Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 168gr | Hasler Hunting bullet and 93 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 Hodgdon H414.
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 2495 | <<locked>> | 82% | 55,288 psi | 87% | 2854 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,101 psi | 89% | 2940 fps | 99% |
| Accurate 3100ᴾ | <<locked>> | 100% | 55,303 psi | 87% | 2979 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 55,985 psi | 88% | 2917 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 57,246 psi | 90% | 3031 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 56,362 psi | 88% | 2956 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,810 psi | 86% | 3022 fps | 98.1% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,159 psi | 88% | 3077 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,101 psi | 88% | 3084 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,246 psi | 90% | 2979 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,392 psi | 90% | 3002 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,476 psi | 85% | 3035 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,970 psi | 88% | 3061 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,157 psi | 85% | 3009 fps | 98.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 55,114 psi | 86% | 3068 fps | 98.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,011 psi | 82% | 2995 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,063 psi | 71% | 2917 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 56,275 psi | 88% | 3143 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,444 psi | 79% | 2986 fps | 97.4% |
| Bofors RP3 | <<locked>> | 84% | 54,259 psi | 85% | 2940 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 55,114 psi | 86% | 3068 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 57,305 psi | 90% | 2982 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 54,636 psi | 86% | 2956 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 55,883 psi | 88% | 3031 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 55,492 psi | 87% | 2989 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 98% | 56,275 psi | 88% | 3015 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,085 psi | 86% | 2999 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,882 psi | 86% | 2959 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,188 psi | 88% | 2995 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,164 psi | 69% | 2949 fps | 96.5% |
| Hodgdon Superformance | <<locked>> | 90% | 56,449 psi | 88% | 3071 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,289 psi | 57% | 1857 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,710 psi | 89% | 2956 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,854 psi | 88% | 2940 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,911 psi | 86% | 2920 fps | 99.2% |
| IMR 4350 | <<locked>> | 92% | 54,969 psi | 86% | 2959 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,535 psi | 87% | 2956 fps | 99.2% |
| IMR 4831 | <<locked>> | 94% | 57,682 psi | 90% | 3022 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,172 psi | 86% | 2972 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,244 psi | 85% | 2946 fps | 96.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,505 psi | 84% | 3045 fps | 96.8% |
| Lovex S060 | <<locked>> | 82% | 57,290 psi | 90% | 2923 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 55,854 psi | 88% | 2927 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,579 psi | 87% | 2949 fps | 99.8% |
| Lovex S070 | <<locked>> | 92% | 56,898 psi | 89% | 2992 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,730 psi | 72% | 2822 fps | 98.6% |
| Norma 201 | <<locked>> | 82% | 57,029 psi | 89% | 2936 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,637 psi | 89% | 2986 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,912 psi | 88% | 3015 fps | 98.1% |
| Norma MRP | <<locked>> | 98% | 54,737 psi | 86% | 3094 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 55,912 psi | 88% | 3015 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,711 psi | 90% | 3015 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,969 psi | 85% | 3061 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 92% | 54,853 psi | 86% | 3015 fps | 99.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,051 psi | 75% | 2927 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,086 psi | 58% | 1903 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,795 psi | 86% | 2943 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,303 psi | 87% | 3051 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 57,392 psi | 90% | 3058 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,999 psi | 88% | 3087 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,222 psi | 69% | 2943 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 84% | 57,711 psi | 90% | 2940 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,346 psi | 85% | 2933 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,391 psi | 88% | 2992 fps | 97.3% |
| Rottweil R 905 | <<locked>> | 98% | 57,087 psi | 89% | 3054 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 90% | 57,305 psi | 90% | 2982 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,579 psi | 87% | 2949 fps | 99.8% |
| Shooters World Precision | <<locked>> | 84% | 55,854 psi | 88% | 2927 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,898 psi | 89% | 2992 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,304 psi | 88% | 2999 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,029 psi | 89% | 2969 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,564 psi | 87% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,274 psi | 87% | 2900 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,608 psi | 89% | 3048 fps | 98.5% |
| Somchem S335 | <<locked>> | 82% | 57,522 psi | 90% | 2861 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 54,447 psi | 85% | 2933 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,621 psi | 86% | 2930 fps | 96.2% |
| Somchem S365 | <<locked>> | 94% | 55,492 psi | 87% | 3018 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 57,566 psi | 90% | 3025 fps | 99.2% |
| Vihtavuori N135 | <<locked>> | 82% | 54,737 psi | 86% | 2848 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,998 psi | 86% | 2864 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,840 psi | 88% | 2907 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,375 psi | 85% | 2953 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,388 psi | 84% | 2946 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 84% | 56,666 psi | 89% | 2907 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 57,174 psi | 90% | 3015 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,491 psi | 85% | 3022 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,969 psi | 86% | 3081 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,259 psi | 85% | 2923 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,115 psi | 88% | 3035 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,398 psi | 74% | 3054 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,290 psi | 90% | 2976 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,012 psi | 85% | 2963 fps | 97.9% |
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% | 51,866 psi | 81% | 2808 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,937 psi | 78% | 2822 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 33,794 psi | 53% | 2562 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 49,197 psi | 77% | 2815 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,492 psi | 59% | 2671 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 46,717 psi | 73% | 2795 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 44,875 psi | 70% | 2841 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 96% | 48,936 psi | 77% | 2946 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,098 psi | 82% | 3018 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,181 psi | 74% | 2818 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,343 psi | 79% | 2887 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,753 psi | 58% | 2687 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,800 psi | 66% | 2818 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,338 psi | 69% | 2825 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 92% | 41,858 psi | 66% | 2815 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,731 psi | 42% | 2421 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,532 psi | 51% | 2608 fps | 95% |
| Alliant Reloder-26 | 69.7 gr | 82% | 30,705 psi | 48% | 2595 fps | 95% |
| Bofors RP15 | <<locked>> | 96% | 44,164 psi | 69% | 2864 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 47,384 psi | 74% | 2828 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 41,858 psi | 66% | 2815 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 41,727 psi | 65% | 2697 fps | 96.1% |
| Hodgdon H380 | <<locked>> | 80% | 47,848 psi | 75% | 2841 fps | 99.5% |
| Hodgdon H414 | 64.9 gr | 80% | 39,740 psi | 62% | 2723 fps | 96.1% |
| Hodgdon H4350 | <<locked>> | 80% | 42,656 psi | 67% | 2749 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 96% | 52,518 psi | 82% | 2953 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 96% | 51,416 psi | 81% | 2933 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,258 psi | 54% | 2575 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,591 psi | 82% | 2940 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 41,307 psi | 65% | 2877 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 38,696 psi | 61% | 2730 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,093 psi | 42% | 1660 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,142 psi | 83% | 2904 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,139 psi | 77% | 2828 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,474 psi | 81% | 2861 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 39,958 psi | 63% | 2677 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,250 psi | 68% | 2730 fps | 97% |
| IMR 4831 | <<locked>> | 80% | 36,100 psi | 57% | 2621 fps | 97.8% |
| IMR 4895 | <<locked>> | 80% | 51,663 psi | 81% | 2917 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 50,850 psi | 80% | 2890 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 98% | 49,937 psi | 78% | 2979 fps | 95.9% |
| Lovex S060 | <<locked>> | 80% | 53,722 psi | 84% | 2871 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,197 psi | 77% | 2825 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,611 psi | 64% | 2674 fps | 97.7% |
| Lovex S070 | <<locked>> | 80% | 38,856 psi | 61% | 2654 fps | 96.1% |
| Lovex S071 | <<locked>> | 92% | 35,027 psi | 55% | 2595 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 53,621 psi | 84% | 2887 fps | 100% |
| Norma 203B | <<locked>> | 80% | 49,661 psi | 78% | 2874 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,426 psi | 71% | 2828 fps | 95.8% |
| Norma MRP | 72.6 gr | 88% | 38,319 psi | 60% | 2766 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 37,565 psi | 59% | 2671 fps | 98% |
| Ramshot Big Game | <<locked>> | 80% | 50,386 psi | 79% | 2900 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 46,557 psi | 73% | 2923 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 36,361 psi | 57% | 2654 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 96% | 41,394 psi | 65% | 2792 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,543 psi | 43% | 1699 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,950 psi | 75% | 2825 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,454 psi | 70% | 2874 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,536 psi | 59% | 2694 fps | 97.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,463 psi | 57% | 2700 fps | 97.2% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,232 psi | 60% | 2795 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 51,024 psi | 80% | 2838 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,686 psi | 70% | 2772 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,340 psi | 73% | 2815 fps | 95% |
| Rottweil R 905 | <<locked>> | 90% | 43,482 psi | 68% | 2808 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 41,727 psi | 65% | 2697 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,611 psi | 64% | 2674 fps | 97.7% |
| Shooters World Precision | <<locked>> | 80% | 49,197 psi | 77% | 2825 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 38,856 psi | 61% | 2654 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 45,992 psi | 72% | 2828 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,490 psi | 84% | 2917 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,992 psi | 72% | 2680 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,711 psi | 62% | 2618 fps | 96.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,091 psi | 68% | 2805 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 54,157 psi | 85% | 2815 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,020 psi | 71% | 2772 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 51,039 psi | 80% | 2867 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 33,910 psi | 53% | 2621 fps | 99.6% |
| Somchem S385 | <<locked>> | 86% | 38,479 psi | 60% | 2671 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 51,358 psi | 80% | 2799 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,721 psi | 81% | 2815 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,033 psi | 67% | 2700 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,856 psi | 61% | 2671 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 92% | 40,611 psi | 64% | 2710 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 49,835 psi | 78% | 2805 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,305 psi | 60% | 2671 fps | 98% |
| Vihtavuori N555 | <<locked>> | 80% | 29,443 psi | 46% | 2500 fps | 95.8% |
| Vihtavuori N560 | <<locked>> | 96% | 51,343 psi | 80% | 3018 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,203 psi | 60% | 2644 fps | 99.7% |
| Winchester 760 | <<locked>> | 80% | 39,929 psi | 63% | 2726 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,077 psi | 39% | 2438 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,679 psi | 84% | 2923 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 43,700 psi | 68% | 2776 fps | 95.5% |
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 100 powders for .300 Weath. Mag. loaded with the .308 | 168gr | Hasler Hunting. Alliant Reloder-26 delivers the highest muzzle velocity at 3,143 fps; across all powders the maximum-charge window runs from 1,857 fps to 3,143 fps. Accurate 3100 gives the best case fill at 100 %, and 100 of the 100 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 1:11.0 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, Hodgdon H414 rank at the top here: for .300 Weath. Mag. with the .308 | 168gr | Hasler Hunting 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.