Load data for .357 Maximum + .355 | 118gr | Lehigh Defense Xtreme Defense

.357 Maximum cartridge drawing
Lehigh Defense logo

Load Specifications

Bullet Manufacturer:Lehigh Defense
Bullet Weight:118 gr
Bullet Diameter:0.355"
Bullet Length:<<locked>>
Case Length (l3):1.6"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:33.6 Grains of Water
Primer Size:Small Pistol (SP)
Barrel Length:7.5"
Max. allowed Pressure:44,962 psi

Load data in caliber .357 Maximum with .355 | 118gr | Lehigh Defense Xtreme Defense bullet and 131 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori 3N38, Vihtavuori N105 and ADI AP 100.

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.

A valid access license is required to use the Personalized Load Calculator.

You can find more information in our FAQ: How can I use the Personalized Load Calculator?

Max Load - Barrel Length: 7.5"

PowderChargeFRMaxP%V(0)z
Accurate No. 2²<<locked>>72%40,001 psi89%1699 fps100%
Accurate No. 2²<<locked>>68%35,984 psi80%1660 fps100%
Accurate No. 7²<<locked>>72%39,465 psi88%1883 fps96.1%
Accurate No. 7²<<locked>>68%36,129 psi80%1841 fps95.4%
Accurate No. 9*<<locked>>80%39,088 psi87%1864 fps91.2%
Accurate No. 9*²<<locked>>76%35,955 psi80%1827 fps90.4%
Accurate Solo 1000²<<locked>>72%37,159 psi83%1539 fps100%
Accurate Solo 1000²<<locked>>72%37,927 psi84%1562 fps100%
Accurate Solo 1250²<<locked>>76%37,318 psi83%1604 fps100%
Accurate Solo 1250²<<locked>>76%38,551 psi86%1637 fps100%
Accurate TCM*<<locked>>80%39,146 psi87%1860 fps92.4%
Accurate TCM*²<<locked>>76%36,013 psi80%1824 fps91.7%
ADI AP 100<<locked>>92%38,812 psi86%1801 fps100%
ADI AP 100<<locked>>92%40,161 psi89%1837 fps100%
ADI AP 70N²<<locked>>64%39,189 psi87%1647 fps100%
ADI AP 70N²<<locked>>64%40,379 psi90%1677 fps100%
ADI APS 350²<<locked>>72%37,869 psi84%1427 fps100%
ADI APS 350²<<locked>>72%38,145 psi85%1447 fps100%
ADI APS 450²<<locked>>76%39,552 psi88%1490 fps100%
ADI APS 450²<<locked>>72%37,507 psi83%1476 fps100%
ADI AS 30²<<locked>>76%40,161 psi89%1539 fps100%
ADI AS 30²<<locked>>72%37,536 psi83%1519 fps100%
ADI AS 50N²<<locked>>72%40,422 psi90%1598 fps100%
ADI AS 50N²<<locked>>68%37,739 psi84%1575 fps100%
Alliant 2400*<<locked>>88%38,450 psi86%1896 fps88.7%
Alliant BE-86²<<locked>>76%39,102 psi87%1608 fps100%
Alliant BE-86²<<locked>>76%40,451 psi90%1640 fps100%
Alliant BLUE DOT*<<locked>>92%38,087 psi85%1850 fps94.7%
Alliant BLUE DOT<<locked>>92%39,987 psi89%1900 fps95.8%
Alliant BULLSEYE²<<locked>>68%39,015 psi87%1722 fps100%
Alliant BULLSEYE²<<locked>>68%39,595 psi88%1742 fps100%
Alliant Green Dot²<<locked>>76%40,582 psi90%1604 fps100%
Alliant Green Dot²<<locked>>72%37,898 psi84%1581 fps100%
Alliant Herco<<locked>>92%40,059 psi89%1729 fps100%
Alliant Herco<<locked>>88%37,695 psi84%1709 fps100%
Alliant POWER PISTOL²<<locked>>76%39,305 psi87%1867 fps99.9%
Alliant POWER PISTOL²<<locked>>76%40,379 psi90%1900 fps100%
Alliant RED DOT²<<locked>>76%38,247 psi85%1539 fps100%
Alliant RED DOT²<<locked>>76%39,189 psi87%1568 fps100%
Alliant Sport Pistol²<<locked>>64%39,726 psi88%1736 fps100%
Alliant UNIQUE²<<locked>>76%38,014 psi85%1706 fps100%
Alliant UNIQUE²<<locked>>76%39,755 psi88%1745 fps100%
Baschieri & Pellagri 100²<<locked>>76%40,567 psi90%1581 fps100%
Baschieri & Pellagri 100²<<locked>>72%38,261 psi85%1568 fps100%
Baschieri & Pellagri 102 Pistol<<locked>>92%38,754 psi86%1568 fps100%
Baschieri & Pellagri 102 Pistol<<locked>>92%39,943 psi89%1594 fps100%
Baschieri & Pellagri 103 Pistol²<<locked>>68%37,536 psi83%1558 fps100%
Baschieri & Pellagri 103 Pistol²<<locked>>68%38,870 psi86%1588 fps100%
Hodgdon Clays<<locked>>84%39,363 psi88%1480 fps100%
Hodgdon Clays<<locked>>84%39,914 psi89%1503 fps100%
Hodgdon HS-6²<<locked>>64%40,321 psi90%1788 fps100%
Hodgdon LilGun*ᴾ<<locked>>100%38,870 psi86%1988 fps89.7%
Hodgdon TrailBossᴾ<<locked>>100%19,827 psi44%1204 fps100%
Hodgdon TrailBossᴾ<<locked>>100%20,697 psi46%1234 fps100%
Hodgdon Universal²<<locked>>72%39,885 psi89%1654 fps100%
Hodgdon Universal²<<locked>>68%37,173 psi83%1631 fps100%
Lovex D037.1²<<locked>>72%39,465 psi88%1883 fps96.1%
Lovex D037.1²<<locked>>68%36,129 psi80%1841 fps95.4%
Lovex D037.2*<<locked>>80%40,190 psi89%1880 fps91.6%
Lovex D037.2*²<<locked>>76%36,956 psi82%1847 fps90.9%
Lovex S011²<<locked>>64%39,175 psi87%1598 fps100%
Lovex S011²<<locked>>64%39,784 psi88%1624 fps100%
Lovex S020²<<locked>>68%37,434 psi83%1644 fps100%
Lovex S020²<<locked>>68%38,667 psi86%1677 fps100%
Maxam CSB 1<<locked>>80%38,522 psi86%1614 fps100%
Maxam CSB 1<<locked>>80%39,552 psi88%1640 fps100%
Maxam CSB 2²<<locked>>76%38,899 psi87%1614 fps100%
Maxam CSB 2²<<locked>>76%40,190 psi89%1644 fps100%
Maxam CSB 3²<<locked>>76%39,001 psi87%1594 fps100%
Maxam CSB 3²<<locked>>76%39,610 psi88%1617 fps100%
Maxam CSB 4²<<locked>>72%37,521 psi83%1552 fps100%
Maxam CSB 4²<<locked>>72%38,305 psi85%1575 fps100%
Maxam CSB 5²<<locked>>72%40,422 psi90%1532 fps100%
Maxam CSB 5²<<locked>>68%37,724 psi84%1509 fps100%
Ramshot Enforcer*<<locked>>88%36,085 psi80%1847 fps88.2%
Ramshot Enforcer*<<locked>>88%38,014 psi85%1900 fps89.8%
Ramshot Silhouette²<<locked>>64%39,305 psi87%1729 fps100%
Ramshot Silhouette²<<locked>>64%40,596 psi90%1759 fps100%
ReloadSwiss RS 12²<<locked>>64%37,347 psi83%1575 fps100%
ReloadSwiss RS 12²<<locked>>64%38,101 psi85%1594 fps100%
ReloadSwiss RS 14ᴾ<<locked>>100%18,869 psi42%1224 fps100%
ReloadSwiss RS 14ᴾ<<locked>>100%19,290 psi43%1243 fps100%
ReloadSwiss RS 20²<<locked>>76%37,347 psi83%1683 fps100%
ReloadSwiss RS 20²<<locked>>76%38,406 psi85%1709 fps100%
ReloadSwiss RS 24²<<locked>>76%36,550 psi81%1818 fps96.9%
ReloadSwiss RS 24²<<locked>>76%38,290 psi85%1864 fps97.7%
Rottweil P 801²<<locked>>64%40,654 psi90%1581 fps100%
Rottweil P 806<<locked>>80%37,739 psi84%1831 fps100%
Rottweil P 806<<locked>>80%40,321 psi90%1873 fps100%
Shooters World Heavy Pistol*<<locked>>80%40,190 psi89%1880 fps91.6%
Shooters World Heavy Pistol*²<<locked>>76%36,956 psi82%1847 fps90.9%
Shooters World Major Pistol²<<locked>>72%39,465 psi88%1883 fps96.1%
Shooters World Major Pistol²<<locked>>68%36,129 psi80%1841 fps95.4%
SNPE Vectan A0<<locked>>80%38,392 psi85%1660 fps100%
SNPE Vectan A0<<locked>>80%39,856 psi89%1696 fps100%
SNPE Vectan A1²<<locked>>72%38,377 psi85%1601 fps100%
SNPE Vectan A1²<<locked>>72%39,769 psi88%1631 fps100%
SNPE Vectan BA 9²<<locked>>72%37,565 psi84%1614 fps100%
SNPE Vectan BA 9²<<locked>>72%38,986 psi87%1647 fps100%
SNPE Vectan BA10²<<locked>>68%37,492 psi83%1460 fps100%
SNPE Vectan BA10²<<locked>>68%38,130 psi85%1486 fps100%
SNPE Vectan BA7 1/2<<locked>>84%38,203 psi85%1732 fps100%
SNPE Vectan BA7 1/2<<locked>>84%40,176 psi89%1775 fps100%
SNPE Vectan BA9 1/2²<<locked>>72%37,376 psi83%1614 fps100%
SNPE Vectan BA9 1/2²<<locked>>72%38,493 psi86%1644 fps100%
SNPE Vectan SP 2²<<locked>>68%35,810 psi80%1804 fps100%
SNPE Vectan SP 2²<<locked>>68%37,695 psi84%1847 fps100%
Somchem MP200²<<locked>>72%39,914 psi89%1726 fps100%
Somchem MP200²<<locked>>68%37,086 psi82%1699 fps100%
Somchem MS200²<<locked>>76%39,436 psi88%1690 fps100%
Somchem MS200²<<locked>>76%40,408 psi90%1716 fps100%
Somchem S221²<<locked>>64%36,985 psi82%1791 fps98.8%
Somchem S221²<<locked>>64%38,725 psi86%1837 fps99.3%
Vihtavuori 3N37²<<locked>>76%38,043 psi85%1752 fps100%
Vihtavuori 3N37²<<locked>>76%39,117 psi87%1781 fps100%
Vihtavuori 3N38<<locked>>92%40,509 psi90%1867 fps98.4%
Vihtavuori 3N38<<locked>>88%38,101 psi85%1844 fps98.2%
Vihtavuori N105<<locked>>92%36,463 psi81%1857 fps99.6%
Vihtavuori N105<<locked>>92%38,479 psi86%1900 fps99.9%
Vihtavuori N320²<<locked>>68%37,173 psi83%1549 fps100%
Vihtavuori N320²<<locked>>68%38,072 psi85%1572 fps100%
Vihtavuori N32C Tin Starᴾ<<locked>>100%35,737 psi79%1434 fps100%
Vihtavuori N32C Tin Starᴾ<<locked>>100%36,724 psi82%1460 fps100%
Vihtavuori N330²<<locked>>68%36,637 psi81%1608 fps100%
Vihtavuori N330²<<locked>>68%37,927 psi84%1637 fps100%
Vihtavuori N340²<<locked>>76%39,566 psi88%1690 fps100%
Vihtavuori N340²<<locked>>72%37,231 psi83%1673 fps100%
Vihtavuori N350<<locked>>84%40,379 psi90%1775 fps100%
Vihtavuori N350<<locked>>80%38,363 psi85%1762 fps100%
Winchester AutoComp ²<<locked>>76%36,883 psi82%1617 fps100%
Winchester AutoComp ²<<locked>>76%38,174 psi85%1647 fps100%

Recommended = one of the top powders for this cartridge and bullet combination.

Start Load - Barrel Length: 7.5"

PowderChargeFRMaxP%V(0)z
Accurate No. 2²<<locked>>60%27,470 psi61%1506 fps100%
Accurate No. 2²<<locked>>60%28,326 psi63%1535 fps100%
Accurate No. 7*²<<locked>>60%25,483 psi57%1608 fps89.5%
Accurate No. 7*²<<locked>>60%27,079 psi60%1657 fps91.1%
Accurate No. 9*²<<locked>>72%29,675 psi66%1690 fps86.4%
Accurate No. 9*²<<locked>>68%27,224 psi61%1650 fps85.3%
Accurate Solo 1000²<<locked>>60%27,543 psi61%1391 fps100%
Accurate Solo 1000²<<locked>>60%28,616 psi64%1421 fps100%
Accurate Solo 1250²<<locked>>60%24,511 psi55%1401 fps100%
Accurate Solo 1250²<<locked>>60%25,483 psi57%1430 fps100%
Accurate TCM*²<<locked>>68%26,353 psi59%1611 fps85.5%
Accurate TCM*²<<locked>>68%27,688 psi62%1657 fps87.1%
ADI AP 100*²9.8 gr60%16,578 psi37%1309 fps91.2%
ADI AP 100*²9.8 gr60%17,434 psi39%1345 fps92.5%
ADI AP 70N²<<locked>>60%34,606 psi77%1581 fps100%
ADI AP 70N²<<locked>>60%35,984 psi80%1614 fps100%
ADI APS 350²<<locked>>60%28,892 psi64%1296 fps100%
ADI APS 350²<<locked>>60%29,573 psi66%1319 fps100%
ADI APS 450²<<locked>>60%27,891 psi62%1316 fps100%
ADI APS 450²<<locked>>60%28,369 psi63%1339 fps100%
ADI AS 30²<<locked>>60%27,485 psi61%1352 fps100%
ADI AS 30²<<locked>>60%28,137 psi63%1375 fps100%
ADI AS 50N²<<locked>>60%29,776 psi66%1444 fps100%
ADI AS 50N²<<locked>>60%30,850 psi69%1473 fps100%
Alliant 2400*<<locked>>84%34,113 psi76%1818 fps86.5%
Alliant BE-86²<<locked>>60%25,657 psi57%1407 fps100%
Alliant BE-86²<<locked>>60%26,295 psi58%1430 fps100%
Alliant BLUE DOT*²<<locked>>72%22,321 psi50%1512 fps85.7%
Alliant BLUE DOT*²<<locked>>72%23,148 psi51%1545 fps87%
Alliant BULLSEYE²<<locked>>60%31,154 psi69%1598 fps100%
Alliant BULLSEYE²<<locked>>60%32,039 psi71%1624 fps100%
Alliant Green Dot²<<locked>>60%27,659 psi62%1407 fps100%
Alliant Green Dot²<<locked>>60%28,195 psi63%1430 fps100%
Alliant Herco²<<locked>>60%18,550 psi41%1329 fps100%
Alliant Herco²<<locked>>60%19,218 psi43%1355 fps100%
Alliant POWER PISTOL²<<locked>>60%24,207 psi54%1562 fps96%
Alliant POWER PISTOL²<<locked>>60%25,092 psi56%1598 fps96.8%
Alliant RED DOT²<<locked>>60%26,934 psi60%1365 fps100%
Alliant RED DOT²<<locked>>60%27,644 psi61%1388 fps100%
Alliant Sport Pistol²<<locked>>60%35,070 psi78%1667 fps100%
Alliant UNIQUE²<<locked>>60%24,918 psi55%1483 fps100%
Alliant UNIQUE²<<locked>>60%25,788 psi57%1512 fps100%
Baschieri & Pellagri 100²<<locked>>60%26,919 psi60%1385 fps100%
Baschieri & Pellagri 100²<<locked>>60%27,891 psi62%1414 fps100%
Baschieri & Pellagri 102 Pistol²<<locked>>60%18,144 psi40%1227 fps100%
Baschieri & Pellagri 102 Pistol²<<locked>>60%18,536 psi41%1243 fps100%
Baschieri & Pellagri 103 Pistol²<<locked>>60%29,385 psi65%1447 fps100%
Baschieri & Pellagri 103 Pistol²<<locked>>60%30,458 psi68%1473 fps100%
Hodgdon Clays²<<locked>>60%23,453 psi52%1237 fps100%
Hodgdon Clays²<<locked>>60%24,047 psi53%1260 fps100%
Hodgdon HS-6²<<locked>>60%35,099 psi78%1709 fps100%
Hodgdon LilGun*<<locked>>96%34,185 psi76%1903 fps87.2%
Hodgdon TrailBoss²<<locked>>60%9,558 psi21%915 fps100%
Hodgdon TrailBoss²<<locked>>60%9,921 psi22%935 fps100%
Hodgdon Universal²<<locked>>60%29,211 psi65%1493 fps100%
Hodgdon Universal²<<locked>>60%30,110 psi67%1522 fps100%
Lovex D037.1*²<<locked>>60%25,483 psi57%1608 fps89.5%
Lovex D037.1*²<<locked>>60%27,079 psi60%1657 fps91.1%
Lovex D037.2*²<<locked>>72%30,530 psi68%1706 fps86.9%
Lovex D037.2*²<<locked>>68%28,036 psi62%1670 fps85.9%
Lovex S011²<<locked>>60%34,998 psi78%1542 fps100%
Lovex S011²<<locked>>60%35,737 psi79%1568 fps100%
Lovex S020²<<locked>>60%29,066 psi65%1519 fps100%
Lovex S020²<<locked>>60%30,458 psi68%1555 fps100%
Maxam CSB 1²<<locked>>60%22,989 psi51%1365 fps100%
Maxam CSB 1²<<locked>>60%23,931 psi53%1394 fps100%
Maxam CSB 2²<<locked>>60%25,483 psi57%1407 fps100%
Maxam CSB 2²<<locked>>60%26,542 psi59%1437 fps100%
Maxam CSB 3²<<locked>>60%25,962 psi58%1394 fps100%
Maxam CSB 3²<<locked>>60%27,006 psi60%1424 fps100%
Maxam CSB 4²<<locked>>60%27,891 psi62%1404 fps100%
Maxam CSB 4²<<locked>>60%28,427 psi63%1427 fps100%
Maxam CSB 5²<<locked>>60%30,618 psi68%1391 fps100%
Maxam CSB 5²<<locked>>60%31,154 psi69%1414 fps100%
Ramshot Enforcer*<<locked>>84%31,154 psi69%1755 fps85.5%
Ramshot Enforcer*<<locked>>84%33,634 psi75%1818 fps87.6%
Ramshot Silhouette²<<locked>>60%34,476 psi77%1657 fps100%
Ramshot Silhouette²<<locked>>60%35,882 psi80%1690 fps100%
ReloadSwiss RS 12²<<locked>>60%33,446 psi74%1519 fps100%
ReloadSwiss RS 12²<<locked>>60%34,316 psi76%1542 fps100%
ReloadSwiss RS 14²<<locked>>60%9,166 psi20%925 fps100%
ReloadSwiss RS 14²<<locked>>60%9,500 psi21%945 fps100%
ReloadSwiss RS 20²<<locked>>60%23,714 psi53%1457 fps100%
ReloadSwiss RS 20²<<locked>>60%24,526 psi55%1483 fps100%
ReloadSwiss RS 24*²<<locked>>60%22,017 psi49%1503 fps89.3%
ReloadSwiss RS 24*²<<locked>>60%23,018 psi51%1542 fps90.6%
Rottweil P 801²<<locked>>60%36,637 psi81%1529 fps100%
Rottweil P 806²<<locked>>60%19,537 psi43%1467 fps97.9%
Rottweil P 806²<<locked>>60%20,798 psi46%1509 fps98.7%
Shooters World Heavy Pistol*²<<locked>>72%30,530 psi68%1706 fps86.9%
Shooters World Heavy Pistol*²<<locked>>68%28,036 psi62%1670 fps85.9%
Shooters World Major Pistol*²<<locked>>60%25,483 psi57%1608 fps89.5%
Shooters World Major Pistol*²<<locked>>60%27,079 psi60%1657 fps91.1%
SNPE Vectan A0²<<locked>>60%23,119 psi51%1404 fps100%
SNPE Vectan A0²<<locked>>60%23,888 psi53%1430 fps100%
SNPE Vectan A1²<<locked>>60%28,137 psi63%1447 fps100%
SNPE Vectan A1²<<locked>>60%28,718 psi64%1470 fps100%
SNPE Vectan BA 9²<<locked>>60%27,311 psi61%1457 fps100%
SNPE Vectan BA 9²<<locked>>60%27,963 psi62%1480 fps100%
SNPE Vectan BA10²<<locked>>60%30,908 psi69%1365 fps100%
SNPE Vectan BA10²<<locked>>60%31,285 psi70%1385 fps100%
SNPE Vectan BA7 1/2²<<locked>>60%19,986 psi44%1381 fps98.2%
SNPE Vectan BA7 1/2²<<locked>>60%20,842 psi46%1414 fps98.8%
SNPE Vectan BA9 1/2²<<locked>>60%27,325 psi61%1457 fps100%
SNPE Vectan BA9 1/2²<<locked>>60%28,152 psi63%1486 fps100%
SNPE Vectan SP 2²<<locked>>60%27,383 psi61%1644 fps98.7%
SNPE Vectan SP 2²<<locked>>60%28,761 psi64%1683 fps99.2%
Somchem MP200²<<locked>>60%28,747 psi64%1552 fps100%
Somchem MP200²<<locked>>60%29,370 psi65%1575 fps100%
Somchem MS200²<<locked>>60%25,541 psi57%1463 fps100%
Somchem MS200²<<locked>>60%26,789 psi60%1499 fps100%
Somchem S221²<<locked>>60%32,343 psi72%1709 fps97.6%
Somchem S221²<<locked>>60%33,678 psi75%1749 fps98.3%
Vihtavuori 3N37²<<locked>>60%23,569 psi52%1493 fps99.8%
Vihtavuori 3N37²<<locked>>60%24,453 psi54%1526 fps100%
Vihtavuori 3N38*²11.2 gr64%18,072 psi40%1385 fps86.7%
Vihtavuori 3N38*²11.2 gr60%16,665 psi37%1348 fps85.6%
Vihtavuori N105*²11.1 gr64%15,214 psi34%1352 fps87.7%
Vihtavuori N105*²11.1 gr60%14,083 psi31%1316 fps86.4%
Vihtavuori N320²<<locked>>60%29,747 psi66%1440 fps100%
Vihtavuori N320²<<locked>>60%30,835 psi69%1470 fps100%
Vihtavuori N32C Tin Star²<<locked>>60%15,679 psi35%1086 fps100%
Vihtavuori N32C Tin Star²<<locked>>60%16,302 psi36%1109 fps100%
Vihtavuori N330²<<locked>>60%28,950 psi64%1493 fps100%
Vihtavuori N330²<<locked>>60%29,863 psi66%1519 fps100%
Vihtavuori N340²<<locked>>60%25,208 psi56%1463 fps100%
Vihtavuori N340²<<locked>>60%25,991 psi58%1490 fps100%
Vihtavuori N350²<<locked>>60%20,363 psi45%1414 fps99.2%
Vihtavuori N350²<<locked>>60%21,393 psi48%1450 fps99.6%
Winchester AutoComp ²<<locked>>60%24,120 psi54%1407 fps100%
Winchester AutoComp ²<<locked>>60%25,179 psi56%1437 fps100%

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.

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This overview compares 131 powders for .357 Maximum loaded with the .355 | 118gr | Lehigh Defense Xtreme Defense. Hodgdon LilGun delivers the highest muzzle velocity at 1,988 fps; across all powders the maximum-charge window runs from 1,204 fps to 1,988 fps. Hodgdon LilGun gives the best case fill at 100 %, and 38 of the 131 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (310 MPa), the top charges use 42–90 %, leaving at least 10 % headroom. Hodgdon LilGun, Hodgdon TrailBoss, Hodgdon TrailBoss 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. Vihtavuori 3N38, Vihtavuori N105, ADI AP 100 rank at the top here: for .357 Maximum with the .355 | 118gr | Lehigh Defense Xtreme Defense they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 9, Accurate No. 9, Accurate TCM burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, 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.

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