Load data for .357 Maximum + .355 | 75gr | Lehigh Defense Controlled Fracturing

.357 Maximum cartridge drawing
Lehigh Defense logo

Load Specifications

Bullet Manufacturer:Lehigh Defense
Bullet Weight:75 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 | 75gr | Lehigh Defense Controlled Fracturing bullet and 131 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Rottweil P 806, Vihtavuori 3N37 and Winchester AutoComp .

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. 2<<locked>>80%36,376 psi81%1980 fps99.8%
Accurate No. 2²<<locked>>76%38,276 psi85%2198 fps100%
Accurate No. 5²<<locked>>68%39,015 psi87%2115 fps96.2%
Accurate No. 7*²<<locked>>76%36,927 psi82%2313 fps89.9%
Accurate Solo 1000<<locked>>84%38,130 psi85%1902 fps100%
Accurate Solo 1000<<locked>>80%39,407 psi88%2080 fps100%
Accurate Solo 1250<<locked>>92%40,263 psi90%2008 fps100%
Accurate Solo 1250<<locked>>84%38,928 psi87%2149 fps100%
ADI AP 100*ᴾ<<locked>>100%31,894 psi71%1957 fps91.4%
ADI AP 100ᴾ<<locked>>100%39,218 psi87%2310 fps98.2%
ADI AP 70N²<<locked>>76%38,493 psi86%2011 fps100%
ADI AP 70N²<<locked>>68%36,274 psi81%2133 fps100%
ADI APS 350<<locked>>84%40,466 psi90%1783 fps100%
ADI APS 350<<locked>>80%40,567 psi90%1942 fps100%
ADI APS 450<<locked>>84%39,175 psi87%1896 fps100%
ADI APS 450<<locked>>80%39,653 psi88%1972 fps100%
ADI AS 30<<locked>>88%39,537 psi88%1886 fps100%
ADI AS 30<<locked>>80%38,174 psi85%2021 fps100%
ADI AS 50N<<locked>>84%39,943 psi89%1957 fps100%
ADI AS 50N²<<locked>>76%38,087 psi85%2083 fps100%
Alliant BE-86<<locked>>88%38,667 psi86%1955 fps100%
Alliant BE-86<<locked>>80%36,883 psi82%2083 fps100%
Alliant BLUE DOT*ᴾ<<locked>>100%38,522 psi86%2336 fps89.6%
Alliant BULLSEYE<<locked>>80%39,189 psi87%2089 fps100%
Alliant BULLSEYE²<<locked>>72%36,811 psi82%2221 fps100%
Alliant Green Dot<<locked>>88%39,320 psi87%2051 fps100%
Alliant Green Dot<<locked>>80%38,072 psi85%2090 fps100%
Alliant Hercoᴾ<<locked>>100%33,591 psi75%1962 fps100%
Alliant Hercoᴾ<<locked>>100%39,871 psi89%2254 fps100%
Alliant POWER PISTOL*<<locked>>88%36,869 psi82%2126 fps92.8%
Alliant POWER PISTOL<<locked>>84%40,393 psi90%2408 fps97.9%
Alliant RED DOT<<locked>>88%37,869 psi84%1892 fps100%
Alliant RED DOT<<locked>>84%39,537 psi88%2077 fps100%
Alliant Sport Pistol²<<locked>>72%36,201 psi81%2034 fps100%
Alliant Sport Pistol²<<locked>>68%37,855 psi84%2244 fps100%
Alliant UNIQUE<<locked>>92%39,044 psi87%2089 fps100%
Alliant UNIQUE<<locked>>84%38,754 psi86%2260 fps100%
Baschieri & Pellagri 100<<locked>>84%37,231 psi83%1892 fps100%
Baschieri & Pellagri 100<<locked>>80%39,131 psi87%2073 fps100%
Baschieri & Pellagri 102 Pistolᴾ<<locked>>100%33,707 psi75%1833 fps100%
Baschieri & Pellagri 102 Pistolᴾ<<locked>>100%39,972 psi89%2080 fps100%
Baschieri & Pellagri 103 Pistol<<locked>>80%38,682 psi86%1911 fps100%
Baschieri & Pellagri 103 Pistol²<<locked>>76%40,567 psi90%2087 fps100%
Hodgdon CFE Pistol²<<locked>>64%36,695 psi82%2080 fps100%
Hodgdon Clays<<locked>>80%38,000 psi85%1854 fps100%
Hodgdon Clays<<locked>>88%38,421 psi85%1946 fps100%
Hodgdon HP38²<<locked>>64%39,088 psi87%1968 fps100%
Hodgdon HS-6²<<locked>>72%36,593 psi81%2046 fps97.1%
Hodgdon HS-6²<<locked>>68%38,885 psi86%2283 fps99.8%
Hodgdon Longshot²<<locked>>68%35,549 psi79%2022 fps98%
Hodgdon Longshot²<<locked>>64%37,449 psi83%2247 fps100%
Hodgdon TrailBossᴾ<<locked>>100%12,966 psi29%1304 fps100%
Hodgdon TrailBossᴾ<<locked>>100%15,519 psi35%1506 fps100%
Hodgdon Universal<<locked>>84%38,493 psi86%2011 fps100%
Hodgdon Universal²<<locked>>76%36,796 psi82%2142 fps100%
Lovex D036²<<locked>>68%38,972 psi87%2113 fps96.1%
Lovex D037.1*²<<locked>>76%36,927 psi82%2313 fps89.9%
Lovex S011²<<locked>>72%37,391 psi83%1928 fps100%
Lovex S011²<<locked>>68%38,305 psi85%2103 fps100%
Lovex S020<<locked>>80%36,172 psi80%1986 fps100%
Lovex S020²<<locked>>76%39,378 psi88%2201 fps100%
Maxam CSB 1<<locked>>96%40,147 psi89%1999 fps100%
Maxam CSB 1<<locked>>88%39,146 psi87%2142 fps100%
Maxam CSB 2<<locked>>92%39,392 psi88%1998 fps100%
Maxam CSB 2<<locked>>84%39,334 psi87%2152 fps100%
Maxam CSB 3<<locked>>88%38,276 psi85%1946 fps100%
Maxam CSB 3<<locked>>84%40,234 psi89%2136 fps100%
Maxam CSB 4<<locked>>84%37,594 psi84%1906 fps100%
Maxam CSB 4<<locked>>80%38,957 psi87%2087 fps100%
Maxam CSB 5<<locked>>80%38,000 psi85%1847 fps100%
Maxam CSB 5²<<locked>>76%39,552 psi88%2024 fps100%
Ramshot Silhouette²<<locked>>76%40,524 psi90%2097 fps100%
Ramshot Silhouette²<<locked>>68%37,956 psi84%2231 fps100%
Ramshot True Blue²<<locked>>68%37,362 psi83%2050 fps98.5%
Ramshot True Blue²<<locked>>64%38,972 psi87%2267 fps100%
Ramshot Zip²<<locked>>64%38,363 psi85%1966 fps100%
ReloadSwiss RS 12<<locked>>80%39,421 psi88%1981 fps100%
ReloadSwiss RS 12²<<locked>>72%38,101 psi85%2110 fps100%
ReloadSwiss RS 14ᴾ<<locked>>100%11,226 psi25%1266 fps98.7%
ReloadSwiss RS 14ᴾ<<locked>>100%13,880 psi31%1496 fps100%
ReloadSwiss RS 20<<locked>>92%38,798 psi86%2075 fps100%
ReloadSwiss RS 20<<locked>>84%38,072 psi85%2224 fps100%
ReloadSwiss RS 24*<<locked>>92%39,175 psi87%2140 fps88%
ReloadSwiss RS 24*<<locked>>84%38,159 psi85%2336 fps92.8%
Rottweil P 801²<<locked>>76%40,480 psi90%1946 fps100%
Rottweil P 801²<<locked>>68%38,174 psi85%2064 fps100%
Rottweil P 806<<locked>>96%36,738 psi82%2130 fps97.8%
Rottweil P 806<<locked>>88%37,840 psi84%2333 fps99.9%
Shooters World Auto Pistol²<<locked>>68%38,972 psi87%2113 fps96.1%
Shooters World Major Pistol*²<<locked>>76%36,927 psi82%2313 fps89.9%
SNPE Vectan A0<<locked>>92%37,637 psi84%1996 fps100%
SNPE Vectan A0<<locked>>88%40,016 psi89%2208 fps100%
SNPE Vectan A1<<locked>>84%39,349 psi88%2064 fps100%
SNPE Vectan A1²<<locked>>76%37,260 psi83%2087 fps100%
SNPE Vectan BA 9<<locked>>84%38,247 psi85%2073 fps100%
SNPE Vectan BA 9<<locked>>80%40,495 psi90%2169 fps100%
SNPE Vectan BA10<<locked>>80%40,611 psi90%1829 fps100%
SNPE Vectan BA10²<<locked>>72%37,376 psi83%1936 fps100%
SNPE Vectan BA7 1/2<<locked>>96%36,129 psi80%2013 fps97.8%
SNPE Vectan BA7 1/2<<locked>>92%39,885 psi89%2270 fps100%
SNPE Vectan BA9 1/2<<locked>>88%40,263 psi90%2019 fps100%
SNPE Vectan BA9 1/2<<locked>>80%38,696 psi86%2159 fps100%
SNPE Vectan SP 2*<<locked>>84%36,912 psi82%2140 fps94.7%
SNPE Vectan SP 2²<<locked>>76%36,492 psi81%2336 fps98.1%
Somchem MP200<<locked>>84%39,334 psi87%2076 fps100%
Somchem MP200²<<locked>>76%37,652 psi84%2218 fps100%
Somchem MS200<<locked>>88%37,826 psi84%2023 fps100%
Somchem MS200<<locked>>80%36,941 psi82%2178 fps100%
Somchem S221*²<<locked>>76%36,840 psi82%2075 fps90.4%
Somchem S221²<<locked>>72%39,784 psi88%2343 fps96.2%
Vihtavuori 3N37<<locked>>92%39,972 psi89%2123 fps99.2%
Vihtavuori 3N37<<locked>>84%39,421 psi88%2293 fps100%
Vihtavuori 3N38*<<locked>>96%36,738 psi82%2283 fps93.1%
Vihtavuori N105ᴾ<<locked>>100%35,302 psi79%2329 fps96.2%
Vihtavuori N310²<<locked>>68%37,768 psi84%1801 fps100%
Vihtavuori N310²<<locked>>64%40,045 psi89%1985 fps100%
Vihtavuori N320<<locked>>84%39,958 psi89%1951 fps100%
Vihtavuori N320²<<locked>>76%38,725 psi86%2087 fps100%
Vihtavuori N32C Tin Starᴾ<<locked>>100%30,211 psi67%1686 fps100%
Vihtavuori N32C Tin Starᴾ<<locked>>100%30,023 psi67%1818 fps100%
Vihtavuori N330<<locked>>84%38,043 psi85%2000 fps100%
Vihtavuori N330²<<locked>>76%38,522 psi86%2162 fps100%
Vihtavuori N340<<locked>>88%37,710 psi84%2021 fps100%
Vihtavuori N340<<locked>>80%37,028 psi82%2178 fps100%
Vihtavuori N350<<locked>>96%40,176 psi89%2116 fps99.4%
Vihtavuori N350<<locked>>88%37,739 psi84%2257 fps100%
Winchester 231²<<locked>>72%39,059 psi87%1975 fps100%
Winchester 231²<<locked>>68%40,654 psi90%2162 fps100%
Winchester 572²<<locked>>64%40,277 psi90%2264 fps99.6%
Winchester AutoComp <<locked>>92%39,175 psi87%2110 fps100%
Winchester AutoComp <<locked>>84%38,450 psi86%2149 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. 2*²<<locked>>60%18,811 psi42%1567 fps93.4%
Accurate No. 2²<<locked>>60%22,713 psi51%1854 fps98.9%
Accurate No. 5*²<<locked>>60%28,950 psi64%1903 fps91.8%
Accurate No. 7*²<<locked>>72%31,589 psi70%2188 fps87%
Accurate Solo 1000²<<locked>>60%20,523 psi46%1552 fps100%
Accurate Solo 1000²<<locked>>60%23,844 psi53%1775 fps100%
Accurate Solo 1250²<<locked>>60%16,636 psi37%1496 fps98.7%
Accurate Solo 1250²<<locked>>60%19,899 psi44%1745 fps100%
ADI AP 100*<<locked>>88%23,351 psi52%1745 fps85.6%
ADI AP 100*²<<locked>>72%18,550 psi41%1765 fps86.5%
ADI AP 70N²<<locked>>60%23,612 psi53%1713 fps100%
ADI AP 70N²<<locked>>60%28,674 psi64%1982 fps100%
ADI APS 350²<<locked>>60%23,250 psi52%1485 fps100%
ADI APS 350²<<locked>>60%25,846 psi57%1673 fps100%
ADI APS 450²<<locked>>60%22,162 psi49%1581 fps100%
ADI APS 450²<<locked>>60%24,555 psi55%1686 fps100%
ADI AS 30²<<locked>>60%20,030 psi45%1511 fps100%
ADI AS 30²<<locked>>60%23,003 psi51%1719 fps100%
ADI AS 50N²<<locked>>60%21,393 psi48%1599 fps100%
ADI AS 50N²<<locked>>60%24,671 psi55%1818 fps100%
Alliant BE-86²<<locked>>60%17,013 psi38%1503 fps99.9%
Alliant BE-86²<<locked>>60%20,349 psi45%1736 fps100%
Alliant BLUE DOT*<<locked>>92%30,777 psi68%2156 fps85.2%
Alliant BULLSEYE²<<locked>>60%21,930 psi49%1700 fps98.1%
Alliant BULLSEYE²<<locked>>60%26,208 psi58%1991 fps100%
Alliant Green Dot²<<locked>>60%19,160 psi43%1634 fps100%
Alliant Green Dot²<<locked>>60%22,597 psi50%1772 fps100%
Alliant Herco*²<<locked>>60%11,313 psi25%1304 fps86.8%
Alliant Herco²<<locked>>60%14,054 psi31%1572 fps95.4%
Alliant POWER PISTOL*²<<locked>>76%26,252 psi58%1872 fps86.6%
Alliant POWER PISTOL*²<<locked>>60%19,029 psi42%1824 fps85.5%
Alliant RED DOT²<<locked>>60%19,174 psi43%1514 fps100%
Alliant RED DOT²<<locked>>60%21,973 psi49%1719 fps100%
Alliant Sport Pistol²<<locked>>60%25,092 psi56%1787 fps98.8%
Alliant Sport Pistol²<<locked>>60%29,646 psi66%2077 fps100%
Alliant UNIQUE*²<<locked>>60%16,288 psi36%1523 fps93.5%
Alliant UNIQUE²<<locked>>60%19,464 psi43%1795 fps98.9%
Baschieri & Pellagri 100²<<locked>>60%18,985 psi42%1525 fps100%
Baschieri & Pellagri 100²<<locked>>60%22,321 psi50%1749 fps100%
Baschieri & Pellagri 102 Pistol²<<locked>>60%11,052 psi25%1273 fps99%
Baschieri & Pellagri 102 Pistol²<<locked>>60%13,648 psi30%1499 fps100%
Baschieri & Pellagri 103 Pistol²<<locked>>60%20,291 psi45%1572 fps100%
Baschieri & Pellagri 103 Pistol²<<locked>>60%24,540 psi55%1808 fps100%
Hodgdon CFE Pistol²<<locked>>60%31,865 psi71%1995 fps100%
Hodgdon Clays²<<locked>>60%23,496 psi52%1585 fps100%
Hodgdon Clays²<<locked>>60%20,363 psi45%1585 fps100%
Hodgdon HP38²<<locked>>60%34,374 psi76%1890 fps100%
Hodgdon HS-6*²<<locked>>60%23,598 psi52%1744 fps90.5%
Hodgdon HS-6²<<locked>>60%28,979 psi64%2070 fps97.7%
Hodgdon Longshot*²<<locked>>60%26,643 psi59%1827 fps94.5%
Hodgdon Longshot²<<locked>>60%32,314 psi72%2142 fps99.5%
Hodgdon TrailBoss*²<<locked>>60%5,250 psi12%913 fps92.2%
Hodgdon TrailBoss²<<locked>>60%6,396 psi14%1089 fps98.5%
Hodgdon Universal²<<locked>>60%19,305 psi43%1596 fps99.8%
Hodgdon Universal²<<locked>>60%23,351 psi52%1857 fps100%
Lovex D036*²<<locked>>60%28,906 psi64%1901 fps91.7%
Lovex D037.1*²<<locked>>72%31,589 psi70%2188 fps87%
Lovex S011²<<locked>>60%25,773 psi57%1711 fps100%
Lovex S011²<<locked>>60%29,994 psi67%1952 fps100%
Lovex S020²<<locked>>60%18,898 psi42%1592 fps97.7%
Lovex S020²<<locked>>60%23,322 psi52%1873 fps100%
Maxam CSB 1²<<locked>>60%15,505 psi34%1451 fps98.2%
Maxam CSB 1²<<locked>>60%18,594 psi41%1696 fps100%
Maxam CSB 2²<<locked>>60%15,766 psi35%1493 fps100%
Maxam CSB 2²<<locked>>60%19,856 psi44%1752 fps100%
Maxam CSB 3²<<locked>>60%18,217 psi41%1525 fps100%
Maxam CSB 3²<<locked>>60%21,364 psi48%1752 fps100%
Maxam CSB 4²<<locked>>60%19,595 psi44%1546 fps100%
Maxam CSB 4²<<locked>>60%23,032 psi51%1772 fps100%
Maxam CSB 5²<<locked>>60%22,843 psi51%1571 fps100%
Maxam CSB 5²<<locked>>60%26,194 psi58%1778 fps100%
Ramshot Silhouette²<<locked>>60%23,931 psi53%1750 fps97%
Ramshot Silhouette²<<locked>>60%29,051 psi65%2051 fps100%
Ramshot True Blue²<<locked>>60%27,644 psi61%1848 fps95.1%
Ramshot True Blue²<<locked>>60%33,678 psi75%2165 fps99.7%
Ramshot Zip²<<locked>>60%33,127 psi74%1877 fps100%
ReloadSwiss RS 12²<<locked>>60%21,582 psi48%1644 fps100%
ReloadSwiss RS 12²<<locked>>60%26,585 psi59%1896 fps100%
ReloadSwiss RS 14*²<<locked>>64%5,207 psi12%922 fps86.6%
ReloadSwiss RS 14*²<<locked>>60%5,744 psi13%1060 fps93.4%
ReloadSwiss RS 20*²<<locked>>60%14,547 psi32%1479 fps94.1%
ReloadSwiss RS 20²<<locked>>60%18,304 psi41%1765 fps99.6%
ReloadSwiss RS 24*<<locked>>88%34,519 psi77%2045 fps85.5%
ReloadSwiss RS 24*²<<locked>>72%26,005 psi58%2034 fps85.7%
Rottweil P 801²<<locked>>60%25,266 psi56%1687 fps100%
Rottweil P 801²<<locked>>60%30,255 psi67%1926 fps100%
Rottweil P 806*17.6 gr80%20,320 psi45%1730 fps87.9%
Rottweil P 806*²17.6 gr64%15,142 psi34%1699 fps87.4%
Shooters World Auto Pistol*²<<locked>>60%28,906 psi64%1901 fps91.7%
Shooters World Major Pistol*²<<locked>>72%31,589 psi70%2188 fps87%
SNPE Vectan A0*²<<locked>>60%15,635 psi35%1455 fps93%
SNPE Vectan A0²<<locked>>60%18,753 psi42%1719 fps98.7%
SNPE Vectan A1²<<locked>>60%20,131 psi45%1677 fps100%
SNPE Vectan A1²<<locked>>60%23,830 psi53%1818 fps100%
SNPE Vectan BA 9²<<locked>>60%19,319 psi43%1667 fps99.8%
SNPE Vectan BA 9²<<locked>>60%22,974 psi51%1818 fps100%
SNPE Vectan BA10²<<locked>>60%24,947 psi55%1560 fps100%
SNPE Vectan BA10²<<locked>>60%27,412 psi61%1749 fps100%
SNPE Vectan BA7 1/2*²<<locked>>68%16,723 psi37%1511 fps85.4%
SNPE Vectan BA7 1/2*²<<locked>>60%15,635 psi35%1627 fps89.4%
SNPE Vectan BA9 1/2²<<locked>>60%18,608 psi41%1560 fps99.4%
SNPE Vectan BA9 1/2²<<locked>>60%22,220 psi49%1811 fps100%
SNPE Vectan SP 2*²<<locked>>72%24,961 psi56%1859 fps87.9%
SNPE Vectan SP 2*²<<locked>>60%20,653 psi46%1903 fps89.5%
Somchem MP200*²<<locked>>60%19,290 psi43%1610 fps94.9%
Somchem MP200²<<locked>>60%23,235 psi52%1893 fps99.6%
Somchem MS200²<<locked>>60%17,550 psi39%1540 fps95.9%
Somchem MS200²<<locked>>60%20,885 psi46%1804 fps99.8%
Somchem S221*²<<locked>>68%27,731 psi62%1871 fps85.1%
Somchem S221*²<<locked>>60%25,353 psi56%1998 fps88.9%
Vihtavuori 3N37*²12.9 gr64%16,694 psi37%1543 fps86.5%
Vihtavuori 3N37*²12.9 gr60%18,043 psi40%1752 fps93.1%
Vihtavuori 3N38*<<locked>>84%25,396 psi56%2008 fps86.4%
Vihtavuori N105*<<locked>>84%20,914 psi47%1939 fps86.5%
Vihtavuori N310²<<locked>>60%30,124 psi67%1680 fps100%
Vihtavuori N310²<<locked>>60%36,172 psi80%1923 fps100%
Vihtavuori N320²<<locked>>60%19,812 psi44%1570 fps100%
Vihtavuori N320²<<locked>>60%24,482 psi54%1818 fps100%
Vihtavuori N32C Tin Star²<<locked>>60%11,023 psi25%1227 fps100%
Vihtavuori N32C Tin Star²<<locked>>60%11,342 psi25%1339 fps100%
Vihtavuori N330²<<locked>>60%17,999 psi40%1573 fps99.8%
Vihtavuori N330²<<locked>>60%23,076 psi51%1854 fps100%
Vihtavuori N340*²<<locked>>60%16,331 psi36%1506 fps94.1%
Vihtavuori N340²<<locked>>60%20,044 psi45%1785 fps99.4%
Vihtavuori N350*²<<locked>>68%17,260 psi38%1564 fps87.7%
Vihtavuori N350*²<<locked>>60%15,403 psi34%1650 fps90.7%
Winchester 231²<<locked>>60%26,731 psi59%1752 fps100%
Winchester 231²<<locked>>60%31,589 psi70%2005 fps100%
Winchester 572²<<locked>>60%34,519 psi77%2152 fps98.7%
Winchester AutoComp ²11.6 gr60%15,737 psi35%1575 fps99%
Winchester AutoComp ²11.6 gr60%19,145 psi43%1726 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 | 75gr | Lehigh Defense Controlled Fracturing. Alliant POWER PISTOL delivers the highest muzzle velocity at 2,408 fps; across all powders the maximum-charge window runs from 1,266 fps to 2,408 fps. ADI AP 100 gives the best case fill at 100 %, and 85 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 25–90 %, leaving at least 10 % headroom. ADI AP 100, ADI AP 100, Alliant BLUE DOT 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. Rottweil P 806, Vihtavuori 3N37, Winchester AutoComp rank at the top here: for .357 Maximum with the .355 | 75gr | Lehigh Defense Controlled Fracturing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate No. 7, ADI AP 100, Alliant BLUE DOT 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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