Load Specifications
Load data in caliber 6.5 x 58 R with .264 | 124gr | Hammer Hunter bullet and 26 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 Vihtavuori N135.
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>> | 82% | 35,592 psi | 88% | 2234 fps | 99.8% |
| Accurate 2495 | <<locked>> | 90% | 35,839 psi | 88% | 2306 fps | 99.9% |
| Accurate 2520 | <<locked>> | 84% | 36,318 psi | 89% | 2313 fps | 97.9% |
| Accurate 4064 | <<locked>> | 92% | 36,056 psi | 89% | 2333 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 84% | 35,259 psi | 87% | 2306 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 36,201 psi | 89% | 2323 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 84% | 34,272 psi | 84% | 2287 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,141 psi | 82% | 1496 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 35,650 psi | 88% | 2333 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 86% | 34,708 psi | 85% | 2293 fps | 97.5% |
| Norma 201 | <<locked>> | 86% | 36,172 psi | 89% | 2270 fps | 96% |
| Norma 202 | <<locked>> | 86% | 36,390 psi | 90% | 2297 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,199 psi | 82% | 1532 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 34,679 psi | 85% | 2346 fps | 96.3% |
| Rottweil R 901 | <<locked>> | 82% | 35,476 psi | 87% | 2241 fps | 98% |
| Rottweil R 902 | <<locked>> | 88% | 36,448 psi | 90% | 2270 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 86% | 34,708 psi | 85% | 2293 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 36,332 psi | 89% | 2215 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 35,389 psi | 87% | 2215 fps | 98.9% |
| Somchem S335 | <<locked>> | 84% | 35,375 psi | 87% | 2215 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 84% | 36,245 psi | 89% | 2221 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 88% | 35,114 psi | 86% | 2277 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 88% | 36,550 psi | 90% | 2280 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 94% | 35,331 psi | 87% | 2274 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 88% | 35,201 psi | 87% | 2270 fps | 98% |
| Winchester 748 | <<locked>> | 84% | 35,592 psi | 88% | 2313 fps | 96.8% |
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% | 33,286 psi | 82% | 2192 fps | 99.5% |
| Accurate 2495 | <<locked>> | 80% | 25,585 psi | 63% | 2083 fps | 98.1% |
| Accurate 2520 | <<locked>> | 80% | 31,401 psi | 77% | 2211 fps | 96.4% |
| Accurate 4064 | 24.1 gr | 82% | 25,730 psi | 63% | 2096 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 30,719 psi | 76% | 2211 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 34,287 psi | 84% | 2280 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 82% | 32,126 psi | 79% | 2241 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,511 psi | 60% | 1335 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 29,428 psi | 72% | 2195 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 80% | 28,021 psi | 69% | 2142 fps | 95% |
| Norma 201 | <<locked>> | 84% | 33,924 psi | 84% | 2224 fps | 95.3% |
| Norma 202 | <<locked>> | 80% | 29,863 psi | 74% | 2156 fps | 96.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,685 psi | 61% | 1371 fps | 100% |
| ReloadSwiss RS 60 | 28.4 gr | 90% | 32,271 psi | 79% | 2283 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 33,301 psi | 82% | 2195 fps | 97.4% |
| Rottweil R 902 | <<locked>> | 86% | 34,519 psi | 85% | 2231 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 28,021 psi | 69% | 2142 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,155 psi | 79% | 2129 fps | 97.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 25,947 psi | 64% | 2005 fps | 96% |
| Somchem S335 | <<locked>> | 80% | 31,488 psi | 78% | 2136 fps | 97.9% |
| Vihtavuori N133 | <<locked>> | 80% | 32,097 psi | 79% | 2142 fps | 99.2% |
| Vihtavuori N135 | 22.8 gr | 80% | 26,919 psi | 66% | 2100 fps | 98.3% |
| Vihtavuori N140 | <<locked>> | 80% | 28,108 psi | 69% | 2100 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 92% | 33,098 psi | 82% | 2228 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 26,948 psi | 66% | 2083 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 30,966 psi | 76% | 2211 fps | 95% |
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 26 powders for 6.5 x 58 R loaded with the .264 | 124gr | Hammer Hunter. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,346 fps; across all powders the maximum-charge window runs from 1,496 fps to 2,346 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 26 of the 26 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 82–90 %, leaving at least 10 % headroom. The 124.0 gr projectile in 0.264" calls for a 1:8.0 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, Vihtavuori N135 rank at the top here: for 6.5 x 58 R with the .264 | 124gr | Hammer 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.