Load Specifications
Load data in caliber .405 Win. with .413 | 200gr | Impala LWHV LS bullet and 12 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2207, ReloadSwiss RS 36 and Vihtavuori N120.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AR 2207 | <<locked>> | 96% | 41,017 psi | 89% | 2680 fps | 99% |
| Alliant Reloder-7 | <<locked>> | 94% | 41,568 psi | 90% | 2628 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,776 psi | 65% | 1654 fps | 100% |
| IMR 4198 | <<locked>> | 98% | 39,842 psi | 87% | 2595 fps | 95.8% |
| IMR 4227 | <<locked>> | 88% | 41,292 psi | 90% | 2575 fps | 97.9% |
| Lovex S053 | <<locked>> | 88% | 40,118 psi | 87% | 2559 fps | 99.7% |
| Norma 200 | <<locked>> | 98% | 41,191 psi | 90% | 2680 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,457 psi | 64% | 1696 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 40,001 psi | 87% | 2595 fps | 97.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 39,755 psi | 86% | 2431 fps | 100% |
| Vihtavuori N110 | <<locked>> | 82% | 40,350 psi | 88% | 2503 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 41,263 psi | 90% | 2644 fps | 99.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AR 2207 | 42.3 gr | 82% | 27,804 psi | 60% | 2362 fps | 95.1% |
| Alliant Reloder-7 | <<locked>> | 92% | 39,233 psi | 85% | 2579 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,118 psi | 48% | 1480 fps | 100% |
| IMR 4198 | <<locked>> | 96% | 37,768 psi | 82% | 2549 fps | 95.1% |
| IMR 4227 | <<locked>> | 80% | 33,054 psi | 72% | 2398 fps | 95.6% |
| Lovex S053 | <<locked>> | 80% | 32,503 psi | 71% | 2392 fps | 98.6% |
| Norma 200 | <<locked>> | 94% | 36,695 psi | 80% | 2585 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,857 psi | 48% | 1516 fps | 100% |
| ReloadSwiss RS 36 | 44 gr | 82% | 33,707 psi | 73% | 2457 fps | 95.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 30,806 psi | 67% | 2257 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 38,101 psi | 83% | 2464 fps | 100% |
| Vihtavuori N120 | 41.3 gr | 80% | 26,716 psi | 58% | 2300 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 18 powders for .405 Win. loaded with the .413 | 200gr | Impala LWHV LS. ADI AR 2207 delivers the highest muzzle velocity at 2,680 fps; across all powders the maximum-charge window runs from 1,654 fps to 2,680 fps. Alliant AR-Comp gives the best case fill at 100 %, and 18 of the 18 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (317 MPa), the top charges use 64–90 %, leaving at least 10 % headroom. Alliant AR-Comp, Alliant Reloder-10x, 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. ADI AR 2207, ReloadSwiss RS 36, Vihtavuori N120 rank at the top here: for .405 Win. with the .413 | 200gr | Impala LWHV LS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant AR-Comp, Alliant Reloder-10x, Baschieri & Pellagri 106 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.