Load Specifications
Load data in caliber .358 Win. with .355 | 250gr | MAKER Solid Copper Expanding bullet and 56 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 Shooters World AR Plus.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 88% | 50,256 psi | 86% | 2146 fps | 100% |
| Accurate 2015ᴾ | <<locked>> | 100% | 45,745 psi | 78% | 2169 fps | 99.9% |
| Accurate 2460ᴾ | <<locked>> | 100% | 50,778 psi | 86% | 2254 fps | 99% |
| Accurate 2495ᴾ | <<locked>> | 100% | 33,620 psi | 57% | 2070 fps | 99% |
| Accurate 2520ᴾ | <<locked>> | 100% | 43,526 psi | 74% | 2201 fps | 97.7% |
| Accurate 4064ᴾ | <<locked>> | 100% | 31,459 psi | 54% | 2041 fps | 96.1% |
| Accurate LT-30 | <<locked>> | 94% | 50,850 psi | 87% | 2149 fps | 99.7% |
| Accurate LT-32 | <<locked>> | 94% | 51,387 psi | 87% | 2156 fps | 98.7% |
| ADI AR 2205 | <<locked>> | 82% | 52,982 psi | 90% | 2057 fps | 100% |
| ADI AR 2207 | <<locked>> | 94% | 52,939 psi | 90% | 2215 fps | 100% |
| ADI AR 2219 | <<locked>> | 96% | 50,995 psi | 87% | 2270 fps | 99.7% |
| ADI Benchmark 8208ᴾ | <<locked>> | 100% | 45,527 psi | 78% | 2182 fps | 96.1% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 42,235 psi | 72% | 2192 fps | 100% |
| Alliant Power Pro 1200-Rᴾ | <<locked>> | 100% | 51,459 psi | 88% | 2336 fps | 97% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 52,808 psi | 90% | 2260 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 92% | 51,735 psi | 88% | 2188 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 96% | 51,735 psi | 88% | 2185 fps | 99.8% |
| Hodgdon Benchmarkᴾ | <<locked>> | 100% | 49,153 psi | 84% | 2185 fps | 97.4% |
| Hodgdon BL-C2ᴾ | <<locked>> | 100% | 42,119 psi | 72% | 2192 fps | 96.1% |
| Hodgdon H322ᴾ | <<locked>> | 100% | 52,243 psi | 89% | 2283 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 98% | 50,212 psi | 85% | 2267 fps | 99.2% |
| Hodgdon H4198 | <<locked>> | 92% | 53,142 psi | 90% | 2188 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 31,662 psi | 54% | 1283 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 40,219 psi | 68% | 2178 fps | 99.2% |
| IMR 4198 | <<locked>> | 98% | 51,895 psi | 88% | 2201 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 53,084 psi | 90% | 2146 fps | 100% |
| IMR 8208 XBRᴾ | <<locked>> | 100% | 45,527 psi | 78% | 2182 fps | 96.1% |
| Lovex D073.4 | <<locked>> | 94% | 52,127 psi | 89% | 2270 fps | 98.8% |
| Lovex D073.5ᴾ | <<locked>> | 100% | 51,068 psi | 87% | 2257 fps | 98.1% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 38,334 psi | 65% | 2136 fps | 96.6% |
| Lovex S053 | <<locked>> | 88% | 51,547 psi | 88% | 2103 fps | 100% |
| Norma 200 | <<locked>> | 96% | 53,098 psi | 90% | 2247 fps | 100% |
| Norma 202ᴾ | <<locked>> | 100% | 40,625 psi | 69% | 2142 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 31,270 psi | 53% | 1309 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 52,794 psi | 90% | 2182 fps | 100% |
| ReloadSwiss RS 40ᴾ | <<locked>> | 100% | 51,982 psi | 88% | 2264 fps | 98.6% |
| Rottweil R 901ᴾ | <<locked>> | 100% | 44,962 psi | 77% | 2169 fps | 98.3% |
| Shooters World AR Plus | <<locked>> | 94% | 52,127 psi | 89% | 2270 fps | 98.8% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 38,334 psi | 65% | 2136 fps | 96.6% |
| Shooters World Tactical Rifle | <<locked>> | 96% | 50,067 psi | 85% | 2195 fps | 96.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 52,518 psi | 89% | 1982 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 96% | 51,155 psi | 87% | 2274 fps | 99.2% |
| SNPE Vectan SP 3 | <<locked>> | 98% | 50,807 psi | 86% | 2228 fps | 99.9% |
| SNPE Vectan Tubal 3000ᴾ | <<locked>> | 100% | 45,107 psi | 77% | 2113 fps | 98.3% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 36,143 psi | 62% | 1995 fps | 97.4% |
| Somchem S321ᴾ | <<locked>> | 100% | 49,023 psi | 83% | 2254 fps | 97.2% |
| Somchem S335ᴾ | <<locked>> | 100% | 42,946 psi | 73% | 2110 fps | 98.8% |
| Vihtavuori N110 | <<locked>> | 82% | 51,227 psi | 87% | 2024 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 53,069 psi | 90% | 2172 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 50,821 psi | 87% | 2185 fps | 100% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 44,077 psi | 75% | 2116 fps | 99.8% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 36,230 psi | 62% | 2083 fps | 99.2% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 38,769 psi | 66% | 2087 fps | 97.6% |
| Vihtavuori N530ᴾ | <<locked>> | 100% | 45,876 psi | 78% | 2178 fps | 96.2% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 37,391 psi | 64% | 2083 fps | 96.7% |
| Winchester 748ᴾ | <<locked>> | 100% | 43,888 psi | 75% | 2208 fps | 96.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 80% | 38,914 psi | 66% | 1995 fps | 99.8% |
| Accurate 2015 | <<locked>> | 80% | 24,700 psi | 42% | 1801 fps | 95.6% |
| Accurate 2460 | <<locked>> | 86% | 31,691 psi | 54% | 1969 fps | 95% |
| Accurate 2495 | <<locked>> | 88% | 22,742 psi | 39% | 1841 fps | 95.5% |
| Accurate 2520 | <<locked>> | 92% | 33,257 psi | 57% | 2037 fps | 95.1% |
| Accurate 4064 | <<locked>> | 98% | 29,675 psi | 51% | 2005 fps | 95.5% |
| Accurate LT-30 | <<locked>> | 80% | 33,460 psi | 57% | 1893 fps | 97% |
| Accurate LT-32 | <<locked>> | 82% | 35,882 psi | 61% | 1929 fps | 95.5% |
| ADI AR 2205 | <<locked>> | 80% | 49,676 psi | 85% | 2021 fps | 100% |
| ADI AR 2207 | <<locked>> | 80% | 34,461 psi | 59% | 1975 fps | 100% |
| ADI AR 2219 | 31.8 gr | 80% | 30,269 psi | 52% | 1939 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 98% | 42,743 psi | 73% | 2139 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 22,974 psi | 39% | 1808 fps | 97.2% |
| Alliant Power Pro 1200-R | <<locked>> | 96% | 45,020 psi | 77% | 2251 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 28,761 psi | 49% | 1900 fps | 98.3% |
| Alliant Reloder-7 | <<locked>> | 80% | 35,955 psi | 61% | 1975 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 31,386 psi | 53% | 1886 fps | 96.7% |
| Hodgdon Benchmark | <<locked>> | 92% | 38,624 psi | 66% | 2031 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 98% | 39,160 psi | 67% | 2146 fps | 95.3% |
| Hodgdon H322 | <<locked>> | 82% | 29,820 psi | 51% | 1929 fps | 95.5% |
| Hodgdon H335 | <<locked>> | 84% | 31,720 psi | 54% | 1978 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 36,956 psi | 63% | 1962 fps | 97.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,293 psi | 40% | 1142 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 28,021 psi | 48% | 1939 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 31,285 psi | 53% | 1900 fps | 99.4% |
| IMR 4227 | <<locked>> | 80% | 41,974 psi | 71% | 2011 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 42,743 psi | 73% | 2139 fps | 95.5% |
| Lovex D073.4 | <<locked>> | 82% | 34,432 psi | 59% | 2014 fps | 95.1% |
| Lovex D073.5 | <<locked>> | 92% | 38,798 psi | 66% | 2090 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 96% | 33,591 psi | 57% | 2054 fps | 95.1% |
| Lovex S053 | <<locked>> | 80% | 41,350 psi | 70% | 1982 fps | 100% |
| Norma 200 | <<locked>> | 80% | 32,547 psi | 55% | 1959 fps | 99.5% |
| Norma 202 | <<locked>> | 92% | 31,894 psi | 54% | 1988 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,119 psi | 39% | 1171 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 41,394 psi | 70% | 2041 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 35,534 psi | 60% | 2028 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 88% | 31,763 psi | 54% | 1949 fps | 95% |
| Shooters World AR Plus | 33.9 gr | 82% | 34,432 psi | 59% | 2014 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 96% | 33,591 psi | 57% | 2054 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 92% | 43,874 psi | 75% | 2116 fps | 95.1% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 38,464 psi | 65% | 1824 fps | 100% |
| SNPE Vectan SP 10 | 33.8 gr | 82% | 32,547 psi | 55% | 1988 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 29,660 psi | 50% | 1896 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 33,199 psi | 57% | 1926 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 30,255 psi | 52% | 1886 fps | 95.5% |
| Somchem S321 | <<locked>> | 94% | 40,089 psi | 68% | 2129 fps | 95.2% |
| Somchem S335 | <<locked>> | 88% | 30,124 psi | 51% | 1896 fps | 95.6% |
| Vihtavuori N110 | <<locked>> | 80% | 48,225 psi | 82% | 1991 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 34,679 psi | 59% | 1942 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 28,036 psi | 48% | 1837 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 80% | 24,511 psi | 42% | 1762 fps | 95% |
| Vihtavuori N135 | <<locked>> | 86% | 23,975 psi | 41% | 1824 fps | 95.2% |
| Vihtavuori N140 | <<locked>> | 92% | 30,647 psi | 52% | 1939 fps | 95% |
| Vihtavuori N530 | <<locked>> | 98% | 42,873 psi | 73% | 2139 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 96% | 33,011 psi | 56% | 2005 fps | 95.3% |
| Winchester 748 | <<locked>> | 96% | 38,435 psi | 65% | 2119 fps | 95.2% |
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 56 powders for .358 Win. loaded with the .355 | 250gr | MAKER Solid Copper Expanding. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 2,336 fps; across all powders the maximum-charge window runs from 1,283 fps to 2,336 fps. Accurate 2015 gives the best case fill at 100 %, and 56 of the 56 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (405 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 250.0 gr projectile in 0.355" calls for a 1:16.5 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2460, Accurate 2495 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, Shooters World AR Plus rank at the top here: for .358 Win. with the .355 | 250gr | MAKER Solid Copper Expanding 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.