Load Specifications
Load data in caliber .240 Flang. N.E. with .243 | 95gr | ShellHouse Castings SP Hard Cast bullet and 31 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 4350 and ReloadSwiss RS 70.
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 4350 | <<locked>> | 88% | 39,871 psi | 86% | 2910 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 88% | 39,798 psi | 86% | 2876 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 84% | 39,508 psi | 85% | 2891 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 39,102 psi | 84% | 2878 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 96% | 40,741 psi | 88% | 2976 fps | 97.3% |
| Bofors RP3 | <<locked>> | 82% | 41,742 psi | 90% | 2850 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 41,872 psi | 90% | 2868 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,492 psi | 79% | 1920 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 41,466 psi | 89% | 2861 fps | 98.8% |
| IMR 4831 | <<locked>> | 92% | 39,537 psi | 85% | 2824 fps | 97.3% |
| Lovex S065 | <<locked>> | 86% | 41,176 psi | 89% | 2801 fps | 96.2% |
| Norma URP | <<locked>> | 88% | 40,277 psi | 87% | 2854 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 90% | 41,959 psi | 90% | 2899 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,230 psi | 78% | 1964 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 39,218 psi | 85% | 2897 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 40,059 psi | 86% | 2872 fps | 97% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 39,769 psi | 86% | 2887 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 84% | 41,945 psi | 90% | 2848 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 41,176 psi | 89% | 2801 fps | 96.2% |
| Shooters World SW4350 | <<locked>> | 88% | 41,901 psi | 90% | 2894 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 40,959 psi | 88% | 2853 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 41,713 psi | 90% | 2733 fps | 100% |
| Somchem S355 | <<locked>> | 82% | 40,045 psi | 86% | 2797 fps | 98.8% |
| Somchem S365 | <<locked>> | 92% | 41,452 psi | 89% | 2922 fps | 99.8% |
| Unknown powder | <<locked>> | 86% | 40,959 psi | 88% | 2860 fps | 96.8% |
| Vihtavuori N150 | <<locked>> | 88% | 41,437 psi | 89% | 2800 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 86% | 41,017 psi | 88% | 2831 fps | 97.4% |
| Vihtavuori N550 | <<locked>> | 86% | 41,568 psi | 90% | 2879 fps | 97.4% |
| Vihtavuori N555 | <<locked>> | 96% | 40,350 psi | 87% | 2900 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 39,233 psi | 85% | 2778 fps | 98.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,479 psi | 83% | 2950 fps | 99.4% |
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 4350 | 38.3 gr | 82% | 31,908 psi | 69% | 2713 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 84% | 34,650 psi | 75% | 2741 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,098 psi | 73% | 2752 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,052 psi | 65% | 2632 fps | 95.3% |
| Alliant Reloder-26 | 47.2 gr | 94% | 37,782 psi | 81% | 2902 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 39,001 psi | 84% | 2791 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,733 psi | 64% | 2570 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,252 psi | 57% | 1713 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,798 psi | 84% | 2802 fps | 98.2% |
| IMR 4831 | <<locked>> | 88% | 34,505 psi | 74% | 2704 fps | 95.6% |
| Lovex S065 | <<locked>> | 84% | 38,595 psi | 83% | 2743 fps | 95.4% |
| Norma URP | <<locked>> | 84% | 34,882 psi | 75% | 2726 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 88% | 39,334 psi | 85% | 2839 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,411 psi | 57% | 1751 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,405 psi | 78% | 2828 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,418 psi | 74% | 2736 fps | 95% |
| ReloadSwiss RS 70 | 42.8 gr | 86% | 36,970 psi | 80% | 2817 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 36,593 psi | 79% | 2729 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,595 psi | 83% | 2743 fps | 95.4% |
| Shooters World SW4350 | <<locked>> | 86% | 39,291 psi | 85% | 2835 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,029 psi | 82% | 2789 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,305 psi | 85% | 2687 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 37,449 psi | 81% | 2739 fps | 98.2% |
| Somchem S365 | <<locked>> | 80% | 26,992 psi | 58% | 2540 fps | 95.5% |
| Unknown powder | <<locked>> | 84% | 38,276 psi | 82% | 2799 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 80% | 31,836 psi | 69% | 2577 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 82% | 35,607 psi | 77% | 2707 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 82% | 36,172 psi | 78% | 2752 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 90% | 32,460 psi | 70% | 2707 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,517 psi | 68% | 2584 fps | 96.5% |
| Winchester StaBALL HD | <<locked>> | 94% | 30,298 psi | 65% | 2720 fps | 96.2% |
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 31 powders for .240 Flang. N.E. loaded with the .243 | 95gr | ShellHouse Castings SP Hard Cast. Alliant Reloder-26 delivers the highest muzzle velocity at 2,976 fps; across all powders the maximum-charge window runs from 1,920 fps to 2,976 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 31 of the 31 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 95.0 gr projectile in 0.243" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Winchester StaBALL HD 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 4350, ReloadSwiss RS 70 rank at the top here: for .240 Flang. N.E. with the .243 | 95gr | ShellHouse Castings SP Hard Cast 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.