Load Specifications
Load data in caliber 6.5 x 58 R with .264 | 155gr | Sierra HPBT LR MatchKing bullet and 34 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Somchem S365.
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% | 35,505 psi | 87% | 2001 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 35,897 psi | 88% | 2034 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 86% | 36,579 psi | 90% | 2008 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 35,201 psi | 87% | 2021 fps | 97.5% |
| Alliant Reloder-15 | <<locked>> | 84% | 36,172 psi | 89% | 2034 fps | 96.2% |
| Alliant Reloder-17 | <<locked>> | 90% | 34,795 psi | 86% | 2077 fps | 96.6% |
| Bofors RP3 | <<locked>> | 86% | 34,693 psi | 85% | 2028 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 36,376 psi | 90% | 2057 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 36,318 psi | 89% | 2070 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,548 psi | 85% | 1316 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 36,738 psi | 90% | 2054 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 36,201 psi | 89% | 1995 fps | 96.2% |
| IMR 4895 | <<locked>> | 82% | 34,519 psi | 85% | 2014 fps | 96.4% |
| Lovex D073.6 | <<locked>> | 82% | 35,969 psi | 89% | 2031 fps | 99.3% |
| Lovex S062 | <<locked>> | 84% | 35,534 psi | 88% | 1998 fps | 98% |
| Norma 203B | <<locked>> | 84% | 35,476 psi | 87% | 2024 fps | 96.7% |
| Ramshot Big Game | <<locked>> | 84% | 34,954 psi | 86% | 2031 fps | 96.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,882 psi | 86% | 1348 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 35,157 psi | 87% | 2093 fps | 99% |
| Rottweil R 902 | <<locked>> | 82% | 35,491 psi | 87% | 1975 fps | 97.9% |
| Rottweil R 903 | <<locked>> | 88% | 34,592 psi | 85% | 2018 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 35,969 psi | 89% | 2031 fps | 99.3% |
| Shooters World Precision | <<locked>> | 84% | 35,534 psi | 88% | 1998 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 36,347 psi | 90% | 2064 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 36,274 psi | 89% | 2018 fps | 96.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 36,100 psi | 89% | 1952 fps | 99.9% |
| Somchem S355 | <<locked>> | 88% | 35,708 psi | 88% | 2024 fps | 97.2% |
| Somchem S365 | <<locked>> | 98% | 34,983 psi | 86% | 2090 fps | 98.2% |
| Vihtavuori N135 | <<locked>> | 84% | 36,376 psi | 90% | 2005 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 35,346 psi | 87% | 1975 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 90% | 36,579 psi | 90% | 2021 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 84% | 36,056 psi | 89% | 2005 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 35,085 psi | 86% | 1998 fps | 96.6% |
| Winchester StaBALL Match | <<locked>> | 82% | 35,317 psi | 87% | 2021 fps | 97.2% |
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 2495 | <<locked>> | 80% | 31,488 psi | 78% | 1932 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 29,820 psi | 73% | 1919 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 84% | 34,577 psi | 85% | 1969 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 29,283 psi | 72% | 1903 fps | 95.5% |
| Alliant Reloder-15 | <<locked>> | 82% | 33,808 psi | 83% | 1988 fps | 95.4% |
| Alliant Reloder-17 | 25.7 gr | 88% | 32,938 psi | 81% | 2037 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 28,413 psi | 70% | 1900 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 32,198 psi | 79% | 1972 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,807 psi | 78% | 1978 fps | 96.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,541 psi | 63% | 1171 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 34,577 psi | 85% | 2018 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 33,808 psi | 83% | 1949 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 32,242 psi | 79% | 1969 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 80% | 33,547 psi | 83% | 1988 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 31,357 psi | 77% | 1916 fps | 96.7% |
| Norma 203B | <<locked>> | 80% | 30,951 psi | 76% | 1936 fps | 95% |
| Ramshot Big Game | <<locked>> | 82% | 32,735 psi | 81% | 1988 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,527 psi | 63% | 1198 fps | 100% |
| ReloadSwiss RS 60 | 23.3 gr | 80% | 27,093 psi | 67% | 1903 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 33,185 psi | 82% | 1929 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 82% | 28,689 psi | 71% | 1896 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,547 psi | 83% | 1988 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 31,357 psi | 77% | 1916 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 31,923 psi | 79% | 1975 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,330 psi | 85% | 1982 fps | 96.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,936 psi | 74% | 1841 fps | 99.2% |
| Somchem S355 | <<locked>> | 82% | 29,791 psi | 73% | 1906 fps | 95.2% |
| Somchem S365 | 24.9 gr | 90% | 27,514 psi | 68% | 1923 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 31,850 psi | 78% | 1929 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 32,953 psi | 81% | 1932 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 80% | 26,513 psi | 65% | 1818 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 31,531 psi | 78% | 1923 fps | 98.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 32,967 psi | 81% | 1955 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 33,373 psi | 82% | 1982 fps | 96.6% |
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 34 powders for 6.5 x 58 R loaded with the .264 | 155gr | Sierra HPBT LR MatchKing. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,093 fps; across all powders the maximum-charge window runs from 1,316 fps to 2,093 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 34 of the 34 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (280 MPa), the top charges use 85–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.264" calls for a 1:8.5 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, Alliant Reloder-17, Somchem S365 rank at the top here: for 6.5 x 58 R with the .264 | 155gr | Sierra HPBT LR MatchKing 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.