Load Specifications
Load data in caliber 6.5 x 58 R with .264 | 120gr | Barnes TAC-X bullet and 24 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Lovex D073.6, Shooters World Match Rifle and Accurate 4064.
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% | 36,172 psi | 89% | 2277 fps | 99.6% |
| Accurate 2460 | <<locked>> | 82% | 36,463 psi | 90% | 2306 fps | 97.8% |
| Accurate 2495 | <<locked>> | 92% | 36,289 psi | 89% | 2346 fps | 99.8% |
| Accurate 2520 | <<locked>> | 84% | 34,447 psi | 85% | 2303 fps | 96.9% |
| Accurate 4064 | <<locked>> | 94% | 36,477 psi | 90% | 2369 fps | 98.5% |
| Alliant AR-Comp | <<locked>> | 86% | 35,795 psi | 88% | 2346 fps | 100% |
| Hodgdon Benchmark | <<locked>> | 82% | 36,056 psi | 89% | 2247 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,083 psi | 81% | 1516 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 36,216 psi | 89% | 2372 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 82% | 36,405 psi | 90% | 2306 fps | 96.5% |
| Lovex D073.6 | <<locked>> | 88% | 35,186 psi | 87% | 2329 fps | 97.1% |
| Norma 202 | <<locked>> | 86% | 34,650 psi | 85% | 2290 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,098 psi | 82% | 1552 fps | 100% |
| Rottweil R 901 | <<locked>> | 84% | 36,056 psi | 89% | 2280 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 35,186 psi | 87% | 2329 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 35,085 psi | 86% | 2215 fps | 97.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 36,100 psi | 89% | 2254 fps | 98.7% |
| Somchem S335 | <<locked>> | 86% | 36,390 psi | 90% | 2260 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 84% | 34,940 psi | 86% | 2224 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 90% | 35,230 psi | 87% | 2310 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 88% | 34,809 psi | 86% | 2274 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 96% | 35,998 psi | 89% | 2310 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 90% | 35,810 psi | 88% | 2310 fps | 97.7% |
| Winchester 748 | <<locked>> | 86% | 36,245 psi | 89% | 2352 fps | 96.4% |
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% | 31,937 psi | 79% | 2192 fps | 99% |
| Accurate 2460 | <<locked>> | 80% | 34,127 psi | 84% | 2257 fps | 97.1% |
| Accurate 2495 | <<locked>> | 80% | 23,960 psi | 59% | 2067 fps | 96.9% |
| Accurate 2520 | <<locked>> | 80% | 29,704 psi | 73% | 2198 fps | 95.1% |
| Accurate 4064 | 24.4 gr | 84% | 26,208 psi | 65% | 2136 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 29,443 psi | 73% | 2211 fps | 99.9% |
| Hodgdon Benchmark | <<locked>> | 80% | 33,837 psi | 83% | 2201 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,352 psi | 60% | 1352 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 27,905 psi | 69% | 2178 fps | 97.1% |
| Lovex D073.5 | <<locked>> | 80% | 34,069 psi | 84% | 2257 fps | 95.8% |
| Lovex D073.6 | 25.7 gr | 84% | 30,705 psi | 76% | 2231 fps | 95.5% |
| Norma 202 | <<locked>> | 80% | 28,297 psi | 70% | 2142 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,511 psi | 60% | 1388 fps | 100% |
| Rottweil R 901 | <<locked>> | 80% | 31,647 psi | 78% | 2185 fps | 96.3% |
| Shooters World Match Rifle | 25.7 gr | 84% | 30,705 psi | 76% | 2231 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,632 psi | 75% | 2119 fps | 96.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 26,440 psi | 65% | 2037 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 29,965 psi | 74% | 2126 fps | 96.8% |
| Vihtavuori N133 | <<locked>> | 80% | 30,487 psi | 75% | 2133 fps | 98.5% |
| Vihtavuori N135 | <<locked>> | 80% | 25,454 psi | 63% | 2087 fps | 97.3% |
| Vihtavuori N140 | <<locked>> | 80% | 27,050 psi | 67% | 2093 fps | 95% |
| Vihtavuori N150 | <<locked>> | 94% | 33,692 psi | 83% | 2264 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 84% | 29,486 psi | 73% | 2169 fps | 95.5% |
| Winchester 748 | <<locked>> | 84% | 33,939 psi | 84% | 2303 fps | 95.5% |
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 24 powders for 6.5 x 58 R loaded with the .264 | 120gr | Barnes TAC-X. IMR 3031 delivers the highest muzzle velocity at 2,372 fps; across all powders the maximum-charge window runs from 1,516 fps to 2,372 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 24 of the 24 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 120.0 gr projectile in 0.264" calls for a 1:9.5 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. Lovex D073.6, Shooters World Match Rifle, Accurate 4064 rank at the top here: for 6.5 x 58 R with the .264 | 120gr | Barnes TAC-X 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.