Load Specifications
Load data in caliber .356 Win. with .356 | 125gr | SNS Coated Bullets RN bullet and 14 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Lovex S053, IMR 4227 and Vihtavuori N110.
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>> | 84% | 45,716 psi | 88% | 2897 fps | 98.5% |
| ADI AR 2205 | <<locked>> | 86% | 45,020 psi | 87% | 2802 fps | 99.5% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 42,279 psi | 81% | 2943 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,094 psi | 54% | 1834 fps | 100% |
| IMR 4227 | <<locked>> | 94% | 45,963 psi | 88% | 2907 fps | 97.2% |
| Lovex D063 | <<locked>> | 86% | 44,744 psi | 86% | 2861 fps | 95.9% |
| Lovex S053 | <<locked>> | 96% | 46,209 psi | 89% | 2923 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,427 psi | 53% | 1870 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 44,150 psi | 85% | 2917 fps | 96.7% |
| Shooters World Blackout | <<locked>> | 84% | 46,789 psi | 90% | 2920 fps | 95.8% |
| Shooters World SOCOM | <<locked>> | 86% | 44,744 psi | 86% | 2861 fps | 95.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 44,831 psi | 86% | 2776 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 46,035 psi | 89% | 2871 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 42,641 psi | 82% | 2913 fps | 98.8% |
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 | <<locked>> | 80% | 39,987 psi | 77% | 2782 fps | 97.4% |
| ADI AR 2205 | <<locked>> | 80% | 37,521 psi | 72% | 2654 fps | 98.4% |
| ADI AR 2207 | <<locked>> | 92% | 33,243 psi | 64% | 2733 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,450 psi | 39% | 1637 fps | 100% |
| IMR 4227 | 38.3 gr | 88% | 38,392 psi | 74% | 2749 fps | 95.2% |
| Lovex D063 | <<locked>> | 84% | 41,843 psi | 80% | 2805 fps | 95.1% |
| Lovex S053 | 34.1 gr | 80% | 29,109 psi | 56% | 2530 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,102 psi | 39% | 1677 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 39,160 psi | 75% | 2812 fps | 95.3% |
| Shooters World Blackout | <<locked>> | 82% | 43,947 psi | 85% | 2867 fps | 95.1% |
| Shooters World SOCOM | <<locked>> | 84% | 41,843 psi | 80% | 2805 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 27,731 psi | 53% | 2421 fps | 100% |
| Vihtavuori N110 | 32.6 gr | 80% | 34,505 psi | 66% | 2648 fps | 100% |
| Vihtavuori N120 | <<locked>> | 88% | 29,863 psi | 57% | 2608 fps | 95% |
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 20 powders for .356 Win. loaded with the .356 | 125gr | SNS Coated Bullets RN. ADI AR 2207 delivers the highest muzzle velocity at 2,943 fps; across all powders the maximum-charge window runs from 1,834 fps to 2,943 fps. ADI AR 2207 gives the best case fill at 100 %, and 20 of the 20 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (359 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. ADI AR 2207, Alliant Reloder-7, 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. Lovex S053, IMR 4227, Vihtavuori N110 rank at the top here: for .356 Win. with the .356 | 125gr | SNS Coated Bullets RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 1680, IMR 4198, Norma 200 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.