Load Specifications
Load data in caliber .357 SIG with .358 | 80gr | Rim Rock DEWC bullet and 67 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant BULLSEYE, Somchem MP200 and Vihtavuori N330.
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 ≥ 60% and propellant combustion ≥ 80%. 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: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 88% | 36,680 psi | 83% | 1716 fps | 97.4% |
| Accurate No. 5*² | <<locked>> | 76% | 40,030 psi | 90% | 1854 fps | 91.2% |
| Accurate Solo 1000 | <<locked>> | 92% | 37,927 psi | 86% | 1663 fps | 100% |
| Accurate Solo 1250ᴾ | <<locked>> | 100% | 38,885 psi | 88% | 1749 fps | 100% |
| ADI AP 70N | <<locked>> | 84% | 38,638 psi | 87% | 1772 fps | 100% |
| ADI APS 350 | <<locked>> | 88% | 38,725 psi | 88% | 1529 fps | 100% |
| ADI APS 450 | <<locked>> | 88% | 37,376 psi | 84% | 1555 fps | 100% |
| ADI AS 30 | <<locked>> | 96% | 39,987 psi | 90% | 1657 fps | 100% |
| ADI AS 50N | <<locked>> | 88% | 37,072 psi | 84% | 1677 fps | 100% |
| Alliant BE-86 | <<locked>> | 96% | 37,594 psi | 85% | 1716 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 88% | 38,580 psi | 87% | 1818 fps | 99.8% |
| Alliant Green Dot | <<locked>> | 96% | 39,363 psi | 89% | 1713 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 26,585 psi | 60% | 1585 fps | 96.4% |
| Alliant POWER PISTOL*ᴾ | <<locked>> | 100% | 38,609 psi | 87% | 1880 fps | 87.4% |
| Alliant RED DOT | <<locked>> | 96% | 37,246 psi | 84% | 1650 fps | 100% |
| Alliant Sport Pistol | <<locked>> | 80% | 36,477 psi | 82% | 1781 fps | 99.2% |
| Alliant UNIQUEᴾ | <<locked>> | 100% | 37,434 psi | 85% | 1808 fps | 99.4% |
| Baschieri & Pellagri 100 | <<locked>> | 92% | 36,782 psi | 83% | 1654 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 26,832 psi | 61% | 1516 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 88% | 38,232 psi | 86% | 1693 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 72% | 37,985 psi | 86% | 1755 fps | 100% |
| Hodgdon Claysᴾ | <<locked>> | 100% | 38,319 psi | 87% | 1565 fps | 100% |
| Hodgdon HP38² | <<locked>> | 68% | 36,419 psi | 82% | 1690 fps | 100% |
| Hodgdon HS-6* | <<locked>> | 80% | 36,941 psi | 84% | 1781 fps | 92.1% |
| Hodgdon Longshot*² | <<locked>> | 76% | 36,303 psi | 82% | 1775 fps | 93.9% |
| Hodgdon TiteGroup² | <<locked>> | 64% | 38,072 psi | 86% | 1657 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 11,240 psi | 25% | 1066 fps | 98.9% |
| Hodgdon Universal | <<locked>> | 92% | 37,695 psi | 85% | 1755 fps | 100% |
| Lovex D032² | <<locked>> | 64% | 39,740 psi | 90% | 1729 fps | 100% |
| Lovex D036*² | <<locked>> | 76% | 39,972 psi | 90% | 1850 fps | 91.1% |
| Lovex S011 | <<locked>> | 80% | 38,305 psi | 87% | 1699 fps | 100% |
| Lovex S020 | <<locked>> | 92% | 39,842 psi | 90% | 1795 fps | 100% |
| Maxam CSB 1ᴾ | <<locked>> | 100% | 35,114 psi | 79% | 1686 fps | 100% |
| Maxam CSB 2ᴾ | <<locked>> | 100% | 37,536 psi | 85% | 1749 fps | 100% |
| Maxam CSB 3 | <<locked>> | 96% | 37,753 psi | 85% | 1706 fps | 100% |
| Maxam CSB 4 | <<locked>> | 92% | 37,478 psi | 85% | 1677 fps | 100% |
| Maxam CSB 5 | <<locked>> | 88% | 38,986 psi | 88% | 1634 fps | 100% |
| Ramshot Silhouette | <<locked>> | 80% | 36,201 psi | 82% | 1768 fps | 97.9% |
| Ramshot True Blue*² | <<locked>> | 76% | 37,884 psi | 86% | 1798 fps | 94.6% |
| Ramshot Zip² | <<locked>> | 72% | 39,494 psi | 89% | 1745 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 88% | 38,595 psi | 87% | 1745 fps | 100% |
| ReloadSwiss RS 14*ᴾ | <<locked>> | 100% | 10,080 psi | 23% | 1037 fps | 94.2% |
| ReloadSwiss RS 20ᴾ | <<locked>> | 100% | 35,752 psi | 81% | 1785 fps | 99.9% |
| Rottweil P 801 | <<locked>> | 80% | 37,217 psi | 84% | 1680 fps | 100% |
| Shooters World Auto Pistol*² | <<locked>> | 76% | 39,972 psi | 90% | 1850 fps | 91.1% |
| Shooters World Clean Shot² | <<locked>> | 64% | 39,740 psi | 90% | 1729 fps | 100% |
| Shooters World Ultimate Pistol² | <<locked>> | 64% | 40,030 psi | 90% | 1824 fps | 100% |
| SNPE Vectan A0ᴾ | <<locked>> | 100% | 36,521 psi | 83% | 1726 fps | 99.1% |
| SNPE Vectan A1 | <<locked>> | 92% | 39,131 psi | 88% | 1726 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 92% | 37,840 psi | 86% | 1722 fps | 100% |
| SNPE Vectan BA10 | <<locked>> | 84% | 38,348 psi | 87% | 1568 fps | 100% |
| SNPE Vectan BA7 1/2*ᴾ | <<locked>> | 100% | 31,299 psi | 71% | 1660 fps | 90.8% |
| SNPE Vectan BA9 1/2 | <<locked>> | 96% | 39,856 psi | 90% | 1772 fps | 100% |
| SNPE Vectan SP 2* | <<locked>> | 96% | 38,421 psi | 87% | 1900 fps | 89.5% |
| Somchem MP200 | <<locked>> | 92% | 38,508 psi | 87% | 1801 fps | 98.9% |
| Somchem MS200 | <<locked>> | 96% | 36,782 psi | 83% | 1752 fps | 99.7% |
| Vihtavuori 3N37*ᴾ | <<locked>> | 100% | 37,420 psi | 85% | 1808 fps | 94.7% |
| Vihtavuori N310² | <<locked>> | 72% | 38,130 psi | 86% | 1578 fps | 100% |
| Vihtavuori N320 | <<locked>> | 92% | 39,914 psi | 90% | 1719 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 20,552 psi | 46% | 1322 fps | 100% |
| Vihtavuori N330 | <<locked>> | 92% | 38,101 psi | 86% | 1765 fps | 100% |
| Vihtavuori N340 | <<locked>> | 96% | 36,956 psi | 84% | 1755 fps | 99.4% |
| Vihtavuori N350*ᴾ | <<locked>> | 100% | 32,068 psi | 72% | 1706 fps | 92.8% |
| Winchester 231 | <<locked>> | 80% | 39,494 psi | 89% | 1745 fps | 100% |
| Winchester 244² | <<locked>> | 68% | 39,581 psi | 89% | 1736 fps | 100% |
| Winchester 572*² | <<locked>> | 68% | 35,563 psi | 80% | 1778 fps | 92.9% |
| Winchester AutoComp ᴾ | <<locked>> | 100% | 38,058 psi | 86% | 1752 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 4.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2*² | <<locked>> | 64% | 18,115 psi | 41% | 1316 fps | 87.2% |
| Accurate No. 5*² | <<locked>> | 68% | 30,690 psi | 69% | 1677 fps | 86.5% |
| Accurate Solo 1000² | <<locked>> | 60% | 17,608 psi | 40% | 1266 fps | 99.9% |
| Accurate Solo 1250*² | <<locked>> | 60% | 13,837 psi | 31% | 1191 fps | 92.7% |
| ADI AP 70N² | <<locked>> | 60% | 19,943 psi | 45% | 1394 fps | 98.2% |
| ADI APS 350² | <<locked>> | 60% | 20,479 psi | 46% | 1227 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 19,276 psi | 44% | 1237 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 17,782 psi | 40% | 1253 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 18,608 psi | 42% | 1309 fps | 99.9% |
| Alliant BE-86² | <<locked>> | 60% | 14,025 psi | 32% | 1204 fps | 95.7% |
| Alliant BULLSEYE*² | 5.9 gr | 60% | 18,507 psi | 42% | 1362 fps | 91.7% |
| Alliant Green Dot² | <<locked>> | 60% | 16,650 psi | 38% | 1257 fps | 99.5% |
| Alliant Herco*² | <<locked>> | 72% | 13,953 psi | 32% | 1217 fps | 85.5% |
| Alliant POWER PISTOL* | <<locked>> | 96% | 34,664 psi | 78% | 1801 fps | 85.3% |
| Alliant RED DOT² | <<locked>> | 60% | 16,592 psi | 38% | 1240 fps | 100% |
| Alliant Sport Pistol*² | <<locked>> | 60% | 20,421 psi | 46% | 1421 fps | 92.4% |
| Alliant UNIQUE*² | <<locked>> | 64% | 15,432 psi | 35% | 1273 fps | 87.3% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 15,998 psi | 36% | 1230 fps | 98.5% |
| Baschieri & Pellagri 102 Pistol*² | <<locked>> | 60% | 9,529 psi | 22% | 1030 fps | 93.9% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 16,505 psi | 37% | 1280 fps | 99.2% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 25,788 psi | 58% | 1535 fps | 99.1% |
| Hodgdon Clays² | <<locked>> | 60% | 15,824 psi | 36% | 1152 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 28,108 psi | 64% | 1552 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 68% | 24,816 psi | 56% | 1535 fps | 85.2% |
| Hodgdon Longshot*² | <<locked>> | 64% | 24,091 psi | 54% | 1519 fps | 87% |
| Hodgdon TiteGroup² | <<locked>> | 60% | 33,402 psi | 76% | 1588 fps | 100% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 5,366 psi | 12% | 761 fps | 88.4% |
| Hodgdon Universal² | <<locked>> | 60% | 16,636 psi | 38% | 1296 fps | 96.2% |
| Lovex D032² | <<locked>> | 60% | 34,214 psi | 77% | 1647 fps | 100% |
| Lovex D036*² | <<locked>> | 68% | 30,647 psi | 69% | 1673 fps | 86.4% |
| Lovex S011² | <<locked>> | 60% | 21,596 psi | 49% | 1391 fps | 99.3% |
| Lovex S020*² | <<locked>> | 60% | 15,766 psi | 36% | 1273 fps | 90.7% |
| Maxam CSB 1*² | <<locked>> | 60% | 12,937 psi | 29% | 1152 fps | 91.8% |
| Maxam CSB 2² | <<locked>> | 60% | 12,952 psi | 29% | 1204 fps | 96.8% |
| Maxam CSB 3² | <<locked>> | 60% | 15,360 psi | 35% | 1230 fps | 98% |
| Maxam CSB 4² | <<locked>> | 60% | 16,781 psi | 38% | 1263 fps | 99.9% |
| Maxam CSB 5² | <<locked>> | 60% | 19,145 psi | 43% | 1289 fps | 100% |
| Ramshot Silhouette*² | <<locked>> | 60% | 19,276 psi | 44% | 1388 fps | 88.8% |
| Ramshot True Blue*² | <<locked>> | 60% | 21,901 psi | 50% | 1457 fps | 85.3% |
| Ramshot Zip² | <<locked>> | 60% | 27,731 psi | 63% | 1549 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 17,376 psi | 39% | 1335 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 72% | 6,106 psi | 14% | 820 fps | 85.2% |
| ReloadSwiss RS 20*² | <<locked>> | 64% | 13,431 psi | 30% | 1224 fps | 86.8% |
| Rottweil P 801² | <<locked>> | 60% | 20,914 psi | 47% | 1391 fps | 100% |
| Shooters World Auto Pistol*² | <<locked>> | 68% | 30,647 psi | 69% | 1673 fps | 86.4% |
| Shooters World Clean Shot² | <<locked>> | 60% | 34,214 psi | 77% | 1647 fps | 100% |
| Shooters World Ultimate Pistol² | <<locked>> | 60% | 34,708 psi | 78% | 1739 fps | 99.5% |
| SNPE Vectan A0*² | <<locked>> | 64% | 15,200 psi | 34% | 1224 fps | 87.1% |
| SNPE Vectan A1² | <<locked>> | 60% | 16,810 psi | 38% | 1270 fps | 97.2% |
| SNPE Vectan BA 9*² | <<locked>> | 60% | 16,114 psi | 36% | 1247 fps | 93% |
| SNPE Vectan BA10² | <<locked>> | 60% | 22,089 psi | 50% | 1296 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 88% | 23,366 psi | 53% | 1483 fps | 85.6% |
| SNPE Vectan BA9 1/2*² | <<locked>> | 60% | 15,563 psi | 35% | 1247 fps | 94.2% |
| SNPE Vectan SP 2* | <<locked>> | 88% | 30,429 psi | 69% | 1742 fps | 85.1% |
| Somchem MP200*² | 6.5 gr | 60% | 15,896 psi | 36% | 1273 fps | 86.2% |
| Somchem MS200*² | <<locked>> | 60% | 14,939 psi | 34% | 1227 fps | 88.3% |
| Vihtavuori 3N37* | <<locked>> | 80% | 21,538 psi | 49% | 1470 fps | 85.3% |
| Vihtavuori N310² | <<locked>> | 60% | 26,948 psi | 61% | 1411 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 16,868 psi | 38% | 1286 fps | 99.9% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 8,224 psi | 19% | 945 fps | 99% |
| Vihtavuori N330² | 6 gr | 60% | 15,243 psi | 34% | 1280 fps | 95.8% |
| Vihtavuori N340*² | <<locked>> | 60% | 13,938 psi | 32% | 1204 fps | 85.9% |
| Vihtavuori N350* | <<locked>> | 88% | 23,090 psi | 52% | 1509 fps | 87.1% |
| Winchester 231² | <<locked>> | 60% | 22,249 psi | 50% | 1430 fps | 99.4% |
| Winchester 244² | <<locked>> | 60% | 30,821 psi | 70% | 1598 fps | 100% |
| Winchester 572*² | <<locked>> | 60% | 26,803 psi | 61% | 1594 fps | 88.1% |
| Winchester AutoComp *² | <<locked>> | 60% | 13,300 psi | 30% | 1175 fps | 90.5% |
Recommended = one of the top powders for this cartridge and bullet combination.
* not dangerous but load has suboptimal powder burnt with possible characteristics such as extensive muzzle flash or inaccurate loads.
² fill rate low - you might want to consider using a filler to ensure proper ignition.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 67 powders for .357 SIG loaded with the .358 | 80gr | Rim Rock DEWC. SNPE Vectan SP 2 delivers the highest muzzle velocity at 1,900 fps; across all powders the maximum-charge window runs from 1,037 fps to 1,900 fps. Accurate Solo 1250 gives the best case fill at 100 %, and 52 of the 67 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (305 MPa), the top charges use 23–90 %, leaving at least 10 % headroom. Accurate Solo 1250, Alliant Herco, Alliant POWER PISTOL 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. Alliant BULLSEYE, Somchem MP200, Vihtavuori N330 rank at the top here: for .357 SIG with the .358 | 80gr | Rim Rock DEWC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 5, Alliant POWER PISTOL, Hodgdon HS-6 burn incompletely and react more sensitively to barrel length and temperature. Baschieri & Pellagri 102 Pistol, 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.