Load Specifications
Load data in caliber .240 Weath. Mag. with .243 | 107gr | Sierra MatchKing bullet and 79 powders. The key underlying parameters are shown in the table above.
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>> | 98% | 57,667 psi | 90% | 3009 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,811 psi | 87% | 2999 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 55,390 psi | 87% | 3104 fps | 98.1% |
| Accurate MAGPRO | <<locked>> | 96% | 56,478 psi | 89% | 3107 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 84% | 57,246 psi | 90% | 2963 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,405 psi | 88% | 3048 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 96% | 54,302 psi | 85% | 3045 fps | 97.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,219 psi | 63% | 2815 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,129 psi | 86% | 2936 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,492 psi | 89% | 3054 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,824 psi | 84% | 3015 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,999 psi | 88% | 3038 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,522 psi | 90% | 3100 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,549 psi | 85% | 3018 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,502 psi | 79% | 3015 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,911 psi | 86% | 3107 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,260 psi | 88% | 3081 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 55,927 psi | 88% | 2953 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,514 psi | 73% | 2936 fps | 96.6% |
| Bofors RP5 | <<locked>> | 98% | 57,522 psi | 90% | 3100 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 55,056 psi | 86% | 2943 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,864 psi | 78% | 2959 fps | 97.6% |
| Hodgdon H380 | <<locked>> | 82% | 56,130 psi | 88% | 2972 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,725 psi | 90% | 3054 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 56,739 psi | 89% | 3009 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 94% | 54,128 psi | 85% | 2982 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 96% | 57,029 psi | 89% | 3031 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,826 psi | 89% | 2976 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,574 psi | 78% | 3071 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 86% | 54,157 psi | 85% | 3028 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,854 psi | 58% | 1873 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,695 psi | 89% | 2943 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,231 psi | 88% | 2976 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,565 psi | 89% | 2969 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 56,028 psi | 88% | 2989 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,492 psi | 87% | 2969 fps | 97.4% |
| IMR 7828 SSC | <<locked>> | 98% | 55,579 psi | 87% | 3081 fps | 98% |
| Lovex S062 | <<locked>> | 82% | 57,116 psi | 90% | 2936 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,116 psi | 90% | 2969 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,172 psi | 86% | 2963 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,605 psi | 81% | 2913 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 57,305 psi | 90% | 3035 fps | 98.9% |
| Norma MRP | <<locked>> | 96% | 57,508 psi | 90% | 3130 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 54,317 psi | 85% | 2982 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 56,130 psi | 88% | 3100 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 56,550 psi | 89% | 3038 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,476 psi | 85% | 3035 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,507 psi | 59% | 1916 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,941 psi | 88% | 2959 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,174 psi | 90% | 3061 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,448 psi | 87% | 3018 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,682 psi | 90% | 3104 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,748 psi | 78% | 3064 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 84% | 56,101 psi | 88% | 2949 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,462 psi | 85% | 2963 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 94% | 55,288 psi | 87% | 3022 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 86% | 55,056 psi | 86% | 2943 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,116 psi | 90% | 2969 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,116 psi | 90% | 2936 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,172 psi | 86% | 2963 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,667 psi | 90% | 3009 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,318 psi | 88% | 2825 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,579 psi | 89% | 2920 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,897 psi | 86% | 3018 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 55,753 psi | 87% | 2940 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,782 psi | 87% | 2946 fps | 97.2% |
| Somchem S365 | <<locked>> | 90% | 53,998 psi | 85% | 2982 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,927 psi | 88% | 2995 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 86% | 57,029 psi | 89% | 2913 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,231 psi | 88% | 2976 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,158 psi | 86% | 2969 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 88% | 55,419 psi | 87% | 2982 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 57,043 psi | 89% | 3048 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,406 psi | 90% | 3120 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,040 psi | 83% | 3025 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,550 psi | 87% | 2930 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,725 psi | 90% | 3054 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,506 psi | 87% | 3156 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,782 psi | 87% | 2989 fps | 98.8% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 82% | 33,504 psi | 53% | 2546 fps | 95.9% |
| Accurate 4350 | <<locked>> | 80% | 42,337 psi | 66% | 2762 fps | 99.5% |
| Accurate High Country | <<locked>> | 88% | 44,701 psi | 70% | 2900 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 92% | 48,718 psi | 76% | 2966 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 50,676 psi | 79% | 2858 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,437 psi | 63% | 2740 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 90% | 44,193 psi | 69% | 2851 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 35,331 psi | 55% | 2687 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,517 psi | 81% | 2881 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,582 psi | 64% | 2769 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,586 psi | 73% | 2894 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,495 psi | 63% | 2740 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 88% | 41,176 psi | 65% | 2795 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,153 psi | 47% | 2523 fps | 98.1% |
| Alliant Reloder-25 | <<locked>> | 86% | 32,097 psi | 50% | 2595 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 32,532 psi | 51% | 2644 fps | 96.9% |
| Bofors RP15 | <<locked>> | 90% | 40,654 psi | 64% | 2782 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 52,475 psi | 82% | 2897 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 43,265 psi | 68% | 2871 fps | 95.7% |
| Bofors RP5 | <<locked>> | 88% | 41,176 psi | 65% | 2795 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 45,469 psi | 71% | 2769 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 96% | 43,453 psi | 68% | 2828 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 52,446 psi | 82% | 2913 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,106 psi | 69% | 2812 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 80% | 46,905 psi | 74% | 2835 fps | 97.5% |
| Hodgdon H4831 | <<locked>> | 90% | 47,311 psi | 74% | 2861 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 90% | 46,383 psi | 73% | 2841 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,450 psi | 60% | 2661 fps | 99.8% |
| Hodgdon Retumbo | <<locked>> | 92% | 38,029 psi | 60% | 2799 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 43,192 psi | 68% | 2828 fps | 97.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,572 psi | 43% | 1677 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,287 psi | 84% | 2894 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,176 psi | 65% | 2697 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,905 psi | 74% | 2802 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 40,321 psi | 63% | 2707 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 88% | 45,963 psi | 72% | 2799 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 92% | 45,179 psi | 71% | 2884 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 53,722 psi | 84% | 2884 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,512 psi | 70% | 2749 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 42,917 psi | 67% | 2736 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 32,822 psi | 51% | 2530 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 40,930 psi | 64% | 2730 fps | 95.4% |
| Norma MRP | <<locked>> | 82% | 35,027 psi | 55% | 2677 fps | 95% |
| Norma URP | <<locked>> | 80% | 41,843 psi | 66% | 2756 fps | 99.4% |
| Ramshot Grand | <<locked>> | 92% | 45,266 psi | 71% | 2900 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 40,654 psi | 64% | 2743 fps | 98% |
| Ramshot Magnum | <<locked>> | 90% | 37,565 psi | 59% | 2703 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,224 psi | 44% | 1716 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,315 psi | 82% | 2897 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,458 psi | 78% | 2946 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,192 psi | 66% | 2782 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,524 psi | 64% | 2792 fps | 99% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 37,492 psi | 59% | 2782 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 80% | 49,458 psi | 78% | 2844 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,860 psi | 70% | 2782 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 84% | 39,769 psi | 62% | 2723 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 45,469 psi | 71% | 2769 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,512 psi | 70% | 2749 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 53,722 psi | 84% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,917 psi | 67% | 2736 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,720 psi | 79% | 2900 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,995 psi | 78% | 2733 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,584 psi | 68% | 2694 fps | 98% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 39,421 psi | 62% | 2720 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 49,269 psi | 77% | 2838 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,878 psi | 77% | 2831 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 38,522 psi | 60% | 2710 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,710 psi | 59% | 2648 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 47,311 psi | 74% | 2766 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,134 psi | 68% | 2749 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 86% | 37,159 psi | 58% | 2628 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 42,540 psi | 67% | 2753 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 33,750 psi | 53% | 2602 fps | 98.2% |
| Vihtavuori N560 | <<locked>> | 90% | 46,499 psi | 73% | 2923 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 46,311 psi | 73% | 2904 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,264 psi | 66% | 2717 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,106 psi | 69% | 2812 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,789 psi | 42% | 2510 fps | 97.7% |
| Winchester Supreme 780 | <<locked>> | 86% | 39,421 psi | 62% | 2684 fps | 95.1% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 79 powders for .240 Weath. Mag. loaded with the .243 | 107gr | Sierra MatchKing. Winchester StaBALL HD delivers the highest muzzle velocity at 3,156 fps; across all powders the maximum-charge window runs from 1,873 fps to 3,156 fps. ADI AR 2225 gives the best case fill at 100 %, and 79 of the 79 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 1:8.0 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.