Load Specifications
Load data in caliber .240 Weath. Mag. with .243 | 105gr | Berger BT 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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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 3100 | <<locked>> | 96% | 53,940 psi | 85% | 2976 fps | 99.8% |
| Accurate 4064 | <<locked>> | 82% | 57,682 psi | 90% | 2953 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 55,535 psi | 87% | 3022 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 55,230 psi | 87% | 3123 fps | 98% |
| Accurate MAGPRO | <<locked>> | 96% | 56,246 psi | 88% | 3127 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 57,130 psi | 90% | 2986 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 56,405 psi | 88% | 3074 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 96% | 54,201 psi | 85% | 3071 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,074 psi | 63% | 2835 fps | 97.2% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,695 psi | 89% | 3071 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,013 psi | 86% | 2963 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,188 psi | 88% | 3081 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 53,896 psi | 84% | 3045 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,985 psi | 88% | 3061 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,377 psi | 90% | 3127 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 98% | 54,476 psi | 85% | 3045 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,343 psi | 79% | 3038 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,085 psi | 86% | 3136 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 56,173 psi | 88% | 3104 fps | 98.8% |
| Bofors RP3 | <<locked>> | 82% | 55,738 psi | 87% | 2976 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 46,354 psi | 73% | 2959 fps | 96.4% |
| Bofors RP5 | <<locked>> | 98% | 57,377 psi | 90% | 3127 fps | 99.1% |
| Bofors RP7 | <<locked>> | 86% | 54,839 psi | 86% | 2966 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,690 psi | 78% | 2979 fps | 97.4% |
| Hodgdon H380 | <<locked>> | 82% | 55,970 psi | 88% | 2995 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,406 psi | 90% | 3077 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 56,507 psi | 89% | 3028 fps | 99% |
| Hodgdon H4831 | <<locked>> | 94% | 54,070 psi | 85% | 3005 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,927 psi | 89% | 3054 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,550 psi | 89% | 2999 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 49,443 psi | 77% | 3091 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 86% | 54,114 psi | 85% | 3054 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,811 psi | 58% | 1893 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,608 psi | 89% | 2969 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,260 psi | 88% | 3005 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,376 psi | 88% | 2992 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 55,738 psi | 87% | 3009 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,477 psi | 87% | 2995 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 98% | 55,492 psi | 87% | 3104 fps | 97.9% |
| Lovex S062 | <<locked>> | 82% | 57,029 psi | 89% | 2963 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,884 psi | 89% | 2992 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 54,940 psi | 86% | 2982 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,517 psi | 81% | 2940 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 57,305 psi | 90% | 3061 fps | 98.8% |
| Norma MRP | <<locked>> | 96% | 57,334 psi | 90% | 3153 fps | 99.8% |
| Norma URP | <<locked>> | 90% | 57,508 psi | 90% | 3058 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,912 psi | 88% | 3123 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 56,536 psi | 89% | 3064 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,201 psi | 85% | 3054 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,463 psi | 59% | 1936 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,738 psi | 87% | 2982 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 57,232 psi | 90% | 3087 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,448 psi | 87% | 3045 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,580 psi | 90% | 3130 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,806 psi | 78% | 3087 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 84% | 55,941 psi | 88% | 2972 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,128 psi | 85% | 2982 fps | 97.5% |
| Rottweil R 905 | <<locked>> | 94% | 55,288 psi | 87% | 3048 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 86% | 54,839 psi | 86% | 2966 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,884 psi | 89% | 2992 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,029 psi | 89% | 2963 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,940 psi | 86% | 2982 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,450 psi | 90% | 3031 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,217 psi | 88% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 56,362 psi | 88% | 2943 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,839 psi | 86% | 3041 fps | 98.7% |
| Somchem S355 | <<locked>> | 84% | 55,608 psi | 87% | 2966 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,999 psi | 88% | 2976 fps | 97.2% |
| Somchem S365 | <<locked>> | 92% | 57,609 psi | 90% | 3061 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,825 psi | 87% | 3022 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 86% | 57,203 psi | 90% | 2943 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,956 psi | 88% | 2999 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,405 psi | 87% | 2999 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 57,711 psi | 90% | 2936 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 55,129 psi | 86% | 3002 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,956 psi | 89% | 3074 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 57,261 psi | 90% | 3143 fps | 97.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,794 psi | 83% | 3048 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,492 psi | 87% | 2956 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 53,998 psi | 85% | 3022 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 55,245 psi | 87% | 3179 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,043 psi | 88% | 3015 fps | 98.7% |
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>> | 82% | 33,620 psi | 53% | 2569 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 54,244 psi | 85% | 2904 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 42,192 psi | 66% | 2785 fps | 99.4% |
| Accurate High Country | 48.2 gr | 88% | 44,715 psi | 70% | 2927 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 92% | 48,892 psi | 77% | 2995 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 50,604 psi | 79% | 2884 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 40,567 psi | 64% | 2769 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 92% | 47,108 psi | 74% | 2936 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 96% | 35,273 psi | 55% | 2707 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 40,756 psi | 64% | 2766 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,445 psi | 81% | 2904 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,553 psi | 64% | 2792 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,731 psi | 73% | 2923 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 40,350 psi | 63% | 2759 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,944 psi | 64% | 2815 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,110 psi | 47% | 2539 fps | 98% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,981 psi | 50% | 2612 fps | 95.6% |
| Alliant Reloder-26 | 45.2 gr | 80% | 32,619 psi | 51% | 2667 fps | 96.8% |
| Bofors RP15 | <<locked>> | 90% | 40,422 psi | 63% | 2802 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 52,388 psi | 82% | 2923 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 43,424 psi | 68% | 2897 fps | 95.5% |
| Bofors RP5 | <<locked>> | 88% | 40,944 psi | 64% | 2815 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 45,411 psi | 71% | 2795 fps | 97.7% |
| Hodgdon H1000 | <<locked>> | 96% | 43,381 psi | 68% | 2848 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 52,315 psi | 82% | 2936 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 43,976 psi | 69% | 2835 fps | 97.9% |
| Hodgdon H4350 | <<locked>> | 80% | 46,804 psi | 73% | 2854 fps | 97.4% |
| Hodgdon H4831 | <<locked>> | 90% | 47,282 psi | 74% | 2884 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 92% | 49,443 psi | 77% | 2923 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,116 psi | 60% | 2674 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 94% | 40,451 psi | 63% | 2884 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 43,221 psi | 68% | 2851 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,644 psi | 43% | 1696 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,258 psi | 83% | 2920 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,089 psi | 64% | 2723 fps | 96.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,847 psi | 73% | 2825 fps | 98.4% |
| IMR 4831 | <<locked>> | 80% | 40,263 psi | 63% | 2730 fps | 99.1% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,035 psi | 72% | 2822 fps | 95% |
| IMR 7828 SSC | <<locked>> | 92% | 45,165 psi | 71% | 2907 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 53,679 psi | 84% | 2913 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,440 psi | 70% | 2772 fps | 98.9% |
| Lovex S070 | <<locked>> | 80% | 42,583 psi | 67% | 2753 fps | 97.7% |
| Lovex S071 | <<locked>> | 86% | 32,721 psi | 51% | 2546 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 40,828 psi | 64% | 2753 fps | 95.1% |
| Norma MRP | 46 gr | 84% | 37,405 psi | 59% | 2759 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 41,510 psi | 65% | 2772 fps | 99.2% |
| Ramshot Grand | <<locked>> | 92% | 45,165 psi | 71% | 2920 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 40,509 psi | 63% | 2766 fps | 97.8% |
| Ramshot Magnum | <<locked>> | 90% | 37,536 psi | 59% | 2723 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,036 psi | 44% | 1732 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,199 psi | 82% | 2920 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 49,603 psi | 78% | 2976 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,018 psi | 66% | 2802 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,379 psi | 63% | 2812 fps | 98.8% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 37,420 psi | 59% | 2799 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 49,066 psi | 77% | 2864 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,686 psi | 70% | 2805 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 84% | 39,653 psi | 62% | 2743 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 80% | 45,411 psi | 71% | 2795 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,440 psi | 70% | 2772 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 53,679 psi | 84% | 2913 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,583 psi | 67% | 2753 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,560 psi | 79% | 2923 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,676 psi | 78% | 2756 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,482 psi | 68% | 2717 fps | 97.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 39,305 psi | 62% | 2740 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 49,240 psi | 77% | 2864 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,878 psi | 77% | 2854 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 38,392 psi | 60% | 2733 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,565 psi | 59% | 2664 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 46,905 psi | 74% | 2782 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,047 psi | 67% | 2772 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 39,668 psi | 62% | 2707 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 54,070 psi | 85% | 2887 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,424 psi | 66% | 2772 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 80% | 33,678 psi | 53% | 2621 fps | 98% |
| Vihtavuori N560 | <<locked>> | 90% | 46,456 psi | 73% | 2946 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 96% | 46,195 psi | 72% | 2923 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,076 psi | 66% | 2736 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,976 psi | 69% | 2835 fps | 97.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,701 psi | 42% | 2526 fps | 97.4% |
| Winchester Supreme 780 | <<locked>> | 88% | 42,409 psi | 66% | 2772 fps | 95.9% |
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 | 105gr | Berger BT. Winchester StaBALL HD delivers the highest muzzle velocity at 3,179 fps; across all powders the maximum-charge window runs from 1,893 fps to 3,179 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 105.0 gr projectile in 0.243" calls for a 1:9.0 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. Alliant Reloder-26, Accurate High Country, Norma MRP rank at the top here: for .240 Weath. Mag. with the .243 | 105gr | Berger BT 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.