Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 150gr | Frontier PH HPFB bullet and 90 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-26 and Hodgdon Superformance.
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% | 54,781 psi | 86% | 3005 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 56,057 psi | 88% | 3068 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,911 psi | 84% | 3104 fps | 99.1% |
| Accurate 4064 | <<locked>> | 84% | 55,187 psi | 86% | 3064 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,159 psi | 88% | 3169 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 82% | 57,377 psi | 90% | 3143 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 55,303 psi | 87% | 3094 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 57,203 psi | 90% | 3212 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,331 psi | 85% | 3215 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 57,203 psi | 90% | 3205 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,057 psi | 88% | 3120 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,275 psi | 88% | 3143 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,666 psi | 89% | 3228 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,302 psi | 85% | 3196 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,391 psi | 88% | 3192 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,621 psi | 84% | 3189 fps | 97.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,734 psi | 80% | 3127 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,106 psi | 69% | 3028 fps | 98.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,375 psi | 85% | 3268 fps | 99.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,081 psi | 77% | 3100 fps | 96% |
| Bofors RP3 | <<locked>> | 86% | 57,043 psi | 89% | 3136 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,621 psi | 84% | 3189 fps | 97.2% |
| Bofors RP7 | <<locked>> | 90% | 56,202 psi | 88% | 3114 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 86% | 57,479 psi | 90% | 3156 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 54,447 psi | 85% | 3156 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 88% | 54,375 psi | 85% | 3117 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,116 psi | 90% | 3146 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,795 psi | 86% | 3133 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,911 psi | 86% | 3196 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,289 psi | 57% | 1975 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,550 psi | 87% | 3097 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,737 psi | 86% | 3077 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,421 psi | 90% | 3110 fps | 98.9% |
| IMR 4350 | <<locked>> | 94% | 57,377 psi | 90% | 3150 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,491 psi | 85% | 3087 fps | 98.4% |
| IMR 4831 | <<locked>> | 94% | 56,405 psi | 88% | 3156 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 54,070 psi | 85% | 3114 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 56,144 psi | 88% | 3064 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,868 psi | 86% | 3071 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,592 psi | 86% | 3084 fps | 99.3% |
| Lovex S070 | <<locked>> | 92% | 55,811 psi | 87% | 3123 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,802 psi | 70% | 2940 fps | 97.5% |
| Norma 201 | <<locked>> | 82% | 56,217 psi | 88% | 3084 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,811 psi | 89% | 3081 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,564 psi | 87% | 3127 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,505 psi | 85% | 3136 fps | 96.9% |
| Norma MRPᴾ | <<locked>> | 100% | 57,203 psi | 90% | 3284 fps | 99% |
| Norma URP | <<locked>> | 92% | 54,578 psi | 86% | 3150 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 56,478 psi | 89% | 3153 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 57,188 psi | 90% | 3205 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,920 psi | 74% | 3035 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,869 psi | 58% | 2021 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,392 psi | 90% | 3136 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 57,290 psi | 90% | 3215 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 57,667 psi | 90% | 3248 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,014 psi | 88% | 3192 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,447 psi | 85% | 3215 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 84% | 56,840 psi | 89% | 3084 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 57,072 psi | 89% | 3133 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 55,071 psi | 86% | 3114 fps | 96% |
| Rottweil R 905 | <<locked>> | 98% | 55,637 psi | 87% | 3179 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 56,202 psi | 88% | 3114 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,592 psi | 86% | 3084 fps | 99.3% |
| Shooters World Precision | <<locked>> | 84% | 54,868 psi | 86% | 3071 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 55,811 psi | 87% | 3123 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 54,984 psi | 86% | 3136 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,883 psi | 88% | 3107 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,942 psi | 89% | 3012 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,505 psi | 85% | 2966 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,346 psi | 85% | 3031 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,143 psi | 86% | 3173 fps | 97.5% |
| Somchem S335 | <<locked>> | 82% | 56,695 psi | 89% | 3009 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 56,913 psi | 89% | 3127 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 57,696 psi | 90% | 3209 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,376 psi | 88% | 3153 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 82% | 57,464 psi | 90% | 2995 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 57,116 psi | 90% | 3041 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 57,450 psi | 90% | 3058 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,795 psi | 86% | 3045 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 56,927 psi | 89% | 3146 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,924 psi | 81% | 3061 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 84% | 55,767 psi | 87% | 3051 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 55,970 psi | 88% | 3150 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,579 psi | 89% | 3209 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 57,435 psi | 90% | 3268 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 56,652 psi | 89% | 3110 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,665 psi | 86% | 3163 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,832 psi | 72% | 3176 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,188 psi | 88% | 3120 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,579 psi | 89% | 3146 fps | 97.5% |
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% | 51,387 psi | 81% | 2956 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 49,153 psi | 77% | 2949 fps | 96.8% |
| Accurate 3100 | <<locked>> | 90% | 38,247 psi | 60% | 2795 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 48,646 psi | 76% | 2959 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,970 psi | 58% | 2789 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 80% | 53,969 psi | 85% | 3087 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,890 psi | 72% | 2923 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 92% | 46,746 psi | 73% | 3015 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,691 psi | 79% | 3150 fps | 99.8% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 47,021 psi | 74% | 3015 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,282 psi | 73% | 2949 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,501 psi | 78% | 3022 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,085 psi | 57% | 2802 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,872 psi | 64% | 2940 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 92% | 46,441 psi | 73% | 3009 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 96% | 46,818 psi | 73% | 3058 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 82% | 28,210 psi | 44% | 2585 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 94% | 36,376 psi | 57% | 2835 fps | 95.4% |
| Alliant Reloder-26 | 76 gr | 86% | 34,853 psi | 55% | 2838 fps | 95.7% |
| Bofors RP15 | <<locked>> | 98% | 45,963 psi | 72% | 3038 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 46,630 psi | 73% | 2959 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 46,818 psi | 73% | 3058 fps | 95.5% |
| Bofors RP7 | <<locked>> | 82% | 43,787 psi | 69% | 2874 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 46,992 psi | 74% | 2969 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 82% | 41,684 psi | 65% | 2904 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 82% | 44,744 psi | 70% | 2930 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,489 psi | 52% | 2687 fps | 97.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,285 psi | 80% | 3074 fps | 100% |
| Hodgdon Superformance | 76.6 gr | 84% | 43,932 psi | 69% | 2982 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,151 psi | 43% | 1768 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,185 psi | 82% | 3041 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,254 psi | 76% | 2963 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,415 psi | 79% | 2989 fps | 97.8% |
| IMR 4350 | <<locked>> | 84% | 41,785 psi | 65% | 2848 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,467 psi | 67% | 2848 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 35,607 psi | 56% | 2740 fps | 96.6% |
| IMR 4895 | <<locked>> | 80% | 50,763 psi | 80% | 3058 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,823 psi | 83% | 3009 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,443 psi | 76% | 2959 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,074 psi | 63% | 2795 fps | 96.5% |
| Lovex S070 | <<locked>> | 82% | 40,770 psi | 64% | 2828 fps | 95.5% |
| Lovex S071 | <<locked>> | 94% | 36,796 psi | 58% | 2762 fps | 95% |
| Norma 201 | <<locked>> | 80% | 52,823 psi | 83% | 3028 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,345 psi | 84% | 3025 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,849 psi | 77% | 3009 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 47,500 psi | 74% | 3009 fps | 95.2% |
| Norma MRP | <<locked>> | 92% | 43,004 psi | 67% | 3009 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 36,796 psi | 58% | 2785 fps | 96.7% |
| Ramshot Big Game | <<locked>> | 80% | 49,240 psi | 77% | 3031 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 38,130 psi | 60% | 2828 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 98% | 43,656 psi | 68% | 2969 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,586 psi | 43% | 1811 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,992 psi | 74% | 2946 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,417 psi | 84% | 3150 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,410 psi | 68% | 3002 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,666 psi | 57% | 2802 fps | 96.5% |
| ReloadSwiss RS 70 | 70.1 gr | 80% | 35,766 psi | 56% | 2805 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 50,154 psi | 79% | 2976 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,932 psi | 69% | 2900 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 94% | 51,677 psi | 81% | 3054 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 92% | 45,469 psi | 71% | 2986 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 82% | 43,787 psi | 69% | 2874 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,074 psi | 63% | 2795 fps | 96.5% |
| Shooters World Precision | <<locked>> | 80% | 48,443 psi | 76% | 2959 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 40,770 psi | 64% | 2828 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,991 psi | 71% | 2956 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,373 psi | 82% | 3051 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,417 psi | 84% | 2959 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,179 psi | 71% | 2815 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,887 psi | 66% | 2795 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 48,153 psi | 75% | 3045 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 53,345 psi | 84% | 2959 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,295 psi | 69% | 2904 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 33,170 psi | 52% | 2736 fps | 98.8% |
| Somchem S385 | <<locked>> | 90% | 43,163 psi | 68% | 2907 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 53,969 psi | 85% | 2946 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,386 psi | 79% | 2943 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,705 psi | 79% | 2956 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,264 psi | 66% | 2828 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 38,174 psi | 60% | 2789 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 96% | 45,411 psi | 71% | 2940 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 48,965 psi | 77% | 2943 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,666 psi | 59% | 2785 fps | 96.8% |
| Vihtavuori N555 | <<locked>> | 82% | 31,053 psi | 49% | 2667 fps | 95.2% |
| Vihtavuori N560 | <<locked>> | 98% | 53,621 psi | 84% | 3202 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,449 psi | 59% | 2756 fps | 99% |
| Winchester 760 | <<locked>> | 82% | 41,858 psi | 66% | 2907 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 86% | 28,427 psi | 45% | 2674 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,620 psi | 82% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,876 psi | 72% | 2953 fps | 95% |
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 90 powders for .300 Weath. Mag. loaded with the .308 | 150gr | Frontier PH HPFB. Norma MRP delivers the highest muzzle velocity at 3,284 fps; across all powders the maximum-charge window runs from 1,975 fps to 3,284 fps. Accurate 3100 gives the best case fill at 100 %, and 90 of the 90 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:13.0 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. ReloadSwiss RS 70, Alliant Reloder-26, Hodgdon Superformance rank at the top here: for .300 Weath. Mag. with the .308 | 150gr | Frontier PH HPFB 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.