Load Specifications
Load data in caliber .243 Win. with .243 | 100gr | Winchester Soft-Point 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, Alliant Reloder-16 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 2495 | <<locked>> | 82% | 54,273 psi | 90% | 2789 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 51,909 psi | 86% | 2795 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 53,403 psi | 89% | 2884 fps | 99.5% |
| Accurate 4064 | <<locked>> | 82% | 51,358 psi | 85% | 2799 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 51,996 psi | 86% | 2890 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 84% | 51,547 psi | 86% | 2825 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 53,156 psi | 88% | 2927 fps | 97.6% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 54,259 psi | 90% | 2969 fps | 96.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,143 psi | 90% | 2995 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 52,214 psi | 87% | 2848 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 52,315 psi | 87% | 2867 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 52,750 psi | 88% | 2949 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 53,751 psi | 89% | 2969 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 52,388 psi | 87% | 2913 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 53,098 psi | 88% | 2966 fps | 97.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,009 psi | 83% | 2904 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,787 psi | 73% | 2825 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,027 psi | 90% | 3041 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 48,588 psi | 81% | 2887 fps | 96.8% |
| Bofors RP3 | <<locked>> | 84% | 52,721 psi | 88% | 2858 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 53,098 psi | 88% | 2966 fps | 97.9% |
| Bofors RP7 | <<locked>> | 88% | 52,489 psi | 87% | 2841 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 84% | 53,505 psi | 89% | 2877 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 53,940 psi | 90% | 2936 fps | 99% |
| Hodgdon H4350 | <<locked>> | 88% | 53,925 psi | 90% | 2897 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 53,011 psi | 88% | 2871 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 54,230 psi | 90% | 2969 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,201 psi | 60% | 1837 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,259 psi | 90% | 2858 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,519 psi | 89% | 2838 fps | 98.8% |
| IMR 4350 | <<locked>> | 92% | 53,635 psi | 89% | 2874 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,259 psi | 90% | 2874 fps | 98.9% |
| IMR 4831 | <<locked>> | 92% | 52,402 psi | 87% | 2881 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 53,650 psi | 89% | 2897 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,808 psi | 88% | 2854 fps | 95.8% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 51,634 psi | 86% | 2936 fps | 96.1% |
| Lovex S062 | <<locked>> | 82% | 51,198 psi | 85% | 2805 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,317 psi | 90% | 2867 fps | 99.6% |
| Lovex S070 | <<locked>> | 90% | 52,054 psi | 86% | 2854 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,512 psi | 74% | 2740 fps | 98.2% |
| Norma 203B | <<locked>> | 82% | 51,648 psi | 86% | 2854 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,346 psi | 90% | 2923 fps | 97.7% |
| Norma MRP | <<locked>> | 98% | 52,924 psi | 88% | 2995 fps | 99% |
| Norma URP | <<locked>> | 92% | 54,128 psi | 90% | 2927 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 52,446 psi | 87% | 2877 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,967 psi | 86% | 2949 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 92% | 53,258 psi | 88% | 2927 fps | 99.5% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 46,673 psi | 78% | 2831 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,854 psi | 61% | 1880 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 53,417 psi | 89% | 2858 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,447 psi | 89% | 2966 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 51,619 psi | 86% | 2907 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 53,940 psi | 90% | 2989 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 42,859 psi | 71% | 2841 fps | 97.2% |
| Rottweil R 902 | <<locked>> | 82% | 53,185 psi | 88% | 2818 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 52,997 psi | 88% | 2858 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 51,329 psi | 85% | 2841 fps | 96.1% |
| Rottweil R 905 | <<locked>> | 96% | 51,634 psi | 86% | 2900 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 88% | 52,489 psi | 87% | 2841 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,317 psi | 90% | 2867 fps | 99.6% |
| Shooters World Precision | <<locked>> | 82% | 51,198 psi | 85% | 2805 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 52,054 psi | 86% | 2854 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 51,184 psi | 85% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,070 psi | 90% | 2749 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,114 psi | 90% | 2818 fps | 99% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 51,169 psi | 85% | 2894 fps | 97.5% |
| Somchem S355 | <<locked>> | 86% | 53,142 psi | 88% | 2858 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 53,606 psi | 89% | 2933 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 52,344 psi | 87% | 2877 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 82% | 53,374 psi | 89% | 2779 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 53,577 psi | 89% | 2792 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,288 psi | 90% | 2828 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 52,924 psi | 88% | 2871 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 51,430 psi | 85% | 2844 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 82% | 51,822 psi | 86% | 2785 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 52,185 psi | 87% | 2877 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 52,431 psi | 87% | 2930 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 53,316 psi | 89% | 2982 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 52,518 psi | 87% | 2835 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,360 psi | 90% | 2943 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 45,353 psi | 75% | 2959 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 52,170 psi | 87% | 2864 fps | 97.5% |
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 2495 | <<locked>> | 80% | 50,850 psi | 84% | 2746 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,733 psi | 81% | 2743 fps | 97.4% |
| Accurate 3100 | <<locked>> | 88% | 35,462 psi | 59% | 2556 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 48,153 psi | 80% | 2749 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,593 psi | 61% | 2605 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 45,411 psi | 75% | 2723 fps | 99.6% |
| ADI AR 2209 | <<locked>> | 90% | 43,352 psi | 72% | 2749 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 98% | 50,778 psi | 84% | 2907 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,299 psi | 84% | 2933 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,919 psi | 76% | 2746 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,110 psi | 82% | 2815 fps | 99.9% |
| Alliant Reloder-16 | 35.6 gr | 80% | 35,607 psi | 59% | 2615 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,553 psi | 67% | 2743 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 43,207 psi | 72% | 2746 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 43,555 psi | 72% | 2795 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,179 psi | 43% | 2365 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,953 psi | 56% | 2595 fps | 95.6% |
| Alliant Reloder-26 | 41.3 gr | 84% | 32,169 psi | 53% | 2595 fps | 95.8% |
| Bofors RP15 | <<locked>> | 96% | 42,656 psi | 71% | 2776 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 46,282 psi | 77% | 2759 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 43,555 psi | 72% | 2795 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 40,698 psi | 68% | 2625 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 46,673 psi | 78% | 2766 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 38,421 psi | 64% | 2648 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 80% | 41,553 psi | 69% | 2674 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,185 psi | 55% | 2510 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 82% | 40,538 psi | 67% | 2717 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,963 psi | 45% | 1644 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,732 psi | 79% | 2756 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,951 psi | 83% | 2779 fps | 98.3% |
| IMR 4350 | <<locked>> | 82% | 38,870 psi | 65% | 2602 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,264 psi | 70% | 2657 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 35,317 psi | 59% | 2562 fps | 97.4% |
| IMR 4895 | <<locked>> | 80% | 50,357 psi | 84% | 2844 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 49,574 psi | 82% | 2802 fps | 95% |
| IMR 7828 SSC | <<locked>> | 98% | 48,312 psi | 80% | 2877 fps | 95.2% |
| Lovex S062 | <<locked>> | 80% | 48,066 psi | 80% | 2756 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,653 psi | 66% | 2605 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 37,927 psi | 63% | 2585 fps | 95.6% |
| Lovex S071 | <<locked>> | 92% | 34,171 psi | 57% | 2526 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 48,457 psi | 81% | 2802 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,976 psi | 73% | 2743 fps | 95.2% |
| Norma MRP | 43 gr | 90% | 39,987 psi | 66% | 2749 fps | 96% |
| Norma URP | <<locked>> | 80% | 36,448 psi | 61% | 2602 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 80% | 48,892 psi | 81% | 2822 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 48,530 psi | 81% | 2890 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 35,404 psi | 59% | 2585 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 96% | 40,059 psi | 67% | 2697 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,615 psi | 46% | 1690 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,818 psi | 78% | 2749 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,091 psi | 72% | 2802 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,216 psi | 60% | 2618 fps | 97.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 35,491 psi | 59% | 2625 fps | 96.6% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,856 psi | 66% | 2769 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 49,893 psi | 83% | 2769 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,497 psi | 72% | 2703 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 48,138 psi | 80% | 2785 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 90% | 42,235 psi | 70% | 2730 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 40,698 psi | 68% | 2625 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,653 psi | 66% | 2605 fps | 97.2% |
| Shooters World Precision | <<locked>> | 80% | 48,066 psi | 80% | 2756 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,927 psi | 63% | 2585 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,686 psi | 74% | 2756 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,802 psi | 74% | 2615 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,928 psi | 65% | 2549 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 41,858 psi | 70% | 2726 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 43,845 psi | 73% | 2703 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 32,895 psi | 55% | 2559 fps | 99.3% |
| Somchem S385 | <<locked>> | 88% | 40,103 psi | 67% | 2654 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 49,980 psi | 83% | 2733 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,285 psi | 84% | 2743 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,872 psi | 70% | 2631 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,826 psi | 63% | 2602 fps | 97.9% |
| Vihtavuori N165 | <<locked>> | 94% | 42,192 psi | 70% | 2684 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 48,660 psi | 81% | 2740 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,405 psi | 62% | 2602 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 28,674 psi | 48% | 2441 fps | 95.3% |
| Vihtavuori N560 | <<locked>> | 96% | 49,559 psi | 82% | 2920 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,202 psi | 62% | 2572 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 38,711 psi | 64% | 2654 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,440 psi | 44% | 2451 fps | 96.1% |
| Winchester Supreme 780 | <<locked>> | 94% | 45,542 psi | 76% | 2753 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 93 powders for .243 Win. loaded with the .243 | 100gr | Winchester Soft-Point. Alliant Reloder-26 delivers the highest muzzle velocity at 3,041 fps; across all powders the maximum-charge window runs from 1,837 fps to 3,041 fps. Accurate 3100 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.243" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, ADI AR 2217 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, Alliant Reloder-16, Norma MRP rank at the top here: for .243 Win. with the .243 | 100gr | Winchester Soft-Point they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.