Load Specifications
Load data in caliber .300 WSM with .308 | 168gr | Speer Target Match bullet and 101 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 2015 | <<locked>> | 82% | 55,405 psi | 87% | 2772 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 54,940 psi | 86% | 2805 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,549 psi | 85% | 2854 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,491 psi | 85% | 2815 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,513 psi | 71% | 2769 fps | 97.5% |
| Accurate 4064 | <<locked>> | 88% | 55,013 psi | 86% | 2854 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,998 psi | 86% | 2946 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 84% | 54,824 psi | 86% | 2884 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 55,767 psi | 87% | 2884 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 52,968 psi | 83% | 2920 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,116 psi | 90% | 2884 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 54,694 psi | 86% | 2802 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,650 psi | 86% | 3009 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,115 psi | 88% | 2907 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,478 psi | 89% | 2930 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,840 psi | 88% | 3002 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 57,261 psi | 90% | 3035 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,040 psi | 82% | 2910 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,931 psi | 67% | 2795 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,588 psi | 76% | 2972 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,433 psi | 85% | 2897 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 56,826 psi | 89% | 2923 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 56,652 psi | 89% | 2897 fps | 98.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,085 psi | 86% | 2812 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 56,739 psi | 89% | 2913 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 56,971 psi | 89% | 2858 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 57,725 psi | 90% | 2943 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 92% | 55,593 psi | 87% | 2966 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 96% | 55,970 psi | 88% | 2927 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 84% | 55,376 psi | 87% | 2894 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,999 psi | 88% | 2927 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,100 psi | 86% | 2927 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,331 psi | 85% | 2976 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,781 psi | 56% | 1775 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,332 psi | 87% | 2877 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 57,595 psi | 90% | 2900 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 54,476 psi | 85% | 2854 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 57,087 psi | 89% | 2881 fps | 98.6% |
| IMR 4350 | <<locked>> | 98% | 57,174 psi | 90% | 2927 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,027 psi | 86% | 2877 fps | 98.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,533 psi | 82% | 2890 fps | 99.7% |
| IMR 4895 | <<locked>> | 86% | 54,476 psi | 85% | 2907 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,116 psi | 90% | 2884 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 54,781 psi | 86% | 2858 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,232 psi | 90% | 2858 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,172 psi | 86% | 2861 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,650 psi | 86% | 2871 fps | 99.2% |
| Lovex S070 | <<locked>> | 96% | 55,666 psi | 87% | 2907 fps | 98.6% |
| Norma 201 | <<locked>> | 86% | 57,014 psi | 89% | 2877 fps | 100% |
| Norma 202 | <<locked>> | 86% | 57,609 psi | 90% | 2877 fps | 100% |
| Norma 203B | <<locked>> | 88% | 55,680 psi | 87% | 2913 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,244 psi | 85% | 2920 fps | 96.6% |
| Norma MRPᴾ | <<locked>> | 100% | 48,225 psi | 76% | 2927 fps | 97.2% |
| Norma URP | <<locked>> | 98% | 57,406 psi | 90% | 2982 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 56,565 psi | 89% | 2943 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 56,347 psi | 88% | 2986 fps | 99.2% |
| Ramshot TAC | <<locked>> | 84% | 57,392 psi | 90% | 2907 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 57,159 psi | 90% | 2923 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 57,740 psi | 90% | 2881 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,477 psi | 57% | 1821 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,172 psi | 85% | 2867 fps | 98.7% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 57,464 psi | 90% | 2999 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,971 psi | 89% | 3031 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,810 psi | 86% | 2969 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 57,696 psi | 90% | 3054 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 54,505 psi | 85% | 2808 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 57,392 psi | 90% | 2874 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 56,695 psi | 89% | 2917 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 50,952 psi | 80% | 2894 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 94% | 56,652 psi | 89% | 2897 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,650 psi | 86% | 2871 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 54,781 psi | 86% | 2858 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,172 psi | 86% | 2861 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 55,666 psi | 87% | 2907 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,752 psi | 86% | 2923 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,086 psi | 88% | 2887 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,695 psi | 89% | 2907 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,694 psi | 86% | 2762 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,143 psi | 86% | 2762 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 54,708 psi | 86% | 2822 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,459 psi | 79% | 2887 fps | 96.2% |
| Somchem S335 | <<locked>> | 86% | 57,725 psi | 90% | 2808 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,477 psi | 87% | 2874 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 56,942 psi | 89% | 2913 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,854 psi | 88% | 2986 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,590 psi | 81% | 2871 fps | 97.3% |
| Unknown powder | <<locked>> | 94% | 54,926 psi | 86% | 2940 fps | 99.6% |
| Vihtavuori N130 | <<locked>> | 82% | 56,739 psi | 89% | 2756 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 54,520 psi | 85% | 2743 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 57,334 psi | 90% | 2835 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 57,305 psi | 90% | 2844 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,940 psi | 86% | 2844 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,448 psi | 87% | 2910 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 56,623 psi | 89% | 2884 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,014 psi | 89% | 2874 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,593 psi | 87% | 2956 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 47,848 psi | 75% | 2874 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,405 psi | 88% | 2900 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,593 psi | 87% | 2966 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,508 psi | 60% | 2815 fps | 99.8% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,896 psi | 84% | 2894 fps | 96.6% |
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% | 52,301 psi | 82% | 2730 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,034 psi | 71% | 2661 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,966 psi | 80% | 2802 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 44,773 psi | 70% | 2648 fps | 95.4% |
| Accurate 3100 | <<locked>> | 94% | 37,086 psi | 58% | 2598 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 42,598 psi | 67% | 2657 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,662 psi | 50% | 2487 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 48,254 psi | 76% | 2776 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 40,959 psi | 64% | 2625 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 98% | 49,705 psi | 78% | 2864 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,357 psi | 79% | 2779 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,227 psi | 80% | 2756 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,309 psi | 69% | 2822 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,930 psi | 64% | 2648 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,903 psi | 69% | 2717 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,792 psi | 50% | 2500 fps | 95% |
| Alliant Reloder-17 | 56.1 gr | 80% | 35,491 psi | 56% | 2628 fps | 98.3% |
| Alliant Reloder-19 | <<locked>> | 98% | 48,689 psi | 76% | 2851 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 88% | 29,588 psi | 46% | 2464 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,055 psi | 53% | 2644 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,747 psi | 75% | 2785 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 40,901 psi | 64% | 2657 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 44,077 psi | 69% | 2680 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 51,880 psi | 81% | 2762 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,690 psi | 78% | 2805 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 53,476 psi | 84% | 2808 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,597 psi | 65% | 2661 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 84% | 42,192 psi | 66% | 2726 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 90% | 46,572 psi | 73% | 2766 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 48,747 psi | 76% | 2785 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,182 psi | 46% | 2398 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,467 psi | 67% | 2717 fps | 99.7% |
| Hodgdon Superformance | 65.2 gr | 88% | 43,700 psi | 68% | 2782 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,672 psi | 42% | 1585 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,192 psi | 68% | 2671 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 44,802 psi | 70% | 2710 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,190 psi | 63% | 2602 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 82% | 42,351 psi | 66% | 2618 fps | 95.6% |
| IMR 4350 | <<locked>> | 90% | 44,599 psi | 70% | 2713 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 43,033 psi | 67% | 2661 fps | 95.7% |
| IMR 4831 | <<locked>> | 84% | 31,763 psi | 50% | 2474 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 44,991 psi | 71% | 2746 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 50,357 psi | 79% | 2779 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 47,834 psi | 75% | 2753 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,732 psi | 75% | 2707 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 43,062 psi | 67% | 2661 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 37,724 psi | 59% | 2552 fps | 95.7% |
| Lovex S070 | <<locked>> | 86% | 40,799 psi | 64% | 2641 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 47,181 psi | 74% | 2723 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,616 psi | 75% | 2730 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,265 psi | 68% | 2703 fps | 99.3% |
| Norma 204 | <<locked>> | 94% | 50,662 psi | 79% | 2861 fps | 95.8% |
| Norma MRP | <<locked>> | 96% | 42,061 psi | 66% | 2799 fps | 95.4% |
| Norma URP | <<locked>> | 82% | 34,055 psi | 53% | 2543 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 43,091 psi | 68% | 2720 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 37,898 psi | 59% | 2641 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 50,299 psi | 79% | 2795 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,154 psi | 79% | 2815 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 54,172 psi | 85% | 2831 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,180 psi | 43% | 1627 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,669 psi | 65% | 2641 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 46,601 psi | 73% | 2825 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,739 psi | 59% | 2690 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 33,678 psi | 53% | 2562 fps | 95.4% |
| ReloadSwiss RS 70 | 59.8 gr | 84% | 35,679 psi | 56% | 2621 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 51,271 psi | 80% | 2759 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,078 psi | 71% | 2677 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 38,406 psi | 60% | 2598 fps | 99% |
| Rottweil R 905 | <<locked>> | 98% | 47,456 psi | 74% | 2831 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 86% | 44,077 psi | 69% | 2680 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 82% | 37,724 psi | 59% | 2552 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,834 psi | 75% | 2753 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,062 psi | 67% | 2661 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 40,799 psi | 64% | 2641 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,349 psi | 62% | 2648 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 48,834 psi | 77% | 2769 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,644 psi | 73% | 2743 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,414 psi | 76% | 2671 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,538 psi | 64% | 2536 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,163 psi | 66% | 2605 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,007 psi | 74% | 2825 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 47,993 psi | 75% | 2671 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,631 psi | 76% | 2766 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 39,044 psi | 61% | 2602 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 28,631 psi | 45% | 2441 fps | 97.3% |
| Somchem S385 | <<locked>> | 96% | 45,252 psi | 71% | 2759 fps | 95.8% |
| Unknown powder | <<locked>> | 80% | 34,592 psi | 54% | 2546 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 53,345 psi | 84% | 2710 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,803 psi | 72% | 2615 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,788 psi | 70% | 2654 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,498 psi | 70% | 2654 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,475 psi | 52% | 2457 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 80% | 34,606 psi | 54% | 2520 fps | 96% |
| Vihtavuori N530 | <<locked>> | 80% | 53,142 psi | 83% | 2835 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,266 psi | 69% | 2674 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,201 psi | 55% | 2566 fps | 96% |
| Vihtavuori N555 | <<locked>> | 86% | 30,052 psi | 47% | 2487 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,967 psi | 52% | 2467 fps | 97.7% |
| Winchester 760 | <<locked>> | 84% | 42,192 psi | 66% | 2726 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,804 psi | 44% | 2484 fps | 95.3% |
| Winchester Supreme 780 | <<locked>> | 98% | 50,154 psi | 79% | 2831 fps | 95.7% |
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 | 168gr | Speer Target Match. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,054 fps; across all powders the maximum-charge window runs from 1,775 fps to 3,054 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 168.0 gr projectile in 0.308" calls for a 1:7.5 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. ReloadSwiss RS 70, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 WSM with the .308 | 168gr | Speer Target Match they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, 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.