Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 140gr | Nosler Partition 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 42,163 psi | 89% | 2333 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 42,337 psi | 90% | 2372 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 40,625 psi | 86% | 2411 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 86% | 41,959 psi | 89% | 2346 fps | 98.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,264 psi | 90% | 2470 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 41,278 psi | 88% | 2365 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 84% | 41,814 psi | 89% | 2379 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 94% | 40,814 psi | 87% | 2421 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 90% | 40,930 psi | 87% | 2451 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,751 psi | 74% | 2326 fps | 97.2% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 42,540 psi | 90% | 2392 fps | 97.9% |
| Bofors RP3 | <<locked>> | 86% | 41,060 psi | 87% | 2375 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 86% | 42,105 psi | 89% | 2375 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 42,424 psi | 90% | 2411 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 42,221 psi | 90% | 2421 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,969 psi | 74% | 1512 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,395 psi | 90% | 2359 fps | 99% |
| IMR 4064 | <<locked>> | 84% | 41,452 psi | 88% | 2329 fps | 98.2% |
| IMR 4831 | <<locked>> | 96% | 41,756 psi | 89% | 2415 fps | 97.7% |
| IMR 4895 | <<locked>> | 82% | 40,248 psi | 85% | 2359 fps | 98.4% |
| Lovex D073.6 | <<locked>> | 82% | 42,467 psi | 90% | 2372 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 41,321 psi | 88% | 2336 fps | 99.4% |
| Norma 203B | <<locked>> | 84% | 41,133 psi | 87% | 2369 fps | 98.5% |
| Norma URP | <<locked>> | 94% | 40,785 psi | 87% | 2408 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 84% | 40,698 psi | 86% | 2385 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,621 psi | 76% | 1555 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 40,698 psi | 86% | 2418 fps | 98% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 40,727 psi | 86% | 2457 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 40,611 psi | 86% | 2434 fps | 97% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 40,988 psi | 87% | 2438 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 82% | 40,669 psi | 86% | 2303 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 88% | 41,002 psi | 87% | 2369 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 82% | 42,467 psi | 90% | 2372 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 41,321 psi | 88% | 2336 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,308 psi | 90% | 2418 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,945 psi | 89% | 2359 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 41,423 psi | 88% | 2267 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 41,684 psi | 88% | 2369 fps | 99% |
| Somchem S365 | <<locked>> | 98% | 41,553 psi | 88% | 2464 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 84% | 42,337 psi | 90% | 2329 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 40,466 psi | 86% | 2297 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 42,627 psi | 90% | 2356 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 92% | 40,350 psi | 86% | 2365 fps | 97% |
| Vihtavuori N540 | <<locked>> | 84% | 41,800 psi | 89% | 2336 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 42,351 psi | 90% | 2418 fps | 97.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,173 psi | 79% | 2395 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 40,582 psi | 86% | 2346 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 82% | 41,452 psi | 88% | 2369 fps | 99% |
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% | 37,086 psi | 79% | 2251 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,099 psi | 74% | 2241 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 35,563 psi | 75% | 2316 fps | 95.9% |
| ADI AR 2208 | <<locked>> | 80% | 34,925 psi | 74% | 2208 fps | 96.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,811 psi | 78% | 2356 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,258 psi | 73% | 2231 fps | 97.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,680 psi | 78% | 2280 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,127 psi | 72% | 2274 fps | 95.1% |
| Alliant Reloder-17 | 30.5 gr | 80% | 29,588 psi | 63% | 2192 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,922 psi | 66% | 2231 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,668 psi | 84% | 2339 fps | 97.2% |
| Bofors RP3 | <<locked>> | 80% | 33,678 psi | 71% | 2231 fps | 97.7% |
| Hodgdon H380 | <<locked>> | 82% | 36,883 psi | 78% | 2277 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,312 psi | 62% | 2139 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,999 psi | 78% | 2323 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,165 psi | 56% | 1352 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,523 psi | 84% | 2306 fps | 98.5% |
| IMR 4064 | <<locked>> | 80% | 36,637 psi | 78% | 2241 fps | 97% |
| IMR 4831 | <<locked>> | 90% | 34,592 psi | 73% | 2277 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 37,521 psi | 80% | 2306 fps | 97.8% |
| Lovex D073.6 | <<locked>> | 80% | 39,523 psi | 84% | 2323 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 36,216 psi | 77% | 2241 fps | 98.5% |
| Norma 203B | <<locked>> | 80% | 36,042 psi | 76% | 2270 fps | 97.3% |
| Norma URP | <<locked>> | 88% | 33,895 psi | 72% | 2267 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 35,433 psi | 75% | 2280 fps | 96.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,484 psi | 56% | 1388 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,174 psi | 81% | 2372 fps | 97.4% |
| ReloadSwiss RS 60 | 30.5 gr | 80% | 31,473 psi | 67% | 2251 fps | 98.5% |
| ReloadSwiss RS 62 | 34.2 gr | 90% | 35,302 psi | 75% | 2326 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 38,609 psi | 82% | 2388 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 38,261 psi | 81% | 2260 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 31,517 psi | 67% | 2178 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,523 psi | 84% | 2323 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 36,216 psi | 77% | 2241 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,663 psi | 69% | 2221 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,479 psi | 84% | 2316 fps | 98.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,577 psi | 73% | 2149 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 32,605 psi | 69% | 2185 fps | 96.8% |
| Somchem S365 | <<locked>> | 84% | 26,643 psi | 57% | 2123 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 37,521 psi | 80% | 2251 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,043 psi | 81% | 2254 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,879 psi | 66% | 2133 fps | 97.6% |
| Vihtavuori N160 | <<locked>> | 88% | 35,389 psi | 75% | 2267 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 36,724 psi | 78% | 2247 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 34,635 psi | 73% | 2267 fps | 95% |
| Vihtavuori N555 | <<locked>> | 96% | 32,837 psi | 70% | 2300 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,428 psi | 62% | 2106 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,638 psi | 82% | 2316 fps | 98.5% |
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 | 140gr | Nosler Partition. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,470 fps; across all powders the maximum-charge window runs from 1,512 fps to 2,470 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 74–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:9.5 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 | 140gr | Nosler Partition 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.