Load data for 9 mm Mauser + .356 | 123gr | LOS RN

9 mm Mauser cartridge drawing
LOS logo

Load Specifications

Bullet Manufacturer:LOS
Bullet Weight:123 gr
Bullet Diameter:0.356"
Bullet Length:<<locked>>
Case Length (l3):0.984"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:18.9 Grains of Water
Primer Size:Small Pistol (SP)
Barrel Length:5.5"
Max. allowed Pressure:37,710 psi

Load data in caliber 9 mm Mauser with .356 | 123gr | LOS RN bullet and 63 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 N350 and ReloadSwiss RS 20.

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: 5.5"

PowderChargeFRMaxP%V(0)z
Accurate No. 2²<<locked>>76%32,343 psi86%1309 fps99.9%
Accurate No. 5²<<locked>>64%33,707 psi89%1407 fps96.1%
Accurate Solo 1000²<<locked>>76%31,618 psi84%1214 fps100%
Accurate Solo 1250<<locked>>84%33,779 psi90%1302 fps100%
ADI AP 100*ᴾ<<locked>>100%32,256 psi86%1381 fps93.8%
ADI AP 70N²<<locked>>68%32,082 psi85%1293 fps100%
ADI APS 350²<<locked>>72%32,314 psi86%1109 fps100%
ADI APS 450²<<locked>>76%32,895 psi87%1155 fps100%
ADI AS 30²<<locked>>76%32,198 psi85%1188 fps100%
ADI AS 50N²<<locked>>72%31,082 psi82%1220 fps100%
Alliant BE-86<<locked>>80%31,778 psi84%1266 fps100%
Alliant BULLSEYE²<<locked>>72%32,242 psi86%1348 fps100%
Alliant Green Dot²<<locked>>76%31,691 psi84%1234 fps100%
Alliant Herco<<locked>>96%30,980 psi82%1332 fps100%
Alliant POWER PISTOL*<<locked>>84%33,359 psi88%1447 fps93.7%
Alliant RED DOT<<locked>>80%33,794 psi90%1230 fps100%
Alliant Sport Pistol²<<locked>>68%32,793 psi87%1358 fps100%
Alliant UNIQUE<<locked>>84%33,707 psi89%1375 fps100%
Baschieri & Pellagri 100²<<locked>>76%31,372 psi83%1217 fps100%
Baschieri & Pellagri 102 Pistolᴾ<<locked>>100%33,547 psi89%1263 fps100%
Baschieri & Pellagri 103 Pistol²<<locked>>72%30,545 psi81%1234 fps100%
Hodgdon Clays<<locked>>84%32,489 psi86%1148 fps100%
Hodgdon HS-6²<<locked>>68%31,734 psi84%1362 fps97.1%
Hodgdon Longshot²<<locked>>64%31,328 psi83%1355 fps98.2%
Hodgdon TrailBossᴾ<<locked>>100%15,490 psi41%925 fps100%
Hodgdon Universal²<<locked>>76%33,040 psi88%1306 fps100%
Lovex D036²<<locked>>64%33,649 psi89%1407 fps96.1%
Lovex S011²<<locked>>68%32,851 psi87%1260 fps100%
Lovex S020²<<locked>>76%33,141 psi88%1325 fps100%
Maxam CSB 1<<locked>>88%33,852 psi90%1299 fps100%
Maxam CSB 2<<locked>>84%33,982 psi90%1309 fps100%
Maxam CSB 3<<locked>>80%31,807 psi84%1250 fps100%
Maxam CSB 4²<<locked>>76%31,140 psi83%1220 fps100%
Maxam CSB 5²<<locked>>72%32,692 psi87%1188 fps100%
Ramshot Silhouette²<<locked>>68%31,778 psi84%1345 fps100%
Ramshot True Blue²<<locked>>64%31,850 psi84%1355 fps98.4%
ReloadSwiss RS 12²<<locked>>72%33,315 psi88%1283 fps100%
ReloadSwiss RS 14ᴾ<<locked>>100%14,504 psi38%932 fps100%
ReloadSwiss RS 20<<locked>>84%30,792 psi82%1339 fps100%
ReloadSwiss RS 24*<<locked>>88%33,692 psi89%1437 fps87.6%
Rottweil P 801²<<locked>>68%33,968 psi90%1253 fps100%
Rottweil P 806<<locked>>92%31,691 psi84%1463 fps97.9%
Shooters World Auto Pistol²<<locked>>64%33,649 psi89%1407 fps96.1%
SNPE Vectan A0<<locked>>84%30,908 psi82%1289 fps100%
SNPE Vectan A1²<<locked>>76%32,547 psi86%1270 fps100%
SNPE Vectan BA 9²<<locked>>76%31,488 psi84%1270 fps100%
SNPE Vectan BA10²<<locked>>72%33,982 psi90%1168 fps100%
SNPE Vectan BA7 1/2<<locked>>92%33,243 psi88%1365 fps98.3%
SNPE Vectan BA9 1/2²<<locked>>76%30,400 psi81%1263 fps100%
SNPE Vectan SP 2<<locked>>80%32,967 psi87%1457 fps95.4%
Somchem MP200²<<locked>>76%32,285 psi86%1342 fps100%
Somchem MS200<<locked>>80%31,676 psi84%1312 fps100%
Somchem S221*²<<locked>>72%32,358 psi86%1394 fps90.5%
Vihtavuori 3N37<<locked>>84%31,633 psi84%1371 fps98.6%
Vihtavuori 3N38*ᴾ<<locked>>100%31,894 psi85%1398 fps87.6%
Vihtavuori N105*ᴾ<<locked>>100%26,078 psi69%1355 fps88.1%
Vihtavuori N320²<<locked>>72%31,053 psi82%1227 fps100%
Vihtavuori N32C Tin Starᴾ<<locked>>100%27,311 psi72%1106 fps100%
Vihtavuori N330²<<locked>>76%32,576 psi86%1306 fps100%
Vihtavuori N340<<locked>>80%31,314 psi83%1309 fps100%
Vihtavuori N350<<locked>>92%34,011 psi90%1401 fps99.3%
Winchester 231²<<locked>>64%31,009 psi82%1257 fps100%
Winchester AutoComp <<locked>>84%32,895 psi87%1309 fps100%

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

Start Load - Barrel Length: 5.5"

PowderChargeFRMaxP%V(0)z
Accurate No. 2²<<locked>>60%19,754 psi52%1093 fps96.5%
Accurate No. 5*²<<locked>>60%29,573 psi78%1342 fps94.5%
Accurate Solo 1000²<<locked>>60%21,582 psi57%1063 fps100%
Accurate Solo 1250²<<locked>>60%17,883 psi47%1043 fps100%
ADI AP 100*<<locked>>80%20,117 psi53%1148 fps86%
ADI AP 70N²<<locked>>60%25,889 psi69%1201 fps100%
ADI APS 350²<<locked>>60%23,902 psi63%997 fps100%
ADI APS 450²<<locked>>60%23,206 psi62%1020 fps100%
ADI AS 30²<<locked>>60%21,828 psi58%1037 fps100%
ADI AS 50N²<<locked>>60%22,960 psi61%1099 fps100%
Alliant BE-86²<<locked>>60%19,043 psi51%1066 fps100%
Alliant BULLSEYE²<<locked>>60%22,713 psi60%1184 fps99.7%
Alliant Green Dot²<<locked>>60%21,089 psi56%1066 fps100%
Alliant Herco*²<<locked>>60%14,112 psi37%974 fps94.7%
Alliant POWER PISTOL*²<<locked>>68%21,176 psi56%1207 fps85.9%
Alliant RED DOT²<<locked>>60%21,292 psi56%1043 fps100%
Alliant Sport Pistol²<<locked>>60%25,715 psi68%1243 fps99.9%
Alliant UNIQUE²<<locked>>60%18,434 psi49%1096 fps97.8%
Baschieri & Pellagri 100²<<locked>>60%20,204 psi54%1047 fps100%
Baschieri & Pellagri 102 Pistol²<<locked>>60%13,648 psi36%928 fps100%
Baschieri & Pellagri 103 Pistol²<<locked>>60%21,741 psi58%1106 fps100%
Hodgdon Clays²<<locked>>60%19,000 psi50%948 fps100%
Hodgdon HS-6*²<<locked>>60%24,540 psi65%1237 fps93.9%
Hodgdon Longshot²<<locked>>60%27,586 psi73%1293 fps97%
Hodgdon TrailBoss²<<locked>>60%8,151 psi22%699 fps99.9%
Hodgdon Universal²<<locked>>60%22,060 psi59%1132 fps100%
Lovex D036*²<<locked>>60%29,646 psi79%1342 fps94.5%
Lovex S011²<<locked>>60%26,963 psi72%1178 fps100%
Lovex S020²<<locked>>60%21,002 psi56%1132 fps99.8%
Maxam CSB 1²<<locked>>60%17,303 psi46%1024 fps99.9%
Maxam CSB 2²<<locked>>60%18,260 psi48%1063 fps100%
Maxam CSB 3²<<locked>>60%19,899 psi53%1063 fps100%
Maxam CSB 4²<<locked>>60%21,321 psi57%1070 fps100%
Maxam CSB 5²<<locked>>60%23,670 psi63%1063 fps100%
Ramshot Silhouette²<<locked>>60%24,743 psi66%1230 fps99%
Ramshot True Blue²<<locked>>60%27,963 psi74%1293 fps97.2%
ReloadSwiss RS 12²<<locked>>60%24,308 psi64%1155 fps100%
ReloadSwiss RS 14²<<locked>>60%7,716 psi20%689 fps97.7%
ReloadSwiss RS 20²5.1 gr60%16,317 psi43%1066 fps98.4%
ReloadSwiss RS 24*<<locked>>84%30,545 psi81%1388 fps85.9%
Rottweil P 801²<<locked>>60%27,441 psi73%1168 fps100%
Rottweil P 806*²8.6 gr68%15,026 psi40%1112 fps86.5%
Shooters World Auto Pistol*²<<locked>>60%29,646 psi79%1342 fps94.5%
SNPE Vectan A0²<<locked>>60%17,376 psi46%1033 fps97%
SNPE Vectan A1²<<locked>>60%21,509 psi57%1099 fps100%
SNPE Vectan BA 9²<<locked>>60%20,668 psi55%1096 fps100%
SNPE Vectan BA10²<<locked>>60%25,933 psi69%1063 fps100%
SNPE Vectan BA7 1/2*²<<locked>>60%14,837 psi39%991 fps86.7%
SNPE Vectan BA9 1/2²<<locked>>60%20,218 psi54%1093 fps100%
SNPE Vectan SP 2*²<<locked>>60%18,115 psi48%1152 fps85.4%
Somchem MP200²<<locked>>60%20,929 psi56%1142 fps98.1%
Somchem MS200²<<locked>>60%19,435 psi52%1093 fps98.9%
Somchem S221*²<<locked>>64%25,469 psi68%1270 fps86.3%
Vihtavuori 3N37*²<<locked>>60%16,578 psi44%1070 fps90.2%
Vihtavuori 3N38*<<locked>>96%28,892 psi77%1348 fps85.8%
Vihtavuori N105*<<locked>>96%23,409 psi62%1299 fps85.9%
Vihtavuori N320²<<locked>>60%21,727 psi58%1089 fps100%
Vihtavuori N32C Tin Star²<<locked>>60%12,372 psi33%833 fps100%
Vihtavuori N330²<<locked>>60%20,421 psi54%1119 fps100%
Vihtavuori N340²<<locked>>60%18,246 psi48%1073 fps98%
Vihtavuori N350*²5.5 gr60%14,504 psi38%1007 fps88.2%
Winchester 231²<<locked>>60%28,268 psi75%1217 fps100%
Winchester AutoComp ²<<locked>>60%18,275 psi48%1060 fps99.9%

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.

<<locked>> you need an access license to unlock this data.

This overview compares 63 powders for 9 mm Mauser loaded with the .356 | 123gr | LOS RN. Rottweil P 806 delivers the highest muzzle velocity at 1,463 fps; across all powders the maximum-charge window runs from 925 fps to 1,463 fps. ADI AP 100 gives the best case fill at 100 %, and 28 of the 63 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (260 MPa), the top charges use 38–90 %, leaving at least 10 % headroom. ADI AP 100, Baschieri & Pellagri 102 Pistol, 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. Rottweil P 806, Vihtavuori N350, ReloadSwiss RS 20 rank at the top here: for 9 mm Mauser with the .356 | 123gr | LOS RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AP 100, Alliant POWER PISTOL, ReloadSwiss RS 24 burn incompletely and react more sensitively to barrel length and temperature. Accurate No. 2, Accurate Solo 1000, Accurate Solo 1250 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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