Load Specifications
Load data in caliber 7.63 Mauser with .312 | 90gr | Sierra Sports Master bullet and 57 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Herco, Baschieri & Pellagri 102 Pistol and Vihtavuori N32C Tin Star.
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"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 72% | 33,460 psi | 89% | 1447 fps | 100% |
| Accurate Solo 1000² | <<locked>> | 72% | 33,141 psi | 88% | 1342 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 76% | 31,879 psi | 85% | 1388 fps | 100% |
| ADI AP 100 | <<locked>> | 92% | 31,705 psi | 84% | 1499 fps | 96.1% |
| ADI AP 70N² | <<locked>> | 64% | 32,779 psi | 87% | 1414 fps | 100% |
| ADI APS 350² | <<locked>> | 68% | 31,836 psi | 84% | 1211 fps | 100% |
| ADI APS 450² | <<locked>> | 72% | 32,735 psi | 87% | 1257 fps | 100% |
| ADI AS 30² | <<locked>> | 72% | 32,155 psi | 85% | 1296 fps | 100% |
| ADI AS 50N² | <<locked>> | 68% | 31,372 psi | 83% | 1332 fps | 100% |
| Alliant BE-86² | <<locked>> | 76% | 32,851 psi | 87% | 1388 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 96% | 33,359 psi | 88% | 1565 fps | 87% |
| Alliant BULLSEYE² | <<locked>> | 68% | 32,518 psi | 86% | 1467 fps | 100% |
| Alliant Green Dot² | <<locked>> | 72% | 31,981 psi | 85% | 1345 fps | 100% |
| Alliant Herco | <<locked>> | 92% | 33,011 psi | 88% | 1473 fps | 100% |
| Alliant POWER PISTOL² | <<locked>> | 76% | 31,227 psi | 83% | 1535 fps | 95.2% |
| Alliant RED DOT² | <<locked>> | 76% | 33,910 psi | 90% | 1342 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 64% | 33,127 psi | 88% | 1480 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 76% | 32,140 psi | 85% | 1467 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 72% | 32,053 psi | 85% | 1332 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 92% | 32,750 psi | 87% | 1355 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 68% | 31,647 psi | 84% | 1348 fps | 100% |
| Hodgdon Clays | <<locked>> | 80% | 32,329 psi | 86% | 1250 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 64% | 32,837 psi | 87% | 1503 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 16,186 psi | 43% | 1027 fps | 100% |
| Hodgdon Universal² | <<locked>> | 72% | 33,794 psi | 90% | 1427 fps | 100% |
| Lovex S011² | <<locked>> | 64% | 33,649 psi | 89% | 1381 fps | 100% |
| Lovex S020² | <<locked>> | 68% | 30,313 psi | 80% | 1398 fps | 100% |
| Maxam CSB 1 | <<locked>> | 80% | 32,082 psi | 85% | 1385 fps | 100% |
| Maxam CSB 2² | <<locked>> | 76% | 32,285 psi | 86% | 1391 fps | 100% |
| Maxam CSB 3² | <<locked>> | 76% | 33,707 psi | 89% | 1381 fps | 100% |
| Maxam CSB 4² | <<locked>> | 72% | 32,880 psi | 87% | 1348 fps | 100% |
| Maxam CSB 5² | <<locked>> | 68% | 32,982 psi | 87% | 1296 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 64% | 32,503 psi | 86% | 1470 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 64% | 30,298 psi | 80% | 1345 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 14,924 psi | 40% | 1033 fps | 100% |
| ReloadSwiss RS 20 | <<locked>> | 80% | 34,040 psi | 90% | 1490 fps | 100% |
| ReloadSwiss RS 24* | <<locked>> | 80% | 33,083 psi | 88% | 1562 fps | 90.7% |
| Rottweil P 806 | <<locked>> | 84% | 31,865 psi | 85% | 1572 fps | 99.2% |
| SNPE Vectan A0 | <<locked>> | 80% | 33,127 psi | 88% | 1437 fps | 100% |
| SNPE Vectan A1² | <<locked>> | 72% | 33,504 psi | 89% | 1388 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 72% | 32,576 psi | 86% | 1398 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 68% | 33,823 psi | 90% | 1270 fps | 100% |
| SNPE Vectan BA7 1/2 | <<locked>> | 84% | 31,546 psi | 84% | 1463 fps | 99.3% |
| SNPE Vectan BA9 1/2² | <<locked>> | 72% | 31,285 psi | 83% | 1385 fps | 100% |
| SNPE Vectan SP 2² | <<locked>> | 72% | 31,430 psi | 83% | 1549 fps | 96.9% |
| Somchem MP200² | <<locked>> | 72% | 33,591 psi | 89% | 1476 fps | 100% |
| Somchem MS200² | <<locked>> | 76% | 32,808 psi | 87% | 1444 fps | 100% |
| Somchem S221*² | <<locked>> | 68% | 33,417 psi | 89% | 1542 fps | 93.9% |
| Vihtavuori 3N37 | <<locked>> | 80% | 33,881 psi | 90% | 1522 fps | 99.9% |
| Vihtavuori 3N38* | <<locked>> | 92% | 31,372 psi | 83% | 1522 fps | 90.7% |
| Vihtavuori N105ᴾ | <<locked>> | 100% | 33,417 psi | 89% | 1617 fps | 95.7% |
| Vihtavuori N320² | <<locked>> | 68% | 31,836 psi | 84% | 1339 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 30,211 psi | 80% | 1240 fps | 100% |
| Vihtavuori N330² | <<locked>> | 68% | 29,994 psi | 80% | 1375 fps | 100% |
| Vihtavuori N340² | <<locked>> | 76% | 32,605 psi | 86% | 1440 fps | 100% |
| Vihtavuori N350 | <<locked>> | 84% | 32,576 psi | 86% | 1496 fps | 99.9% |
| Winchester AutoComp ² | <<locked>> | 76% | 31,473 psi | 83% | 1398 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 5.5"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 2² | <<locked>> | 60% | 22,437 psi | 60% | 1260 fps | 99.2% |
| Accurate Solo 1000² | <<locked>> | 60% | 24,163 psi | 64% | 1204 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 20,146 psi | 53% | 1188 fps | 100% |
| ADI AP 100*² | <<locked>> | 68% | 16,926 psi | 45% | 1171 fps | 85.8% |
| ADI AP 70N² | <<locked>> | 60% | 28,906 psi | 77% | 1355 fps | 100% |
| ADI APS 350² | <<locked>> | 60% | 26,397 psi | 70% | 1132 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 24,700 psi | 66% | 1138 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 24,076 psi | 64% | 1175 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 25,469 psi | 68% | 1240 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 21,263 psi | 56% | 1201 fps | 100% |
| Alliant BLUE DOT* | <<locked>> | 92% | 30,226 psi | 80% | 1506 fps | 85.2% |
| Alliant BULLSEYE² | <<locked>> | 60% | 25,802 psi | 68% | 1352 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 23,380 psi | 62% | 1207 fps | 100% |
| Alliant Herco² | 5 gr | 60% | 15,127 psi | 40% | 1102 fps | 97.3% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 19,595 psi | 52% | 1276 fps | 87.4% |
| Alliant RED DOT² | <<locked>> | 60% | 22,626 psi | 60% | 1168 fps | 100% |
| Alliant Sport Pistol² | <<locked>> | 60% | 29,269 psi | 78% | 1417 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 20,479 psi | 54% | 1247 fps | 99.7% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 22,524 psi | 60% | 1188 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 4.6 gr | 60% | 14,315 psi | 38% | 1030 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 24,801 psi | 66% | 1247 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 20,958 psi | 56% | 1076 fps | 100% |
| Hodgdon HS-6² | <<locked>> | 60% | 28,674 psi | 76% | 1434 fps | 97.9% |
| Hodgdon TrailBoss² | <<locked>> | 60% | 7,702 psi | 20% | 771 fps | 100% |
| Hodgdon Universal² | <<locked>> | 60% | 24,482 psi | 65% | 1280 fps | 100% |
| Lovex S011² | <<locked>> | 60% | 30,443 psi | 81% | 1335 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 23,830 psi | 63% | 1289 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 19,305 psi | 51% | 1165 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 20,595 psi | 55% | 1201 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 22,365 psi | 59% | 1204 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 23,989 psi | 64% | 1214 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 26,556 psi | 70% | 1204 fps | 100% |
| Ramshot Silhouette² | <<locked>> | 60% | 28,979 psi | 77% | 1414 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 27,369 psi | 73% | 1299 fps | 100% |
| ReloadSwiss RS 14² | <<locked>> | 60% | 7,049 psi | 19% | 758 fps | 97.9% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 18,724 psi | 50% | 1217 fps | 99.9% |
| ReloadSwiss RS 24*² | <<locked>> | 72% | 25,512 psi | 68% | 1414 fps | 86% |
| Rottweil P 806*² | <<locked>> | 60% | 13,576 psi | 36% | 1145 fps | 86.7% |
| SNPE Vectan A0² | <<locked>> | 60% | 19,392 psi | 51% | 1184 fps | 99.3% |
| SNPE Vectan A1² | <<locked>> | 60% | 24,047 psi | 64% | 1243 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 23,177 psi | 61% | 1243 fps | 100% |
| SNPE Vectan BA10² | <<locked>> | 60% | 27,586 psi | 73% | 1184 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 60% | 16,259 psi | 43% | 1135 fps | 91.2% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 22,582 psi | 60% | 1240 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 20,842 psi | 55% | 1325 fps | 90.7% |
| Somchem MP200² | <<locked>> | 60% | 23,409 psi | 62% | 1299 fps | 99.8% |
| Somchem MS200² | <<locked>> | 60% | 21,683 psi | 57% | 1247 fps | 100% |
| Somchem S221*² | <<locked>> | 60% | 25,338 psi | 67% | 1388 fps | 89.4% |
| Vihtavuori 3N37*² | <<locked>> | 60% | 18,681 psi | 50% | 1224 fps | 94.6% |
| Vihtavuori 3N38* | <<locked>> | 84% | 25,324 psi | 67% | 1404 fps | 86.9% |
| Vihtavuori N105* | <<locked>> | 84% | 20,958 psi | 56% | 1362 fps | 87.5% |
| Vihtavuori N320² | <<locked>> | 60% | 24,685 psi | 65% | 1234 fps | 100% |
| Vihtavuori N32C Tin Star² | 3.6 gr | 60% | 12,633 psi | 34% | 925 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 23,453 psi | 62% | 1270 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 20,494 psi | 54% | 1227 fps | 99.8% |
| Vihtavuori N350*² | <<locked>> | 60% | 16,230 psi | 43% | 1158 fps | 92.9% |
| Winchester AutoComp ² | <<locked>> | 60% | 20,117 psi | 53% | 1198 fps | 100% |
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 57 powders for 7.63 Mauser loaded with the .312 | 90gr | Sierra Sports Master. Vihtavuori N105 delivers the highest muzzle velocity at 1,617 fps; across all powders the maximum-charge window runs from 1,027 fps to 1,617 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 18 of the 57 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (260 MPa), the top charges use 40–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N105 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 Herco, Baschieri & Pellagri 102 Pistol, Vihtavuori N32C Tin Star rank at the top here: for 7.63 Mauser with the .312 | 90gr | Sierra Sports Master they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant BLUE DOT, ReloadSwiss RS 24, Somchem S221 burn incompletely and react more sensitively to barrel length and temperature. Alliant Herco, Baschieri & Pellagri 102 Pistol, Hodgdon Clays 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.