Load Specifications
Load data in caliber 7.65 x 25 Borchardt with .307 | 110gr | Prvi Partizan SP RN bullet and 35 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N32C Tin Star, Hodgdon TrailBoss and ReloadSwiss RS 14.
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>> | 64% | 25,701 psi | 89% | 1096 fps | 99.9% |
| Accurate Solo 1000² | <<locked>> | 64% | 26,063 psi | 90% | 1017 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 68% | 25,150 psi | 87% | 1060 fps | 100% |
| ADI AP 100* | <<locked>> | 84% | 24,758 psi | 85% | 1142 fps | 93.4% |
| Alliant BE-86² | <<locked>> | 68% | 26,237 psi | 90% | 1070 fps | 100% |
| Alliant Green Dot² | <<locked>> | 64% | 25,541 psi | 88% | 1024 fps | 100% |
| Alliant Herco | <<locked>> | 80% | 25,019 psi | 86% | 1112 fps | 100% |
| Alliant POWER PISTOL*² | <<locked>> | 68% | 23,902 psi | 82% | 1158 fps | 92% |
| Alliant RED DOT² | <<locked>> | 64% | 25,788 psi | 89% | 1001 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 68% | 25,483 psi | 88% | 1122 fps | 100% |
| Baschieri & Pellagri 100² | <<locked>> | 64% | 25,527 psi | 88% | 1017 fps | 100% |
| Baschieri & Pellagri 102 Pistol | <<locked>> | 80% | 24,627 psi | 85% | 1027 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 64% | 25,773 psi | 89% | 1076 fps | 100% |
| Hodgdon Clays² | <<locked>> | 68% | 24,482 psi | 84% | 932 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 17,405 psi | 60% | 863 fps | 100% |
| Maxam CSB 1² | <<locked>> | 68% | 24,062 psi | 83% | 1040 fps | 100% |
| Maxam CSB 2² | <<locked>> | 64% | 22,902 psi | 79% | 1027 fps | 100% |
| Maxam CSB 3² | <<locked>> | 64% | 23,757 psi | 82% | 1014 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 15,824 psi | 55% | 860 fps | 100% |
| ReloadSwiss RS 20² | <<locked>> | 72% | 25,889 psi | 89% | 1135 fps | 100% |
| Rottweil P 806² | <<locked>> | 76% | 23,322 psi | 80% | 1198 fps | 97.2% |
| SNPE Vectan A0² | <<locked>> | 72% | 25,904 psi | 89% | 1093 fps | 100% |
| SNPE Vectan BA 9² | <<locked>> | 64% | 25,875 psi | 89% | 1070 fps | 100% |
| SNPE Vectan BA7 1/2² | <<locked>> | 76% | 24,947 psi | 86% | 1119 fps | 97.8% |
| SNPE Vectan BA9 1/2² | <<locked>> | 64% | 25,454 psi | 88% | 1070 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 64% | 23,293 psi | 80% | 1161 fps | 93.7% |
| Somchem MP200² | <<locked>> | 64% | 26,034 psi | 90% | 1125 fps | 100% |
| Somchem MS200² | <<locked>> | 64% | 23,714 psi | 82% | 1066 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 68% | 23,714 psi | 82% | 1119 fps | 98.1% |
| Vihtavuori N105* | <<locked>> | 92% | 24,598 psi | 85% | 1220 fps | 91.7% |
| Vihtavuori N32C Tin Star | <<locked>> | 92% | 25,802 psi | 89% | 968 fps | 100% |
| Vihtavuori N330² | <<locked>> | 64% | 25,875 psi | 89% | 1089 fps | 100% |
| Vihtavuori N340² | <<locked>> | 68% | 26,005 psi | 90% | 1109 fps | 100% |
| Vihtavuori N350² | <<locked>> | 76% | 25,425 psi | 88% | 1148 fps | 98.9% |
| Winchester AutoComp ² | <<locked>> | 68% | 25,048 psi | 86% | 1073 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% | 22,147 psi | 76% | 1037 fps | 99.4% |
| Accurate Solo 1000² | <<locked>> | 60% | 23,583 psi | 81% | 984 fps | 100% |
| Accurate Solo 1250² | <<locked>> | 60% | 20,769 psi | 72% | 991 fps | 100% |
| ADI AP 100*² | <<locked>> | 68% | 16,955 psi | 58% | 978 fps | 86.9% |
| Alliant BE-86² | <<locked>> | 60% | 21,205 psi | 73% | 994 fps | 100% |
| Alliant Green Dot² | <<locked>> | 60% | 23,177 psi | 80% | 991 fps | 100% |
| Alliant Herco² | <<locked>> | 60% | 15,418 psi | 53% | 919 fps | 98.2% |
| Alliant POWER PISTOL*² | <<locked>> | 60% | 19,667 psi | 68% | 1070 fps | 88.6% |
| Alliant RED DOT² | <<locked>> | 60% | 23,250 psi | 80% | 965 fps | 100% |
| Alliant UNIQUE² | <<locked>> | 60% | 20,465 psi | 71% | 1030 fps | 99.9% |
| Baschieri & Pellagri 100² | <<locked>> | 60% | 23,206 psi | 80% | 984 fps | 100% |
| Baschieri & Pellagri 102 Pistol² | <<locked>> | 60% | 15,069 psi | 52% | 863 fps | 100% |
| Hodgdon CFE Pistol² | <<locked>> | 60% | 22,698 psi | 78% | 1030 fps | 100% |
| Hodgdon Clays² | <<locked>> | 60% | 20,958 psi | 72% | 883 fps | 100% |
| Hodgdon TrailBoss² | 1.9 gr | 60% | 8,775 psi | 30% | 646 fps | 100% |
| Maxam CSB 1² | <<locked>> | 60% | 19,058 psi | 66% | 955 fps | 100% |
| Maxam CSB 2² | <<locked>> | 60% | 20,827 psi | 72% | 994 fps | 100% |
| Maxam CSB 3² | <<locked>> | 60% | 21,538 psi | 74% | 978 fps | 100% |
| ReloadSwiss RS 14² | 1.9 gr | 60% | 8,282 psi | 29% | 643 fps | 99.7% |
| ReloadSwiss RS 20² | <<locked>> | 60% | 18,898 psi | 65% | 1017 fps | 100% |
| Rottweil P 806*² | <<locked>> | 60% | 14,112 psi | 49% | 984 fps | 89.6% |
| SNPE Vectan A0² | <<locked>> | 60% | 19,087 psi | 66% | 974 fps | 99.5% |
| SNPE Vectan BA 9² | <<locked>> | 60% | 22,785 psi | 79% | 1024 fps | 100% |
| SNPE Vectan BA7 1/2*² | <<locked>> | 60% | 16,331 psi | 56% | 942 fps | 92.2% |
| SNPE Vectan BA9 1/2² | <<locked>> | 60% | 22,307 psi | 77% | 1020 fps | 100% |
| SNPE Vectan SP 2*² | <<locked>> | 60% | 20,726 psi | 71% | 1109 fps | 91.9% |
| Somchem MP200² | <<locked>> | 60% | 23,076 psi | 80% | 1073 fps | 99.9% |
| Somchem MS200² | <<locked>> | 60% | 21,669 psi | 75% | 1030 fps | 100% |
| Vihtavuori 3N37² | <<locked>> | 60% | 18,681 psi | 64% | 1020 fps | 95.5% |
| Vihtavuori N105* | <<locked>> | 80% | 18,391 psi | 63% | 1086 fps | 85.8% |
| Vihtavuori N32C Tin Star² | 2.6 gr | 60% | 13,880 psi | 48% | 774 fps | 100% |
| Vihtavuori N330² | <<locked>> | 60% | 23,554 psi | 81% | 1053 fps | 100% |
| Vihtavuori N340² | <<locked>> | 60% | 20,784 psi | 72% | 1020 fps | 100% |
| Vihtavuori N350*² | <<locked>> | 60% | 16,027 psi | 55% | 958 fps | 93.7% |
| Winchester AutoComp ² | <<locked>> | 60% | 20,552 psi | 71% | 997 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 4 powders for 7.65 x 25 Borchardt loaded with the .307 | 110gr | Prvi Partizan SP RN. ADI AP 100 delivers the highest muzzle velocity at 1,142 fps; across all powders the maximum-charge window runs from 860 fps to 1,142 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 4 of the 4 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (200 MPa), the top charges use 55–89 %, leaving at least 11 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14 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 N32C Tin Star, Hodgdon TrailBoss, ReloadSwiss RS 14 rank at the top here: for 7.65 x 25 Borchardt with the .307 | 110gr | Prvi Partizan SP RN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AP 100 burn incompletely and react more sensitively to barrel length and temperature. ADI AP 100, 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.