Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 144gr | Lapua MaxRange Target OTM bullet and 51 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 ReloadSwiss RS 70.
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% | 42,351 psi | 90% | 2297 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 42,569 psi | 90% | 2336 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 40,727 psi | 86% | 2375 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 86% | 42,134 psi | 89% | 2310 fps | 98.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,264 psi | 90% | 2428 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 41,495 psi | 88% | 2329 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 84% | 42,047 psi | 89% | 2343 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 94% | 41,220 psi | 87% | 2388 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 90% | 41,031 psi | 87% | 2415 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,925 psi | 74% | 2293 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 38,247 psi | 81% | 2415 fps | 96.1% |
| Bofors RP3 | <<locked>> | 86% | 41,031 psi | 87% | 2336 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 86% | 42,018 psi | 89% | 2336 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 42,554 psi | 90% | 2375 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 42,540 psi | 90% | 2385 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,172 psi | 75% | 1486 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,540 psi | 90% | 2323 fps | 99.2% |
| IMR 4064 | <<locked>> | 84% | 41,597 psi | 88% | 2293 fps | 98.3% |
| IMR 4831 | <<locked>> | 96% | 41,916 psi | 89% | 2379 fps | 97.9% |
| IMR 4895 | <<locked>> | 82% | 40,422 psi | 86% | 2326 fps | 98.6% |
| Lovex D073.6 | <<locked>> | 82% | 42,308 psi | 90% | 2329 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 41,481 psi | 88% | 2300 fps | 99.5% |
| Lovex S065 | <<locked>> | 90% | 40,611 psi | 86% | 2287 fps | 96% |
| Norma 203B | <<locked>> | 84% | 41,350 psi | 88% | 2333 fps | 98.7% |
| Norma URP | <<locked>> | 94% | 41,220 psi | 87% | 2375 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 84% | 40,683 psi | 86% | 2343 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,462 psi | 75% | 1522 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 40,930 psi | 87% | 2382 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 40,814 psi | 87% | 2418 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 40,509 psi | 86% | 2392 fps | 97.2% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,205 psi | 87% | 2405 fps | 96.5% |
| Rottweil R 902 | <<locked>> | 82% | 40,727 psi | 86% | 2267 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 88% | 41,278 psi | 88% | 2333 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,611 psi | 86% | 2287 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 82% | 42,308 psi | 90% | 2329 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 41,481 psi | 88% | 2300 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,366 psi | 90% | 2379 fps | 98.8% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 42,148 psi | 89% | 2323 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 41,553 psi | 88% | 2231 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 42,003 psi | 89% | 2333 fps | 99.1% |
| Somchem S365 | <<locked>> | 98% | 41,800 psi | 89% | 2428 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 84% | 42,424 psi | 90% | 2290 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 40,611 psi | 86% | 2257 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 40,350 psi | 86% | 2280 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 92% | 40,422 psi | 86% | 2326 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 84% | 41,727 psi | 89% | 2297 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 42,467 psi | 90% | 2382 fps | 97.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,376 psi | 79% | 2359 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 40,814 psi | 87% | 2313 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,024 psi | 66% | 2267 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 82% | 41,321 psi | 88% | 2326 fps | 99.1% |
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% | 37,159 psi | 79% | 2215 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,172 psi | 75% | 2205 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 33,272 psi | 71% | 2228 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 34,983 psi | 74% | 2172 fps | 96.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,014 psi | 79% | 2323 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,374 psi | 73% | 2195 fps | 97.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,767 psi | 78% | 2244 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,360 psi | 73% | 2244 fps | 95.5% |
| Alliant Reloder-17 | 29.8 gr | 80% | 29,457 psi | 62% | 2152 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,980 psi | 66% | 2198 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 35,926 psi | 76% | 2362 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 33,823 psi | 72% | 2198 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 80% | 34,809 psi | 74% | 2198 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,472 psi | 63% | 2106 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,188 psi | 79% | 2287 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,179 psi | 56% | 1325 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,943 psi | 85% | 2277 fps | 98.8% |
| IMR 4064 | <<locked>> | 80% | 36,666 psi | 78% | 2201 fps | 97.2% |
| IMR 4831 | <<locked>> | 88% | 32,474 psi | 69% | 2195 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 37,637 psi | 80% | 2270 fps | 98% |
| Lovex D073.6 | <<locked>> | 80% | 39,682 psi | 84% | 2287 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 36,593 psi | 78% | 2211 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 38,189 psi | 81% | 2241 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 36,158 psi | 77% | 2234 fps | 97.6% |
| Norma URP | <<locked>> | 88% | 34,142 psi | 72% | 2238 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 35,636 psi | 76% | 2247 fps | 97.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,513 psi | 56% | 1362 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,319 psi | 81% | 2333 fps | 97.6% |
| ReloadSwiss RS 60 | 29.8 gr | 80% | 31,357 psi | 67% | 2211 fps | 98.6% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 35,447 psi | 75% | 2293 fps | 95.6% |
| ReloadSwiss RS 70 | 34.9 gr | 92% | 38,783 psi | 82% | 2356 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 38,290 psi | 81% | 2221 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 31,575 psi | 67% | 2142 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,189 psi | 81% | 2241 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,682 psi | 84% | 2287 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 36,593 psi | 78% | 2211 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,822 psi | 70% | 2192 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,653 psi | 84% | 2280 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,563 psi | 73% | 2113 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 32,648 psi | 69% | 2152 fps | 97% |
| Somchem S365 | <<locked>> | 84% | 26,789 psi | 57% | 2093 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 37,536 psi | 80% | 2211 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,101 psi | 81% | 2215 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,951 psi | 66% | 2096 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 86% | 33,489 psi | 71% | 2188 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 36,869 psi | 78% | 2211 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 34,940 psi | 74% | 2238 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 94% | 30,966 psi | 66% | 2218 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,617 psi | 63% | 2080 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,225 psi | 62% | 2211 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,827 psi | 82% | 2280 fps | 98.7% |
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 51 powders for 6.5 x 52 R K&S loaded with the .264 | 144gr | Lapua MaxRange Target OTM. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,428 fps; across all powders the maximum-charge window runs from 1,486 fps to 2,428 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 51 of the 51 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 66–90 %, leaving at least 10 % headroom. The 144.0 gr projectile in 0.264" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, Hodgdon TrailBoss 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, ReloadSwiss RS 70 rank at the top here: for 6.5 x 52 R K&S with the .264 | 144gr | Lapua MaxRange Target OTM 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.