Load Specifications
Load data in caliber .356 Win. with .358 | 250gr | Remington SPRN bullet and 41 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are SNPE Vectan SP 10, ADI AR 2219 and Hodgdon H335.
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>> | 84% | 44,585 psi | 86% | 1991 fps | 99.8% |
| Accurate 2015ᴾ | <<locked>> | 100% | 46,470 psi | 89% | 2090 fps | 99.6% |
| Accurate 2460 | <<locked>> | 96% | 45,107 psi | 87% | 2090 fps | 97.1% |
| Accurate 2495ᴾ | <<locked>> | 100% | 34,316 psi | 66% | 1982 fps | 98% |
| Accurate 2520ᴾ | <<locked>> | 100% | 44,541 psi | 86% | 2116 fps | 96.6% |
| Accurate LT-30 | <<locked>> | 90% | 45,803 psi | 88% | 2001 fps | 98.5% |
| Accurate LT-32 | <<locked>> | 90% | 46,325 psi | 89% | 2008 fps | 96.9% |
| ADI AR 2207 | <<locked>> | 88% | 44,628 psi | 86% | 2037 fps | 100% |
| ADI AR 2219 | <<locked>> | 92% | 45,324 psi | 87% | 2103 fps | 98.4% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 42,844 psi | 82% | 2110 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 94% | 44,512 psi | 86% | 2073 fps | 99.9% |
| Alliant Reloder-7 | <<locked>> | 88% | 46,340 psi | 89% | 2044 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 92% | 46,427 psi | 89% | 2034 fps | 98.8% |
| Hodgdon Benchmark | <<locked>> | 98% | 46,760 psi | 90% | 2064 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 96% | 46,862 psi | 90% | 2126 fps | 98.6% |
| Hodgdon H335 | <<locked>> | 94% | 44,411 psi | 85% | 2096 fps | 97.2% |
| Hodgdon H4198 | <<locked>> | 86% | 44,599 psi | 86% | 1995 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,836 psi | 61% | 1247 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 40,553 psi | 78% | 2087 fps | 98.2% |
| IMR 4198 | <<locked>> | 94% | 46,804 psi | 90% | 2060 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 45,049 psi | 87% | 1975 fps | 100% |
| Lovex D073.4 | <<locked>> | 90% | 46,224 psi | 89% | 2103 fps | 96.7% |
| Lovex S053 | <<locked>> | 84% | 46,572 psi | 90% | 1975 fps | 100% |
| Norma 200 | <<locked>> | 90% | 44,875 psi | 86% | 2064 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 41,249 psi | 79% | 2054 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,459 psi | 60% | 1273 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 44,628 psi | 86% | 2005 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 96% | 46,238 psi | 89% | 2100 fps | 96.5% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 45,658 psi | 88% | 2083 fps | 97.3% |
| Shooters World AR Plus | <<locked>> | 90% | 46,224 psi | 89% | 2103 fps | 96.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 45,658 psi | 88% | 1847 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 92% | 45,643 psi | 88% | 2106 fps | 97.4% |
| SNPE Vectan SP 3 | <<locked>> | 94% | 45,629 psi | 88% | 2080 fps | 99.1% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 45,382 psi | 87% | 2028 fps | 97.3% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 36,347 psi | 70% | 1909 fps | 96% |
| Somchem S335ᴾ | <<locked>> | 100% | 43,569 psi | 84% | 2028 fps | 97.8% |
| Vihtavuori N120 | <<locked>> | 88% | 44,773 psi | 86% | 2005 fps | 100% |
| Vihtavuori N130 | <<locked>> | 96% | 45,759 psi | 88% | 2041 fps | 99.8% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 44,382 psi | 85% | 2034 fps | 99.2% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 36,535 psi | 70% | 1995 fps | 98.3% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 39,305 psi | 76% | 2001 fps | 96.3% |
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>> | 80% | 39,233 psi | 75% | 1916 fps | 99.2% |
| Accurate 2015 | <<locked>> | 84% | 28,369 psi | 55% | 1795 fps | 95.5% |
| Accurate 2460 | <<locked>> | 90% | 36,709 psi | 71% | 1965 fps | 95% |
| Accurate 2495 | <<locked>> | 92% | 26,469 psi | 51% | 1831 fps | 95.3% |
| Accurate 2520 | <<locked>> | 96% | 38,624 psi | 74% | 2031 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 33,866 psi | 65% | 1818 fps | 95.7% |
| Accurate LT-32 | <<locked>> | 86% | 40,814 psi | 78% | 1926 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 35,012 psi | 67% | 1900 fps | 100% |
| ADI AR 2219 | 33.1 gr | 82% | 32,924 psi | 63% | 1900 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 23,264 psi | 45% | 1719 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 29,182 psi | 56% | 1818 fps | 97.1% |
| Alliant Reloder-7 | <<locked>> | 80% | 36,434 psi | 70% | 1896 fps | 99.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 31,662 psi | 61% | 1804 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 96% | 44,005 psi | 85% | 2024 fps | 95% |
| Hodgdon H322 | <<locked>> | 86% | 34,272 psi | 66% | 1926 fps | 95.5% |
| Hodgdon H335 | 36.7 gr | 88% | 36,506 psi | 70% | 1972 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 37,405 psi | 72% | 1883 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,264 psi | 45% | 1106 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 31,879 psi | 61% | 1929 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 31,459 psi | 60% | 1818 fps | 98.5% |
| IMR 4227 | <<locked>> | 80% | 42,540 psi | 82% | 1942 fps | 100% |
| Lovex D073.4 | <<locked>> | 86% | 40,103 psi | 77% | 2014 fps | 95.2% |
| Lovex S053 | <<locked>> | 80% | 41,568 psi | 80% | 1913 fps | 100% |
| Norma 200 | <<locked>> | 80% | 33,025 psi | 64% | 1880 fps | 98.8% |
| Norma 202 | <<locked>> | 96% | 36,550 psi | 70% | 1978 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,090 psi | 44% | 1132 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 41,829 psi | 80% | 1969 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 40,741 psi | 78% | 2018 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 94% | 38,479 psi | 74% | 1975 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 86% | 40,103 psi | 77% | 2014 fps | 95.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,711 psi | 74% | 1762 fps | 100% |
| SNPE Vectan SP 10 | 35.9 gr | 86% | 37,507 psi | 72% | 1985 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 29,834 psi | 57% | 1814 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 37,884 psi | 73% | 1919 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 34,360 psi | 66% | 1877 fps | 95.4% |
| Somchem S335 | <<locked>> | 92% | 34,519 psi | 66% | 1886 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 35,172 psi | 68% | 1873 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 28,166 psi | 54% | 1752 fps | 96.4% |
| Vihtavuori N133 | <<locked>> | 86% | 29,559 psi | 57% | 1788 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 92% | 28,906 psi | 56% | 1847 fps | 95.8% |
| Vihtavuori N140 | <<locked>> | 98% | 37,231 psi | 72% | 1969 fps | 95.7% |
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 41 powders for .356 Win. loaded with the .358 | 250gr | Remington SPRN. Hodgdon H322 delivers the highest muzzle velocity at 2,126 fps; across all powders the maximum-charge window runs from 1,247 fps to 2,126 fps. Accurate 2015 gives the best case fill at 100 %, and 41 of the 41 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (359 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. Accurate 2015, Accurate 2495, Accurate 2520 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. SNPE Vectan SP 10, ADI AR 2219, Hodgdon H335 rank at the top here: for .356 Win. with the .358 | 250gr | Remington SPRN they combine a high case fill with complete burn and sit in the upper velocity band. Hodgdon TrailBoss stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.