Load Specifications
Load data in caliber .356 Win. with .358 | 140gr | Hammer Stone Hammer bullet and 17 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 5744 | <<locked>> | 86% | 46,789 psi | 90% | 2749 fps | 96.3% |
| Accurate No. 11 FS | <<locked>> | 84% | 44,556 psi | 86% | 2694 fps | 98.8% |
| ADI AR 2205 | <<locked>> | 88% | 46,644 psi | 90% | 2648 fps | 99.8% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 41,147 psi | 79% | 2743 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,615 psi | 53% | 1686 fps | 100% |
| IMR 4227 | <<locked>> | 94% | 44,759 psi | 86% | 2703 fps | 97.6% |
| Lovex D060 | <<locked>> | 88% | 46,789 psi | 90% | 2749 fps | 96.3% |
| Lovex D063 | <<locked>> | 88% | 46,746 psi | 90% | 2717 fps | 97% |
| Lovex S053 | <<locked>> | 96% | 45,223 psi | 87% | 2720 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 26,919 psi | 52% | 1726 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 96% | 45,905 psi | 88% | 2769 fps | 97.7% |
| Shooters World Blackout | <<locked>> | 84% | 45,803 psi | 88% | 2720 fps | 96.2% |
| Shooters World Buffalo Rifle | <<locked>> | 88% | 46,789 psi | 90% | 2749 fps | 96.3% |
| Shooters World SOCOM | <<locked>> | 88% | 46,746 psi | 90% | 2717 fps | 97% |
| SNPE Vectan BA6 1/2ᴾ | <<locked>> | 100% | 46,195 psi | 89% | 2615 fps | 100% |
| Vihtavuori N110 | <<locked>> | 90% | 45,165 psi | 87% | 2667 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 41,611 psi | 80% | 2717 fps | 99.1% |
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 5744 | <<locked>> | 84% | 44,121 psi | 85% | 2697 fps | 95.6% |
| Accurate No. 11 FS | <<locked>> | 80% | 38,899 psi | 75% | 2589 fps | 97.7% |
| ADI AR 2205 | <<locked>> | 80% | 36,477 psi | 70% | 2461 fps | 98.7% |
| ADI AR 2207 | <<locked>> | 92% | 31,966 psi | 61% | 2539 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,030 psi | 39% | 1506 fps | 100% |
| IMR 4227 | 34.2 gr | 86% | 35,288 psi | 68% | 2510 fps | 95% |
| Lovex D060 | <<locked>> | 86% | 44,121 psi | 85% | 2697 fps | 95.6% |
| Lovex D063 | <<locked>> | 84% | 40,857 psi | 79% | 2612 fps | 95.6% |
| Lovex S053 | 31.1 gr | 80% | 28,050 psi | 54% | 2346 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,406 psi | 37% | 1539 fps | 100% |
| ReloadSwiss RS 36 | 37.2 gr | 88% | 35,868 psi | 69% | 2569 fps | 95% |
| Shooters World Blackout | <<locked>> | 82% | 42,786 psi | 82% | 2664 fps | 95.4% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 44,121 psi | 85% | 2697 fps | 95.6% |
| Shooters World SOCOM | <<locked>> | 84% | 40,857 psi | 79% | 2612 fps | 95.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 26,818 psi | 52% | 2244 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 33,214 psi | 64% | 2448 fps | 100% |
| Vihtavuori N120 | <<locked>> | 88% | 28,805 psi | 55% | 2425 fps | 95.4% |
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 21 powders for .356 Win. loaded with the .358 | 140gr | Hammer Stone Hammer. ReloadSwiss RS 36 delivers the highest muzzle velocity at 2,769 fps; across all powders the maximum-charge window runs from 1,686 fps to 2,769 fps. ADI AR 2207 gives the best case fill at 100 %, and 21 of the 21 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (359 MPa), the top charges use 52–90 %, 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. ReloadSwiss RS 36, Lovex S053, IMR 4227 rank at the top here: for .356 Win. with the .358 | 140gr | Hammer Stone Hammer 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.