Load Specifications
Load data in caliber .240 Weath. Mag. with .243 | 105gr | Remington SP Extended-Range bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Ramshot Grand.
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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 56,014 psi | 88% | 3015 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 57,653 psi | 90% | 3058 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 57,392 psi | 90% | 3166 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 94% | 54,404 psi | 85% | 3100 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 82% | 55,100 psi | 86% | 2963 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 54,665 psi | 86% | 3051 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 96% | 56,086 psi | 88% | 3110 fps | 98.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,876 psi | 73% | 2930 fps | 96.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,727 psi | 65% | 2881 fps | 98% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,665 psi | 86% | 3041 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,449 psi | 88% | 2989 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,491 psi | 85% | 3054 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,608 psi | 87% | 3071 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,638 psi | 90% | 3094 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,912 psi | 88% | 3107 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,695 psi | 89% | 3077 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,547 psi | 82% | 3077 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 57,740 psi | 90% | 3179 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,752 psi | 86% | 3084 fps | 98.8% |
| Bofors RP3 | <<locked>> | 82% | 57,537 psi | 90% | 3005 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,573 psi | 76% | 3002 fps | 97.2% |
| Bofors RP5 | <<locked>> | 96% | 55,912 psi | 88% | 3107 fps | 99% |
| Bofors RP7 | <<locked>> | 86% | 56,391 psi | 88% | 2999 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,634 psi | 81% | 3025 fps | 98% |
| Hodgdon H380 | <<locked>> | 82% | 57,609 psi | 90% | 3028 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 55,506 psi | 87% | 3051 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 84% | 54,737 psi | 86% | 3009 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 94% | 55,985 psi | 88% | 3048 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,969 psi | 86% | 3028 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 55,013 psi | 86% | 2982 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,503 psi | 81% | 3136 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 86% | 56,188 psi | 88% | 3091 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,028 psi | 58% | 1909 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,418 psi | 85% | 2982 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,592 psi | 86% | 2972 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 57,653 psi | 90% | 3045 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 57,334 psi | 90% | 3035 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 98% | 57,421 psi | 90% | 3143 fps | 98.4% |
| Lovex S065 | <<locked>> | 86% | 55,100 psi | 86% | 2972 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,753 psi | 89% | 3022 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,272 psi | 83% | 2972 fps | 99.8% |
| Norma 204 | <<locked>> | 88% | 55,245 psi | 87% | 3035 fps | 98.7% |
| Norma MRP | <<locked>> | 94% | 55,492 psi | 87% | 3127 fps | 99.7% |
| Norma URP | <<locked>> | 88% | 56,028 psi | 88% | 3038 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,244 psi | 85% | 3100 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 88% | 54,665 psi | 86% | 3038 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,768 psi | 89% | 3100 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,666 psi | 59% | 1952 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 57,246 psi | 90% | 3012 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 55,187 psi | 86% | 3061 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,696 psi | 90% | 3081 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,854 psi | 88% | 3107 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,025 psi | 82% | 3136 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 84% | 57,725 psi | 90% | 3005 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,796 psi | 87% | 3015 fps | 98% |
| Rottweil R 905 | <<locked>> | 94% | 57,072 psi | 89% | 3084 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 86% | 56,391 psi | 88% | 2999 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 55,100 psi | 86% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,753 psi | 89% | 3022 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,680 psi | 87% | 3012 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,566 psi | 90% | 2874 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,389 psi | 85% | 2920 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,623 psi | 89% | 3077 fps | 99.1% |
| Somchem S355 | <<locked>> | 84% | 57,319 psi | 90% | 2999 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,711 psi | 90% | 3012 fps | 97.7% |
| Somchem S365 | <<locked>> | 90% | 56,144 psi | 88% | 3041 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,172 psi | 85% | 2999 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 84% | 55,071 psi | 86% | 2920 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,201 psi | 85% | 2976 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 57,290 psi | 90% | 3035 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 88% | 56,898 psi | 89% | 3035 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 55,448 psi | 87% | 3054 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,419 psi | 87% | 3117 fps | 97.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 55,347 psi | 87% | 3094 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,464 psi | 90% | 2989 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,869 psi | 88% | 3058 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,940 psi | 85% | 3159 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,041 psi | 85% | 2992 fps | 98.6% |
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 3100 | <<locked>> | 80% | 32,445 psi | 51% | 2543 fps | 95.4% |
| Accurate 4350 | <<locked>> | 80% | 43,627 psi | 68% | 2818 fps | 99.6% |
| Accurate High Country | <<locked>> | 86% | 43,395 psi | 68% | 2897 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 92% | 50,850 psi | 80% | 3035 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 51,953 psi | 81% | 2913 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 41,930 psi | 66% | 2805 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 90% | 45,716 psi | 72% | 2913 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 98% | 43,772 psi | 69% | 2861 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 96% | 36,622 psi | 57% | 2749 fps | 96% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 39,392 psi | 62% | 2740 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,881 psi | 83% | 2933 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,916 psi | 66% | 2825 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,486 psi | 76% | 2956 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 41,727 psi | 65% | 2795 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 86% | 39,798 psi | 62% | 2792 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,212 psi | 49% | 2575 fps | 98.5% |
| Alliant Reloder-25 | <<locked>> | 84% | 31,140 psi | 49% | 2589 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,939 psi | 53% | 2707 fps | 97.5% |
| Bofors RP15 | <<locked>> | 88% | 39,537 psi | 62% | 2782 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 53,853 psi | 84% | 2953 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 42,264 psi | 66% | 2874 fps | 95.3% |
| Bofors RP5 | <<locked>> | 86% | 39,798 psi | 62% | 2792 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 46,659 psi | 73% | 2825 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 94% | 41,974 psi | 66% | 2825 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 53,969 psi | 85% | 2969 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 45,542 psi | 71% | 2871 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 80% | 48,066 psi | 75% | 2887 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 90% | 48,907 psi | 77% | 2920 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 90% | 47,993 psi | 75% | 2904 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,494 psi | 62% | 2710 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 39,392 psi | 62% | 2861 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 44,962 psi | 70% | 2890 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,615 psi | 43% | 1706 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,264 psi | 66% | 2753 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,066 psi | 75% | 2854 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 41,843 psi | 66% | 2769 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 88% | 47,297 psi | 74% | 2858 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 90% | 43,918 psi | 69% | 2887 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 45,716 psi | 72% | 2805 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 44,077 psi | 69% | 2789 fps | 98.2% |
| Lovex S071 | <<locked>> | 84% | 31,821 psi | 50% | 2526 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 42,221 psi | 66% | 2785 fps | 95.8% |
| Norma MRP | 46.4 gr | 82% | 36,434 psi | 57% | 2736 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 43,105 psi | 68% | 2808 fps | 99.5% |
| Ramshot Grand | 50.5 gr | 90% | 43,845 psi | 69% | 2897 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 41,989 psi | 66% | 2802 fps | 98.3% |
| Ramshot Magnum | <<locked>> | 90% | 39,131 psi | 61% | 2766 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,239 psi | 44% | 1749 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,722 psi | 84% | 2953 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,459 psi | 81% | 3005 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,627 psi | 68% | 2838 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,018 psi | 66% | 2854 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 36,347 psi | 57% | 2776 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 50,850 psi | 80% | 2900 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 43,352 psi | 68% | 2782 fps | 95% |
| Rottweil R 905 | <<locked>> | 84% | 41,118 psi | 64% | 2782 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 46,659 psi | 73% | 2825 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,716 psi | 72% | 2805 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 80% | 44,077 psi | 69% | 2789 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 52,170 psi | 82% | 2956 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,053 psi | 80% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,628 psi | 70% | 2746 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 40,756 psi | 64% | 2776 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 50,633 psi | 79% | 2894 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 47,152 psi | 74% | 2828 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 39,856 psi | 62% | 2766 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,434 psi | 57% | 2641 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 48,544 psi | 76% | 2818 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,324 psi | 69% | 2802 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 38,522 psi | 60% | 2684 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 43,932 psi | 69% | 2808 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 35,012 psi | 55% | 2657 fps | 98.5% |
| Vihtavuori N560 | 49.8 gr | 88% | 45,237 psi | 71% | 2923 fps | 95% |
| Vihtavuori N565 | <<locked>> | 94% | 44,904 psi | 70% | 2900 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,410 psi | 68% | 2766 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,542 psi | 71% | 2871 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,775 psi | 44% | 2569 fps | 98.2% |
| Winchester Supreme 780 | <<locked>> | 86% | 41,046 psi | 64% | 2746 fps | 95.6% |
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 78 powders for .240 Weath. Mag. loaded with the .243 | 105gr | Remington SP Extended-Range. Alliant Reloder-26 delivers the highest muzzle velocity at 3,179 fps; across all powders the maximum-charge window runs from 1,909 fps to 3,179 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 105.0 gr projectile in 0.243" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Norma MRP, Vihtavuori N560, Ramshot Grand rank at the top here: for .240 Weath. Mag. with the .243 | 105gr | Remington SP Extended-Range 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.