Load Specifications
Load data in caliber .240 Weath. Mag. with .243 | 107gr | Nosler Custom Competition bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country and Norma MRP.
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 2700 | <<locked>> | 82% | 57,638 psi | 90% | 2946 fps | 99.4% |
| Accurate 3100 | <<locked>> | 98% | 57,377 psi | 90% | 3002 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,521 psi | 87% | 2992 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 55,114 psi | 86% | 3094 fps | 98% |
| Accurate MAGPRO | <<locked>> | 96% | 55,854 psi | 88% | 3091 fps | 97% |
| ADI AR 2208 | <<locked>> | 84% | 56,971 psi | 89% | 2956 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,130 psi | 88% | 3041 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 98% | 57,711 psi | 90% | 3100 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,045 psi | 63% | 2812 fps | 97.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,478 psi | 89% | 3041 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,795 psi | 86% | 2930 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,159 psi | 88% | 3048 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,464 psi | 90% | 3068 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,738 psi | 87% | 3028 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,276 psi | 90% | 3094 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,273 psi | 85% | 3012 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,256 psi | 79% | 3009 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,607 psi | 86% | 3100 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,014 psi | 88% | 3074 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 55,593 psi | 87% | 2943 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,282 psi | 73% | 2930 fps | 96.5% |
| Bofors RP5 | <<locked>> | 98% | 57,276 psi | 90% | 3094 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 54,766 psi | 86% | 2936 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,676 psi | 78% | 2953 fps | 97.5% |
| Hodgdon H380 | <<locked>> | 82% | 55,825 psi | 87% | 2966 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,421 psi | 90% | 3048 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 56,434 psi | 88% | 3002 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 94% | 53,882 psi | 84% | 2976 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,782 psi | 89% | 3022 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,507 psi | 89% | 2969 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,371 psi | 77% | 3061 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 86% | 53,896 psi | 84% | 3022 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,767 psi | 58% | 1870 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,391 psi | 88% | 2936 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,318 psi | 88% | 2976 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,289 psi | 88% | 2963 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 55,753 psi | 87% | 2982 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,245 psi | 87% | 2966 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 98% | 55,347 psi | 87% | 3074 fps | 97.9% |
| Lovex S062 | <<locked>> | 82% | 56,797 psi | 89% | 2930 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,811 psi | 89% | 2963 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,868 psi | 86% | 2956 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,329 psi | 80% | 2910 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 57,029 psi | 89% | 3028 fps | 98.8% |
| Norma MRP | <<locked>> | 96% | 57,246 psi | 90% | 3123 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 57,537 psi | 90% | 3028 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,898 psi | 88% | 3094 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 56,275 psi | 88% | 3031 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,867 psi | 84% | 3022 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,695 psi | 59% | 1916 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,666 psi | 87% | 2953 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,869 psi | 89% | 3054 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,535 psi | 87% | 3018 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,392 psi | 90% | 3100 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,559 psi | 78% | 3054 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 84% | 55,767 psi | 87% | 2943 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,711 psi | 90% | 3012 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 94% | 55,071 psi | 86% | 3015 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 86% | 54,766 psi | 86% | 2936 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,811 psi | 89% | 2963 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 56,797 psi | 89% | 2930 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,868 psi | 86% | 2956 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,348 psi | 90% | 3002 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,347 psi | 88% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,304 psi | 88% | 2913 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,607 psi | 86% | 3012 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 55,796 psi | 87% | 2940 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,579 psi | 87% | 2943 fps | 97.2% |
| Somchem S365 | <<locked>> | 92% | 57,653 psi | 90% | 3031 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,666 psi | 87% | 2992 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 86% | 57,116 psi | 90% | 2913 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,912 psi | 88% | 2969 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,926 psi | 86% | 2963 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 57,580 psi | 90% | 2907 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 55,129 psi | 86% | 2972 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,739 psi | 89% | 3041 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,159 psi | 90% | 3114 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,750 psi | 83% | 3022 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,288 psi | 87% | 2927 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,421 psi | 90% | 3048 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,201 psi | 87% | 3153 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,550 psi | 87% | 2982 fps | 98.8% |
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 2700 | <<locked>> | 80% | 53,925 psi | 85% | 2887 fps | 99% |
| Accurate 3100 | <<locked>> | 82% | 33,504 psi | 53% | 2546 fps | 95.8% |
| Accurate 4350 | <<locked>> | 80% | 42,003 psi | 66% | 2756 fps | 99.4% |
| Accurate High Country | 47.5 gr | 88% | 44,773 psi | 70% | 2900 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 92% | 48,457 psi | 76% | 2959 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 50,357 psi | 79% | 2851 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,451 psi | 63% | 2740 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 92% | 47,195 psi | 74% | 2910 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 96% | 35,157 psi | 55% | 2680 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 40,640 psi | 64% | 2740 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,517 psi | 81% | 2877 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,596 psi | 64% | 2766 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,615 psi | 73% | 2894 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,234 psi | 63% | 2733 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,944 psi | 64% | 2789 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,921 psi | 47% | 2513 fps | 98% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,908 psi | 50% | 2585 fps | 95.7% |
| Alliant Reloder-26 | 44.4 gr | 80% | 32,329 psi | 51% | 2638 fps | 96.8% |
| Bofors RP15 | <<locked>> | 90% | 40,393 psi | 63% | 2776 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 52,185 psi | 82% | 2894 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 43,033 psi | 67% | 2864 fps | 95.6% |
| Bofors RP5 | <<locked>> | 88% | 40,944 psi | 64% | 2789 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 45,484 psi | 71% | 2769 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 96% | 43,265 psi | 68% | 2822 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 52,141 psi | 82% | 2904 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,845 psi | 69% | 2805 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 46,644 psi | 73% | 2825 fps | 97.4% |
| Hodgdon H4831 | <<locked>> | 90% | 47,050 psi | 74% | 2854 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 49,545 psi | 78% | 2900 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,145 psi | 60% | 2651 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 94% | 40,306 psi | 63% | 2854 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 42,960 psi | 67% | 2822 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,456 psi | 43% | 1670 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,997 psi | 83% | 2884 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,901 psi | 64% | 2690 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,659 psi | 73% | 2792 fps | 98.4% |
| IMR 4831 | <<locked>> | 80% | 40,335 psi | 63% | 2707 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,730 psi | 72% | 2792 fps | 95% |
| IMR 7828 SSC | <<locked>> | 92% | 45,237 psi | 71% | 2884 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 53,403 psi | 84% | 2881 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,266 psi | 69% | 2743 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 42,670 psi | 67% | 2730 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 32,605 psi | 51% | 2523 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 40,683 psi | 64% | 2723 fps | 95.2% |
| Norma MRP | 45.3 gr | 84% | 37,376 psi | 59% | 2736 fps | 96% |
| Norma URP | <<locked>> | 80% | 41,582 psi | 65% | 2749 fps | 99.3% |
| Ramshot Grand | <<locked>> | 92% | 45,034 psi | 71% | 2890 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 40,408 psi | 63% | 2740 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 37,362 psi | 59% | 2697 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,108 psi | 44% | 1713 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,054 psi | 82% | 2890 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,472 psi | 78% | 2943 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,930 psi | 66% | 2776 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,248 psi | 63% | 2785 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 37,333 psi | 59% | 2772 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 49,168 psi | 77% | 2838 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,614 psi | 70% | 2779 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 39,523 psi | 62% | 2717 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 45,484 psi | 71% | 2769 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,266 psi | 69% | 2743 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 53,403 psi | 84% | 2881 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,670 psi | 67% | 2730 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,415 psi | 79% | 2894 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,676 psi | 78% | 2726 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,323 psi | 68% | 2687 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 39,175 psi | 61% | 2710 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 48,994 psi | 77% | 2831 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,660 psi | 76% | 2822 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 38,203 psi | 60% | 2703 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,449 psi | 59% | 2638 fps | 95.5% |
| Vihtavuori N150 | <<locked>> | 80% | 47,007 psi | 74% | 2759 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,830 psi | 67% | 2743 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 39,668 psi | 62% | 2684 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 80% | 53,896 psi | 84% | 2854 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,293 psi | 66% | 2746 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 33,489 psi | 52% | 2595 fps | 98% |
| Vihtavuori N560 | <<locked>> | 90% | 46,253 psi | 72% | 2917 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 96% | 46,079 psi | 72% | 2897 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,003 psi | 66% | 2710 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,121 psi | 69% | 2812 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,629 psi | 42% | 2503 fps | 97.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,479 psi | 62% | 2684 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 82 powders for .240 Weath. Mag. loaded with the .243 | 107gr | Nosler Custom Competition. Winchester StaBALL HD delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,153 fps. ADI AR 2225 gives the best case fill at 100 %, and 82 of the 82 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 107.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP15 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, Accurate High Country, Norma MRP rank at the top here: for .240 Weath. Mag. with the .243 | 107gr | Nosler Custom Competition 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.