Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 150gr | Fox Classic Hunter 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-16, ReloadSwiss RS 70 and Alliant Reloder-26.
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>> | 84% | 55,622 psi | 87% | 3025 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,230 psi | 85% | 3038 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 51,401 psi | 81% | 3064 fps | 98.7% |
| Accurate 4064 | <<locked>> | 86% | 56,115 psi | 88% | 3081 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 57,406 psi | 90% | 3192 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 55,651 psi | 87% | 3117 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,043 psi | 89% | 3123 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,027 psi | 86% | 3173 fps | 97.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,536 psi | 89% | 3255 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 57,624 psi | 90% | 3143 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 54,259 psi | 85% | 3110 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,563 psi | 86% | 3196 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,173 psi | 88% | 3228 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,375 psi | 85% | 3159 fps | 97.1% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,474 psi | 81% | 3153 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,298 psi | 76% | 3087 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,235 psi | 66% | 2989 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,130 psi | 88% | 3301 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,898 psi | 88% | 3133 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 54,708 psi | 86% | 3104 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,474 psi | 81% | 3153 fps | 96.6% |
| Bofors RP7 | <<locked>> | 90% | 54,317 psi | 85% | 3081 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 86% | 55,419 psi | 87% | 3123 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 56,304 psi | 88% | 3192 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 90% | 56,057 psi | 88% | 3150 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 82% | 56,260 psi | 88% | 3127 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,824 psi | 86% | 3117 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,811 psi | 89% | 3166 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,782 psi | 89% | 3228 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,013 psi | 56% | 1965 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,493 psi | 90% | 3130 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,971 psi | 89% | 3107 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,362 psi | 88% | 3104 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,695 psi | 87% | 3084 fps | 98.6% |
| IMR 4350 | <<locked>> | 94% | 55,448 psi | 87% | 3117 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,202 psi | 88% | 3114 fps | 98.6% |
| IMR 4831 | <<locked>> | 94% | 54,114 psi | 85% | 3120 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 55,651 psi | 87% | 3143 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,883 psi | 88% | 3087 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 54,563 psi | 86% | 3038 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,260 psi | 88% | 3094 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,072 psi | 88% | 3110 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 57,392 psi | 90% | 3150 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,424 psi | 66% | 2894 fps | 96.8% |
| Norma 201 | <<locked>> | 84% | 57,638 psi | 90% | 3110 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,926 psi | 86% | 3054 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,087 psi | 89% | 3153 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,376 psi | 88% | 3173 fps | 97.2% |
| Norma MRPᴾ | <<locked>> | 100% | 54,723 psi | 86% | 3245 fps | 98.6% |
| Norma URP | <<locked>> | 94% | 56,173 psi | 88% | 3176 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 54,534 psi | 85% | 3123 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,042 psi | 86% | 3173 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,724 psi | 58% | 2014 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,317 psi | 87% | 3104 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,303 psi | 87% | 3186 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,622 psi | 87% | 3222 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,638 psi | 90% | 3219 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,304 psi | 88% | 3248 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 54,911 psi | 86% | 3058 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,795 psi | 86% | 3097 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,956 psi | 89% | 3146 fps | 96.3% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 57,217 psi | 90% | 3205 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 54,317 psi | 85% | 3081 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,072 psi | 88% | 3110 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,883 psi | 88% | 3087 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,260 psi | 88% | 3094 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,392 psi | 90% | 3150 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,797 psi | 89% | 3166 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,884 psi | 89% | 3117 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,259 psi | 85% | 3084 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,230 psi | 87% | 2989 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,231 psi | 88% | 2992 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,014 psi | 88% | 3058 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,710 psi | 89% | 3199 fps | 97.6% |
| Somchem S335 | <<locked>> | 82% | 54,911 psi | 86% | 2986 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,840 psi | 89% | 3107 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,824 psi | 86% | 3094 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 55,288 psi | 87% | 3176 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 53,954 psi | 85% | 3117 fps | 97.9% |
| Vihtavuori N133 | <<locked>> | 82% | 55,753 psi | 87% | 2972 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,085 psi | 86% | 3015 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,709 psi | 87% | 3035 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,391 psi | 88% | 3074 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,752 psi | 86% | 3114 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,893 psi | 78% | 3025 fps | 96.7% |
| Vihtavuori N540 | <<locked>> | 86% | 57,580 psi | 90% | 3081 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,580 psi | 90% | 3176 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,114 psi | 85% | 3173 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,723 psi | 86% | 3084 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,304 psi | 88% | 3192 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,555 psi | 68% | 3130 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 54,259 psi | 85% | 3091 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,346 psi | 85% | 3107 fps | 97% |
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% | 48,820 psi | 77% | 2920 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,355 psi | 74% | 2913 fps | 96.3% |
| Accurate 3100 | <<locked>> | 92% | 38,682 psi | 61% | 2812 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 46,253 psi | 72% | 2923 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,925 psi | 55% | 2743 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 80% | 52,214 psi | 82% | 3058 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,309 psi | 69% | 2894 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 48,153 psi | 75% | 3045 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,776 psi | 76% | 3117 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,469 psi | 70% | 2917 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,674 psi | 75% | 2992 fps | 99.5% |
| Alliant Reloder-16 | 63.2 gr | 80% | 34,505 psi | 54% | 2762 fps | 96.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,001 psi | 61% | 2900 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 47,529 psi | 74% | 3031 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 47,921 psi | 75% | 3084 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,398 psi | 45% | 2595 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,912 psi | 58% | 2851 fps | 95.5% |
| Alliant Reloder-26 | 76.7 gr | 88% | 35,491 psi | 56% | 2861 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,054 psi | 82% | 3068 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 44,585 psi | 70% | 2923 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 47,921 psi | 75% | 3084 fps | 95.7% |
| Bofors RP7 | <<locked>> | 84% | 44,947 psi | 70% | 2904 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 45,150 psi | 71% | 2933 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 84% | 42,728 psi | 67% | 2930 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 84% | 46,064 psi | 72% | 2959 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 52,779 psi | 83% | 3068 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,937 psi | 50% | 2648 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,472 psi | 78% | 3045 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 42,018 psi | 66% | 2940 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 42% | 1762 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,560 psi | 79% | 3015 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,272 psi | 83% | 3051 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,572 psi | 73% | 2933 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,892 psi | 77% | 2959 fps | 97.4% |
| IMR 4350 | <<locked>> | 86% | 42,946 psi | 67% | 2877 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,959 psi | 64% | 2815 fps | 95.1% |
| IMR 4831 | <<locked>> | 80% | 33,779 psi | 53% | 2700 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 48,921 psi | 77% | 3025 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 52,330 psi | 82% | 3031 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,242 psi | 80% | 2982 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,528 psi | 73% | 2930 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,334 psi | 60% | 2759 fps | 95.9% |
| Lovex S070 | <<locked>> | 84% | 41,655 psi | 65% | 2854 fps | 95.7% |
| Lovex S071 | <<locked>> | 96% | 37,028 psi | 58% | 2772 fps | 95% |
| Norma 201 | <<locked>> | 80% | 50,879 psi | 80% | 2999 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,503 psi | 81% | 3002 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,050 psi | 74% | 2979 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 49,110 psi | 77% | 3041 fps | 95.6% |
| Norma MRP | <<locked>> | 92% | 41,162 psi | 65% | 2966 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 35,056 psi | 55% | 2746 fps | 96% |
| Ramshot Big Game | <<locked>> | 80% | 47,340 psi | 74% | 2999 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 39,001 psi | 61% | 2851 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,282 psi | 43% | 1801 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,353 psi | 71% | 2917 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,517 psi | 81% | 3117 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,510 psi | 65% | 2969 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,824 psi | 55% | 2759 fps | 95.7% |
| ReloadSwiss RS 70 | 70.8 gr | 82% | 36,593 psi | 57% | 2831 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 48,225 psi | 76% | 2943 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,945 psi | 66% | 2867 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 53,345 psi | 84% | 3084 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 94% | 46,441 psi | 73% | 3009 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 84% | 44,947 psi | 70% | 2904 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,334 psi | 60% | 2759 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,330 psi | 82% | 3031 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,528 psi | 73% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 41,655 psi | 65% | 2854 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,265 psi | 68% | 2923 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,113 psi | 83% | 3054 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,720 psi | 79% | 3025 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,924 psi | 81% | 2940 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,714 psi | 69% | 2789 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,030 psi | 63% | 2756 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 46,006 psi | 72% | 3002 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 51,561 psi | 81% | 2933 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,924 psi | 83% | 3045 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,438 psi | 67% | 2867 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 31,415 psi | 49% | 2690 fps | 98.1% |
| Somchem S385 | <<locked>> | 92% | 44,092 psi | 69% | 2930 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 52,504 psi | 82% | 2923 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,631 psi | 76% | 2917 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,950 psi | 77% | 2930 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,495 psi | 63% | 2795 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 36,463 psi | 57% | 2749 fps | 96.5% |
| Vihtavuori N165 | <<locked>> | 96% | 43,584 psi | 68% | 2904 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 47,239 psi | 74% | 2917 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,940 psi | 56% | 2746 fps | 96.1% |
| Vihtavuori N555 | <<locked>> | 84% | 31,285 psi | 49% | 2680 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,824 psi | 56% | 2720 fps | 98.5% |
| Winchester 760 | <<locked>> | 84% | 42,917 psi | 67% | 2933 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,718 psi | 45% | 2687 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,662 psi | 79% | 3028 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 47,065 psi | 74% | 2979 fps | 95.2% |
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 93 powders for .300 Weath. Mag. loaded with the .308 | 150gr | Fox Classic Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 3,301 fps; across all powders the maximum-charge window runs from 1,965 fps to 3,301 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 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 150.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 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-16, ReloadSwiss RS 70, Alliant Reloder-26 rank at the top here: for .300 Weath. Mag. with the .308 | 150gr | Fox Classic Hunter they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.