Load Specifications
Load data in caliber .300 WSM with .308 | 168gr | Barnes TAC-X bullet and 100 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, 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.
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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% | 56,202 psi | 88% | 2782 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,984 psi | 86% | 2805 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 55,376 psi | 87% | 2864 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 55,463 psi | 87% | 2822 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,163 psi | 66% | 2703 fps | 96.5% |
| Accurate 4064 | <<locked>> | 90% | 54,897 psi | 86% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 55,332 psi | 87% | 2946 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 86% | 55,579 psi | 87% | 2890 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 56,608 psi | 89% | 2890 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,549 psi | 85% | 2841 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,550 psi | 87% | 2812 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 55,506 psi | 87% | 3015 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 56,739 psi | 89% | 2913 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 57,377 psi | 90% | 2936 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 56,579 psi | 89% | 3005 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,317 psi | 85% | 2989 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,321 psi | 63% | 2736 fps | 99.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,382 psi | 71% | 2907 fps | 98.7% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,448 psi | 87% | 2907 fps | 99.8% |
| Bofors RP3 | <<locked>> | 92% | 57,392 psi | 90% | 2927 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 57,305 psi | 90% | 2900 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,260 psi | 88% | 2822 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 57,638 psi | 90% | 2920 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 56,144 psi | 88% | 2972 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 54,433 psi | 85% | 2818 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 54,824 psi | 86% | 2894 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 94% | 56,231 psi | 88% | 2972 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 98% | 56,681 psi | 89% | 2930 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 86% | 56,202 psi | 88% | 2904 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,866 psi | 83% | 2877 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,072 psi | 88% | 2936 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 55,332 psi | 87% | 2986 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,505 psi | 56% | 1762 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,391 psi | 88% | 2887 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 54,853 psi | 86% | 2861 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,434 psi | 87% | 2864 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 54,839 psi | 86% | 2838 fps | 98.1% |
| IMR 4350 | <<locked>> | 98% | 54,244 psi | 85% | 2874 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 94% | 56,014 psi | 88% | 2884 fps | 98.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,472 psi | 78% | 2838 fps | 99.4% |
| IMR 4895 | <<locked>> | 88% | 55,216 psi | 87% | 2913 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 54,549 psi | 85% | 2841 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,376 psi | 87% | 2864 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,129 psi | 86% | 2818 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 55,883 psi | 88% | 2867 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 55,100 psi | 86% | 2874 fps | 99.1% |
| Lovex S070 | <<locked>> | 98% | 56,202 psi | 88% | 2910 fps | 98.5% |
| Norma 201 | <<locked>> | 86% | 54,172 psi | 85% | 2835 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,882 psi | 86% | 2835 fps | 100% |
| Norma 203B | <<locked>> | 90% | 56,550 psi | 89% | 2923 fps | 100% |
| Norma 204 | <<locked>> | 98% | 55,143 psi | 86% | 2927 fps | 96.5% |
| Norma MRPᴾ | <<locked>> | 100% | 45,165 psi | 71% | 2858 fps | 96.1% |
| Norma URP | <<locked>> | 98% | 54,389 psi | 85% | 2936 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 90% | 57,450 psi | 90% | 2949 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 56,913 psi | 89% | 2989 fps | 99.2% |
| Ramshot TAC | <<locked>> | 84% | 54,911 psi | 86% | 2864 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,433 psi | 85% | 2877 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,376 psi | 87% | 2844 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,911 psi | 56% | 1801 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 57,363 psi | 90% | 2867 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 54,969 psi | 86% | 2874 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,302 psi | 85% | 2949 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 53,911 psi | 84% | 2982 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 55,042 psi | 86% | 2969 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 54,810 psi | 86% | 3002 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 84% | 54,998 psi | 86% | 2815 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,592 psi | 86% | 2831 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 57,246 psi | 90% | 2920 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 57,305 psi | 90% | 2900 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 96% | 55,100 psi | 86% | 2874 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,376 psi | 87% | 2864 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,883 psi | 88% | 2867 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 56,202 psi | 88% | 2910 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,506 psi | 87% | 2930 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 57,087 psi | 89% | 2897 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 53,983 psi | 85% | 2861 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,854 psi | 88% | 2776 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 56,028 psi | 88% | 2769 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,434 psi | 87% | 2828 fps | 98.2% |
| Somchem S321 | <<locked>> | 82% | 55,898 psi | 88% | 2874 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,100 psi | 86% | 2769 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 56,521 psi | 89% | 2884 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 57,609 psi | 90% | 2920 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,330 psi | 82% | 2933 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,544 psi | 76% | 2815 fps | 96.4% |
| Unknown powder | <<locked>> | 96% | 55,506 psi | 87% | 2943 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 84% | 57,566 psi | 90% | 2762 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,347 psi | 87% | 2749 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,621 psi | 86% | 2795 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 54,723 psi | 86% | 2805 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,434 psi | 87% | 2848 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 56,115 psi | 88% | 2913 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 54,172 psi | 85% | 2844 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,288 psi | 85% | 2831 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,391 psi | 88% | 2963 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,367 psi | 70% | 2812 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 57,261 psi | 90% | 2907 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,854 psi | 88% | 2897 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 56,231 psi | 88% | 2972 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,955 psi | 56% | 2743 fps | 99.2% |
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% | 49,559 psi | 78% | 2690 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,018 psi | 66% | 2612 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,008 psi | 75% | 2756 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 45,397 psi | 71% | 2654 fps | 95.3% |
| Accurate 3100 | <<locked>> | 98% | 39,291 psi | 62% | 2648 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 39,798 psi | 62% | 2608 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 33,649 psi | 53% | 2539 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 45,876 psi | 72% | 2730 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 39,030 psi | 61% | 2579 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,051 psi | 75% | 2736 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 48,602 psi | 76% | 2720 fps | 100% |
| Alliant Power Pro 2000-MR | 55.4 gr | 80% | 41,945 psi | 66% | 2769 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,537 psi | 60% | 2598 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,481 psi | 65% | 2664 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,055 psi | 53% | 2559 fps | 95.9% |
| Alliant Reloder-17 | 54.5 gr | 80% | 33,272 psi | 52% | 2566 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,283 psi | 46% | 2454 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 94% | 36,477 psi | 57% | 2703 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,382 psi | 71% | 2740 fps | 98.8% |
| Bofors RP3 | <<locked>> | 80% | 38,305 psi | 60% | 2602 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 44,498 psi | 70% | 2684 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,676 psi | 78% | 2723 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,021 psi | 74% | 2759 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 52,315 psi | 82% | 2913 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 80% | 51,213 psi | 80% | 2772 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,030 psi | 61% | 2608 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 86% | 42,554 psi | 67% | 2730 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 92% | 47,007 psi | 74% | 2766 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 46,340 psi | 73% | 2743 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,225 psi | 46% | 2398 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,900 psi | 63% | 2661 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 90% | 44,469 psi | 70% | 2792 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,339 psi | 41% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,176 psi | 65% | 2628 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 42,279 psi | 66% | 2667 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,145 psi | 60% | 2556 fps | 97.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 42,975 psi | 67% | 2628 fps | 95.6% |
| IMR 4350 | <<locked>> | 92% | 45,020 psi | 71% | 2717 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 43,555 psi | 68% | 2667 fps | 95.6% |
| IMR 4831 | <<locked>> | 88% | 33,678 psi | 53% | 2523 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 42,554 psi | 67% | 2697 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 48,051 psi | 75% | 2736 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 45,121 psi | 71% | 2707 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,818 psi | 72% | 2667 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 40,814 psi | 64% | 2615 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 37,884 psi | 59% | 2556 fps | 95.5% |
| Lovex S070 | <<locked>> | 88% | 40,944 psi | 64% | 2641 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 44,831 psi | 70% | 2680 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 45,150 psi | 71% | 2687 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,872 psi | 64% | 2654 fps | 98.8% |
| Norma 204 | <<locked>> | 96% | 51,314 psi | 80% | 2864 fps | 95.7% |
| Norma MRP | <<locked>> | 98% | 42,264 psi | 66% | 2799 fps | 95.2% |
| Norma URP | <<locked>> | 84% | 34,098 psi | 53% | 2543 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 40,611 psi | 64% | 2667 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 38,116 psi | 60% | 2644 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 48,051 psi | 75% | 2749 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,703 psi | 75% | 2769 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,793 psi | 81% | 2789 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,789 psi | 42% | 1614 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,795 psi | 84% | 2818 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,566 psi | 62% | 2592 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,077 psi | 69% | 2776 fps | 99% |
| ReloadSwiss RS 60 | 54.5 gr | 80% | 35,462 psi | 56% | 2635 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 33,518 psi | 53% | 2556 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 35,955 psi | 56% | 2621 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 48,602 psi | 76% | 2717 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,496 psi | 67% | 2628 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 35,839 psi | 56% | 2543 fps | 98.3% |
| Rottweil R 907 | <<locked>> | 88% | 44,498 psi | 70% | 2684 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 37,884 psi | 59% | 2556 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,121 psi | 71% | 2707 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,814 psi | 64% | 2615 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 40,944 psi | 64% | 2641 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,115 psi | 58% | 2598 fps | 97.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,282 psi | 73% | 2723 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,425 psi | 70% | 2700 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,253 psi | 72% | 2631 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,508 psi | 60% | 2497 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,540 psi | 67% | 2608 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 52,199 psi | 82% | 2818 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,803 psi | 72% | 2631 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,180 psi | 72% | 2720 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 36,811 psi | 58% | 2552 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 26,585 psi | 42% | 2375 fps | 96% |
| Somchem S385 | <<locked>> | 98% | 45,426 psi | 71% | 2759 fps | 95.6% |
| Unknown powder | <<locked>> | 82% | 34,737 psi | 54% | 2549 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 51,097 psi | 80% | 2677 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,627 psi | 68% | 2575 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,337 psi | 66% | 2612 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,322 psi | 66% | 2615 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,386 psi | 49% | 2405 fps | 98.1% |
| Vihtavuori N160 | <<locked>> | 82% | 34,751 psi | 54% | 2526 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 50,691 psi | 79% | 2792 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 41,989 psi | 66% | 2631 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 35,273 psi | 55% | 2566 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 90% | 31,691 psi | 50% | 2533 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,038 psi | 49% | 2415 fps | 96.7% |
| Winchester 748 | <<locked>> | 80% | 52,083 psi | 82% | 2844 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 42,554 psi | 67% | 2730 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 94% | 29,472 psi | 46% | 2539 fps | 96.2% |
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 119 powders for .300 WSM loaded with the .308 | 168gr | Barnes TAC-X. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,015 fps; across all powders the maximum-charge window runs from 1,762 fps to 3,015 fps. Accurate 3100 gives the best case fill at 100 %, and 119 of the 119 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, ADI AR 2213 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, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .300 WSM with the .308 | 168gr | Barnes TAC-X they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Alliant Reloder-25 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.