Load Specifications
Load data in caliber 6.5 x 58 R with .264 | 140gr | Swift A-Frame bullet and 29 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Bofors RP3 and Vihtavuori N150.
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>> | 84% | 34,432 psi | 85% | 2119 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 34,693 psi | 85% | 2146 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 36,419 psi | 90% | 2175 fps | 97.1% |
| Alliant Reloder-17 | <<locked>> | 92% | 36,448 psi | 90% | 2238 fps | 96.1% |
| Bofors RP3 | <<locked>> | 88% | 35,636 psi | 88% | 2172 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 35,433 psi | 87% | 2182 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,301 psi | 84% | 1411 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 35,940 psi | 89% | 2129 fps | 96.4% |
| IMR 3031 | <<locked>> | 82% | 35,940 psi | 89% | 2178 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 35,839 psi | 88% | 2169 fps | 96% |
| Lovex D073.6 | <<locked>> | 82% | 34,780 psi | 86% | 2139 fps | 98.5% |
| Lovex S062 | <<locked>> | 84% | 34,664 psi | 85% | 2106 fps | 97% |
| Norma 201 | <<locked>> | 82% | 36,492 psi | 90% | 2126 fps | 97.4% |
| Norma 202 | <<locked>> | 82% | 36,230 psi | 89% | 2139 fps | 99.2% |
| Norma 203B | <<locked>> | 86% | 36,695 psi | 90% | 2178 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,577 psi | 85% | 1444 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 36,535 psi | 90% | 2251 fps | 98.6% |
| Rottweil R 902 | <<locked>> | 82% | 34,490 psi | 85% | 2080 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 90% | 35,955 psi | 89% | 2172 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 34,780 psi | 86% | 2139 fps | 98.5% |
| Shooters World Precision | <<locked>> | 84% | 34,664 psi | 85% | 2106 fps | 97% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 35,302 psi | 87% | 2064 fps | 99.6% |
| Somchem S355 | <<locked>> | 88% | 34,896 psi | 86% | 2136 fps | 96.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,390 psi | 90% | 2247 fps | 97.8% |
| Vihtavuori N135 | <<locked>> | 84% | 35,186 psi | 87% | 2119 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 36,405 psi | 90% | 2126 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 90% | 35,520 psi | 87% | 2129 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 84% | 34,925 psi | 86% | 2116 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 34,505 psi | 85% | 2129 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 2495 | <<locked>> | 80% | 30,414 psi | 75% | 2041 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 28,819 psi | 71% | 2021 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 32,285 psi | 80% | 2090 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 90% | 34,243 psi | 84% | 2188 fps | 95.2% |
| Bofors RP3 | 25.2 gr | 84% | 31,546 psi | 78% | 2090 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,285 psi | 77% | 2090 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,440 psi | 63% | 1257 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 33,707 psi | 83% | 2083 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 33,547 psi | 83% | 2133 fps | 99.8% |
| IMR 4895 | <<locked>> | 82% | 33,620 psi | 83% | 2123 fps | 95.2% |
| Lovex D073.6 | <<locked>> | 80% | 32,590 psi | 80% | 2096 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 30,806 psi | 76% | 2028 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 34,229 psi | 84% | 2083 fps | 96.8% |
| Norma 202 | <<locked>> | 80% | 33,953 psi | 84% | 2096 fps | 98.8% |
| Norma 203B | <<locked>> | 84% | 34,432 psi | 85% | 2133 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,367 psi | 62% | 1283 fps | 100% |
| ReloadSwiss RS 60 | 25.5 gr | 82% | 28,311 psi | 70% | 2051 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 32,358 psi | 80% | 2037 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 86% | 31,473 psi | 78% | 2080 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 32,590 psi | 80% | 2096 fps | 98% |
| Shooters World Precision | <<locked>> | 80% | 30,806 psi | 76% | 2028 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,254 psi | 72% | 1946 fps | 98.5% |
| Somchem S355 | <<locked>> | 86% | 32,764 psi | 81% | 2090 fps | 95.4% |
| Somchem S365 | <<locked>> | 94% | 30,197 psi | 74% | 2106 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 31,009 psi | 76% | 2041 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 31,937 psi | 79% | 2041 fps | 98.7% |
| Vihtavuori N150 | 24.6 gr | 84% | 29,225 psi | 72% | 1998 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 30,763 psi | 76% | 2031 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 32,372 psi | 80% | 2087 fps | 95.3% |
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 29 powders for 6.5 x 58 R loaded with the .264 | 140gr | Swift A-Frame. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,251 fps; across all powders the maximum-charge window runs from 1,411 fps to 2,251 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 29 of the 29 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 1:10.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Somchem S365 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, Bofors RP3, Vihtavuori N150 rank at the top here: for 6.5 x 58 R with the .264 | 140gr | Swift A-Frame 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.