Load Specifications
Load data in caliber .240 Weath. Mag. with .243 | 105gr | Nosler Custom Competition bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Alliant Reloder-26 and Accurate High Country.
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% | 57,087 psi | 89% | 2963 fps | 99.3% |
| Accurate 3100 | <<locked>> | 98% | 56,956 psi | 89% | 3022 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 56,855 psi | 89% | 2940 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,752 psi | 86% | 3009 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,273 psi | 85% | 3107 fps | 97.7% |
| Accurate MAGPRO | <<locked>> | 96% | 55,056 psi | 86% | 3104 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 56,391 psi | 88% | 2972 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,419 psi | 87% | 3054 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 98% | 56,927 psi | 89% | 3114 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,465 psi | 62% | 2815 fps | 96.9% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 55,767 psi | 87% | 3054 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,711 psi | 90% | 2999 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,448 psi | 87% | 3068 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,695 psi | 89% | 3084 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,042 psi | 86% | 3041 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,434 psi | 88% | 3107 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,406 psi | 90% | 3084 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,530 psi | 78% | 3022 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,679 psi | 84% | 3114 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,201 psi | 87% | 3087 fps | 98.7% |
| Bofors RP3 | <<locked>> | 82% | 54,969 psi | 86% | 2959 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,513 psi | 71% | 2940 fps | 96.1% |
| Bofors RP5 | <<locked>> | 98% | 56,434 psi | 88% | 3107 fps | 98.9% |
| Bofors RP7 | <<locked>> | 88% | 57,638 psi | 90% | 3009 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,979 psi | 77% | 2963 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 82% | 55,259 psi | 87% | 2982 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,739 psi | 89% | 3061 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 55,825 psi | 87% | 3015 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 96% | 57,101 psi | 89% | 3051 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,043 psi | 88% | 3035 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,811 psi | 87% | 2986 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,617 psi | 76% | 3071 fps | 98.4% |
| Hodgdon Superformance | <<locked>> | 88% | 57,043 psi | 89% | 3097 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,608 psi | 57% | 1886 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 55,869 psi | 88% | 2956 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,709 psi | 87% | 2992 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,753 psi | 87% | 2979 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 55,071 psi | 86% | 2999 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,636 psi | 86% | 2979 fps | 97% |
| IMR 7828 SSC | <<locked>> | 98% | 54,563 psi | 86% | 3087 fps | 97.6% |
| Lovex S062 | <<locked>> | 82% | 56,275 psi | 88% | 2949 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,246 psi | 88% | 2979 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 57,725 psi | 90% | 3025 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,604 psi | 79% | 2920 fps | 99.5% |
| Norma 203B | <<locked>> | 82% | 57,188 psi | 90% | 3009 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,347 psi | 88% | 3041 fps | 98.6% |
| Norma MRP | <<locked>> | 96% | 56,362 psi | 88% | 3136 fps | 99.7% |
| Norma URP | <<locked>> | 90% | 56,855 psi | 89% | 3045 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,027 psi | 86% | 3104 fps | 98% |
| Ramshot Hunter | <<locked>> | 90% | 55,564 psi | 87% | 3045 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,388 psi | 84% | 3041 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,521 psi | 59% | 1932 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,085 psi | 86% | 2966 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,086 psi | 88% | 3071 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,795 psi | 86% | 3031 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,594 psi | 89% | 3114 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,776 psi | 76% | 3064 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 84% | 55,172 psi | 86% | 2959 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,043 psi | 89% | 3025 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 94% | 54,346 psi | 85% | 3028 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 88% | 57,638 psi | 90% | 3009 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,246 psi | 88% | 2979 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 56,275 psi | 88% | 2949 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,725 psi | 90% | 3025 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,724 psi | 89% | 3018 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,492 psi | 87% | 2838 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,709 psi | 87% | 2930 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,450 psi | 90% | 3081 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 55,230 psi | 87% | 2956 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,230 psi | 87% | 2959 fps | 96.9% |
| Somchem S365 | <<locked>> | 92% | 56,855 psi | 89% | 3048 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,955 psi | 86% | 3005 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 86% | 56,478 psi | 89% | 2930 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,274 psi | 87% | 2986 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,549 psi | 85% | 2982 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 82% | 57,043 psi | 89% | 2927 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,476 psi | 85% | 2989 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 55,927 psi | 88% | 3058 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,318 psi | 88% | 3123 fps | 97.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,967 psi | 81% | 3031 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,607 psi | 86% | 2943 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 56,739 psi | 89% | 3061 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,027 psi | 85% | 3163 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 54,781 psi | 86% | 2995 fps | 98.5% |
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 2700 | <<locked>> | 80% | 53,388 psi | 84% | 2900 fps | 98.8% |
| Accurate 3100 | <<locked>> | 82% | 32,996 psi | 52% | 2552 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 53,417 psi | 84% | 2890 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,481 psi | 65% | 2769 fps | 99.2% |
| Accurate High Country | 47.6 gr | 88% | 44,106 psi | 69% | 2910 fps | 95.1% |
| Accurate MAGPRO | 51.7 gr | 94% | 51,227 psi | 80% | 3035 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 49,893 psi | 78% | 2867 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 42,627 psi | 67% | 2812 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 92% | 46,586 psi | 73% | 2920 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 98% | 36,883 psi | 58% | 2746 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 40,132 psi | 63% | 2749 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,024 psi | 80% | 2897 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,856 psi | 62% | 2776 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,977 psi | 72% | 2907 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 42,337 psi | 66% | 2802 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,364 psi | 63% | 2799 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,559 psi | 46% | 2523 fps | 97.7% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,502 psi | 49% | 2595 fps | 95.2% |
| Alliant Reloder-26 | 44.5 gr | 80% | 31,850 psi | 50% | 2641 fps | 96.3% |
| Bofors RP15 | <<locked>> | 92% | 42,453 psi | 67% | 2844 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 51,605 psi | 81% | 2910 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,627 psi | 67% | 2877 fps | 95.2% |
| Bofors RP5 | <<locked>> | 88% | 40,364 psi | 63% | 2799 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 45,020 psi | 71% | 2782 fps | 97.5% |
| Hodgdon H1000 | <<locked>> | 96% | 42,670 psi | 67% | 2828 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 51,605 psi | 81% | 2920 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 43,294 psi | 68% | 2818 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 80% | 46,122 psi | 72% | 2838 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 92% | 49,864 psi | 78% | 2930 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,907 psi | 77% | 2910 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,666 psi | 59% | 2664 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,740 psi | 62% | 2861 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 42,308 psi | 66% | 2828 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,586 psi | 43% | 1690 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,504 psi | 82% | 2904 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,480 psi | 63% | 2703 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,195 psi | 72% | 2808 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 39,813 psi | 62% | 2720 fps | 99% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,399 psi | 76% | 2864 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 92% | 44,643 psi | 70% | 2894 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 52,924 psi | 83% | 2897 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,787 psi | 69% | 2756 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 42,192 psi | 66% | 2740 fps | 97.6% |
| Lovex S071 | <<locked>> | 86% | 32,140 psi | 50% | 2530 fps | 95% |
| Norma 203B | <<locked>> | 80% | 53,447 psi | 84% | 2953 fps | 100% |
| Norma 204 | <<locked>> | 82% | 42,859 psi | 67% | 2792 fps | 95.7% |
| Norma MRP | <<locked>> | 84% | 36,854 psi | 58% | 2746 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 41,060 psi | 64% | 2762 fps | 99.1% |
| Ramshot Grand | <<locked>> | 92% | 44,382 psi | 70% | 2900 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 39,914 psi | 63% | 2749 fps | 97.6% |
| Ramshot Magnum | <<locked>> | 92% | 39,581 psi | 62% | 2772 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,978 psi | 44% | 1726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,532 psi | 81% | 2907 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,776 psi | 76% | 2959 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,336 psi | 65% | 2789 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,755 psi | 62% | 2795 fps | 98.6% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,767 psi | 58% | 2776 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 48,617 psi | 76% | 2854 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,092 psi | 69% | 2789 fps | 95% |
| Rottweil R 905 | <<locked>> | 86% | 41,640 psi | 65% | 2785 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 45,020 psi | 71% | 2782 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,787 psi | 69% | 2756 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 52,924 psi | 83% | 2897 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,192 psi | 66% | 2740 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,835 psi | 78% | 2910 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,226 psi | 77% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,888 psi | 67% | 2700 fps | 97.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 41,278 psi | 65% | 2779 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 48,486 psi | 76% | 2848 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,080 psi | 75% | 2835 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 37,652 psi | 59% | 2717 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,999 psi | 58% | 2651 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 46,528 psi | 73% | 2776 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,351 psi | 66% | 2759 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 39,102 psi | 61% | 2690 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 53,388 psi | 84% | 2874 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,771 psi | 65% | 2759 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 33,011 psi | 52% | 2605 fps | 97.7% |
| Vihtavuori N560 | <<locked>> | 92% | 48,921 psi | 77% | 2992 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 96% | 45,353 psi | 71% | 2904 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,510 psi | 65% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,613 psi | 68% | 2825 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,237 psi | 41% | 2507 fps | 97% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,582 psi | 65% | 2753 fps | 95.5% |
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 84 powders for .240 Weath. Mag. loaded with the .243 | 105gr | Nosler Custom Competition. Winchester StaBALL HD delivers the highest muzzle velocity at 3,163 fps; across all powders the maximum-charge window runs from 1,886 fps to 3,163 fps. ADI AR 2225 gives the best case fill at 100 %, and 84 of the 84 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 105.0 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-23, 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. Accurate MAGPRO, Alliant Reloder-26, Accurate High Country rank at the top here: for .240 Weath. Mag. with the .243 | 105gr | 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.