Load Specifications
Load data in caliber 6.5 x 58 R with .264 | 123gr | Fox Classic Hunter bullet and 22 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Accurate 4064 and Accurate 2495.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 35,636 psi | 88% | 2221 fps | 99.6% |
| Accurate 2460 | <<locked>> | 82% | 35,723 psi | 88% | 2247 fps | 97.6% |
| Accurate 2495 | <<locked>> | 92% | 35,172 psi | 87% | 2283 fps | 99.7% |
| Accurate 2520 | <<locked>> | 86% | 35,868 psi | 88% | 2287 fps | 97.3% |
| Accurate 4064 | <<locked>> | 94% | 35,462 psi | 87% | 2306 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 86% | 34,969 psi | 86% | 2287 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,982 psi | 81% | 1476 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 35,447 psi | 87% | 2313 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 82% | 35,795 psi | 88% | 2251 fps | 96.3% |
| Lovex D073.6 | <<locked>> | 88% | 34,214 psi | 84% | 2267 fps | 96.8% |
| Norma 202 | <<locked>> | 88% | 36,318 psi | 89% | 2280 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,011 psi | 81% | 1512 fps | 100% |
| Rottweil R 901 | <<locked>> | 84% | 35,157 psi | 87% | 2218 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 88% | 34,214 psi | 84% | 2267 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 36,724 psi | 90% | 2201 fps | 97.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 35,476 psi | 87% | 2198 fps | 98.6% |
| Somchem S335 | <<locked>> | 86% | 35,679 psi | 88% | 2205 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 86% | 36,477 psi | 90% | 2211 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 90% | 34,418 psi | 85% | 2251 fps | 99.6% |
| Vihtavuori N140 | <<locked>> | 90% | 36,637 psi | 90% | 2264 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 90% | 34,969 psi | 86% | 2251 fps | 97.4% |
| Winchester 748 | <<locked>> | 86% | 35,331 psi | 87% | 2287 fps | 96% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 31,285 psi | 77% | 2136 fps | 98.9% |
| Accurate 2460 | <<locked>> | 80% | 33,359 psi | 82% | 2198 fps | 96.9% |
| Accurate 2495 | 22.3 gr | 80% | 23,438 psi | 58% | 2014 fps | 96.7% |
| Accurate 2520 | <<locked>> | 82% | 31,140 psi | 77% | 2188 fps | 95.7% |
| Accurate 4064 | 24 gr | 86% | 27,340 psi | 67% | 2126 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 28,572 psi | 70% | 2149 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,352 psi | 60% | 1319 fps | 100% |
| IMR 3031 | 22 gr | 80% | 27,369 psi | 67% | 2123 fps | 96.9% |
| Lovex D073.5 | <<locked>> | 80% | 33,040 psi | 81% | 2192 fps | 95.4% |
| Lovex D073.6 | <<locked>> | 84% | 29,675 psi | 73% | 2169 fps | 95.1% |
| Norma 202 | <<locked>> | 80% | 27,789 psi | 68% | 2090 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,105 psi | 59% | 1345 fps | 100% |
| Rottweil R 901 | <<locked>> | 80% | 31,038 psi | 76% | 2129 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 29,675 psi | 73% | 2169 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,052 psi | 74% | 2064 fps | 95.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 25,991 psi | 64% | 1988 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 29,472 psi | 73% | 2073 fps | 96.7% |
| Vihtavuori N133 | <<locked>> | 80% | 29,878 psi | 74% | 2077 fps | 98.4% |
| Vihtavuori N135 | <<locked>> | 80% | 24,889 psi | 61% | 2031 fps | 97% |
| Vihtavuori N140 | <<locked>> | 82% | 28,181 psi | 69% | 2083 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 84% | 28,631 psi | 71% | 2110 fps | 95.1% |
| Winchester 748 | <<locked>> | 84% | 33,054 psi | 81% | 2238 fps | 95.1% |
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 22 powders for 6.5 x 58 R loaded with the .264 | 123gr | Fox Classic Hunter. IMR 3031 delivers the highest muzzle velocity at 2,313 fps; across all powders the maximum-charge window runs from 1,476 fps to 2,313 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 22 of the 22 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 81–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.264" calls for a 1:8.5 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. IMR 3031, Accurate 4064, Accurate 2495 rank at the top here: for 6.5 x 58 R with the .264 | 123gr | Fox Classic Hunter 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.