Load Specifications
Load data in caliber .356 Win. with .358 | 275gr | A-Square LionLoad bullet and 50 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H335, Accurate 2520 and Hodgdon H322.
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>> | 82% | 45,020 psi | 87% | 1900 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 45,136 psi | 87% | 1972 fps | 99.9% |
| Accurate 2460 | <<locked>> | 94% | 46,180 psi | 89% | 2008 fps | 98.4% |
| Accurate 2495ᴾ | <<locked>> | 100% | 38,711 psi | 74% | 1952 fps | 99.6% |
| Accurate 2520 | <<locked>> | 98% | 46,296 psi | 89% | 2041 fps | 98.1% |
| Accurate 4064ᴾ | <<locked>> | 100% | 36,085 psi | 69% | 1926 fps | 97.2% |
| Accurate LT-30 | <<locked>> | 88% | 46,166 psi | 89% | 1913 fps | 99.3% |
| Accurate LT-32 | <<locked>> | 88% | 46,601 psi | 90% | 1919 fps | 98% |
| ADI AR 2207 | <<locked>> | 86% | 45,745 psi | 88% | 1942 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 46,311 psi | 89% | 2021 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 96% | 44,367 psi | 85% | 1978 fps | 95.8% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 47,050 psi | 90% | 2060 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 92% | 45,905 psi | 88% | 1988 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 84% | 44,382 psi | 85% | 1916 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 46,804 psi | 90% | 1946 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 94% | 45,063 psi | 87% | 1949 fps | 96.6% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 46,920 psi | 90% | 2064 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 92% | 44,831 psi | 86% | 2001 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 92% | 45,542 psi | 88% | 2018 fps | 98.5% |
| Hodgdon H4198 | <<locked>> | 84% | 45,208 psi | 87% | 1909 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,460 psi | 62% | 1191 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 44,469 psi | 86% | 2047 fps | 99.6% |
| IMR 4198 | <<locked>> | 90% | 45,092 psi | 87% | 1936 fps | 100% |
| IMR 8208 XBR | <<locked>> | 96% | 44,367 psi | 85% | 1978 fps | 95.8% |
| Lovex D073.4 | <<locked>> | 86% | 44,092 psi | 85% | 1978 fps | 97.5% |
| Lovex D073.5 | <<locked>> | 94% | 46,369 psi | 89% | 2008 fps | 97.3% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 43,381 psi | 83% | 2014 fps | 97.6% |
| Norma 200 | <<locked>> | 88% | 45,977 psi | 88% | 1972 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 45,658 psi | 88% | 1998 fps | 96.2% |
| Norma 202ᴾ | <<locked>> | 100% | 45,353 psi | 87% | 2014 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,184 psi | 62% | 1217 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 44,425 psi | 85% | 1978 fps | 97.4% |
| Rottweil R 901 | <<locked>> | 96% | 44,309 psi | 85% | 1969 fps | 98.1% |
| Shooters World AR Plus | <<locked>> | 86% | 44,092 psi | 85% | 1978 fps | 97.5% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 43,381 psi | 83% | 2014 fps | 97.6% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 45,934 psi | 88% | 1749 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 46,847 psi | 90% | 2024 fps | 98.6% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 46,992 psi | 90% | 1995 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 46,557 psi | 90% | 1949 fps | 98.5% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 39,450 psi | 76% | 1873 fps | 98.1% |
| Somchem S321 | <<locked>> | 94% | 44,599 psi | 86% | 2005 fps | 96.2% |
| Somchem S335 | <<locked>> | 98% | 44,657 psi | 86% | 1949 fps | 98.9% |
| Vihtavuori N120 | <<locked>> | 86% | 45,861 psi | 88% | 1909 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 46,601 psi | 90% | 1952 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 45,730 psi | 88% | 1952 fps | 99.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 40,292 psi | 77% | 1955 fps | 99.6% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 42,946 psi | 83% | 1962 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 96% | 44,570 psi | 86% | 1975 fps | 95.9% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 41,379 psi | 80% | 1955 fps | 97.5% |
| Winchester 748 | <<locked>> | 98% | 45,585 psi | 88% | 2041 fps | 97% |
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% | 42,221 psi | 81% | 1864 fps | 99.9% |
| Accurate 2015 | <<locked>> | 80% | 27,543 psi | 53% | 1690 fps | 96.5% |
| Accurate 2460 | <<locked>> | 84% | 33,141 psi | 64% | 1811 fps | 95.2% |
| Accurate 2495 | <<locked>> | 84% | 22,960 psi | 44% | 1660 fps | 95% |
| Accurate 2520 | 37.1 gr | 90% | 35,186 psi | 68% | 1883 fps | 95.5% |
| Accurate 4064 | <<locked>> | 94% | 29,849 psi | 57% | 1814 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 36,347 psi | 70% | 1775 fps | 97.7% |
| Accurate LT-32 | <<locked>> | 80% | 36,753 psi | 71% | 1775 fps | 95.8% |
| ADI AR 2207 | <<locked>> | 80% | 38,101 psi | 73% | 1844 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 33,504 psi | 64% | 1824 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 94% | 41,669 psi | 80% | 1939 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 25,295 psi | 49% | 1696 fps | 98.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 31,923 psi | 61% | 1778 fps | 98.9% |
| Alliant Reloder-7 | <<locked>> | 80% | 39,392 psi | 76% | 1847 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 34,214 psi | 66% | 1765 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 90% | 39,885 psi | 77% | 1873 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 96% | 40,930 psi | 79% | 1982 fps | 95.7% |
| Hodgdon H322 | 31.2 gr | 80% | 30,661 psi | 59% | 1768 fps | 95.6% |
| Hodgdon H335 | 34.2 gr | 82% | 32,764 psi | 63% | 1818 fps | 95.2% |
| Hodgdon H4198 | <<locked>> | 80% | 40,118 psi | 77% | 1837 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,757 psi | 46% | 1056 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 27,412 psi | 53% | 1749 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 33,852 psi | 65% | 1772 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 94% | 41,669 psi | 80% | 1939 fps | 95.1% |
| Lovex D073.4 | <<locked>> | 80% | 35,839 psi | 69% | 1854 fps | 95.4% |
| Lovex D073.5 | <<locked>> | 88% | 37,869 psi | 73% | 1890 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 94% | 35,462 psi | 68% | 1900 fps | 95.5% |
| Norma 200 | <<locked>> | 80% | 36,114 psi | 69% | 1834 fps | 99.8% |
| Norma 201 | <<locked>> | 98% | 42,873 psi | 82% | 1959 fps | 95.6% |
| Norma 202 | <<locked>> | 90% | 33,373 psi | 64% | 1834 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,670 psi | 46% | 1083 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 36,695 psi | 71% | 1864 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 86% | 33,228 psi | 64% | 1795 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 80% | 35,839 psi | 69% | 1854 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 94% | 35,462 psi | 68% | 1900 fps | 95.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 41,249 psi | 79% | 1696 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 33,678 psi | 65% | 1827 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 32,387 psi | 62% | 1775 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 32,489 psi | 62% | 1742 fps | 95.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 29,356 psi | 56% | 1699 fps | 95% |
| Somchem S321 | <<locked>> | 92% | 41,887 psi | 81% | 1965 fps | 95.6% |
| Somchem S335 | <<locked>> | 84% | 29,544 psi | 57% | 1709 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 38,232 psi | 74% | 1814 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 30,603 psi | 59% | 1716 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 80% | 26,643 psi | 51% | 1647 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 84% | 24,874 psi | 48% | 1673 fps | 95.4% |
| Vihtavuori N140 | <<locked>> | 90% | 31,850 psi | 61% | 1788 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 94% | 41,727 psi | 80% | 1936 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 94% | 34,330 psi | 66% | 1847 fps | 95.6% |
| Winchester 748 | <<locked>> | 94% | 39,871 psi | 77% | 1959 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 83 powders for .356 Win. loaded with the .358 | 275gr | A-Square LionLoad. Hodgdon CFE223 delivers the highest muzzle velocity at 2,080 fps; across all powders the maximum-charge window runs from 1,191 fps to 2,080 fps. Accurate 2495 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (359 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. Accurate 2495, Accurate 4064, ADI AR 2208 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. Hodgdon H335, Accurate 2520, Hodgdon H322 rank at the top here: for .356 Win. with the .358 | 275gr | A-Square LionLoad they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, Accurate 2230, ADI AR 2206H burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14 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.