Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 160gr | Woodleigh PP SN bullet and 48 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% | 39,204 psi | 83% | 2211 fps | 96.6% |
| Accurate 4064 | <<locked>> | 82% | 41,002 psi | 87% | 2178 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 41,974 psi | 89% | 2270 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 82% | 40,103 psi | 85% | 2156 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 42,032 psi | 89% | 2215 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 82% | 42,453 psi | 90% | 2224 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 92% | 41,771 psi | 89% | 2280 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 88% | 41,481 psi | 88% | 2300 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,029 psi | 81% | 2244 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,134 psi | 89% | 2379 fps | 98.7% |
| Bofors RP3 | <<locked>> | 84% | 41,785 psi | 89% | 2221 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 82% | 40,001 psi | 85% | 2178 fps | 97.9% |
| Hodgdon H414 | <<locked>> | 90% | 42,322 psi | 90% | 2270 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 41,104 psi | 87% | 2228 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,360 psi | 75% | 1407 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 42,134 psi | 89% | 2182 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 42,003 psi | 89% | 2185 fps | 96% |
| IMR 4831 | <<locked>> | 92% | 40,379 psi | 86% | 2228 fps | 98.6% |
| Lovex S062 | <<locked>> | 82% | 41,785 psi | 89% | 2178 fps | 99.9% |
| Lovex S065 | <<locked>> | 88% | 41,452 psi | 88% | 2185 fps | 97.4% |
| Lovex S070 | <<locked>> | 90% | 41,713 psi | 88% | 2208 fps | 96.4% |
| Norma 203B | <<locked>> | 82% | 41,800 psi | 89% | 2215 fps | 99.5% |
| Norma MRPᴾ | <<locked>> | 100% | 42,380 psi | 90% | 2343 fps | 96.1% |
| Norma URP | <<locked>> | 92% | 42,177 psi | 89% | 2270 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 82% | 41,394 psi | 88% | 2231 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 92% | 41,162 psi | 87% | 2260 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,129 psi | 77% | 1444 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,654 psi | 86% | 2169 fps | 96.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 41,539 psi | 88% | 2303 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 41,785 psi | 89% | 2290 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 41,684 psi | 88% | 2303 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 86% | 42,032 psi | 89% | 2218 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,452 psi | 88% | 2185 fps | 97.4% |
| Shooters World Precision | <<locked>> | 82% | 41,785 psi | 89% | 2178 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 90% | 41,713 psi | 88% | 2208 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 40,524 psi | 86% | 2224 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 42,032 psi | 89% | 2113 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 40,770 psi | 86% | 2136 fps | 95.8% |
| Somchem S355 | <<locked>> | 84% | 40,292 psi | 85% | 2178 fps | 99.5% |
| Somchem S365 | <<locked>> | 94% | 40,306 psi | 86% | 2277 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 40,886 psi | 87% | 2165 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 41,234 psi | 87% | 2221 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 82% | 42,090 psi | 89% | 2175 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 40,538 psi | 86% | 2224 fps | 98.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,481 psi | 88% | 2310 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 41,118 psi | 87% | 2205 fps | 99.7% |
| Winchester 760 | <<locked>> | 90% | 42,322 psi | 90% | 2270 fps | 96.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,910 psi | 72% | 2251 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% | 34,200 psi | 73% | 2123 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 38,493 psi | 82% | 2139 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 29,921 psi | 63% | 2041 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 37,652 psi | 80% | 2110 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,347 psi | 79% | 2133 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,885 psi | 85% | 2182 fps | 98.9% |
| Alliant Reloder-16 | 28.1 gr | 82% | 30,908 psi | 66% | 2054 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,024 psi | 68% | 2110 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 88% | 26,629 psi | 56% | 1982 fps | 95.3% |
| Alliant Reloder-26 | 34.8 gr | 92% | 32,169 psi | 68% | 2172 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 36,680 psi | 78% | 2133 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 80% | 37,507 psi | 80% | 2136 fps | 97.3% |
| Hodgdon H414 | <<locked>> | 88% | 39,363 psi | 84% | 2218 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 26,498 psi | 56% | 1926 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,571 psi | 56% | 1257 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,537 psi | 84% | 2136 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 39,508 psi | 84% | 2139 fps | 95.3% |
| IMR 4831 | <<locked>> | 82% | 29,211 psi | 62% | 2008 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 39,218 psi | 83% | 2136 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 34,447 psi | 73% | 2054 fps | 95.4% |
| Lovex S070 | <<locked>> | 88% | 39,175 psi | 83% | 2162 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 39,262 psi | 83% | 2172 fps | 99.1% |
| Norma MRP | <<locked>> | 98% | 39,450 psi | 84% | 2290 fps | 95.1% |
| Norma URP | <<locked>> | 82% | 30,589 psi | 65% | 2044 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 38,537 psi | 82% | 2182 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 36,114 psi | 77% | 2165 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,992 psi | 57% | 1289 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 37,869 psi | 80% | 2119 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,084 psi | 72% | 2165 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 31,807 psi | 67% | 2100 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 34,360 psi | 73% | 2156 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 34,577 psi | 73% | 2087 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 82% | 34,447 psi | 73% | 2054 fps | 95.4% |
| Shooters World Precision | <<locked>> | 80% | 39,218 psi | 83% | 2136 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 39,175 psi | 83% | 2162 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,389 psi | 75% | 2129 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,231 psi | 79% | 2041 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 38,159 psi | 81% | 2093 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 35,476 psi | 75% | 2093 fps | 98.8% |
| Somchem S365 | 28 gr | 80% | 25,817 psi | 55% | 1962 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 80% | 33,707 psi | 72% | 2041 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 29,965 psi | 64% | 2001 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 39,566 psi | 84% | 2136 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 31,227 psi | 66% | 2044 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 88% | 28,152 psi | 60% | 2041 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,965 psi | 64% | 1985 fps | 97.2% |
| Winchester 760 | <<locked>> | 88% | 39,726 psi | 84% | 2224 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 92% | 26,455 psi | 56% | 2041 fps | 95.5% |
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 48 powders for 6.5 x 52 R K&S loaded with the .264 | 160gr | Woodleigh PP SN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,379 fps; across all powders the maximum-charge window runs from 1,407 fps to 2,379 fps. Accurate 3100 gives the best case fill at 100 %, and 48 of the 48 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.264" calls for a 1:9.5 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 | 160gr | Woodleigh PP SN 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.