Load Specifications
Load data in caliber .240 Weath. Mag. with .243 | 105gr | Berger Hybrid Target bullet and 84 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 MAGPRO 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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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 2700 | <<locked>> | 82% | 57,319 psi | 90% | 2966 fps | 99.3% |
| Accurate 3100 | <<locked>> | 98% | 56,826 psi | 89% | 3022 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 57,087 psi | 89% | 2943 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,650 psi | 86% | 3009 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,186 psi | 85% | 3104 fps | 97.7% |
| Accurate MAGPRO | <<locked>> | 96% | 55,274 psi | 87% | 3107 fps | 96.7% |
| ADI AR 2208 | <<locked>> | 84% | 56,652 psi | 89% | 2979 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,709 psi | 87% | 3061 fps | 98.7% |
| ADI AR 2213 | <<locked>> | 98% | 57,145 psi | 90% | 3117 fps | 98% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,378 psi | 62% | 2815 fps | 96.9% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,318 psi | 88% | 3064 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,580 psi | 90% | 2999 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,317 psi | 87% | 3064 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 56,971 psi | 89% | 3087 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,955 psi | 86% | 3045 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,695 psi | 89% | 3114 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,305 psi | 90% | 3084 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,734 psi | 78% | 3025 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,925 psi | 85% | 3120 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,492 psi | 87% | 3091 fps | 98.7% |
| Bofors RP3 | <<locked>> | 82% | 55,230 psi | 87% | 2966 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,426 psi | 71% | 2940 fps | 96.1% |
| Bofors RP5 | <<locked>> | 98% | 56,695 psi | 89% | 3114 fps | 99% |
| Bofors RP7 | <<locked>> | 86% | 54,433 psi | 85% | 2956 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,863 psi | 77% | 2963 fps | 97.1% |
| Hodgdon H380 | <<locked>> | 82% | 55,172 psi | 86% | 2979 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 56,652 psi | 89% | 3061 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 86% | 56,115 psi | 88% | 3022 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 96% | 57,000 psi | 89% | 3051 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 55,869 psi | 88% | 3035 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 55,724 psi | 87% | 2986 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,530 psi | 76% | 3071 fps | 98.4% |
| Hodgdon Superformance | <<locked>> | 88% | 57,261 psi | 90% | 3104 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,840 psi | 58% | 1890 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,101 psi | 88% | 2959 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 55,564 psi | 87% | 2989 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 55,651 psi | 87% | 2979 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 55,317 psi | 87% | 3005 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,897 psi | 86% | 2982 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 98% | 54,462 psi | 85% | 3084 fps | 97.6% |
| Lovex S062 | <<locked>> | 82% | 56,536 psi | 89% | 2953 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,159 psi | 88% | 2979 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 57,580 psi | 90% | 3022 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,488 psi | 79% | 2920 fps | 99.5% |
| Norma 203B | <<locked>> | 82% | 57,101 psi | 89% | 3009 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,623 psi | 89% | 3048 fps | 98.7% |
| Norma MRP | <<locked>> | 96% | 56,260 psi | 88% | 3133 fps | 99.7% |
| Norma URP | <<locked>> | 90% | 56,768 psi | 89% | 3045 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,259 psi | 87% | 3107 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 55,854 psi | 88% | 3051 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,258 psi | 83% | 3038 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,478 psi | 59% | 1932 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,998 psi | 86% | 2966 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,347 psi | 88% | 3077 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,708 psi | 86% | 3031 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 56,826 psi | 89% | 3120 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,965 psi | 77% | 3068 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 84% | 55,434 psi | 87% | 2966 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 56,884 psi | 89% | 3022 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 94% | 54,563 psi | 86% | 3035 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 86% | 54,433 psi | 85% | 2956 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,159 psi | 88% | 2979 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 56,536 psi | 89% | 2953 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,580 psi | 90% | 3022 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,985 psi | 89% | 3025 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,724 psi | 87% | 2841 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,680 psi | 87% | 2930 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 57,711 psi | 90% | 3087 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 55,100 psi | 86% | 2956 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,143 psi | 86% | 2959 fps | 96.9% |
| Somchem S365 | <<locked>> | 92% | 56,768 psi | 89% | 3045 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,172 psi | 86% | 3009 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 86% | 56,391 psi | 88% | 2930 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,187 psi | 86% | 2986 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,447 psi | 85% | 2982 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 82% | 56,942 psi | 89% | 2923 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,404 psi | 85% | 2989 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,173 psi | 88% | 3061 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,217 psi | 88% | 3123 fps | 97.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,866 psi | 81% | 3028 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,810 psi | 86% | 2946 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,000 psi | 89% | 3068 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,896 psi | 84% | 3163 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,013 psi | 86% | 2999 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% | 53,621 psi | 84% | 2907 fps | 98.9% |
| Accurate 3100 | <<locked>> | 82% | 32,982 psi | 52% | 2552 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 53,679 psi | 84% | 2894 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,713 psi | 65% | 2772 fps | 99.3% |
| Accurate High Country | 47.6 gr | 88% | 44,019 psi | 69% | 2910 fps | 95.1% |
| Accurate MAGPRO | 51.8 gr | 94% | 51,488 psi | 81% | 3041 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 50,111 psi | 79% | 2874 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 42,540 psi | 67% | 2808 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 92% | 46,514 psi | 73% | 2920 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 98% | 37,043 psi | 58% | 2753 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 40,669 psi | 64% | 2766 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,908 psi | 80% | 2897 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,059 psi | 63% | 2782 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,919 psi | 72% | 2907 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 42,525 psi | 67% | 2805 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,306 psi | 63% | 2799 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,689 psi | 47% | 2530 fps | 97.8% |
| Alliant Reloder-25 | <<locked>> | 86% | 31,459 psi | 49% | 2595 fps | 95.2% |
| Alliant Reloder-26 | 44.6 gr | 80% | 31,995 psi | 50% | 2648 fps | 96.4% |
| Bofors RP15 | <<locked>> | 92% | 42,641 psi | 67% | 2851 fps | 95.9% |
| Bofors RP3 | <<locked>> | 80% | 51,532 psi | 81% | 2910 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,540 psi | 67% | 2877 fps | 95.2% |
| Bofors RP5 | <<locked>> | 88% | 40,306 psi | 63% | 2799 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 44,947 psi | 70% | 2782 fps | 97.5% |
| Hodgdon H1000 | <<locked>> | 96% | 42,902 psi | 67% | 2835 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 51,851 psi | 81% | 2927 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 43,497 psi | 68% | 2822 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 80% | 46,064 psi | 72% | 2838 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 92% | 49,777 psi | 78% | 2927 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,820 psi | 77% | 2910 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,608 psi | 59% | 2664 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,914 psi | 63% | 2867 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 42,511 psi | 67% | 2835 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,557 psi | 43% | 1690 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,736 psi | 83% | 2907 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,408 psi | 63% | 2703 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,398 psi | 73% | 2815 fps | 98.2% |
| IMR 4831 | <<locked>> | 80% | 39,755 psi | 62% | 2720 fps | 99% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,312 psi | 76% | 2867 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 92% | 44,556 psi | 70% | 2894 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 52,794 psi | 83% | 2897 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 43,990 psi | 69% | 2762 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 42,119 psi | 66% | 2743 fps | 97.6% |
| Lovex S071 | <<locked>> | 86% | 32,314 psi | 51% | 2536 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 53,693 psi | 84% | 2956 fps | 100% |
| Norma 204 | <<locked>> | 82% | 43,062 psi | 67% | 2799 fps | 95.8% |
| Norma MRP | <<locked>> | 84% | 36,796 psi | 58% | 2746 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 41,002 psi | 64% | 2759 fps | 99.1% |
| Ramshot Grand | <<locked>> | 92% | 44,570 psi | 70% | 2904 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 39,813 psi | 62% | 2749 fps | 97.6% |
| Ramshot Magnum | <<locked>> | 92% | 39,537 psi | 62% | 2769 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,934 psi | 44% | 1726 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,445 psi | 81% | 2907 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,704 psi | 76% | 2959 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,553 psi | 65% | 2792 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,943 psi | 63% | 2802 fps | 98.7% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,738 psi | 58% | 2779 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 48,544 psi | 76% | 2854 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 44,295 psi | 69% | 2792 fps | 95% |
| Rottweil R 905 | <<locked>> | 86% | 41,582 psi | 65% | 2785 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 44,947 psi | 70% | 2782 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,990 psi | 69% | 2762 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 52,794 psi | 83% | 2897 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,119 psi | 66% | 2743 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,777 psi | 78% | 2910 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,168 psi | 77% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,091 psi | 68% | 2707 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 41,205 psi | 65% | 2779 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 48,733 psi | 76% | 2854 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,298 psi | 76% | 2841 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 37,594 psi | 59% | 2713 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 37,159 psi | 58% | 2654 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 46,441 psi | 73% | 2776 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,540 psi | 67% | 2762 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 39,030 psi | 61% | 2690 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 53,621 psi | 84% | 2877 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,974 psi | 66% | 2762 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 33,185 psi | 52% | 2612 fps | 97.8% |
| Vihtavuori N560 | <<locked>> | 92% | 49,124 psi | 77% | 2995 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 96% | 45,281 psi | 71% | 2904 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,452 psi | 65% | 2723 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,497 psi | 68% | 2822 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,223 psi | 41% | 2507 fps | 97% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,785 psi | 65% | 2756 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 84 powders for .240 Weath. Mag. loaded with the .243 | 105gr | Berger Hybrid Target. Winchester StaBALL HD delivers the highest muzzle velocity at 3,163 fps; across all powders the maximum-charge window runs from 1,890 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 58–90 %, leaving at least 10 % headroom. The 105.0 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-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. Alliant Reloder-26, Accurate MAGPRO, Accurate High Country rank at the top here: for .240 Weath. Mag. with the .243 | 105gr | Berger Hybrid Target 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.