Load Specifications
Load data in caliber .356 Win. with .358 | 200gr | Hornady InterLock SP-RP bullet and 63 powders. The key underlying parameters are shown in the table above.
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>> | 92% | 46,253 psi | 89% | 2221 fps | 98.1% |
| Accurate 1680 | <<locked>> | 92% | 46,253 psi | 89% | 2221 fps | 98.1% |
| Accurate 1680 | <<locked>> | 90% | 45,818 psi | 88% | 2247 fps | 98.4% |
| Accurate LT-30 | <<locked>> | 96% | 46,253 psi | 89% | 2238 fps | 96% |
| ADI AR 2205 | <<locked>> | 82% | 44,425 psi | 85% | 2110 fps | 100% |
| ADI AR 2205 | <<locked>> | 82% | 44,425 psi | 85% | 2110 fps | 100% |
| ADI AR 2205 | <<locked>> | 82% | 46,383 psi | 89% | 2162 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 46,731 psi | 90% | 2306 fps | 100% |
| ADI AR 2207 | <<locked>> | 98% | 46,731 psi | 90% | 2306 fps | 100% |
| ADI AR 2207 | <<locked>> | 96% | 46,557 psi | 90% | 2329 fps | 100% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 34,983 psi | 67% | 2201 fps | 97.2% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 40,756 psi | 78% | 2241 fps | 97.3% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 40,756 psi | 78% | 2241 fps | 97.3% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 43,642 psi | 84% | 2313 fps | 98.3% |
| Alliant Reloder-7 | <<locked>> | 96% | 46,789 psi | 90% | 2270 fps | 98.8% |
| Alliant Reloder-7 | <<locked>> | 96% | 46,789 psi | 90% | 2270 fps | 98.8% |
| Alliant Reloder-7 | <<locked>> | 94% | 46,412 psi | 89% | 2293 fps | 99% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 46,963 psi | 90% | 2241 fps | 95.8% |
| Baschieri & Pellagri 106ᴾ | <<locked>> | 100% | 46,963 psi | 90% | 2241 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 46,673 psi | 90% | 2267 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,704 psi | 57% | 1358 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,704 psi | 57% | 1358 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 30,052 psi | 58% | 1385 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 44,512 psi | 86% | 2244 fps | 98.7% |
| IMR 4198ᴾ | <<locked>> | 100% | 44,512 psi | 86% | 2244 fps | 98.7% |
| IMR 4198ᴾ | <<locked>> | 100% | 46,644 psi | 90% | 2306 fps | 99.3% |
| IMR 4227 | <<locked>> | 90% | 46,615 psi | 90% | 2218 fps | 99.7% |
| IMR 4227 | <<locked>> | 90% | 46,615 psi | 90% | 2218 fps | 99.7% |
| IMR 4227 | <<locked>> | 88% | 45,847 psi | 88% | 2238 fps | 99.8% |
| Lovex D060 | <<locked>> | 82% | 44,643 psi | 86% | 2205 fps | 98.6% |
| Lovex D060 | <<locked>> | 82% | 44,643 psi | 86% | 2205 fps | 98.6% |
| Lovex D060 | <<locked>> | 82% | 46,673 psi | 90% | 2267 fps | 99.2% |
| Lovex S053 | <<locked>> | 90% | 44,860 psi | 86% | 2188 fps | 100% |
| Lovex S053 | <<locked>> | 90% | 44,860 psi | 86% | 2188 fps | 100% |
| Lovex S053 | <<locked>> | 90% | 46,992 psi | 90% | 2241 fps | 100% |
| Norma 200ᴾ | <<locked>> | 100% | 46,369 psi | 89% | 2316 fps | 98.9% |
| Norma 200ᴾ | <<locked>> | 100% | 46,369 psi | 89% | 2316 fps | 98.9% |
| Norma 200 | <<locked>> | 98% | 46,702 psi | 90% | 2349 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,095 psi | 56% | 1388 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,095 psi | 56% | 1388 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 29,776 psi | 57% | 1417 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 45,237 psi | 87% | 2241 fps | 99.6% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 45,237 psi | 87% | 2241 fps | 99.6% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 44,788 psi | 86% | 2260 fps | 99.7% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 44,643 psi | 86% | 2205 fps | 98.6% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 44,643 psi | 86% | 2205 fps | 98.6% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 46,673 psi | 90% | 2267 fps | 99.2% |
| Shooters World SOCOM | <<locked>> | 82% | 44,788 psi | 86% | 2188 fps | 99.1% |
| Shooters World SOCOM | <<locked>> | 82% | 44,788 psi | 86% | 2188 fps | 99.1% |
| Shooters World SOCOM | <<locked>> | 82% | 46,760 psi | 90% | 2244 fps | 99.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 45,934 psi | 88% | 2083 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 45,934 psi | 88% | 2083 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 45,992 psi | 88% | 2106 fps | 100% |
| SNPE Vectan SP 3ᴾ | <<locked>> | 100% | 44,991 psi | 87% | 2310 fps | 96.6% |
| Vihtavuori N110 | <<locked>> | 86% | 47,050 psi | 90% | 2152 fps | 100% |
| Vihtavuori N110 | <<locked>> | 86% | 47,050 psi | 90% | 2152 fps | 100% |
| Vihtavuori N110 | <<locked>> | 84% | 46,920 psi | 90% | 2175 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 46,963 psi | 90% | 2274 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 46,963 psi | 90% | 2274 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 46,833 psi | 90% | 2297 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 39,929 psi | 77% | 2169 fps | 96.7% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 39,929 psi | 77% | 2169 fps | 96.7% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 42,177 psi | 81% | 2231 fps | 97.7% |
Start Load - Barrel Length: 20"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 84% | 35,679 psi | 69% | 2054 fps | 95.6% |
| Accurate 1680 | <<locked>> | 84% | 35,679 psi | 69% | 2054 fps | 95.6% |
| Accurate 1680 | <<locked>> | 80% | 33,141 psi | 64% | 2031 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 94% | 43,801 psi | 84% | 2198 fps | 95.4% |
| ADI AR 2205 | <<locked>> | 80% | 41,916 psi | 81% | 2073 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 41,916 psi | 81% | 2073 fps | 100% |
| ADI AR 2205 | <<locked>> | 80% | 43,859 psi | 84% | 2126 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 27,093 psi | 52% | 1955 fps | 96.9% |
| ADI AR 2207 | <<locked>> | 80% | 27,093 psi | 52% | 1955 fps | 96.9% |
| ADI AR 2207 | <<locked>> | 80% | 28,703 psi | 55% | 2014 fps | 97.9% |
| Alliant AR-Comp | <<locked>> | 96% | 31,096 psi | 60% | 2116 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 94% | 33,895 psi | 65% | 2119 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 94% | 33,895 psi | 65% | 2119 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 90% | 32,227 psi | 62% | 2106 fps | 95.3% |
| Alliant Reloder-7 | <<locked>> | 84% | 32,547 psi | 63% | 2031 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 84% | 32,547 psi | 63% | 2031 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 30,385 psi | 58% | 2008 fps | 95.1% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 44,019 psi | 85% | 2198 fps | 95.1% |
| Baschieri & Pellagri 106 | <<locked>> | 98% | 44,019 psi | 85% | 2198 fps | 95.1% |
| Baschieri & Pellagri 106 | <<locked>> | 94% | 41,104 psi | 79% | 2185 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,741 psi | 42% | 1211 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,741 psi | 42% | 1211 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 22,147 psi | 43% | 1237 fps | 100% |
| IMR 4198 | <<locked>> | 88% | 31,952 psi | 61% | 2014 fps | 95.4% |
| IMR 4198 | <<locked>> | 88% | 31,952 psi | 61% | 2014 fps | 95.4% |
| IMR 4198 | <<locked>> | 84% | 30,008 psi | 58% | 1998 fps | 95.1% |
| IMR 4227 | <<locked>> | 80% | 34,563 psi | 66% | 2024 fps | 98% |
| IMR 4227 | <<locked>> | 80% | 34,563 psi | 66% | 2024 fps | 98% |
| IMR 4227 | <<locked>> | 80% | 36,303 psi | 70% | 2083 fps | 98.7% |
| Lovex D060 | <<locked>> | 80% | 42,424 psi | 82% | 2169 fps | 98.2% |
| Lovex D060 | <<locked>> | 80% | 42,424 psi | 82% | 2169 fps | 98.2% |
| Lovex D060 | <<locked>> | 80% | 44,179 psi | 85% | 2228 fps | 98.8% |
| Lovex S053 | <<locked>> | 80% | 33,533 psi | 64% | 2005 fps | 99.7% |
| Lovex S053 | <<locked>> | 80% | 33,533 psi | 64% | 2005 fps | 99.7% |
| Lovex S053 | <<locked>> | 80% | 35,404 psi | 68% | 2064 fps | 100% |
| Norma 200 | <<locked>> | 88% | 31,836 psi | 61% | 2067 fps | 95.6% |
| Norma 200 | <<locked>> | 88% | 31,836 psi | 61% | 2067 fps | 95.6% |
| Norma 200 | <<locked>> | 84% | 30,226 psi | 58% | 2054 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,408 psi | 41% | 1240 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,408 psi | 41% | 1240 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 21,814 psi | 42% | 1263 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 33,315 psi | 64% | 2037 fps | 97.5% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 33,315 psi | 64% | 2037 fps | 97.5% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 35,172 psi | 68% | 2100 fps | 98.3% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 42,424 psi | 82% | 2169 fps | 98.2% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 42,424 psi | 82% | 2169 fps | 98.2% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 44,179 psi | 85% | 2228 fps | 98.8% |
| Shooters World SOCOM | <<locked>> | 80% | 41,843 psi | 80% | 2142 fps | 98.6% |
| Shooters World SOCOM | <<locked>> | 80% | 41,843 psi | 80% | 2142 fps | 98.6% |
| Shooters World SOCOM | <<locked>> | 80% | 43,830 psi | 84% | 2201 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 31,952 psi | 61% | 1883 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 31,952 psi | 61% | 1883 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 33,431 psi | 64% | 1926 fps | 100% |
| SNPE Vectan SP 3 | <<locked>> | 96% | 40,248 psi | 77% | 2231 fps | 95.3% |
| Vihtavuori N110 | <<locked>> | 80% | 39,581 psi | 76% | 2051 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 39,581 psi | 76% | 2051 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 41,626 psi | 80% | 2103 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 27,456 psi | 53% | 1939 fps | 98.2% |
| Vihtavuori N120 | <<locked>> | 80% | 27,456 psi | 53% | 1939 fps | 98.2% |
| Vihtavuori N120 | <<locked>> | 80% | 29,022 psi | 56% | 1995 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 96% | 35,433 psi | 68% | 2090 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 96% | 35,433 psi | 68% | 2090 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 92% | 33,431 psi | 64% | 2077 fps | 95.2% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 63 powders for .356 Win. loaded with the .358 | 200gr | Hornady InterLock SP-RP. Norma 200 delivers the highest muzzle velocity at 2,349 fps; across all powders the maximum-charge window runs from 1,358 fps to 2,349 fps. Alliant AR-Comp gives the best case fill at 100 %, and 63 of the 63 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (359 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.358" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Alliant AR-Comp, Alliant Reloder-10x, Alliant Reloder-10x 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.