psi | 87% | 2963 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,656 psi | 68% | 2812 fps | 98.8% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 56,507 psi | 89% | 2910 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,969 psi | 86% | 2900 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,245 psi | 87% | 2966 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,752 psi | 56% | 2736 fps | 98.8% |
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 2015 | <<locked>> | 80% | 49,298 psi | 77% | 2697 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,047 psi | 66% | 2621 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,630 psi | 75% | 2762 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 48,167 psi | 75% | 2710 fps | 95.6% |
| Accurate 3100 | <<locked>> | 98% | 38,870 psi | 61% | 2648 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 39,784 psi | 62% | 2618 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 33,533 psi | 53% | 2543 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 45,629 psi | 72% | 2736 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 80% | 38,812 psi | 61% | 2582 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,718 psi | 75% | 2743 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 48,109 psi | 75% | 2723 fps | 100% |
| Alliant Power Pro 2000-MR | 54.3 gr | 80% | 41,510 psi | 65% | 2766 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,392 psi | 60% | 2605 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,336 psi | 65% | 2671 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 33,823 psi | 53% | 2559 fps | 95.3% |
| Alliant Reloder-17 | 53.4 gr | 80% | 33,098 psi | 52% | 2569 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 31,111 psi | 49% | 2513 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 36,187 psi | 57% | 2703 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,730 psi | 70% | 2736 fps | 98.5% |
| Bofors RP3 | <<locked>> | 80% | 38,087 psi | 60% | 2608 fps | 98.8% |
| Bofors RP7 | <<locked>> | 90% | 47,195 psi | 74% | 2743 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,327 psi | 77% | 2730 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,615 psi | 73% | 2766 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 51,634 psi | 81% | 2913 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 80% | 50,691 psi | 79% | 2779 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,986 psi | 61% | 2612 fps | 96.5% |
| Hodgdon H414 | <<locked>> | 86% | 41,974 psi | 66% | 2726 fps | 95% |
| Hodgdon H4350 | <<locked>> | 94% | 49,472 psi | 78% | 2822 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 46,093 psi | 72% | 2746 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,124 psi | 46% | 2402 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,653 psi | 62% | 2671 fps | 99.1% |
| Hodgdon Superformance | 65 gr | 92% | 47,108 psi | 74% | 2848 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,542 psi | 42% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,872 psi | 64% | 2631 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 41,887 psi | 66% | 2671 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,913 psi | 59% | 2556 fps | 97.5% |
| IMR 4166 Enduron | <<locked>> | 84% | 42,598 psi | 67% | 2625 fps | 95% |
| IMR 4350 | <<locked>> | 94% | 47,195 psi | 74% | 2766 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 43,163 psi | 68% | 2667 fps | 95.1% |
| IMR 4831 | <<locked>> | 88% | 33,533 psi | 53% | 2526 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 42,366 psi | 66% | 2700 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 80% | 47,718 psi | 75% | 2743 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 44,831 psi | 70% | 2713 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,542 psi | 71% | 2671 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 40,698 psi | 64% | 2621 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 37,739 psi | 59% | 2559 fps | 95.1% |
| Lovex S070 | <<locked>> | 90% | 43,308 psi | 68% | 2694 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 44,527 psi | 70% | 2684 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 44,889 psi | 70% | 2690 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,727 psi | 64% | 2661 fps | 98.6% |
| Norma 204 | <<locked>> | 96% | 50,488 psi | 79% | 2858 fps | 95% |
| Norma URP | <<locked>> | 84% | 33,837 psi | 53% | 2546 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 40,248 psi | 63% | 2671 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 40,277 psi | 63% | 2700 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 47,427 psi | 74% | 2746 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,007 psi | 74% | 2766 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,358 psi | 80% | 2792 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,847 psi | 42% | 1617 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,447 psi | 84% | 2825 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 41,916 psi | 66% | 2648 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,482 psi | 68% | 2776 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,230 psi | 55% | 2638 fps | 99.5% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 35,679 psi | 56% | 2618 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 38,232 psi | 60% | 2684 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 48,602 psi | 76% | 2726 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,409 psi | 66% | 2635 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 35,882 psi | 56% | 2552 fps | 98.1% |
| Rottweil R 907 | <<locked>> | 90% | 47,195 psi | 74% | 2743 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 37,739 psi | 59% | 2559 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,831 psi | 70% | 2713 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,698 psi | 64% | 2621 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 43,308 psi | 68% | 2694 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,753 psi | 58% | 2598 fps | 97.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,006 psi | 72% | 2723 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,005 psi | 69% | 2700 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,963 psi | 72% | 2638 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,290 psi | 60% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,366 psi | 66% | 2612 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 51,517 psi | 81% | 2822 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,426 psi | 71% | 2635 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,527 psi | 71% | 2717 fps | 99.2% |
| Somchem S355 | <<locked>> | 80% | 36,608 psi | 57% | 2556 fps | 98% |
| Somchem S365 | <<locked>> | 80% | 26,687 psi | 42% | 2385 fps | 95.6% |
| Somchem S385 | <<locked>> | 98% | 44,817 psi | 70% | 2756 fps | 95% |
| Unknown powder | <<locked>> | 84% | 36,854 psi | 58% | 2605 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 50,676 psi | 79% | 2680 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,236 psi | 68% | 2582 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,061 psi | 66% | 2618 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,105 psi | 66% | 2621 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,357 psi | 49% | 2411 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 82% | 34,519 psi | 54% | 2526 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 50,096 psi | 79% | 2795 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,626 psi | 65% | 2638 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 35,085 psi | 55% | 2572 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 90% | 31,488 psi | 49% | 2536 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,879 psi | 48% | 2415 fps | 96.2% |
| Winchester 748 | <<locked>> | 80% | 51,184 psi | 80% | 2844 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 41,974 psi | 66% | 2726 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 94% | 29,385 psi | 46% | 2533 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 116 powders for .300 WSM loaded with the .308 | 165gr | SUS-TAC HP. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,051 fps; across all powders the maximum-charge window runs from 1,768 fps to 3,051 fps. Accurate 3100 gives the best case fill at 100 %, and 116 of the 116 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-16 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 Power Pro 2000-MR, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 WSM with the .308 | 165gr | SUS-TAC HP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 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.