Load Specifications
Load data in caliber .357 Mag. with .355 | 80gr | Barnes TAC-XP bullet and 65 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 20, Vihtavuori 3N37 and Vihtavuori N350.
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: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2 | <<locked>> | 84% | 38,667 psi | 89% | 1886 fps | 99.8% |
| Accurate No. 5*² | <<locked>> | 68% | 36,840 psi | 85% | 1946 fps | 94.8% |
| Accurate Solo 1000 | <<locked>> | 84% | 36,825 psi | 85% | 1759 fps | 100% |
| Accurate Solo 1250 | <<locked>> | 92% | 38,580 psi | 89% | 1857 fps | 100% |
| ADI AP 100*ᴾ | <<locked>> | 100% | 29,820 psi | 69% | 1798 fps | 89.5% |
| ADI AP 70N² | <<locked>> | 76% | 37,478 psi | 86% | 1864 fps | 100% |
| ADI APS 350 | <<locked>> | 84% | 39,131 psi | 90% | 1640 fps | 100% |
| ADI APS 450 | <<locked>> | 84% | 38,029 psi | 87% | 1670 fps | 100% |
| ADI AS 30 | <<locked>> | 88% | 39,247 psi | 90% | 1755 fps | 100% |
| ADI AS 50N | <<locked>> | 84% | 38,972 psi | 90% | 1811 fps | 100% |
| Alliant BE-86 | <<locked>> | 88% | 36,680 psi | 84% | 1808 fps | 100% |
| Alliant BULLSEYE | <<locked>> | 80% | 36,927 psi | 85% | 1923 fps | 100% |
| Alliant Green Dot | <<locked>> | 88% | 38,392 psi | 88% | 1808 fps | 100% |
| Alliant Hercoᴾ | <<locked>> | 100% | 31,604 psi | 73% | 1814 fps | 99.9% |
| Alliant POWER PISTOL* | <<locked>> | 92% | 37,985 psi | 87% | 2028 fps | 92.7% |
| Alliant RED DOT | <<locked>> | 88% | 37,130 psi | 85% | 1755 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 76% | 38,769 psi | 89% | 1952 fps | 100% |
| Alliant UNIQUE | <<locked>> | 92% | 37,391 psi | 86% | 1936 fps | 100% |
| Baschieri & Pellagri 100 | <<locked>> | 88% | 38,740 psi | 89% | 1788 fps | 100% |
| Baschieri & Pellagri 102 Pistolᴾ | <<locked>> | 100% | 31,821 psi | 73% | 1699 fps | 100% |
| Baschieri & Pellagri 103 Pistol | <<locked>> | 80% | 36,274 psi | 83% | 1768 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 64% | 35,186 psi | 81% | 1824 fps | 100% |
| Hodgdon Clays | <<locked>> | 96% | 38,725 psi | 89% | 1677 fps | 100% |
| Hodgdon HP38² | <<locked>> | 64% | 37,304 psi | 86% | 1814 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 76% | 38,957 psi | 90% | 1959 fps | 97.2% |
| Hodgdon Longshot² | <<locked>> | 72% | 37,971 psi | 87% | 1946 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 13,634 psi | 31% | 1230 fps | 100% |
| Hodgdon Universal | <<locked>> | 84% | 37,478 psi | 86% | 1864 fps | 100% |
| Lovex D036*² | <<locked>> | 68% | 36,782 psi | 85% | 1949 fps | 94.8% |
| Lovex S011² | <<locked>> | 76% | 39,160 psi | 90% | 1827 fps | 100% |
| Lovex S020 | <<locked>> | 84% | 39,088 psi | 90% | 1906 fps | 100% |
| Maxam CSB 1 | <<locked>> | 96% | 38,319 psi | 88% | 1847 fps | 100% |
| Maxam CSB 2 | <<locked>> | 92% | 37,536 psi | 86% | 1850 fps | 100% |
| Maxam CSB 3 | <<locked>> | 88% | 36,506 psi | 84% | 1795 fps | 100% |
| Maxam CSB 4 | <<locked>> | 88% | 39,059 psi | 90% | 1804 fps | 100% |
| Maxam CSB 5 | <<locked>> | 80% | 36,695 psi | 84% | 1706 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 76% | 37,971 psi | 87% | 1929 fps | 99.9% |
| Ramshot True Blue² | <<locked>> | 68% | 35,157 psi | 81% | 1890 fps | 97.5% |
| Ramshot Zip² | <<locked>> | 64% | 36,709 psi | 84% | 1818 fps | 100% |
| ReloadSwiss RS 12 | <<locked>> | 80% | 38,087 psi | 88% | 1837 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 12,430 psi | 29% | 1220 fps | 99.5% |
| ReloadSwiss RS 20 | <<locked>> | 92% | 35,476 psi | 82% | 1900 fps | 100% |
| Rottweil P 801² | <<locked>> | 76% | 39,146 psi | 90% | 1804 fps | 100% |
| Rottweil P 806ᴾ | <<locked>> | 100% | 37,579 psi | 86% | 2041 fps | 97.6% |
| Shooters World Auto Pistol*² | <<locked>> | 68% | 36,782 psi | 85% | 1949 fps | 94.8% |
| SNPE Vectan A0 | <<locked>> | 96% | 38,595 psi | 89% | 1886 fps | 100% |
| SNPE Vectan A1 | <<locked>> | 84% | 37,289 psi | 86% | 1808 fps | 100% |
| SNPE Vectan BA 9 | <<locked>> | 84% | 36,071 psi | 83% | 1814 fps | 100% |
| SNPE Vectan BA10 | <<locked>> | 80% | 38,914 psi | 89% | 1683 fps | 100% |
| SNPE Vectan BA7 1/2ᴾ | <<locked>> | 100% | 37,623 psi | 86% | 1913 fps | 97.6% |
| SNPE Vectan BA9 1/2 | <<locked>> | 88% | 38,551 psi | 89% | 1867 fps | 100% |
| SNPE Vectan SP 2 | <<locked>> | 88% | 39,073 psi | 90% | 2060 fps | 95% |
| Somchem MP200 | <<locked>> | 84% | 37,507 psi | 86% | 1916 fps | 100% |
| Somchem MS200 | <<locked>> | 88% | 36,448 psi | 84% | 1873 fps | 100% |
| Somchem S221*² | <<locked>> | 76% | 34,896 psi | 80% | 1906 fps | 88.4% |
| Vihtavuori 3N37 | <<locked>> | 92% | 37,144 psi | 85% | 1946 fps | 98.3% |
| Vihtavuori N310² | <<locked>> | 68% | 36,318 psi | 83% | 1657 fps | 100% |
| Vihtavuori N320 | <<locked>> | 84% | 37,594 psi | 86% | 1795 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 29,196 psi | 67% | 1562 fps | 100% |
| Vihtavuori N330 | <<locked>> | 84% | 35,534 psi | 82% | 1841 fps | 100% |
| Vihtavuori N340 | <<locked>> | 88% | 35,534 psi | 82% | 1860 fps | 100% |
| Vihtavuori N350 | <<locked>> | 96% | 37,405 psi | 86% | 1946 fps | 98.6% |
| Winchester 231² | <<locked>> | 72% | 37,521 psi | 86% | 1831 fps | 100% |
| Winchester 572² | <<locked>> | 64% | 37,565 psi | 86% | 1955 fps | 97.6% |
| Winchester AutoComp | <<locked>> | 92% | 37,608 psi | 86% | 1854 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2*² | <<locked>> | 60% | 18,797 psi | 43% | 1460 fps | 92.9% |
| Accurate No. 5*² | <<locked>> | 60% | 27,630 psi | 64% | 1752 fps | 90.3% |
| Accurate Solo 1000² | <<locked>> | 60% | 20,291 psi | 47% | 1440 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 16,737 psi | 38% | 1398 fps | 98.7% |
| ADI AP 100* | <<locked>> | 92% | 25,092 psi | 58% | 1683 fps | 86.4% |
| ADI AP 70N² | <<locked>> | 60% | 24,018 psi | 55% | 1608 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 23,119 psi | 53% | 1375 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 22,031 psi | 51% | 1394 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 20,421 psi | 47% | 1411 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 21,437 psi | 49% | 1486 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 17,245 psi | 40% | 1407 fps | 99.9% |
| Alliant BULLSEYE² | <<locked>> | 60% | 21,669 psi | 50% | 1585 fps | 97.8% |
| Alliant Green Dot² | <<locked>> | 60% | 19,566 psi | 45% | 1440 fps | 100% |
| Alliant Herco*² | <<locked>> | 60% | 12,386 psi | 28% | 1257 fps | 88.8% |
| Alliant POWER PISTOL* | <<locked>> | 80% | 28,036 psi | 64% | 1804 fps | 87.3% |
| Alliant RED DOT² | <<locked>> | 60% | 19,392 psi | 45% | 1411 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 24,468 psi | 56% | 1660 fps | 98.4% |
| Alliant UNIQUE*² | <<locked>> | 60% | 16,752 psi | 39% | 1437 fps | 93.8% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 19,029 psi | 44% | 1421 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 11,632 psi | 27% | 1207 fps | 99.4% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 20,218 psi | 46% | 1473 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 30,501 psi | 70% | 1745 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 18,144 psi | 42% | 1299 fps | 100% |
| Hodgdon HP38² | <<locked>> | 60% | 32,808 psi | 75% | 1742 fps | 100% |
| Hodgdon HS-6*² | <<locked>> | 60% | 22,829 psi | 52% | 1617 fps | 89.4% |
| Hodgdon Longshot*² | <<locked>> | 60% | 25,309 psi | 58% | 1683 fps | 93.2% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 6,643 psi | 15% | 906 fps | 96.5% |
| Hodgdon Universal² | <<locked>> | 60% | 19,711 psi | 45% | 1499 fps | 99.9% |
| Lovex D036*² | <<locked>> | 60% | 27,586 psi | 63% | 1752 fps | 90.3% |
| Lovex S011² | <<locked>> | 60% | 24,903 psi | 57% | 1578 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 18,985 psi | 44% | 1490 fps | 97.6% |
| Maxam CSB 1² | <<locked>> | 60% | 15,693 psi | 36% | 1355 fps | 98.2% |
| Maxam CSB 2² | <<locked>> | 60% | 16,346 psi | 38% | 1414 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 17,970 psi | 41% | 1414 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 19,595 psi | 45% | 1440 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 22,452 psi | 52% | 1453 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 23,351 psi | 54% | 1624 fps | 96.4% |
| Ramshot True Blue*² | <<locked>> | 60% | 26,339 psi | 61% | 1703 fps | 93.9% |
| Ramshot Zip² | <<locked>> | 60% | 32,343 psi | 74% | 1745 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 21,654 psi | 50% | 1539 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 6,382 psi | 15% | 896 fps | 91.6% |
| ReloadSwiss RS 20*² | 7.1 gr | 60% | 14,504 psi | 33% | 1381 fps | 94% |
| Rottweil P 801² | <<locked>> | 60% | 25,570 psi | 59% | 1581 fps | 100% |
| Rottweil P 806* | <<locked>> | 80% | 19,450 psi | 45% | 1627 fps | 87.1% |
| Shooters World Auto Pistol*² | <<locked>> | 60% | 27,586 psi | 63% | 1752 fps | 90.3% |
| SNPE Vectan A0*² | <<locked>> | 60% | 15,664 psi | 36% | 1352 fps | 92.6% |
| SNPE Vectan A1² | <<locked>> | 60% | 19,972 psi | 46% | 1470 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 19,145 psi | 44% | 1453 fps | 98.7% |
| SNPE Vectan BA10² | <<locked>> | 60% | 24,584 psi | 56% | 1447 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 72% | 18,710 psi | 43% | 1480 fps | 87.2% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 18,710 psi | 43% | 1457 fps | 99.3% |
| SNPE Vectan SP 2*² | <<locked>> | 72% | 23,685 psi | 54% | 1719 fps | 86.4% |
| Somchem MP200*² | <<locked>> | 60% | 19,014 psi | 44% | 1496 fps | 94.4% |
| Somchem MS200² | <<locked>> | 60% | 17,840 psi | 41% | 1444 fps | 95.8% |
| Somchem S221*² | <<locked>> | 72% | 30,313 psi | 70% | 1811 fps | 85.9% |
| Vihtavuori 3N37*² | 8.8 gr | 64% | 16,708 psi | 38% | 1450 fps | 86.3% |
| Vihtavuori N310² | <<locked>> | 60% | 29,370 psi | 68% | 1549 fps | 100% |
| Vihtavuori N320² | <<locked>> | 60% | 19,580 psi | 45% | 1457 fps | 100% |
| Vihtavuori N32C Tin Star² | <<locked>> | 60% | 11,922 psi | 27% | 1161 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 17,535 psi | 40% | 1460 fps | 99.7% |
| Vihtavuori N340*² | <<locked>> | 60% | 16,650 psi | 38% | 1414 fps | 94.2% |
| Vihtavuori N350*² | 8.8 gr | 68% | 17,071 psi | 39% | 1463 fps | 87.3% |
| Winchester 231² | <<locked>> | 60% | 25,773 psi | 59% | 1621 fps | 100% |
| Winchester 572² | <<locked>> | 60% | 32,764 psi | 75% | 1864 fps | 96% |
| Winchester AutoComp ² | <<locked>> | 60% | 16,273 psi | 37% | 1388 fps | 97.7% |
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 65 powders for .357 Mag. loaded with the .355 | 80gr | Barnes TAC-XP. SNPE Vectan SP 2 delivers the highest muzzle velocity at 2,060 fps; across all powders the maximum-charge window runs from 1,220 fps to 2,060 fps. ADI AP 100 gives the best case fill at 100 %, and 47 of the 65 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (300 MPa), the top charges use 29–90 %, leaving at least 10 % headroom. ADI AP 100, Alliant Herco, Baschieri & Pellagri 102 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. ReloadSwiss RS 20, Vihtavuori 3N37, Vihtavuori N350 rank at the top here: for .357 Mag. with the .355 | 80gr | Barnes TAC-XP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 5, ADI AP 100, Alliant POWER PISTOL 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.