Load Specifications
Load data in caliber .356 Win. with .358 | 178gr | Hammer Stone Hammer bullet and 20 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 36, Alliant Reloder-7 and Lovex S053.
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 1680 | <<locked>> | 94% | 45,092 psi | 87% | 2349 fps | 96.7% |
| Accurate No. 11 FS | <<locked>> | 82% | 44,802 psi | 86% | 2339 fps | 99.7% |
| ADI AR 2205 | <<locked>> | 86% | 46,630 psi | 90% | 2290 fps | 100% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 44,411 psi | 85% | 2434 fps | 99.7% |
| Alliant Reloder-7 | <<locked>> | 98% | 44,498 psi | 86% | 2392 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,384 psi | 55% | 1444 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 40,669 psi | 78% | 2326 fps | 96.8% |
| IMR 4227 | <<locked>> | 92% | 45,179 psi | 87% | 2352 fps | 99% |
| Lovex D060 | <<locked>> | 86% | 46,514 psi | 89% | 2385 fps | 98% |
| Lovex D063 | <<locked>> | 82% | 45,701 psi | 88% | 2362 fps | 97.9% |
| Lovex S053 | <<locked>> | 94% | 45,484 psi | 87% | 2356 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 40,886 psi | 79% | 2388 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,905 psi | 54% | 1480 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 94% | 46,557 psi | 90% | 2415 fps | 99.1% |
| Shooters World Blackout | <<locked>> | 82% | 45,701 psi | 88% | 2362 fps | 97.9% |
| Shooters World Buffalo Rifle | <<locked>> | 86% | 46,514 psi | 89% | 2385 fps | 98% |
| Shooters World SOCOM | <<locked>> | 86% | 46,746 psi | 90% | 2365 fps | 98.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 98% | 47,050 psi | 90% | 2257 fps | 100% |
| Vihtavuori N110 | <<locked>> | 88% | 45,411 psi | 87% | 2297 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 44,744 psi | 86% | 2405 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 1680 | <<locked>> | 90% | 39,436 psi | 76% | 2257 fps | 95.3% |
| Accurate No. 11 FS | <<locked>> | 80% | 41,916 psi | 81% | 2293 fps | 99.4% |
| ADI AR 2205 | <<locked>> | 80% | 38,754 psi | 75% | 2169 fps | 99.8% |
| ADI AR 2207 | <<locked>> | 84% | 27,021 psi | 52% | 2090 fps | 95.6% |
| Alliant Reloder-7 | 33.9 gr | 92% | 37,014 psi | 71% | 2260 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,769 psi | 40% | 1289 fps | 100% |
| IMR 4198 | <<locked>> | 96% | 36,230 psi | 70% | 2241 fps | 95.4% |
| IMR 4227 | <<locked>> | 80% | 31,314 psi | 60% | 2096 fps | 95.7% |
| Lovex D060 | <<locked>> | 80% | 39,073 psi | 75% | 2254 fps | 96.3% |
| Lovex D063 | <<locked>> | 80% | 42,728 psi | 82% | 2316 fps | 97.4% |
| Lovex S053 | 27.3 gr | 80% | 30,182 psi | 58% | 2083 fps | 98.6% |
| Norma 200 | <<locked>> | 96% | 35,940 psi | 69% | 2300 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,262 psi | 39% | 1319 fps | 100% |
| ReloadSwiss RS 36 | 29.7 gr | 80% | 29,936 psi | 58% | 2110 fps | 95% |
| Shooters World Blackout | <<locked>> | 80% | 42,728 psi | 82% | 2316 fps | 97.4% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 39,073 psi | 75% | 2254 fps | 96.3% |
| Shooters World SOCOM | <<locked>> | 80% | 38,203 psi | 73% | 2224 fps | 96.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 28,761 psi | 55% | 1969 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 35,853 psi | 69% | 2152 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 24,352 psi | 47% | 1991 fps | 95.6% |
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 .358 | 178gr | Hammer Stone Hammer. ADI AR 2207 delivers the highest muzzle velocity at 2,434 fps; across all powders the maximum-charge window runs from 1,444 fps to 2,434 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 54–90 %, leaving at least 10 % headroom. ADI AR 2207, Hodgdon TrailBoss, IMR 4198 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, Alliant Reloder-7, Lovex S053 rank at the top here: for .356 Win. with the .358 | 178gr | Hammer Stone Hammer 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.