Load Specifications
Load data in caliber 6.5 x 58 R with .264 | 140gr | H&N RN H bullet and 36 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Somchem S365 and Somchem S355.
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 2495 | <<locked>> | 86% | 36,303 psi | 89% | 2192 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 36,579 psi | 90% | 2224 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 34,766 psi | 86% | 2182 fps | 97.2% |
| Alliant Reloder-17 | <<locked>> | 92% | 36,651 psi | 90% | 2290 fps | 97% |
| Bofors RP3 | <<locked>> | 88% | 36,216 psi | 89% | 2228 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 35,650 psi | 88% | 2215 fps | 96.7% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 35,897 psi | 88% | 2234 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,982 psi | 84% | 1440 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 36,506 psi | 90% | 2185 fps | 97.1% |
| IMR 3031 | <<locked>> | 82% | 36,390 psi | 90% | 2224 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 35,476 psi | 87% | 2152 fps | 95.8% |
| IMR 4895 | <<locked>> | 84% | 36,158 psi | 89% | 2218 fps | 96.7% |
| Lovex D073.6 | <<locked>> | 82% | 34,882 psi | 86% | 2182 fps | 98.9% |
| Lovex S062 | <<locked>> | 84% | 34,867 psi | 86% | 2156 fps | 97.6% |
| Norma 201 | <<locked>> | 82% | 36,216 psi | 89% | 2169 fps | 97.9% |
| Norma 202 | <<locked>> | 82% | 36,332 psi | 89% | 2182 fps | 99.5% |
| Norma 203B | <<locked>> | 84% | 34,621 psi | 85% | 2182 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 86% | 36,709 psi | 90% | 2241 fps | 96.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,084 psi | 84% | 1473 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 36,347 psi | 90% | 2267 fps | 96% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 34,432 psi | 85% | 2254 fps | 98.6% |
| Rottweil R 902 | <<locked>> | 84% | 36,477 psi | 90% | 2165 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 90% | 36,158 psi | 89% | 2218 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 34,882 psi | 86% | 2182 fps | 98.9% |
| Shooters World Precision | <<locked>> | 84% | 34,867 psi | 86% | 2156 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 35,824 psi | 88% | 2228 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 35,897 psi | 88% | 2182 fps | 96.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 35,447 psi | 87% | 2110 fps | 99.8% |
| Somchem S355 | <<locked>> | 88% | 34,896 psi | 86% | 2178 fps | 96.7% |
| Somchem S365 | <<locked>> | 98% | 34,563 psi | 85% | 2257 fps | 97.9% |
| Vihtavuori N135 | <<locked>> | 84% | 35,404 psi | 87% | 2162 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 34,563 psi | 85% | 2133 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 90% | 35,882 psi | 88% | 2178 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 84% | 35,360 psi | 87% | 2165 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 34,548 psi | 85% | 2156 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 82% | 34,998 psi | 86% | 2185 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 2495 | <<locked>> | 80% | 29,588 psi | 73% | 2067 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 28,079 psi | 69% | 2051 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 30,197 psi | 74% | 2087 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 88% | 32,111 psi | 79% | 2188 fps | 95.1% |
| Bofors RP3 | <<locked>> | 82% | 29,051 psi | 72% | 2077 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 31,459 psi | 77% | 2126 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,082 psi | 77% | 2129 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,208 psi | 62% | 1286 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,939 psi | 84% | 2133 fps | 96.3% |
| IMR 3031 | <<locked>> | 80% | 34,026 psi | 84% | 2182 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 33,272 psi | 82% | 2106 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 31,459 psi | 77% | 2119 fps | 95% |
| Lovex D073.6 | <<locked>> | 80% | 32,648 psi | 80% | 2139 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 30,327 psi | 75% | 2060 fps | 96.1% |
| Norma 201 | <<locked>> | 80% | 33,982 psi | 84% | 2123 fps | 97.3% |
| Norma 202 | <<locked>> | 80% | 34,084 psi | 84% | 2139 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 32,155 psi | 79% | 2129 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 84% | 34,214 psi | 84% | 2188 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,019 psi | 62% | 1312 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 34,069 psi | 84% | 2221 fps | 95.2% |
| ReloadSwiss RS 60 | 27.3 gr | 82% | 28,079 psi | 69% | 2093 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 32,097 psi | 79% | 2080 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 86% | 31,328 psi | 77% | 2119 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,648 psi | 80% | 2139 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 30,327 psi | 75% | 2060 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 33,373 psi | 82% | 2175 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 33,388 psi | 82% | 2133 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,124 psi | 72% | 1985 fps | 98.8% |
| Somchem S355 | 26.1 gr | 84% | 30,719 psi | 76% | 2090 fps | 95.2% |
| Somchem S365 | 29.1 gr | 92% | 28,413 psi | 70% | 2110 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 30,922 psi | 76% | 2077 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 32,082 psi | 79% | 2083 fps | 99% |
| Vihtavuori N150 | <<locked>> | 82% | 27,369 psi | 67% | 1998 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 30,893 psi | 76% | 2073 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 32,576 psi | 80% | 2113 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 32,518 psi | 80% | 2133 fps | 96% |
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 36 powders for 6.5 x 58 R loaded with the .264 | 140gr | H&N RN H. Alliant Reloder-17 delivers the highest muzzle velocity at 2,290 fps; across all powders the maximum-charge window runs from 1,440 fps to 2,290 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 36 of the 36 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 84–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:12.5 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. ReloadSwiss RS 60, Somchem S365, Somchem S355 rank at the top here: for 6.5 x 58 R with the .264 | 140gr | H&N RN H 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.