Load Specifications
Load data in caliber .240 Flang. N.E. with .243 | 100gr | Sierra Tipped GameKing bullet and 28 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Alliant Reloder-26 and Alliant Reloder-23.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 41,162 psi | 89% | 2841 fps | 97.3% |
| Accurate 4350 | <<locked>> | 84% | 40,001 psi | 86% | 2838 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 41,568 psi | 90% | 2910 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 82% | 41,539 psi | 90% | 2927 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 41,858 psi | 90% | 2933 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,582 psi | 90% | 2949 fps | 98.2% |
| Alliant Reloder-26 | <<locked>> | 92% | 40,495 psi | 87% | 2972 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 41,553 psi | 90% | 2848 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,071 psi | 78% | 1909 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 41,060 psi | 88% | 2844 fps | 98.7% |
| Lovex S065 | <<locked>> | 82% | 40,872 psi | 88% | 2782 fps | 97.4% |
| Lovex S070 | <<locked>> | 84% | 41,408 psi | 89% | 2815 fps | 96.5% |
| Lovex S071 | <<locked>> | 98% | 39,407 psi | 85% | 2802 fps | 96.8% |
| Norma MRP | <<locked>> | 92% | 40,654 psi | 88% | 2936 fps | 96% |
| Norma URP | <<locked>> | 84% | 39,813 psi | 86% | 2835 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 86% | 41,307 psi | 89% | 2877 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,666 psi | 79% | 1955 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 40,016 psi | 86% | 2864 fps | 98.2% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 41,858 psi | 90% | 2936 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 40,872 psi | 88% | 2782 fps | 97.4% |
| Shooters World SW4350 | <<locked>> | 84% | 41,408 psi | 89% | 2815 fps | 96.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,045 psi | 86% | 2720 fps | 95.9% |
| Somchem S365 | <<locked>> | 88% | 41,176 psi | 89% | 2904 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 41,321 psi | 89% | 2831 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 84% | 40,828 psi | 88% | 2835 fps | 98.3% |
| Vihtavuori N555 | <<locked>> | 92% | 40,857 psi | 88% | 2897 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 40,857 psi | 88% | 2802 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 98% | 39,958 psi | 86% | 3025 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 35,882 psi | 77% | 2723 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 34,795 psi | 75% | 2717 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,476 psi | 74% | 2733 fps | 97.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,725 psi | 83% | 2864 fps | 99.5% |
| Alliant Reloder-23 | 38.2 gr | 82% | 26,847 psi | 58% | 2526 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,490 psi | 74% | 2766 fps | 95.5% |
| Alliant Reloder-26 | 44 gr | 86% | 32,851 psi | 71% | 2772 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,865 psi | 69% | 2621 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,919 psi | 58% | 1709 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 33,692 psi | 73% | 2671 fps | 96.8% |
| Lovex S065 | <<locked>> | 80% | 38,232 psi | 82% | 2723 fps | 96.7% |
| Lovex S070 | <<locked>> | 82% | 38,972 psi | 84% | 2759 fps | 95.7% |
| Lovex S071 | <<locked>> | 94% | 34,650 psi | 75% | 2694 fps | 95.2% |
| Norma MRP | <<locked>> | 90% | 37,971 psi | 82% | 2867 fps | 95% |
| Norma URP | <<locked>> | 80% | 34,838 psi | 75% | 2717 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 82% | 36,303 psi | 78% | 2759 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,514 psi | 59% | 1755 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,679 psi | 75% | 2736 fps | 96.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 33,895 psi | 73% | 2733 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,232 psi | 82% | 2723 fps | 96.7% |
| Shooters World SW4350 | <<locked>> | 82% | 38,972 psi | 84% | 2759 fps | 95.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,420 psi | 81% | 2661 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 31,299 psi | 67% | 2667 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 80% | 36,143 psi | 78% | 2713 fps | 97.3% |
| Vihtavuori N550 | <<locked>> | 80% | 35,868 psi | 77% | 2720 fps | 97% |
| Vihtavuori N555 | <<locked>> | 82% | 29,080 psi | 63% | 2602 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,549 psi | 77% | 2684 fps | 99.1% |
| Winchester StaBALL HD | 42.2 gr | 86% | 26,818 psi | 58% | 2608 fps | 96.1% |
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 28 powders for .240 Flang. N.E. loaded with the .243 | 100gr | Sierra Tipped GameKing. Winchester StaBALL HD delivers the highest muzzle velocity at 3,025 fps; across all powders the maximum-charge window runs from 1,909 fps to 3,025 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 28 of the 28 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (320 MPa), the top charges use 78–90 %, leaving at least 10 % headroom. The 100.0 gr projectile in 0.243" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Hodgdon TrailBoss, ReloadSwiss RS 14 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. Winchester StaBALL HD, Alliant Reloder-26, Alliant Reloder-23 rank at the top here: for .240 Flang. N.E. with the .243 | 100gr | Sierra Tipped GameKing 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.