Load Specifications
Load data in caliber 7.65 x 25 Borchardt with .309 | 71gr | H&N RN HS bullet and 46 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>> | 68% | 24,569 psi | 85% | 1467 fps | 97.9% |
| Accurate Solo 1000² | <<locked>> | 68% | 25,150 psi | 87% | 1398 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 76% | 26,020 psi | 90% | 1480 fps | 100% |
| ADI AP 100* | <<locked>> | 92% | 25,150 psi | 87% | 1535 fps | 88.6% |
| ADI APS 350² | <<locked>> | 64% | 25,512 psi | 88% | 1276 fps | 100% |
| ADI APS 450² | <<locked>> | 64% | 24,569 psi | 85% | 1299 fps | 100% |
| ADI AS 30² | <<locked>> | 68% | 24,714 psi | 85% | 1362 fps | 100% |
| ADI AS 50N² | <<locked>> | 64% | 23,772 psi | 82% | 1394 fps | 100% |
| Alliant BE-86² | <<locked>> | 72% | 24,381 psi | 84% | 1437 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 64% | 24,221 psi | 84% | 1496 fps | 99.5% |
| Alliant Green Dot² | <<locked>> | 68% | 25,019 psi | 86% | 1404 fps | 100% |
| Alliant Herco | <<locked>> | 88% | 23,685 psi | 82% | 1490 fps | 99.2% |
| Alliant RED DOT² | <<locked>> | 72% | 25,976 psi | 90% | 1407 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 76% | 25,730 psi | 89% | 1542 fps | 99.6% |
| Baschieri & Pellagri 100² | <<locked>> | 68% | 23,627 psi | 81% | 1381 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 88% | 24,221 psi | 84% | 1411 fps | 100% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 68% | 26,078 psi | 90% | 1444 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 72% | 25,976 psi | 90% | 1490 fps | 100% |
| Hodgdon Clays² | <<locked>> | 76% | 26,107 psi | 90% | 1325 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 12,517 psi | 43% | 1089 fps | 100% |
| Hodgdon Universal² | <<locked>> | 68% | 24,497 psi | 84% | 1470 fps | 100% |
| Lovex S020² | <<locked>> | 68% | 24,004 psi | 83% | 1470 fps | 99.9% |
| Maxam CSB 1² | <<locked>> | 76% | 23,670 psi | 82% | 1427 fps | 100% |
| Maxam CSB 2² | <<locked>> | 76% | 25,193 psi | 87% | 1476 fps | 100% |
| Maxam CSB 3² | <<locked>> | 72% | 25,121 psi | 87% | 1434 fps | 100% |
| Maxam CSB 4² | <<locked>> | 68% | 24,453 psi | 84% | 1398 fps | 100% |
| Maxam CSB 5² | <<locked>> | 64% | 24,540 psi | 85% | 1348 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 64% | 24,207 psi | 83% | 1440 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 10,994 psi | 38% | 1070 fps | 99.4% |
| ReloadSwiss RS 20² | <<locked>> | 76% | 23,699 psi | 82% | 1506 fps | 99.9% |
| Rottweil P 806* | <<locked>> | 88% | 25,121 psi | 87% | 1624 fps | 93.7% |
| SNPE Vectan A0² | <<locked>> | 76% | 24,308 psi | 84% | 1457 fps | 99.2% |
| SNPE Vectan A1² | <<locked>> | 68% | 24,932 psi | 86% | 1434 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 68% | 24,018 psi | 83% | 1430 fps | 100% |
| SNPE Vectan BA7 1/2* | <<locked>> | 84% | 25,918 psi | 89% | 1526 fps | 94.6% |
| SNPE Vectan BA9 1/2² | <<locked>> | 72% | 25,599 psi | 88% | 1476 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 72% | 23,960 psi | 83% | 1572 fps | 88.8% |
| Somchem MP200² | <<locked>> | 68% | 24,149 psi | 83% | 1493 fps | 98.6% |
| Somchem MS200² | <<locked>> | 72% | 24,410 psi | 84% | 1476 fps | 99.7% |
| Vihtavuori 3N37*² | <<locked>> | 76% | 24,047 psi | 83% | 1516 fps | 94.7% |
| Vihtavuori N320² | <<locked>> | 68% | 25,657 psi | 88% | 1437 fps | 100% |
| Vihtavuori N32C Tin Starᴾ | <<locked>> | 100% | 24,337 psi | 84% | 1332 fps | 100% |
| Vihtavuori N330² | <<locked>> | 68% | 24,511 psi | 85% | 1476 fps | 100% |
| Vihtavuori N340² | <<locked>> | 72% | 23,801 psi | 82% | 1470 fps | 99.3% |
| Vihtavuori N350 | <<locked>> | 84% | 26,049 psi | 90% | 1558 fps | 96.1% |
| Winchester AutoComp ² | <<locked>> | 76% | 24,860 psi | 86% | 1470 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. 2*² | <<locked>> | 60% | 18,594 psi | 64% | 1319 fps | 94.5% |
| Accurate Solo 1000² | <<locked>> | 60% | 19,798 psi | 68% | 1286 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 16,259 psi | 56% | 1253 fps | 99.3% |
| ADI AP 100* | <<locked>> | 88% | 23,061 psi | 80% | 1483 fps | 86.9% |
| ADI APS 350² | <<locked>> | 60% | 23,424 psi | 81% | 1240 fps | 100% |
| ADI APS 450² | <<locked>> | 60% | 21,785 psi | 75% | 1247 fps | 100% |
| ADI AS 30² | <<locked>> | 60% | 20,102 psi | 69% | 1270 fps | 100% |
| ADI AS 50N² | <<locked>> | 60% | 21,132 psi | 73% | 1339 fps | 100% |
| Alliant BE-86² | <<locked>> | 60% | 16,491 psi | 57% | 1260 fps | 100% |
| Alliant BULLSEYE² | <<locked>> | 60% | 21,698 psi | 75% | 1434 fps | 98.8% |
| Alliant Green Dot² | <<locked>> | 60% | 20,784 psi | 72% | 1319 fps | 100% |
| Alliant Herco*² | 4.8 gr | 60% | 11,139 psi | 38% | 1106 fps | 88.7% |
| Alliant RED DOT² | <<locked>> | 60% | 18,579 psi | 64% | 1257 fps | 100% |
| Alliant UNIQUE*² | <<locked>> | 60% | 15,519 psi | 54% | 1270 fps | 94.3% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 18,594 psi | 64% | 1273 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | 4.5 gr | 60% | 10,863 psi | 37% | 1073 fps | 99.6% |
| Baschieri & Pellagri 103 Pistol² | <<locked>> | 60% | 19,856 psi | 68% | 1325 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 17,724 psi | 61% | 1302 fps | 99.6% |
| Hodgdon Clays² | <<locked>> | 60% | 18,115 psi | 62% | 1171 fps | 100% |
| Hodgdon TrailBoss*² | <<locked>> | 60% | 5,178 psi | 18% | 771 fps | 94.1% |
| Hodgdon Universal² | <<locked>> | 60% | 18,898 psi | 65% | 1342 fps | 100% |
| Lovex S020² | <<locked>> | 60% | 18,347 psi | 63% | 1335 fps | 98.4% |
| Maxam CSB 1² | <<locked>> | 60% | 14,910 psi | 51% | 1211 fps | 98.7% |
| Maxam CSB 2² | <<locked>> | 60% | 15,621 psi | 54% | 1263 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 17,680 psi | 61% | 1273 fps | 100% |
| Maxam CSB 4² | <<locked>> | 60% | 19,203 psi | 66% | 1293 fps | 100% |
| Maxam CSB 5² | <<locked>> | 60% | 22,582 psi | 78% | 1312 fps | 100% |
| ReloadSwiss RS 12² | <<locked>> | 60% | 20,711 psi | 71% | 1375 fps | 100% |
| ReloadSwiss RS 14*² | <<locked>> | 60% | 4,496 psi | 16% | 732 fps | 86.1% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 13,967 psi | 48% | 1240 fps | 95.1% |
| Rottweil P 806*² | <<locked>> | 76% | 16,215 psi | 56% | 1385 fps | 85.3% |
| SNPE Vectan A0*² | <<locked>> | 60% | 15,316 psi | 53% | 1224 fps | 94.1% |
| SNPE Vectan A1² | <<locked>> | 60% | 19,667 psi | 68% | 1319 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 18,855 psi | 65% | 1312 fps | 99.3% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 68% | 16,404 psi | 57% | 1280 fps | 86.8% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 18,507 psi | 64% | 1319 fps | 99.8% |
| SNPE Vectan SP 2*² | <<locked>> | 68% | 20,436 psi | 70% | 1483 fps | 85.7% |
| Somchem MP200² | <<locked>> | 60% | 18,405 psi | 63% | 1345 fps | 95.6% |
| Somchem MS200² | <<locked>> | 60% | 17,056 psi | 59% | 1289 fps | 96.7% |
| Vihtavuori 3N37*² | <<locked>> | 64% | 16,230 psi | 56% | 1306 fps | 87.9% |
| Vihtavuori N320² | <<locked>> | 60% | 20,059 psi | 69% | 1325 fps | 100% |
| Vihtavuori N32C Tin Star² | 3.5 gr | 60% | 9,152 psi | 32% | 968 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 18,594 psi | 64% | 1348 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 16,433 psi | 57% | 1283 fps | 95.7% |
| Vihtavuori N350*² | <<locked>> | 64% | 14,054 psi | 48% | 1234 fps | 85.5% |
| Winchester AutoComp ² | <<locked>> | 60% | 15,534 psi | 54% | 1243 fps | 98.3% |
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 8 powders for 7.65 x 25 Borchardt loaded with the .309 | 71gr | H&N RN HS. Rottweil P 806 delivers the highest muzzle velocity at 1,624 fps; across all powders the maximum-charge window runs from 1,070 fps to 1,624 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 8 of the 8 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (200 MPa), the top charges use 38–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14, Vihtavuori N32C Tin Star 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 7.65 x 25 Borchardt with the .309 | 71gr | H&N RN HS they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Rottweil P 806, SNPE Vectan BA7 1/2 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.