Load Specifications
Load data in caliber .405 Win. with .416 | 270gr | Impala LW CFN bullet and 20 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-10x, Norma 200 and ADI AR 2207.
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 |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 84% | 40,379 psi | 88% | 2185 fps | 98.1% |
| Accurate 2015ᴾ | <<locked>> | 100% | 40,814 psi | 89% | 2277 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 90% | 41,133 psi | 89% | 2182 fps | 95.6% |
| ADI AR 2207 | <<locked>> | 88% | 39,900 psi | 87% | 2251 fps | 100% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 37,884 psi | 82% | 2290 fps | 98.8% |
| Alliant Reloder-10x | <<locked>> | 94% | 39,624 psi | 86% | 2274 fps | 98.2% |
| Alliant Reloder-7 | <<locked>> | 86% | 39,653 psi | 86% | 2205 fps | 98.5% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 41,191 psi | 90% | 2215 fps | 96% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,372 psi | 68% | 1404 fps | 100% |
| IMR 4198 | <<locked>> | 92% | 40,001 psi | 87% | 2224 fps | 98.9% |
| IMR 4227 | <<locked>> | 82% | 40,857 psi | 89% | 2182 fps | 99.7% |
| Lovex S053 | <<locked>> | 82% | 40,408 psi | 88% | 2159 fps | 100% |
| Norma 200 | <<locked>> | 90% | 40,190 psi | 87% | 2264 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,067 psi | 68% | 1437 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 40,219 psi | 87% | 2208 fps | 99.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 39,842 psi | 87% | 2031 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 40,582 psi | 88% | 2264 fps | 96.3% |
| Vihtavuori N120 | <<locked>> | 88% | 40,030 psi | 87% | 2218 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 40,683 psi | 88% | 2231 fps | 98.1% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 39,595 psi | 86% | 2215 fps | 96.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 35,882 psi | 78% | 2103 fps | 97% |
| Accurate 2015 | <<locked>> | 94% | 34,330 psi | 75% | 2159 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 88% | 38,885 psi | 85% | 2142 fps | 95% |
| ADI AR 2207 | 38.6 gr | 80% | 31,705 psi | 69% | 2096 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 90% | 28,761 psi | 63% | 2080 fps | 95.7% |
| Alliant Reloder-10x | 40.9 gr | 84% | 29,878 psi | 65% | 2073 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 33,460 psi | 73% | 2087 fps | 97.1% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 38,856 psi | 84% | 2172 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,250 psi | 51% | 1253 fps | 100% |
| IMR 4198 | <<locked>> | 80% | 29,153 psi | 63% | 1995 fps | 95.8% |
| IMR 4227 | <<locked>> | 80% | 38,696 psi | 84% | 2142 fps | 99.5% |
| Lovex S053 | <<locked>> | 80% | 38,116 psi | 83% | 2123 fps | 100% |
| Norma 200 | 40.4 gr | 80% | 30,458 psi | 66% | 2070 fps | 96.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,192 psi | 50% | 1286 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 37,956 psi | 83% | 2169 fps | 99.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 35,984 psi | 78% | 1972 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 36,303 psi | 79% | 2182 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 31,865 psi | 69% | 2070 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 86% | 30,850 psi | 67% | 2044 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 96% | 35,621 psi | 77% | 2142 fps | 95.5% |
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 41 powders for .405 Win. loaded with the .416 | 270gr | Impala LW CFN. Hodgdon H322 delivers the highest muzzle velocity at 2,303 fps; across all powders the maximum-charge window runs from 1,404 fps to 2,303 fps. Accurate 2015 gives the best case fill at 100 %, and 41 of the 41 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (317 MPa), the top charges use 65–90 %, leaving at least 10 % headroom. Accurate 2015, Accurate 2495, Accurate 2520 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-10x, Norma 200, ADI AR 2207 rank at the top here: for .405 Win. with the .416 | 270gr | Impala LW CFN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2460, Accurate 2495, Accurate 2520 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.