Load Specifications
Load data in caliber .240 Weath. Mag. with .243 | 100gr | Norma SSP bullet and 83 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 2700 | <<locked>> | 82% | 57,363 psi | 90% | 3038 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 57,203 psi | 90% | 3097 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 57,246 psi | 90% | 3022 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 54,998 psi | 86% | 3084 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 54,897 psi | 86% | 3186 fps | 97.6% |
| Accurate MAGPRO | <<locked>> | 96% | 55,724 psi | 87% | 3182 fps | 96.4% |
| ADI AR 2208 | <<locked>> | 84% | 56,666 psi | 89% | 3051 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,956 psi | 88% | 3133 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 57,406 psi | 90% | 3192 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,784 psi | 62% | 2884 fps | 96.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,246 psi | 88% | 3133 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 54,563 psi | 86% | 3025 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 56,028 psi | 88% | 3150 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,145 psi | 90% | 3166 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,506 psi | 87% | 3120 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 57,000 psi | 89% | 3189 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,740 psi | 90% | 3163 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,966 psi | 78% | 3097 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 54,520 psi | 85% | 3196 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,796 psi | 87% | 3166 fps | 98.5% |
| Bofors RP3 | <<locked>> | 82% | 55,492 psi | 87% | 3041 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 57,000 psi | 89% | 3189 fps | 98.8% |
| Bofors RP7 | <<locked>> | 86% | 54,607 psi | 86% | 3028 fps | 99% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,298 psi | 77% | 3031 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 82% | 55,709 psi | 87% | 3064 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,116 psi | 90% | 3140 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 56,405 psi | 88% | 3097 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 57,725 psi | 90% | 3133 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,304 psi | 88% | 3110 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,304 psi | 88% | 3064 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,994 psi | 77% | 3146 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 88% | 57,682 psi | 90% | 3179 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,738 psi | 58% | 1949 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,202 psi | 88% | 3038 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,086 psi | 88% | 3071 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,101 psi | 88% | 3058 fps | 99.4% |
| IMR 4831 | <<locked>> | 90% | 55,521 psi | 87% | 3077 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 55,100 psi | 86% | 3054 fps | 96.9% |
| IMR 7828 SSC | <<locked>> | 98% | 55,100 psi | 86% | 3166 fps | 97.4% |
| Lovex S062 | <<locked>> | 82% | 56,623 psi | 89% | 3028 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,507 psi | 89% | 3058 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 54,534 psi | 85% | 3045 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,053 psi | 80% | 2995 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 57,421 psi | 90% | 3087 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,927 psi | 89% | 3123 fps | 98.5% |
| Norma MRP | <<locked>> | 96% | 56,826 psi | 89% | 3212 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 57,348 psi | 90% | 3127 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,753 psi | 87% | 3186 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 90% | 56,159 psi | 88% | 3123 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,838 psi | 84% | 3117 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,623 psi | 59% | 1998 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 55,390 psi | 87% | 3045 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,652 psi | 89% | 3156 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 55,071 psi | 86% | 3107 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,348 psi | 90% | 3199 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,385 psi | 77% | 3143 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 84% | 55,680 psi | 87% | 3041 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,566 psi | 90% | 3107 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 94% | 54,839 psi | 86% | 3107 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 86% | 54,607 psi | 86% | 3028 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,507 psi | 89% | 3058 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 56,623 psi | 89% | 3028 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 54,534 psi | 85% | 3045 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 57,319 psi | 90% | 3104 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,854 psi | 88% | 2913 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,854 psi | 88% | 3002 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 54,389 psi | 85% | 3100 fps | 98.4% |
| Somchem S355 | <<locked>> | 84% | 55,419 psi | 87% | 3035 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,434 psi | 87% | 3031 fps | 96.7% |
| Somchem S365 | <<locked>> | 92% | 57,246 psi | 90% | 3127 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,361 psi | 87% | 3081 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 86% | 56,869 psi | 89% | 3009 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,448 psi | 87% | 3061 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,752 psi | 86% | 3054 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 82% | 57,493 psi | 90% | 3009 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 54,911 psi | 86% | 3068 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,478 psi | 89% | 3136 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,826 psi | 89% | 3202 fps | 97.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,620 psi | 82% | 3107 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,361 psi | 87% | 3025 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,116 psi | 90% | 3140 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,882 psi | 86% | 3245 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,361 psi | 87% | 3071 fps | 98.4% |
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% | 53,809 psi | 84% | 2979 fps | 98.7% |
| Accurate 3100 | <<locked>> | 82% | 33,199 psi | 52% | 2618 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 53,925 psi | 85% | 2969 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,829 psi | 66% | 2841 fps | 99.1% |
| Accurate High Country | 50.7 gr | 90% | 47,529 psi | 74% | 3045 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 94% | 52,040 psi | 82% | 3117 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 50,024 psi | 78% | 2943 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 42,888 psi | 67% | 2881 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 92% | 46,760 psi | 73% | 2989 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 98% | 37,260 psi | 58% | 2815 fps | 95.5% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 43,308 psi | 68% | 2884 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 51,111 psi | 80% | 2969 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 40,263 psi | 63% | 2851 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 46,122 psi | 72% | 2979 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 42,844 psi | 67% | 2877 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,756 psi | 64% | 2871 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,834 psi | 47% | 2589 fps | 97.4% |
| Alliant Reloder-25 | <<locked>> | 88% | 33,895 psi | 53% | 2723 fps | 96% |
| Alliant Reloder-26 | 46.5 gr | 80% | 32,300 psi | 51% | 2713 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 43,047 psi | 67% | 2920 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 51,924 psi | 81% | 2989 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 40,756 psi | 64% | 2871 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 45,150 psi | 71% | 2851 fps | 97.3% |
| Hodgdon H1000 | <<locked>> | 96% | 43,192 psi | 68% | 2904 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 52,170 psi | 82% | 3002 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 43,526 psi | 68% | 2887 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 80% | 46,412 psi | 73% | 2913 fps | 96.9% |
| Hodgdon H4831 | <<locked>> | 92% | 50,343 psi | 79% | 3005 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 49,095 psi | 77% | 2982 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,869 psi | 59% | 2733 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 40,306 psi | 63% | 2936 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 42,772 psi | 67% | 2904 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,572 psi | 43% | 1745 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,649 psi | 83% | 2979 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 40,785 psi | 64% | 2776 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,557 psi | 73% | 2884 fps | 98% |
| IMR 4831 | <<locked>> | 80% | 39,914 psi | 63% | 2785 fps | 98.8% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,733 psi | 76% | 2940 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 94% | 48,037 psi | 75% | 3031 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 53,055 psi | 83% | 2972 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,179 psi | 69% | 2831 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 42,279 psi | 66% | 2808 fps | 97.3% |
| Lovex S071 | <<locked>> | 88% | 34,722 psi | 54% | 2654 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 53,824 psi | 84% | 3031 fps | 100% |
| Norma 204 | <<locked>> | 82% | 43,207 psi | 68% | 2864 fps | 95.4% |
| Norma MRP | 47.4 gr | 84% | 37,275 psi | 58% | 2815 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 41,176 psi | 65% | 2831 fps | 98.9% |
| Ramshot Grand | <<locked>> | 92% | 44,715 psi | 70% | 2972 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 40,059 psi | 63% | 2815 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 92% | 40,089 psi | 63% | 2841 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,934 psi | 44% | 1781 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,967 psi | 81% | 2986 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,950 psi | 77% | 3035 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,756 psi | 65% | 2861 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,045 psi | 63% | 2864 fps | 98.4% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 37,159 psi | 58% | 2844 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 48,704 psi | 76% | 2927 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 47,485 psi | 74% | 2923 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 86% | 41,945 psi | 66% | 2858 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 45,150 psi | 71% | 2851 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,179 psi | 69% | 2831 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 53,055 psi | 83% | 2972 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,279 psi | 66% | 2808 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,053 psi | 78% | 2986 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,516 psi | 78% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,149 psi | 68% | 2772 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 41,597 psi | 65% | 2851 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 48,921 psi | 77% | 2927 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,501 psi | 76% | 2907 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 38,000 psi | 60% | 2789 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 39,958 psi | 63% | 2779 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 46,586 psi | 73% | 2844 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,656 psi | 67% | 2831 fps | 99.2% |
| Vihtavuori N165 | <<locked>> | 88% | 39,276 psi | 62% | 2756 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 53,940 psi | 85% | 2956 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 42,250 psi | 66% | 2835 fps | 99% |
| Vihtavuori N555 | <<locked>> | 80% | 33,344 psi | 52% | 2674 fps | 97.5% |
| Vihtavuori N560 | <<locked>> | 92% | 49,574 psi | 78% | 3071 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 98% | 49,095 psi | 77% | 3041 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,756 psi | 65% | 2795 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,787 psi | 69% | 2894 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,397 psi | 41% | 2562 fps | 96.5% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,901 psi | 66% | 2818 fps | 95.3% |
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 83 powders for .240 Weath. Mag. loaded with the .243 | 100gr | Norma SSP. Winchester StaBALL HD delivers the highest muzzle velocity at 3,245 fps; across all powders the maximum-charge window runs from 1,949 fps to 3,245 fps. ADI AR 2225 gives the best case fill at 100 %, and 83 of the 83 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 100.0 gr projectile in 0.243" calls for a 1:10.5 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. Alliant Reloder-26, Accurate High Country, Norma MRP rank at the top here: for .240 Weath. Mag. with the .243 | 100gr | Norma SSP 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.