Load Specifications
Load data in caliber .356 Win. with .355 | 123gr | MEN FMJ RN bullet and 9 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate No. 11 FS, Vihtavuori N110 and ADI AR 2205.
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: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 11 FS | <<locked>> | 90% | 45,716 psi | 88% | 2808 fps | 96.8% |
| ADI AR 2205 | <<locked>> | 92% | 45,223 psi | 87% | 2717 fps | 98.4% |
| Hodgdon LilGun | <<locked>> | 86% | 45,295 psi | 87% | 2887 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 26,165 psi | 50% | 1732 fps | 100% |
| Lovex S040 | <<locked>> | 86% | 46,963 psi | 90% | 2769 fps | 100% |
| Lovex S053ᴾ | <<locked>> | 100% | 42,235 psi | 81% | 2769 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 25,454 psi | 49% | 1772 fps | 100% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 39,059 psi | 75% | 2618 fps | 100% |
| Vihtavuori N110 | <<locked>> | 96% | 45,020 psi | 87% | 2789 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 11 FS | 34.9 gr | 86% | 40,132 psi | 77% | 2703 fps | 95.4% |
| ADI AR 2205 | 30.6 gr | 82% | 33,620 psi | 65% | 2480 fps | 95.6% |
| Hodgdon LilGun | <<locked>> | 80% | 36,564 psi | 70% | 2730 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 19,072 psi | 37% | 1549 fps | 100% |
| Lovex S040 | <<locked>> | 80% | 39,320 psi | 76% | 2628 fps | 99.8% |
| Lovex S053 | <<locked>> | 92% | 33,707 psi | 65% | 2585 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 18,492 psi | 36% | 1581 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 22,945 psi | 44% | 2228 fps | 98.3% |
| Vihtavuori N110 | 26.9 gr | 80% | 28,094 psi | 54% | 2431 fps | 98.5% |
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 9 powders for .356 Win. loaded with the .355 | 123gr | MEN FMJ RN. Hodgdon LilGun delivers the highest muzzle velocity at 2,887 fps; across all powders the maximum-charge window runs from 1,732 fps to 2,887 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 9 of the 9 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (359 MPa), the top charges use 49–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, Lovex S053, ReloadSwiss RS 14 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. Accurate No. 11 FS, Vihtavuori N110, ADI AR 2205 rank at the top here: for .356 Win. with the .355 | 123gr | MEN FMJ RN 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.