Load Specifications
Load data in caliber 6.5 x 58 R with .264 | 110gr | Lehigh Defense Controlled Chaos bullet and 23 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% | 35,331 psi | 87% | 2356 fps | 99% |
| Accurate 2460 | <<locked>> | 82% | 35,462 psi | 87% | 2379 fps | 96.5% |
| Accurate 2495 | <<locked>> | 92% | 35,172 psi | 87% | 2425 fps | 99.3% |
| Accurate 2520 | <<locked>> | 86% | 35,549 psi | 88% | 2418 fps | 96.1% |
| Accurate 4064 | <<locked>> | 94% | 34,896 psi | 86% | 2434 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 88% | 36,651 psi | 90% | 2464 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 36,390 psi | 90% | 2415 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,982 psi | 81% | 1585 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 35,056 psi | 86% | 2444 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 90% | 36,230 psi | 89% | 2444 fps | 96.3% |
| Norma 202 | <<locked>> | 88% | 35,491 psi | 87% | 2398 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,996 psi | 81% | 1621 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 36,201 psi | 89% | 2388 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 84% | 35,143 psi | 87% | 2352 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 36,230 psi | 89% | 2444 fps | 96.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 36,216 psi | 89% | 2329 fps | 96.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 35,041 psi | 86% | 2323 fps | 97.6% |
| Somchem S335 | <<locked>> | 86% | 35,143 psi | 87% | 2329 fps | 97.5% |
| Vihtavuori N130 | <<locked>> | 82% | 36,216 psi | 89% | 2333 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 86% | 35,926 psi | 88% | 2339 fps | 99% |
| Vihtavuori N135 | <<locked>> | 92% | 36,361 psi | 90% | 2431 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 90% | 35,969 psi | 89% | 2388 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 90% | 34,301 psi | 84% | 2369 fps | 96.2% |
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% | 30,937 psi | 76% | 2257 fps | 98% |
| Accurate 2460 | <<locked>> | 80% | 33,257 psi | 82% | 2329 fps | 95.7% |
| Accurate 2495 | 23.4 gr | 80% | 23,424 psi | 58% | 2133 fps | 95.4% |
| Accurate 2520 | <<locked>> | 84% | 32,909 psi | 81% | 2362 fps | 95.1% |
| Accurate 4064 | 25.8 gr | 88% | 29,008 psi | 71% | 2293 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 28,456 psi | 70% | 2277 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 80% | 34,127 psi | 84% | 2365 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,424 psi | 60% | 1414 fps | 100% |
| IMR 3031 | 23.2 gr | 80% | 27,325 psi | 67% | 2247 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 88% | 33,910 psi | 84% | 2395 fps | 95.5% |
| Norma 202 | <<locked>> | 84% | 31,488 psi | 78% | 2310 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,192 psi | 60% | 1444 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 33,982 psi | 84% | 2336 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 31,372 psi | 77% | 2264 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 88% | 33,910 psi | 84% | 2395 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 31,821 psi | 78% | 2231 fps | 95.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 29,211 psi | 72% | 2192 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 29,167 psi | 72% | 2188 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 34,287 psi | 84% | 2293 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 80% | 29,849 psi | 74% | 2205 fps | 97.5% |
| Vihtavuori N135 | <<locked>> | 80% | 24,990 psi | 62% | 2156 fps | 95.9% |
| Vihtavuori N140 | <<locked>> | 84% | 29,762 psi | 73% | 2247 fps | 95% |
| Vihtavuori N540 | <<locked>> | 88% | 32,256 psi | 79% | 2323 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 23 powders for 6.5 x 58 R loaded with the .264 | 110gr | Lehigh Defense Controlled Chaos. Alliant AR-Comp delivers the highest muzzle velocity at 2,464 fps; across all powders the maximum-charge window runs from 1,585 fps to 2,464 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 23 of the 23 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 110.0 gr projectile in 0.264" calls for a 1:9.0 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. IMR 3031, Accurate 4064, Accurate 2495 rank at the top here: for 6.5 x 58 R with the .264 | 110gr | Lehigh Defense Controlled Chaos 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.