Load Specifications
Load data in caliber .356 Win. with .358 | 140gr | AERO SB,- smax:11 bullet and 15 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, Lovex S053 and IMR 4227.
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>> | 86% | 46,572 psi | 90% | 2710 fps | 98.9% |
| ADI AR 2205 | <<locked>> | 88% | 45,614 psi | 88% | 2615 fps | 99.7% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 39,595 psi | 76% | 2697 fps | 97.5% |
| Hodgdon LilGun | <<locked>> | 82% | 46,949 psi | 90% | 2766 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,383 psi | 53% | 1670 fps | 100% |
| IMR 4227 | <<locked>> | 96% | 46,557 psi | 90% | 2713 fps | 97.7% |
| Lovex D060 | <<locked>> | 88% | 45,701 psi | 88% | 2710 fps | 95.7% |
| Lovex S053 | <<locked>> | 98% | 46,543 psi | 90% | 2726 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 26,687 psi | 51% | 1709 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 44,585 psi | 86% | 2726 fps | 97.1% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 45,701 psi | 88% | 2710 fps | 95.7% |
| Shooters World SOCOM | <<locked>> | 88% | 45,556 psi | 88% | 2680 fps | 96.5% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 44,962 psi | 86% | 2582 fps | 100% |
| Vihtavuori N110 | <<locked>> | 92% | 46,238 psi | 89% | 2671 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 40,074 psi | 77% | 2671 fps | 98.6% |
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% | 38,130 psi | 73% | 2556 fps | 97.3% |
| ADI AR 2205 | <<locked>> | 80% | 35,679 psi | 69% | 2428 fps | 98.3% |
| ADI AR 2207 | <<locked>> | 94% | 33,098 psi | 64% | 2552 fps | 95.5% |
| Hodgdon LilGun | <<locked>> | 80% | 43,656 psi | 84% | 2717 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 19,885 psi | 38% | 1493 fps | 100% |
| IMR 4227 | 34 gr | 88% | 36,448 psi | 70% | 2520 fps | 95.1% |
| Lovex D060 | <<locked>> | 86% | 43,033 psi | 83% | 2661 fps | 95% |
| Lovex S053 | 30.3 gr | 80% | 27,412 psi | 53% | 2316 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,247 psi | 37% | 1522 fps | 100% |
| ReloadSwiss RS 36 | 36.9 gr | 90% | 36,811 psi | 71% | 2575 fps | 95% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 43,033 psi | 83% | 2661 fps | 95% |
| Shooters World SOCOM | <<locked>> | 84% | 39,987 psi | 77% | 2575 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 26,092 psi | 50% | 2211 fps | 99.9% |
| Vihtavuori N110 | <<locked>> | 80% | 32,387 psi | 62% | 2418 fps | 100% |
| Vihtavuori N120 | <<locked>> | 90% | 29,733 psi | 57% | 2434 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 15 powders for .356 Win. loaded with the .358 | 140gr | AERO SB,- smax:11. Hodgdon LilGun delivers the highest muzzle velocity at 2,766 fps; across all powders the maximum-charge window runs from 1,670 fps to 2,766 fps. ADI AR 2207 gives the best case fill at 100 %, and 15 of the 15 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (359 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. ADI AR 2207, Hodgdon TrailBoss, 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. ReloadSwiss RS 36, Lovex S053, IMR 4227 rank at the top here: for .356 Win. with the .358 | 140gr | AERO SB,- smax:11 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.