Load Specifications
Load data in caliber .300 Weath. Mag. with .308 | 150gr | Woodleigh PP SN bullet and 87 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 Alliant Reloder-16.
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% | 56,449 psi | 88% | 3035 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,390 psi | 87% | 3054 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,260 psi | 88% | 3146 fps | 99.5% |
| Accurate 4064 | <<locked>> | 84% | 57,000 psi | 89% | 3094 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,302 psi | 85% | 3143 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 86% | 56,826 psi | 89% | 3127 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,376 psi | 87% | 3186 fps | 97.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,971 psi | 89% | 3241 fps | 96.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,507 psi | 89% | 3255 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,331 psi | 85% | 3097 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,317 psi | 85% | 3114 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,071 psi | 86% | 3209 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,507 psi | 89% | 3235 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,723 psi | 86% | 3173 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,086 psi | 88% | 3238 fps | 97.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,881 psi | 83% | 3163 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,977 psi | 72% | 3077 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 57,261 psi | 90% | 3317 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,227 psi | 80% | 3146 fps | 96.7% |
| Bofors RP3 | <<locked>> | 84% | 55,129 psi | 86% | 3114 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,086 psi | 88% | 3238 fps | 97.9% |
| Bofors RP7 | <<locked>> | 88% | 54,592 psi | 86% | 3094 fps | 98.2% |
| Hodgdon H380 | <<locked>> | 84% | 55,463 psi | 87% | 3127 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 56,478 psi | 89% | 3199 fps | 99% |
| Hodgdon H4350 | <<locked>> | 88% | 56,144 psi | 88% | 3159 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 98% | 57,058 psi | 89% | 3182 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,390 psi | 87% | 3127 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,637 psi | 89% | 3166 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 57,043 psi | 89% | 3235 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,405 psi | 57% | 1991 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,145 psi | 90% | 3130 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,144 psi | 88% | 3107 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,216 psi | 87% | 3084 fps | 98.7% |
| IMR 4350 | <<locked>> | 92% | 55,593 psi | 87% | 3123 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,970 psi | 88% | 3120 fps | 98.8% |
| IMR 4831 | <<locked>> | 92% | 54,795 psi | 86% | 3136 fps | 99.9% |
| IMR 4895 | <<locked>> | 82% | 55,738 psi | 87% | 3146 fps | 100% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,259 psi | 85% | 3205 fps | 96% |
| Lovex S060 | <<locked>> | 82% | 57,696 psi | 90% | 3094 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,507 psi | 89% | 3100 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,333 psi | 88% | 3120 fps | 99.6% |
| Lovex S070 | <<locked>> | 90% | 54,259 psi | 85% | 3107 fps | 98.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,688 psi | 73% | 2979 fps | 98.1% |
| Norma 201 | <<locked>> | 82% | 57,696 psi | 90% | 3114 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,188 psi | 90% | 3156 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,608 psi | 89% | 3179 fps | 97.6% |
| Norma MRP | <<locked>> | 98% | 55,782 psi | 87% | 3264 fps | 98.9% |
| Norma URP | <<locked>> | 92% | 56,710 psi | 89% | 3189 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,563 psi | 86% | 3127 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,824 psi | 86% | 3228 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 92% | 55,579 psi | 87% | 3186 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,965 psi | 77% | 3084 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,159 psi | 58% | 2037 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,317 psi | 87% | 3110 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 55,869 psi | 88% | 3225 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,375 psi | 85% | 3166 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,565 psi | 89% | 3258 fps | 99.9% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,165 psi | 71% | 3097 fps | 97% |
| Rottweil R 902 | <<locked>> | 82% | 54,911 psi | 86% | 3061 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,187 psi | 86% | 3107 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 57,058 psi | 89% | 3156 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 96% | 53,983 psi | 85% | 3159 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 88% | 54,592 psi | 86% | 3094 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,333 psi | 88% | 3120 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 56,507 psi | 89% | 3100 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,259 psi | 85% | 3107 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,855 psi | 89% | 3169 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,624 psi | 90% | 3143 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,072 psi | 88% | 2992 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,985 psi | 88% | 3068 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,276 psi | 90% | 3215 fps | 98% |
| Somchem S355 | <<locked>> | 86% | 55,230 psi | 87% | 3107 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 56,275 psi | 88% | 3192 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,708 psi | 86% | 3133 fps | 98.3% |
| Vihtavuori N135 | <<locked>> | 82% | 55,448 psi | 87% | 3025 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,608 psi | 87% | 3038 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,449 psi | 88% | 3077 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,042 psi | 86% | 3123 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,041 psi | 85% | 3104 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 84% | 57,406 psi | 90% | 3081 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,331 psi | 85% | 3127 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 98% | 55,361 psi | 87% | 3192 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,999 psi | 88% | 3251 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,926 psi | 86% | 3091 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,681 psi | 89% | 3202 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,312 psi | 76% | 3225 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,810 psi | 86% | 3123 fps | 97.4% |
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% | 53,040 psi | 83% | 2986 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,484 psi | 71% | 2874 fps | 96.1% |
| Accurate 3100 | <<locked>> | 88% | 37,188 psi | 58% | 2776 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 50,241 psi | 79% | 2989 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,377 psi | 60% | 2828 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 80% | 47,239 psi | 74% | 2956 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 90% | 45,368 psi | 71% | 2992 fps | 95% |
| ADI AR 2213 | <<locked>> | 98% | 53,084 psi | 83% | 3173 fps | 95.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,562 psi | 82% | 3189 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,718 psi | 75% | 2982 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,908 psi | 80% | 3058 fps | 99.9% |
| Alliant Reloder-16 | 66.2 gr | 80% | 37,333 psi | 59% | 2838 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,511 psi | 67% | 2976 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 90% | 44,991 psi | 71% | 2982 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 94% | 45,658 psi | 72% | 3038 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 82% | 29,225 psi | 46% | 2621 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 92% | 35,433 psi | 56% | 2815 fps | 95.2% |
| Alliant Reloder-26 | 76.7 gr | 84% | 33,953 psi | 53% | 2815 fps | 95.5% |
| Bofors RP15 | <<locked>> | 98% | 47,877 psi | 75% | 3084 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 48,298 psi | 76% | 2995 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 45,658 psi | 72% | 3038 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 42,337 psi | 66% | 2851 fps | 95.4% |
| Hodgdon H380 | <<locked>> | 80% | 48,530 psi | 76% | 3005 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 40,364 psi | 63% | 2877 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 82% | 46,166 psi | 72% | 2966 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 96% | 53,316 psi | 84% | 3117 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,795 psi | 55% | 2723 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,113 psi | 83% | 3107 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 42,380 psi | 66% | 2953 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,224 psi | 43% | 1781 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,621 psi | 84% | 3071 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,690 psi | 78% | 2995 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,837 psi | 81% | 3025 fps | 98.2% |
| IMR 4350 | <<locked>> | 84% | 43,265 psi | 68% | 2890 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,656 psi | 68% | 2881 fps | 96.3% |
| IMR 4831 | <<locked>> | 80% | 36,883 psi | 58% | 2776 fps | 97.2% |
| IMR 4895 | <<locked>> | 80% | 52,257 psi | 82% | 3087 fps | 100% |
| IMR 7828 SSC | <<locked>> | 98% | 50,676 psi | 79% | 3140 fps | 95.1% |
| Lovex S060 | <<locked>> | 80% | 54,172 psi | 85% | 3038 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,908 psi | 78% | 2992 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,307 psi | 65% | 2831 fps | 97.1% |
| Lovex S070 | <<locked>> | 80% | 39,494 psi | 62% | 2805 fps | 95.3% |
| Lovex S071 | <<locked>> | 94% | 38,421 psi | 60% | 2805 fps | 95.9% |
| Norma 201 | <<locked>> | 80% | 54,302 psi | 85% | 3061 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,285 psi | 79% | 3041 fps | 100% |
| Norma 204 | <<locked>> | 86% | 45,992 psi | 72% | 2982 fps | 95.1% |
| Norma MRP | 79.8 gr | 90% | 41,974 psi | 66% | 2989 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 38,130 psi | 60% | 2822 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 80% | 50,952 psi | 80% | 3068 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 50,879 psi | 80% | 3153 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 37,101 psi | 58% | 2805 fps | 95.2% |
| Ramshot Magnum | <<locked>> | 96% | 42,337 psi | 66% | 2946 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,659 psi | 43% | 1821 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,588 psi | 76% | 2986 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,165 psi | 71% | 3041 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,261 psi | 60% | 2844 fps | 97.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,086 psi | 58% | 2848 fps | 96.4% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 42,076 psi | 66% | 3018 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 51,677 psi | 81% | 3009 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,382 psi | 71% | 2936 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 50,067 psi | 78% | 3031 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 90% | 44,280 psi | 69% | 2969 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 42,337 psi | 66% | 2851 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,307 psi | 65% | 2831 fps | 97.1% |
| Shooters World Precision | <<locked>> | 80% | 49,908 psi | 78% | 2992 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,494 psi | 62% | 2805 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,673 psi | 73% | 2992 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 54,114 psi | 85% | 3087 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,572 psi | 73% | 2844 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,408 psi | 63% | 2769 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 46,760 psi | 73% | 3022 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 45,687 psi | 72% | 2936 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 34,679 psi | 54% | 2776 fps | 99.2% |
| Somchem S385 | <<locked>> | 88% | 42,090 psi | 66% | 2887 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 52,054 psi | 82% | 2972 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,141 psi | 82% | 2982 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,613 psi | 68% | 2858 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,494 psi | 62% | 2825 fps | 97.7% |
| Vihtavuori N165 | <<locked>> | 94% | 44,208 psi | 69% | 2920 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 50,444 psi | 79% | 2972 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,030 psi | 61% | 2822 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 80% | 30,255 psi | 47% | 2644 fps | 95% |
| Vihtavuori N560 | <<locked>> | 96% | 52,170 psi | 82% | 3182 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,711 psi | 61% | 2789 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 40,480 psi | 63% | 2881 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 84% | 27,746 psi | 43% | 2654 fps | 95.7% |
| Winchester Supreme 780 | <<locked>> | 94% | 47,747 psi | 75% | 2995 fps | 95.8% |
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 97 powders for .300 Weath. Mag. loaded with the .308 | 150gr | Woodleigh PP SN. Alliant Reloder-26 delivers the highest muzzle velocity at 3,317 fps; across all powders the maximum-charge window runs from 1,991 fps to 3,317 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 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 1:15.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, 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. Alliant Reloder-26, Norma MRP, Alliant Reloder-16 rank at the top here: for .300 Weath. Mag. with the .308 | 150gr | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, 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.