Load Specifications
Load data in caliber 6.5 x 70 R with .263 | 123gr | Prvi Partizan SP bullet and 31 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Accurate 4064 and SNPE Vectan Tubal 5000.
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.
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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 88% | 35,897 psi | 88% | 2339 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 35,882 psi | 88% | 2339 fps | 98.1% |
| Accurate 4064 | <<locked>> | 90% | 36,376 psi | 90% | 2372 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 36,579 psi | 90% | 2313 fps | 96.5% |
| Alliant AR-Comp | <<locked>> | 82% | 34,795 psi | 86% | 2329 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 35,940 psi | 89% | 2356 fps | 96% |
| Bofors RP3 | <<locked>> | 90% | 35,317 psi | 87% | 2356 fps | 96% |
| Hodgdon BL-C2 | <<locked>> | 84% | 36,390 psi | 90% | 2369 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,794 psi | 83% | 1532 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 35,172 psi | 87% | 2359 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 82% | 36,579 psi | 90% | 2313 fps | 96.5% |
| Lovex D073.6 | <<locked>> | 86% | 36,622 psi | 90% | 2365 fps | 98.3% |
| Lovex S062 | <<locked>> | 88% | 36,434 psi | 90% | 2329 fps | 96.6% |
| Norma 201 | <<locked>> | 84% | 35,868 psi | 88% | 2300 fps | 96.4% |
| Norma 202 | <<locked>> | 84% | 35,882 psi | 88% | 2323 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,924 psi | 84% | 1568 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 36,332 psi | 89% | 2428 fps | 97.5% |
| Rottweil R 902 | <<locked>> | 86% | 36,448 psi | 90% | 2306 fps | 96.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 36,622 psi | 90% | 2365 fps | 98.3% |
| Shooters World Precision | <<locked>> | 88% | 36,434 psi | 90% | 2329 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 35,810 psi | 88% | 2238 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 35,070 psi | 86% | 2244 fps | 99.1% |
| Somchem S335 | <<locked>> | 82% | 34,998 psi | 86% | 2241 fps | 99% |
| Somchem S355 | <<locked>> | 92% | 36,738 psi | 90% | 2359 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 82% | 35,636 psi | 88% | 2244 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 86% | 34,708 psi | 85% | 2303 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 86% | 35,926 psi | 88% | 2303 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 92% | 35,041 psi | 86% | 2303 fps | 96.7% |
| Vihtavuori N530 | <<locked>> | 82% | 36,419 psi | 90% | 2310 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 86% | 34,621 psi | 85% | 2297 fps | 98.2% |
| Winchester 748 | <<locked>> | 82% | 34,998 psi | 86% | 2339 fps | 97% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 27,644 psi | 68% | 2162 fps | 99% |
| Accurate 2520 | <<locked>> | 80% | 33,344 psi | 82% | 2287 fps | 97.4% |
| Accurate 4064 | 24.1 gr | 80% | 26,208 psi | 65% | 2136 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 34,389 psi | 85% | 2267 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 32,547 psi | 80% | 2283 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 33,779 psi | 83% | 2306 fps | 95.3% |
| Bofors RP3 | <<locked>> | 88% | 32,793 psi | 81% | 2300 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 80% | 31,792 psi | 78% | 2267 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,947 psi | 61% | 1365 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 30,879 psi | 76% | 2264 fps | 98.9% |
| IMR 8208 XBR | <<locked>> | 80% | 34,389 psi | 85% | 2267 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 80% | 29,921 psi | 74% | 2221 fps | 96.3% |
| Lovex S062 | <<locked>> | 84% | 32,198 psi | 79% | 2238 fps | 95.1% |
| Norma 201 | <<locked>> | 82% | 33,707 psi | 83% | 2254 fps | 95.6% |
| Norma 202 | <<locked>> | 80% | 31,662 psi | 78% | 2231 fps | 97.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,179 psi | 62% | 1401 fps | 100% |
| ReloadSwiss RS 60 | 28.5 gr | 88% | 31,981 psi | 79% | 2320 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 82% | 32,213 psi | 79% | 2215 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 29,921 psi | 74% | 2221 fps | 96.3% |
| Shooters World Precision | <<locked>> | 84% | 32,198 psi | 79% | 2238 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 33,591 psi | 83% | 2192 fps | 97.9% |
| SNPE Vectan Tubal 5000 | 23.3 gr | 80% | 27,195 psi | 67% | 2067 fps | 97% |
| Somchem S335 | <<locked>> | 80% | 32,938 psi | 81% | 2198 fps | 98.5% |
| Somchem S355 | <<locked>> | 90% | 34,534 psi | 85% | 2313 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 33,460 psi | 82% | 2201 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 80% | 28,500 psi | 70% | 2169 fps | 99% |
| Vihtavuori N140 | <<locked>> | 80% | 29,762 psi | 73% | 2172 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 88% | 30,603 psi | 75% | 2205 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 33,852 psi | 83% | 2254 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 28,543 psi | 70% | 2156 fps | 96.2% |
| Winchester 748 | <<locked>> | 80% | 32,590 psi | 80% | 2283 fps | 96.2% |
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 31 powders for 6.5 x 70 R loaded with the .263 | 123gr | Prvi Partizan SP. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,428 fps; across all powders the maximum-charge window runs from 1,532 fps to 2,428 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 31 of the 31 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 83–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.263" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. 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. ReloadSwiss RS 60, Accurate 4064, SNPE Vectan Tubal 5000 rank at the top here: for 6.5 x 70 R with the .263 | 123gr | Prvi Partizan SP 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.