Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 139gr | Norma HP bullet and 48 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 62.
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% | 42,018 psi | 89% | 2343 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 42,540 psi | 90% | 2385 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 40,756 psi | 86% | 2425 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 86% | 41,800 psi | 89% | 2352 fps | 98% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,090 psi | 89% | 2474 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 41,104 psi | 87% | 2372 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 84% | 41,684 psi | 88% | 2385 fps | 98.1% |
| Alliant Reloder-16 | <<locked>> | 94% | 41,002 psi | 87% | 2434 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 90% | 40,727 psi | 86% | 2457 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,577 psi | 73% | 2329 fps | 97% |
| Bofors RP3 | <<locked>> | 86% | 40,930 psi | 87% | 2382 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 86% | 41,930 psi | 89% | 2382 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 42,206 psi | 90% | 2418 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 42,380 psi | 90% | 2434 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,157 psi | 75% | 1526 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,250 psi | 90% | 2365 fps | 99% |
| IMR 4064 | <<locked>> | 84% | 41,350 psi | 88% | 2339 fps | 98.1% |
| IMR 4831 | <<locked>> | 96% | 41,916 psi | 89% | 2428 fps | 97.7% |
| IMR 4895 | <<locked>> | 84% | 42,656 psi | 90% | 2415 fps | 98.8% |
| Lovex D073.6 | <<locked>> | 82% | 42,279 psi | 90% | 2382 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 41,205 psi | 87% | 2343 fps | 99.3% |
| Norma 201 | <<locked>> | 82% | 42,569 psi | 90% | 2356 fps | 99.5% |
| Norma 203B | <<locked>> | 84% | 41,002 psi | 87% | 2375 fps | 98.5% |
| Norma URP | <<locked>> | 94% | 40,930 psi | 87% | 2421 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 84% | 40,495 psi | 86% | 2388 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,404 psi | 75% | 1558 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 40,886 psi | 87% | 2431 fps | 98% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 40,538 psi | 86% | 2464 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 40,393 psi | 86% | 2438 fps | 96.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,133 psi | 87% | 2451 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 82% | 40,553 psi | 86% | 2313 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 88% | 40,828 psi | 87% | 2375 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 82% | 42,279 psi | 90% | 2382 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 41,205 psi | 87% | 2343 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,090 psi | 89% | 2425 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 42,119 psi | 89% | 2372 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 41,292 psi | 88% | 2277 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 41,945 psi | 89% | 2382 fps | 99% |
| Somchem S365 | <<locked>> | 98% | 41,336 psi | 88% | 2470 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 84% | 42,177 psi | 89% | 2336 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 40,683 psi | 86% | 2310 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 42,438 psi | 90% | 2362 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 92% | 40,161 psi | 85% | 2369 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 84% | 41,626 psi | 88% | 2343 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 42,090 psi | 89% | 2425 fps | 97.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,956 psi | 78% | 2398 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 40,727 psi | 86% | 2359 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 82% | 41,263 psi | 88% | 2375 fps | 98.9% |
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% | 36,985 psi | 78% | 2260 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,983 psi | 74% | 2251 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 35,404 psi | 75% | 2320 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 34,853 psi | 74% | 2218 fps | 96.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,999 psi | 78% | 2369 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,185 psi | 73% | 2238 fps | 97.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,898 psi | 78% | 2293 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,011 psi | 72% | 2280 fps | 95% |
| Alliant Reloder-17 | 31.3 gr | 82% | 31,270 psi | 66% | 2244 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,734 psi | 65% | 2234 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 33,547 psi | 71% | 2238 fps | 97.6% |
| Hodgdon H380 | <<locked>> | 82% | 36,724 psi | 78% | 2283 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,196 psi | 62% | 2142 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,825 psi | 78% | 2329 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,020 psi | 55% | 1358 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,740 psi | 84% | 2323 fps | 98.5% |
| IMR 4064 | <<locked>> | 80% | 36,521 psi | 77% | 2247 fps | 96.9% |
| IMR 4831 | <<locked>> | 90% | 34,403 psi | 73% | 2280 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 37,710 psi | 80% | 2320 fps | 97.8% |
| Lovex D073.6 | <<locked>> | 80% | 39,392 psi | 84% | 2333 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 36,419 psi | 77% | 2254 fps | 98.5% |
| Norma 201 | <<locked>> | 80% | 40,030 psi | 85% | 2310 fps | 99.2% |
| Norma 203B | <<locked>> | 80% | 36,260 psi | 77% | 2283 fps | 97.4% |
| Norma URP | <<locked>> | 90% | 35,911 psi | 76% | 2320 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 35,592 psi | 76% | 2290 fps | 96.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,324 psi | 56% | 1391 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,985 psi | 81% | 2375 fps | 97.3% |
| ReloadSwiss RS 60 | 30.6 gr | 80% | 31,372 psi | 67% | 2257 fps | 98.4% |
| ReloadSwiss RS 62 | 34.4 gr | 90% | 35,447 psi | 75% | 2339 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 38,435 psi | 82% | 2395 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 38,174 psi | 81% | 2267 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 31,415 psi | 67% | 2185 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,392 psi | 84% | 2333 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 36,419 psi | 77% | 2254 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,532 psi | 69% | 2228 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,378 psi | 84% | 2323 fps | 98% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,519 psi | 73% | 2156 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 32,503 psi | 69% | 2195 fps | 96.7% |
| Somchem S365 | <<locked>> | 84% | 26,556 psi | 56% | 2126 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 37,434 psi | 79% | 2257 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,927 psi | 80% | 2260 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,748 psi | 65% | 2136 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 88% | 35,534 psi | 75% | 2280 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 36,593 psi | 78% | 2254 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 34,795 psi | 74% | 2280 fps | 95% |
| Vihtavuori N555 | <<locked>> | 96% | 32,663 psi | 69% | 2303 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,559 psi | 63% | 2116 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,479 psi | 82% | 2323 fps | 98.4% |
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 48 powders for 6.5 x 52 R K&S loaded with the .264 | 139gr | Norma HP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,474 fps; across all powders the maximum-charge window runs from 1,526 fps to 2,474 fps. Alliant Reloder-23 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 73–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.264" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, 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, ReloadSwiss RS 62 rank at the top here: for 6.5 x 52 R K&S with the .264 | 139gr | Norma HP 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.