Load Specifications
Load data in caliber .356 Win. with .358 | 180gr | Barnes X S bullet and 18 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2207, Alliant Reloder-7 and ReloadSwiss RS 36.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 92% | 45,890 psi | 88% | 2313 fps | 96.7% |
| ADI AR 2205 | <<locked>> | 82% | 44,585 psi | 86% | 2215 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 46,122 psi | 89% | 2411 fps | 99.7% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 40,553 psi | 78% | 2336 fps | 95.8% |
| Alliant Reloder-7 | <<locked>> | 96% | 46,209 psi | 89% | 2362 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,255 psi | 58% | 1434 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 44,150 psi | 85% | 2339 fps | 97.5% |
| IMR 4227 | <<locked>> | 90% | 45,919 psi | 88% | 2313 fps | 99% |
| Lovex D060 | <<locked>> | 82% | 44,527 psi | 86% | 2303 fps | 97.5% |
| Lovex S053 | <<locked>> | 90% | 44,628 psi | 86% | 2290 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 46,441 psi | 89% | 2418 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 30,095 psi | 58% | 1473 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 44,962 psi | 86% | 2343 fps | 98.8% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 44,527 psi | 86% | 2303 fps | 97.5% |
| Shooters World SOCOM | <<locked>> | 84% | 47,050 psi | 90% | 2323 fps | 98.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 46,035 psi | 89% | 2195 fps | 100% |
| Vihtavuori N110 | <<locked>> | 84% | 44,628 psi | 86% | 2231 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 46,282 psi | 89% | 2379 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>> | 88% | 40,741 psi | 78% | 2231 fps | 95.5% |
| ADI AR 2205 | <<locked>> | 80% | 42,177 psi | 81% | 2175 fps | 100% |
| ADI AR 2207 | 28 gr | 80% | 27,876 psi | 54% | 2051 fps | 95.7% |
| Alliant Reloder-10x | <<locked>> | 98% | 38,348 psi | 74% | 2293 fps | 95.2% |
| Alliant Reloder-7 | 31.9 gr | 88% | 37,246 psi | 72% | 2208 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,524 psi | 43% | 1283 fps | 100% |
| IMR 4198 | <<locked>> | 92% | 35,810 psi | 69% | 2178 fps | 95.1% |
| IMR 4227 | <<locked>> | 80% | 34,693 psi | 67% | 2113 fps | 96.7% |
| Lovex D060 | <<locked>> | 80% | 42,148 psi | 81% | 2260 fps | 97% |
| Lovex S053 | <<locked>> | 80% | 34,069 psi | 66% | 2103 fps | 99.2% |
| Norma 200 | <<locked>> | 90% | 34,853 psi | 67% | 2211 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 22,307 psi | 43% | 1312 fps | 100% |
| ReloadSwiss RS 36 | 29.1 gr | 80% | 33,562 psi | 65% | 2133 fps | 96.2% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 42,148 psi | 81% | 2260 fps | 97% |
| Shooters World SOCOM | <<locked>> | 80% | 41,437 psi | 80% | 2234 fps | 97.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 32,518 psi | 63% | 1982 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 39,943 psi | 77% | 2159 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 28,152 psi | 54% | 2031 fps | 97.1% |
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 18 powders for .356 Win. loaded with the .358 | 180gr | Barnes X S. Norma 200 delivers the highest muzzle velocity at 2,418 fps; across all powders the maximum-charge window runs from 1,434 fps to 2,418 fps. Alliant Reloder-10x gives the best case fill at 100 %, and 18 of the 18 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (359 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. Alliant Reloder-10x, 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. ADI AR 2207, Alliant Reloder-7, ReloadSwiss RS 36 rank at the top here: for .356 Win. with the .358 | 180gr | Barnes X S 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.