Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 156gr | Norma ORYX bullet and 45 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Alliant Reloder-16 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 3100ᴾ | <<locked>> | 100% | 39,798 psi | 84% | 2260 fps | 96.7% |
| Accurate 4064 | <<locked>> | 82% | 41,220 psi | 87% | 2221 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 42,554 psi | 90% | 2320 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 82% | 40,248 psi | 85% | 2195 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 42,482 psi | 90% | 2260 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 41,989 psi | 89% | 2326 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 88% | 41,945 psi | 89% | 2349 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,305 psi | 81% | 2287 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,453 psi | 90% | 2425 fps | 98.6% |
| Bofors RP3 | <<locked>> | 84% | 42,148 psi | 89% | 2267 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 82% | 40,364 psi | 86% | 2224 fps | 97.9% |
| Hodgdon H414 | <<locked>> | 90% | 42,424 psi | 90% | 2313 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 41,278 psi | 88% | 2270 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,578 psi | 75% | 1440 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 42,322 psi | 90% | 2224 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 41,974 psi | 89% | 2221 fps | 95.9% |
| IMR 4831 | <<locked>> | 92% | 40,930 psi | 87% | 2277 fps | 98.6% |
| Lovex S062 | <<locked>> | 82% | 42,308 psi | 90% | 2228 fps | 99.9% |
| Lovex S065 | <<locked>> | 88% | 41,379 psi | 88% | 2221 fps | 97.3% |
| Lovex S070 | <<locked>> | 90% | 41,916 psi | 89% | 2251 fps | 96.3% |
| Norma 203B | <<locked>> | 82% | 42,279 psi | 90% | 2264 fps | 99.5% |
| Norma URP | <<locked>> | 92% | 42,337 psi | 90% | 2313 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 82% | 41,684 psi | 88% | 2277 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 92% | 41,553 psi | 88% | 2306 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,926 psi | 76% | 1473 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,944 psi | 87% | 2215 fps | 96.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 41,727 psi | 89% | 2349 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 42,163 psi | 89% | 2336 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,337 psi | 90% | 2352 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 86% | 42,424 psi | 90% | 2264 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,379 psi | 88% | 2221 fps | 97.3% |
| Shooters World Precision | <<locked>> | 82% | 42,308 psi | 90% | 2228 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 90% | 41,916 psi | 89% | 2251 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 40,814 psi | 87% | 2267 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 42,163 psi | 89% | 2152 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 40,973 psi | 87% | 2178 fps | 95.8% |
| Somchem S355 | <<locked>> | 84% | 40,364 psi | 86% | 2218 fps | 99.5% |
| Somchem S365 | <<locked>> | 94% | 40,408 psi | 86% | 2316 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 41,234 psi | 87% | 2208 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 41,814 psi | 89% | 2267 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 82% | 42,511 psi | 90% | 2221 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 41,017 psi | 87% | 2270 fps | 98.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,872 psi | 89% | 2352 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 41,452 psi | 88% | 2247 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,287 psi | 73% | 2297 fps | 99.3% |
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 3100 | <<locked>> | 96% | 34,621 psi | 73% | 2165 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 38,711 psi | 82% | 2178 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 30,342 psi | 64% | 2083 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 37,884 psi | 80% | 2152 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,536 psi | 80% | 2175 fps | 99.3% |
| Alliant Reloder-16 | 28.9 gr | 82% | 31,024 psi | 66% | 2093 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,358 psi | 69% | 2156 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 88% | 26,629 psi | 56% | 2014 fps | 95.1% |
| Alliant Reloder-26 | 35.8 gr | 92% | 32,387 psi | 69% | 2211 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 37,159 psi | 79% | 2178 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 80% | 37,942 psi | 80% | 2182 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 88% | 39,900 psi | 85% | 2267 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 26,701 psi | 57% | 1965 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,658 psi | 57% | 1286 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,726 psi | 84% | 2178 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 39,566 psi | 84% | 2178 fps | 95.2% |
| IMR 4831 | <<locked>> | 82% | 29,602 psi | 63% | 2051 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 39,784 psi | 84% | 2185 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 34,563 psi | 73% | 2093 fps | 95.3% |
| Lovex S070 | <<locked>> | 88% | 39,479 psi | 84% | 2208 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 39,436 psi | 84% | 2215 fps | 99.1% |
| Norma URP | <<locked>> | 82% | 30,719 psi | 65% | 2083 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 38,870 psi | 82% | 2228 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 36,564 psi | 78% | 2211 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,701 psi | 57% | 1312 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,261 psi | 81% | 2165 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,418 psi | 73% | 2208 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 32,053 psi | 68% | 2139 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 34,490 psi | 73% | 2195 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 34,780 psi | 74% | 2129 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 34,563 psi | 73% | 2093 fps | 95.3% |
| Shooters World Precision | <<locked>> | 80% | 39,784 psi | 84% | 2185 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 39,479 psi | 84% | 2208 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,781 psi | 76% | 2175 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,521 psi | 80% | 2080 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 38,450 psi | 82% | 2136 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 35,694 psi | 76% | 2133 fps | 98.7% |
| Somchem S365 | 28.8 gr | 80% | 25,976 psi | 55% | 1998 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 80% | 33,852 psi | 72% | 2080 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 82% | 32,314 psi | 69% | 2087 fps | 95.9% |
| Vihtavuori N540 | <<locked>> | 80% | 40,030 psi | 85% | 2182 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 31,589 psi | 67% | 2087 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 88% | 28,413 psi | 60% | 2080 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,907 psi | 63% | 2018 fps | 97.1% |
| Winchester StaBALL HD | <<locked>> | 92% | 26,687 psi | 57% | 2080 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 45 powders for 6.5 x 52 R K&S loaded with the .264 | 156gr | Norma ORYX. Alliant Reloder-26 delivers the highest muzzle velocity at 2,425 fps; across all powders the maximum-charge window runs from 1,440 fps to 2,425 fps. Accurate 3100 gives the best case fill at 100 %, and 45 of the 45 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 73–90 %, leaving at least 10 % headroom. The 156.0 gr projectile in 0.264" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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. Alliant Reloder-26, Alliant Reloder-16, Somchem S365 rank at the top here: for 6.5 x 52 R K&S with the .264 | 156gr | Norma ORYX 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.