Load Specifications
Load data in caliber .240 Flang. N.E. with .243 | 65gr | Berger ND bullet and 23 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 2495 | <<locked>> | 82% | 40,306 psi | 87% | 3327 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 40,596 psi | 87% | 3360 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 39,363 psi | 85% | 3333 fps | 96.5% |
| Bofors RP3 | <<locked>> | 86% | 41,930 psi | 90% | 3406 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 41,075 psi | 89% | 3383 fps | 96.6% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 40,306 psi | 87% | 3399 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,737 psi | 75% | 2352 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 41,626 psi | 90% | 3363 fps | 97.6% |
| Norma 203B | <<locked>> | 84% | 41,814 psi | 90% | 3402 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 84% | 41,669 psi | 90% | 3409 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,998 psi | 75% | 2402 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 41,930 psi | 90% | 3510 fps | 99% |
| Rottweil R 902 | <<locked>> | 82% | 41,104 psi | 89% | 3327 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 88% | 41,800 psi | 90% | 3392 fps | 97% |
| Shooters World Precision | <<locked>> | 84% | 41,626 psi | 90% | 3363 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 41,974 psi | 90% | 3291 fps | 99.8% |
| Somchem S355 | <<locked>> | 86% | 39,914 psi | 86% | 3333 fps | 96.2% |
| Somchem S365 | <<locked>> | 96% | 40,277 psi | 87% | 3442 fps | 97.9% |
| Vihtavuori N135 | <<locked>> | 82% | 40,118 psi | 86% | 3327 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 41,075 psi | 89% | 3323 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 88% | 40,828 psi | 88% | 3323 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 82% | 39,827 psi | 86% | 3304 fps | 98.9% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 39,392 psi | 85% | 3284 fps | 96.3% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 37,623 psi | 81% | 3261 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 35,505 psi | 77% | 3228 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 36,869 psi | 79% | 3264 fps | 95.6% |
| Bofors RP3 | <<locked>> | 82% | 36,405 psi | 78% | 3261 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 38,435 psi | 83% | 3314 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,768 psi | 81% | 3330 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,846 psi | 56% | 2116 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 36,550 psi | 79% | 3228 fps | 96% |
| Norma 203B | <<locked>> | 82% | 39,160 psi | 84% | 3333 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 82% | 38,812 psi | 84% | 3333 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,918 psi | 56% | 2159 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 31,763 psi | 68% | 3192 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 38,508 psi | 83% | 3261 fps | 96.6% |
| Rottweil R 903 | <<locked>> | 84% | 36,535 psi | 79% | 3255 fps | 95.3% |
| Shooters World Precision | <<locked>> | 80% | 36,550 psi | 79% | 3228 fps | 96% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,563 psi | 74% | 3107 fps | 98.7% |
| Somchem S355 | <<locked>> | 84% | 37,652 psi | 81% | 3274 fps | 95.4% |
| Somchem S365 | <<locked>> | 90% | 33,040 psi | 71% | 3225 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 37,420 psi | 81% | 3261 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 38,450 psi | 83% | 3258 fps | 99% |
| Vihtavuori N150 | <<locked>> | 82% | 33,417 psi | 72% | 3123 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 37,101 psi | 80% | 3232 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 36,811 psi | 79% | 3209 fps | 95.2% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 49 powders for .240 Flang. N.E. loaded with the .243 | 65gr | Berger ND. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,510 fps; across all powders the maximum-charge window runs from 2,352 fps to 3,510 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 49 of the 49 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (320 MPa), the top charges use 75–90 %, leaving at least 10 % headroom. The 65.0 gr projectile in 0.243" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, Hodgdon TrailBoss 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. As outliers, Accurate 4350, ADI AR 2208, Alliant Power Pro 2000-MR 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.