Load Specifications
Load data in caliber .300 Weath. Mag. with .311 | 150gr | Norma Semi Soft Point bullet and 86 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% | 56,840 psi | 89% | 3041 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,317 psi | 85% | 3051 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,942 psi | 89% | 3159 fps | 99.5% |
| Accurate 4064 | <<locked>> | 84% | 57,363 psi | 90% | 3100 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,868 psi | 86% | 3156 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 86% | 57,145 psi | 90% | 3133 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,869 psi | 88% | 3199 fps | 97.6% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 57,377 psi | 90% | 3251 fps | 96.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,826 psi | 89% | 3264 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 55,927 psi | 88% | 3192 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,650 psi | 86% | 3104 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,853 psi | 86% | 3123 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,637 psi | 87% | 3215 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 57,087 psi | 89% | 3241 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,158 psi | 86% | 3179 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,536 psi | 89% | 3248 fps | 98% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,403 psi | 84% | 3173 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,369 psi | 73% | 3087 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,621 psi | 84% | 3255 fps | 99.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,648 psi | 81% | 3156 fps | 96.8% |
| Bofors RP3 | <<locked>> | 84% | 55,695 psi | 87% | 3123 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,536 psi | 89% | 3248 fps | 98% |
| Bofors RP7 | <<locked>> | 88% | 54,897 psi | 86% | 3100 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 84% | 55,811 psi | 87% | 3133 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 56,971 psi | 89% | 3209 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 88% | 56,478 psi | 89% | 3166 fps | 98% |
| Hodgdon H4831 | <<locked>> | 98% | 57,464 psi | 90% | 3189 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,956 psi | 88% | 3136 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 57,217 psi | 90% | 3176 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 57,711 psi | 90% | 3248 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,419 psi | 57% | 1991 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,479 psi | 90% | 3136 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,681 psi | 89% | 3117 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,535 psi | 87% | 3091 fps | 98.8% |
| IMR 4350 | <<locked>> | 92% | 56,043 psi | 88% | 3133 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,492 psi | 89% | 3133 fps | 98.9% |
| IMR 4831 | <<locked>> | 92% | 55,303 psi | 87% | 3146 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,289 psi | 88% | 3156 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,230 psi | 87% | 3117 fps | 95.8% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,650 psi | 86% | 3215 fps | 96.2% |
| Lovex S062 | <<locked>> | 84% | 56,840 psi | 89% | 3110 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,623 psi | 89% | 3127 fps | 99.6% |
| Lovex S070 | <<locked>> | 90% | 54,723 psi | 86% | 3114 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,166 psi | 74% | 2989 fps | 98.2% |
| Norma 203B | <<locked>> | 84% | 57,740 psi | 90% | 3169 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,087 psi | 89% | 3192 fps | 97.7% |
| Norma MRP | <<locked>> | 98% | 56,246 psi | 88% | 3271 fps | 99% |
| Norma URP | <<locked>> | 92% | 57,188 psi | 90% | 3196 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 54,897 psi | 86% | 3133 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,230 psi | 87% | 3235 fps | 96.7% |
| Ramshot Hunter | <<locked>> | 92% | 56,057 psi | 88% | 3192 fps | 99.4% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,516 psi | 78% | 3097 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,173 psi | 58% | 2041 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,796 psi | 87% | 3117 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,478 psi | 89% | 3235 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,882 psi | 86% | 3176 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 57,276 psi | 90% | 3271 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,614 psi | 71% | 3110 fps | 97.2% |
| Rottweil R 902 | <<locked>> | 82% | 55,274 psi | 87% | 3068 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,724 psi | 87% | 3117 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 57,508 psi | 90% | 3166 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 96% | 54,462 psi | 85% | 3166 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 88% | 54,897 psi | 86% | 3100 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,623 psi | 89% | 3127 fps | 99.6% |
| Shooters World Precision | <<locked>> | 84% | 56,840 psi | 89% | 3110 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,723 psi | 86% | 3114 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 57,377 psi | 90% | 3179 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,391 psi | 88% | 2999 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,463 psi | 88% | 3077 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 53,998 psi | 85% | 3159 fps | 97.5% |
| Somchem S355 | <<locked>> | 86% | 55,593 psi | 87% | 3114 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 56,811 psi | 89% | 3199 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,143 psi | 86% | 3140 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 82% | 55,651 psi | 87% | 3028 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,956 psi | 88% | 3041 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,956 psi | 89% | 3084 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,550 psi | 87% | 3133 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,636 psi | 86% | 3117 fps | 98% |
| Vihtavuori N540 | <<locked>> | 84% | 57,711 psi | 90% | 3084 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,795 psi | 86% | 3136 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 98% | 55,869 psi | 88% | 3202 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 56,420 psi | 88% | 3261 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,347 psi | 87% | 3097 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,174 psi | 90% | 3212 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,168 psi | 77% | 3238 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,492 psi | 87% | 3136 fps | 97.6% |
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% | 53,461 psi | 84% | 2992 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,821 psi | 80% | 2989 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 37,652 psi | 59% | 2785 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 50,633 psi | 79% | 2999 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,899 psi | 61% | 2841 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 47,398 psi | 74% | 2963 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 90% | 45,803 psi | 72% | 3002 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 98% | 53,664 psi | 84% | 3186 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,924 psi | 83% | 3196 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 45,948 psi | 72% | 3002 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,066 psi | 75% | 2989 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,459 psi | 81% | 3068 fps | 99.9% |
| Alliant Reloder-16 | 66.7 gr | 80% | 37,652 psi | 59% | 2848 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,859 psi | 67% | 2986 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 45,411 psi | 71% | 2992 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 46,093 psi | 72% | 3048 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 82% | 29,472 psi | 46% | 2628 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 92% | 35,781 psi | 56% | 2825 fps | 95.4% |
| Alliant Reloder-26 | 77.3 gr | 84% | 34,316 psi | 54% | 2825 fps | 95.7% |
| Bofors RP15 | <<locked>> | 96% | 45,266 psi | 71% | 3028 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 48,631 psi | 76% | 3002 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 46,093 psi | 72% | 3048 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 42,612 psi | 67% | 2858 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 48,834 psi | 77% | 3012 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 80% | 40,654 psi | 64% | 2884 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 80% | 43,569 psi | 68% | 2913 fps | 95% |
| Hodgdon H4831 | <<locked>> | 96% | 53,737 psi | 84% | 3127 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,128 psi | 55% | 2733 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,447 psi | 84% | 3114 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 42,815 psi | 67% | 2966 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,296 psi | 43% | 1785 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,954 psi | 85% | 3081 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,835 psi | 78% | 3002 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,156 psi | 82% | 3031 fps | 98.3% |
| IMR 4350 | <<locked>> | 84% | 43,511 psi | 68% | 2897 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,961 psi | 69% | 2890 fps | 96.4% |
| IMR 4831 | <<locked>> | 80% | 37,188 psi | 58% | 2785 fps | 97.3% |
| IMR 4895 | <<locked>> | 80% | 52,823 psi | 83% | 3100 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 51,866 psi | 81% | 3058 fps | 95% |
| IMR 7828 SSC | <<locked>> | 98% | 51,097 psi | 80% | 3146 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 50,227 psi | 79% | 3002 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,611 psi | 65% | 2838 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 39,784 psi | 62% | 2812 fps | 95.5% |
| Lovex S071 | <<locked>> | 92% | 36,318 psi | 57% | 2753 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 50,836 psi | 80% | 3054 fps | 100% |
| Norma 204 | <<locked>> | 86% | 46,456 psi | 73% | 2992 fps | 95.2% |
| Norma MRP | 80.4 gr | 90% | 42,395 psi | 66% | 2999 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 38,464 psi | 60% | 2831 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 80% | 51,271 psi | 80% | 3074 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 51,488 psi | 81% | 3166 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 37,376 psi | 59% | 2812 fps | 95.3% |
| Ramshot Magnum | <<locked>> | 96% | 42,714 psi | 67% | 2953 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,731 psi | 43% | 1827 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,863 psi | 77% | 2992 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,498 psi | 71% | 3048 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,537 psi | 60% | 2851 fps | 97.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,362 psi | 59% | 2858 fps | 96.5% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 42,351 psi | 66% | 3028 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 52,025 psi | 82% | 3015 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,745 psi | 72% | 2943 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 50,546 psi | 79% | 3041 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 90% | 44,541 psi | 70% | 2972 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 42,612 psi | 67% | 2858 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,611 psi | 65% | 2838 fps | 97.2% |
| Shooters World Precision | <<locked>> | 80% | 50,227 psi | 79% | 3002 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,784 psi | 62% | 2812 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,978 psi | 74% | 2999 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,731 psi | 73% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,712 psi | 64% | 2776 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 47,239 psi | 74% | 3031 fps | 95.9% |
| Somchem S355 | <<locked>> | 80% | 46,035 psi | 72% | 2943 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 34,998 psi | 55% | 2785 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 42,351 psi | 66% | 2894 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 52,257 psi | 82% | 2976 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,489 psi | 82% | 2989 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,947 psi | 69% | 2864 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,943 psi | 63% | 2835 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 44,628 psi | 70% | 2930 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 50,778 psi | 80% | 2979 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,305 psi | 62% | 2831 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 80% | 30,574 psi | 48% | 2654 fps | 95.2% |
| Vihtavuori N560 | <<locked>> | 96% | 52,562 psi | 82% | 3189 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,117 psi | 61% | 2799 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 40,828 psi | 64% | 2890 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 27,949 psi | 44% | 2661 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 92% | 44,831 psi | 70% | 2940 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 86 powders for .300 Weath. Mag. loaded with the .311 | 150gr | Norma Semi Soft Point. Norma MRP delivers the highest muzzle velocity at 3,271 fps; across all powders the maximum-charge window runs from 1,991 fps to 3,271 fps. Accurate 3100 gives the best case fill at 100 %, and 86 of the 86 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 0.311" calls for a 1:17.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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 .311 | 150gr | Norma Semi Soft Point 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.