Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 165gr | Fox Classic Hunter bullet and 92 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Norma MRP and ReloadSwiss RS 70.
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>> | 82% | 55,637 psi | 87% | 2890 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,421 psi | 90% | 2972 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,593 psi | 87% | 3012 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 56,260 psi | 88% | 2949 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,911 psi | 84% | 3009 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,565 psi | 89% | 2989 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,172 psi | 86% | 3058 fps | 98.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,579 psi | 89% | 3110 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,246 psi | 88% | 3117 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,421 psi | 90% | 3009 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,595 psi | 90% | 3031 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,781 psi | 86% | 3071 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,188 psi | 88% | 3094 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,491 psi | 85% | 3041 fps | 98% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,593 psi | 87% | 3104 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 3031 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,455 psi | 71% | 2953 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 56,652 psi | 89% | 3179 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,734 psi | 80% | 3018 fps | 97.3% |
| Bofors RP3 | <<locked>> | 84% | 54,694 psi | 86% | 2972 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,593 psi | 87% | 3104 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 57,624 psi | 90% | 3015 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 55,042 psi | 86% | 2992 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 56,318 psi | 88% | 3068 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 88% | 55,782 psi | 87% | 3022 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 98% | 56,724 psi | 89% | 3051 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,564 psi | 87% | 3031 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,129 psi | 86% | 2992 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,579 psi | 89% | 3028 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,353 psi | 70% | 2979 fps | 96.5% |
| Hodgdon Superformance | <<locked>> | 90% | 56,695 psi | 89% | 3104 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,318 psi | 57% | 1883 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,971 psi | 89% | 2992 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,898 psi | 88% | 2969 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,114 psi | 86% | 2953 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 55,390 psi | 87% | 2995 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,854 psi | 88% | 2989 fps | 99.2% |
| IMR 4831 | <<locked>> | 92% | 54,418 psi | 85% | 3002 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,419 psi | 87% | 3005 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,563 psi | 86% | 2982 fps | 96.4% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,969 psi | 85% | 3081 fps | 96.8% |
| Lovex S060 | <<locked>> | 82% | 57,363 psi | 90% | 2953 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,130 psi | 88% | 2963 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,898 psi | 88% | 2982 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 57,392 psi | 90% | 3028 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,890 psi | 72% | 2851 fps | 98.5% |
| Norma 201 | <<locked>> | 82% | 57,319 psi | 90% | 2972 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,869 psi | 89% | 3018 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,260 psi | 88% | 3051 fps | 98.1% |
| Norma MRP | <<locked>> | 98% | 55,201 psi | 87% | 3130 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 56,376 psi | 88% | 3051 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,172 psi | 85% | 2989 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,346 psi | 85% | 3097 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 92% | 55,230 psi | 87% | 3051 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,544 psi | 76% | 2959 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,101 psi | 58% | 1929 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,897 psi | 86% | 2972 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,608 psi | 87% | 3084 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,795 psi | 84% | 3028 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,318 psi | 88% | 3123 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,425 psi | 70% | 2972 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 82% | 54,636 psi | 86% | 2923 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,795 psi | 86% | 2969 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,768 psi | 89% | 3028 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 98% | 57,406 psi | 90% | 3087 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 90% | 57,624 psi | 90% | 3015 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,898 psi | 88% | 2982 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 56,130 psi | 88% | 2963 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,392 psi | 90% | 3028 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,594 psi | 89% | 3035 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,450 psi | 90% | 3005 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,840 psi | 88% | 2854 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,521 psi | 87% | 2933 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,913 psi | 89% | 3084 fps | 98.5% |
| Somchem S355 | <<locked>> | 86% | 54,636 psi | 86% | 2963 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,824 psi | 86% | 2959 fps | 96.2% |
| Somchem S365 | <<locked>> | 94% | 55,956 psi | 88% | 3054 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,172 psi | 85% | 2999 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 82% | 54,926 psi | 86% | 2881 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,288 psi | 87% | 2897 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,188 psi | 88% | 2940 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,868 psi | 86% | 2992 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,621 psi | 84% | 2976 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 84% | 57,029 psi | 89% | 2943 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 57,595 psi | 90% | 3048 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,868 psi | 86% | 3058 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,405 psi | 87% | 3117 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,578 psi | 86% | 2956 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,318 psi | 88% | 3068 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,892 psi | 75% | 3091 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,667 psi | 90% | 3012 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,476 psi | 85% | 2995 fps | 98% |
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% | 52,025 psi | 82% | 2841 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,140 psi | 79% | 2851 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 33,953 psi | 53% | 2589 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 49,327 psi | 77% | 2844 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,768 psi | 59% | 2700 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 46,862 psi | 73% | 2825 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 45,121 psi | 71% | 2871 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 96% | 49,197 psi | 77% | 2979 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,315 psi | 82% | 3051 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,456 psi | 74% | 2851 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,647 psi | 79% | 2920 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,869 psi | 58% | 2713 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,177 psi | 66% | 2851 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,744 psi | 70% | 2861 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 42,206 psi | 66% | 2848 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,832 psi | 42% | 2448 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,721 psi | 51% | 2635 fps | 95% |
| Alliant Reloder-26 | 71 gr | 82% | 30,951 psi | 49% | 2625 fps | 95% |
| Bofors RP15 | <<locked>> | 96% | 44,512 psi | 70% | 2897 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 47,659 psi | 75% | 2861 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 42,206 psi | 66% | 2848 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 41,843 psi | 66% | 2723 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 80% | 48,095 psi | 75% | 2874 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 39,958 psi | 63% | 2753 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 80% | 42,902 psi | 67% | 2779 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 96% | 52,779 psi | 83% | 2989 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,692 psi | 81% | 2966 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,389 psi | 54% | 2602 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,794 psi | 83% | 2972 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,524 psi | 65% | 2907 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 38,957 psi | 61% | 2762 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 42% | 1683 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,432 psi | 84% | 2936 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,255 psi | 77% | 2861 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,532 psi | 81% | 2890 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 40,176 psi | 63% | 2707 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,323 psi | 68% | 2759 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 36,376 psi | 57% | 2654 fps | 97.8% |
| IMR 4895 | <<locked>> | 80% | 51,953 psi | 81% | 2949 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 51,184 psi | 80% | 2923 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 98% | 50,198 psi | 79% | 3009 fps | 95.9% |
| Lovex S060 | <<locked>> | 80% | 54,070 psi | 85% | 2904 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,530 psi | 78% | 2858 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,741 psi | 64% | 2703 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 38,943 psi | 61% | 2680 fps | 96% |
| Lovex S071 | <<locked>> | 92% | 35,157 psi | 55% | 2621 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 53,737 psi | 84% | 2917 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,966 psi | 78% | 2907 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,701 psi | 72% | 2861 fps | 95.9% |
| Norma MRP | 73.9 gr | 88% | 38,508 psi | 60% | 2795 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 37,681 psi | 59% | 2700 fps | 98% |
| Ramshot Big Game | <<locked>> | 80% | 50,575 psi | 79% | 2930 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,963 psi | 74% | 2956 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 36,564 psi | 57% | 2684 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 96% | 41,742 psi | 65% | 2825 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,557 psi | 43% | 1722 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,138 psi | 75% | 2854 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,860 psi | 70% | 2910 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,710 psi | 59% | 2720 fps | 97.8% |
| ReloadSwiss RS 70 | 68.6 gr | 80% | 36,608 psi | 57% | 2730 fps | 97.1% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,508 psi | 60% | 2825 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 51,184 psi | 80% | 2867 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,817 psi | 70% | 2802 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,601 psi | 73% | 2848 fps | 95% |
| Rottweil R 905 | <<locked>> | 90% | 43,743 psi | 69% | 2841 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 41,843 psi | 66% | 2723 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,741 psi | 64% | 2703 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 49,530 psi | 78% | 2858 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,943 psi | 61% | 2680 fps | 96% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,224 psi | 72% | 2861 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,722 psi | 84% | 2949 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,166 psi | 72% | 2710 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,784 psi | 62% | 2644 fps | 96.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,352 psi | 68% | 2835 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 45,136 psi | 71% | 2802 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,256 psi | 80% | 2897 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 34,200 psi | 54% | 2654 fps | 99.5% |
| Somchem S385 | <<locked>> | 86% | 38,754 psi | 61% | 2703 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 51,576 psi | 81% | 2831 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,837 psi | 81% | 2844 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,134 psi | 68% | 2730 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,102 psi | 61% | 2700 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 40,959 psi | 64% | 2740 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 50,082 psi | 78% | 2838 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,537 psi | 60% | 2697 fps | 97.9% |
| Vihtavuori N555 | <<locked>> | 80% | 29,573 psi | 46% | 2523 fps | 95.7% |
| Vihtavuori N560 | <<locked>> | 96% | 51,808 psi | 81% | 3054 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,305 psi | 60% | 2671 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 40,147 psi | 63% | 2759 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,280 psi | 40% | 2467 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,867 psi | 84% | 2956 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 44,019 psi | 69% | 2808 fps | 95.6% |
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 99 powders for .300 Weath. Mag. loaded with the .308 | 165gr | Fox Classic Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 3,179 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,179 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 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 165.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, ADI AR 2217 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 Reloder-26, Norma MRP, ReloadSwiss RS 70 rank at the top here: for .300 Weath. Mag. with the .308 | 165gr | Fox Classic Hunter they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 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.