Load Specifications
Load data in caliber 6.5 x 52 Carcano with .268 | 139gr | Prvi Partizan FMJ BT bullet and 25 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Vihtavuori N555 and ReloadSwiss RS 70.
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 ≥ 80% and propellant combustion ≥ 95%. 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: 27.7"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 98% | 36,230 psi | 88% | 2457 fps | 95.8% |
| Accurate 4350 | <<locked>> | 88% | 36,260 psi | 88% | 2470 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 88% | 36,608 psi | 89% | 2484 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 84% | 35,969 psi | 87% | 2503 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 98% | 35,476 psi | 86% | 2497 fps | 98.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,274 psi | 88% | 2572 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 35,621 psi | 86% | 2428 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,578 psi | 86% | 1617 fps | 100% |
| IMR 4831 | <<locked>> | 88% | 35,201 psi | 85% | 2431 fps | 97.4% |
| Lovex S065 | <<locked>> | 84% | 35,998 psi | 87% | 2375 fps | 95.9% |
| Norma URP | <<locked>> | 88% | 36,550 psi | 88% | 2470 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,824 psi | 87% | 1654 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 35,969 psi | 87% | 2510 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,013 psi | 87% | 2490 fps | 97.3% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 36,303 psi | 88% | 2497 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 82% | 36,318 psi | 88% | 2418 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 35,998 psi | 87% | 2375 fps | 95.9% |
| Somchem S355 | <<locked>> | 82% | 37,391 psi | 90% | 2428 fps | 99.1% |
| Somchem S365 | <<locked>> | 92% | 37,173 psi | 90% | 2526 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 35,433 psi | 86% | 2362 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 86% | 35,897 psi | 87% | 2421 fps | 97.2% |
| Vihtavuori N550 | <<locked>> | 86% | 35,143 psi | 85% | 2421 fps | 96.9% |
| Vihtavuori N555 | <<locked>> | 96% | 35,955 psi | 87% | 2516 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 35,839 psi | 87% | 2398 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,504 psi | 81% | 2546 fps | 99.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 27.7"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 33,881 psi | 82% | 2408 fps | 95% |
| Accurate 4350 | <<locked>> | 82% | 29,530 psi | 71% | 2316 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 82% | 30,385 psi | 74% | 2329 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 31,473 psi | 76% | 2392 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 88% | 26,179 psi | 63% | 2244 fps | 95.1% |
| Alliant Reloder-26 | 39.8 gr | 92% | 31,778 psi | 77% | 2457 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 26,063 psi | 63% | 2185 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,237 psi | 63% | 1437 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 28,921 psi | 70% | 2280 fps | 95% |
| Lovex S065 | <<locked>> | 82% | 34,098 psi | 82% | 2333 fps | 95.3% |
| Norma URP | <<locked>> | 82% | 30,139 psi | 73% | 2320 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,847 psi | 65% | 1480 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,489 psi | 81% | 2454 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 31,459 psi | 76% | 2382 fps | 95.6% |
| ReloadSwiss RS 70 | 36.8 gr | 86% | 33,895 psi | 82% | 2438 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 34,026 psi | 82% | 2369 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 34,098 psi | 82% | 2333 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 35,099 psi | 85% | 2379 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 25,367 psi | 61% | 2224 fps | 96.7% |
| Vihtavuori N150 | <<locked>> | 80% | 33,185 psi | 80% | 2313 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 31,575 psi | 76% | 2320 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 82% | 30,951 psi | 75% | 2323 fps | 95.3% |
| Vihtavuori N555 | 34.7 gr | 88% | 27,775 psi | 67% | 2313 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,472 psi | 71% | 2247 fps | 97.1% |
| Winchester StaBALL HD | <<locked>> | 92% | 26,107 psi | 63% | 2310 fps | 95.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 25 powders for 6.5 x 52 Carcano loaded with the .268 | 139gr | Prvi Partizan FMJ BT . Alliant Reloder-26 delivers the highest muzzle velocity at 2,572 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,572 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 25 of the 25 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (285 MPa), the top charges use 81–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.268" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Winchester StaBALL HD 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 Reloder-26, Vihtavuori N555, ReloadSwiss RS 70 rank at the top here: for 6.5 x 52 Carcano with the .268 | 139gr | Prvi Partizan FMJ BT they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.