Load Specifications
Load data in caliber .240 Flang. N.E. with .243 | 100gr | Sierra Pro-Hunter bullet and 29 powders. The key underlying parameters are shown in the table above.
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>> | 92% | 39,900 psi | 86% | 2822 fps | 97.1% |
| Accurate 4350 | <<locked>> | 84% | 41,553 psi | 90% | 2877 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 84% | 40,190 psi | 87% | 2884 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 40,582 psi | 87% | 2910 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 98% | 40,393 psi | 87% | 2930 fps | 98.1% |
| Alliant Reloder-26 | <<locked>> | 90% | 39,189 psi | 84% | 2949 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 82% | 40,915 psi | 88% | 2867 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 40,176 psi | 87% | 2822 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,318 psi | 78% | 1926 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 39,711 psi | 86% | 2822 fps | 98.6% |
| Lovex S065 | <<locked>> | 82% | 41,771 psi | 90% | 2812 fps | 97.8% |
| Lovex S070 | <<locked>> | 82% | 40,059 psi | 86% | 2792 fps | 96.3% |
| Lovex S071 | <<locked>> | 98% | 40,756 psi | 88% | 2838 fps | 97.4% |
| Norma URP | <<locked>> | 84% | 41,321 psi | 89% | 2874 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 84% | 39,929 psi | 86% | 2851 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,898 psi | 80% | 1972 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 41,452 psi | 89% | 2897 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 40,321 psi | 87% | 2910 fps | 98.2% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,916 psi | 90% | 3002 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 41,771 psi | 90% | 2812 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 82% | 40,059 psi | 86% | 2792 fps | 96.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,075 psi | 89% | 2753 fps | 96.4% |
| Somchem S365 | <<locked>> | 86% | 39,798 psi | 86% | 2877 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 39,972 psi | 86% | 2808 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 82% | 39,508 psi | 85% | 2812 fps | 98.2% |
| Vihtavuori N555 | <<locked>> | 90% | 39,769 psi | 86% | 2877 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 39,363 psi | 85% | 2779 fps | 99.7% |
| Winchester 760 | <<locked>> | 82% | 40,915 psi | 88% | 2867 fps | 96.4% |
| Winchester StaBALL HD | <<locked>> | 98% | 41,568 psi | 90% | 3071 fps | 100% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 88% | 34,954 psi | 75% | 2703 fps | 95.5% |
| Accurate 4350 | <<locked>> | 80% | 36,027 psi | 78% | 2753 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,346 psi | 76% | 2762 fps | 97.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 25,947 psi | 56% | 2500 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 92% | 33,446 psi | 72% | 2743 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 84% | 31,734 psi | 68% | 2743 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 38,232 psi | 82% | 2805 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,996 psi | 71% | 2657 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 58% | 1722 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 34,853 psi | 75% | 2707 fps | 97.3% |
| Lovex S065 | <<locked>> | 80% | 39,349 psi | 85% | 2756 fps | 97.2% |
| Lovex S070 | <<locked>> | 80% | 37,536 psi | 81% | 2733 fps | 95.5% |
| Lovex S071 | <<locked>> | 92% | 33,721 psi | 73% | 2674 fps | 95% |
| Norma URP | <<locked>> | 80% | 36,013 psi | 78% | 2749 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 80% | 34,925 psi | 75% | 2730 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,441 psi | 59% | 1762 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,839 psi | 77% | 2769 fps | 97.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 35,070 psi | 76% | 2772 fps | 96.4% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 39,175 psi | 84% | 2930 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,349 psi | 85% | 2756 fps | 97.2% |
| Shooters World SW4350 | <<locked>> | 80% | 37,536 psi | 81% | 2733 fps | 95.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,464 psi | 83% | 2694 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 32,460 psi | 70% | 2703 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 37,318 psi | 80% | 2746 fps | 97.8% |
| Vihtavuori N550 | <<locked>> | 80% | 36,985 psi | 80% | 2753 fps | 97.5% |
| Vihtavuori N555 | <<locked>> | 80% | 28,355 psi | 61% | 2582 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,680 psi | 79% | 2720 fps | 99.4% |
| Winchester 760 | <<locked>> | 80% | 38,232 psi | 82% | 2805 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 26,005 psi | 56% | 2582 fps | 95.7% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 29 powders for .240 Flang. N.E. loaded with the .243 | 100gr | Sierra Pro-Hunter. Winchester StaBALL HD delivers the highest muzzle velocity at 3,071 fps; across all powders the maximum-charge window runs from 1,926 fps to 3,071 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 29 of the 29 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 1:10.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, ReloadSwiss RS 76 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.