Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 140gr | Sellier & Bellot SP bullet and 47 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 62 and Alliant Reloder-16.
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>> | 82% | 40,335 psi | 86% | 2310 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 40,857 psi | 87% | 2352 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 41,582 psi | 88% | 2434 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 86% | 42,496 psi | 90% | 2362 fps | 98.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 40,292 psi | 85% | 2438 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 41,887 psi | 89% | 2385 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 84% | 42,409 psi | 90% | 2398 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 94% | 41,597 psi | 88% | 2444 fps | 97.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 41,698 psi | 88% | 2474 fps | 99.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,360 psi | 75% | 2346 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,059 psi | 83% | 2477 fps | 96.3% |
| Bofors RP3 | <<locked>> | 86% | 41,698 psi | 88% | 2392 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 84% | 40,118 psi | 85% | 2349 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 40,669 psi | 86% | 2388 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 40,277 psi | 85% | 2392 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,998 psi | 74% | 1522 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 42,090 psi | 89% | 2349 fps | 98.4% |
| IMR 4831 | <<locked>> | 96% | 42,612 psi | 90% | 2434 fps | 98% |
| IMR 4895 | <<locked>> | 82% | 40,901 psi | 87% | 2379 fps | 98.6% |
| Lovex S062 | <<locked>> | 84% | 41,974 psi | 89% | 2356 fps | 99.5% |
| Lovex S065 | <<locked>> | 90% | 41,162 psi | 87% | 2343 fps | 96% |
| Norma 203B | <<locked>> | 84% | 41,727 psi | 89% | 2385 fps | 98.7% |
| Norma URP | <<locked>> | 94% | 41,655 psi | 88% | 2431 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 84% | 41,191 psi | 87% | 2398 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,636 psi | 76% | 1562 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 41,756 psi | 89% | 2444 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 41,553 psi | 88% | 2480 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 41,437 psi | 88% | 2454 fps | 97.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,959 psi | 89% | 2467 fps | 96.7% |
| Rottweil R 902 | <<locked>> | 82% | 41,350 psi | 88% | 2323 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 88% | 41,568 psi | 88% | 2382 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 41,162 psi | 87% | 2343 fps | 96% |
| Shooters World Precision | <<locked>> | 84% | 41,974 psi | 89% | 2356 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 40,335 psi | 86% | 2388 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 42,032 psi | 89% | 2283 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 40,161 psi | 85% | 2346 fps | 98.8% |
| Somchem S365 | <<locked>> | 98% | 42,366 psi | 90% | 2484 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 82% | 40,451 psi | 86% | 2306 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 41,481 psi | 88% | 2320 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 40,596 psi | 86% | 2329 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 92% | 41,220 psi | 87% | 2385 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 84% | 42,380 psi | 90% | 2352 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 40,277 psi | 85% | 2388 fps | 97% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,942 psi | 80% | 2415 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 41,539 psi | 88% | 2372 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,502 psi | 67% | 2323 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 42,003 psi | 89% | 2385 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% | 37,840 psi | 80% | 2270 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,810 psi | 76% | 2260 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 33,881 psi | 72% | 2283 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 35,520 psi | 75% | 2228 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,652 psi | 80% | 2382 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,940 psi | 74% | 2251 fps | 98% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,275 psi | 79% | 2297 fps | 97.2% |
| Alliant Reloder-16 | 31.7 gr | 88% | 34,853 psi | 74% | 2300 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 30,023 psi | 64% | 2211 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 29,718 psi | 63% | 2205 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,419 psi | 77% | 2418 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 34,287 psi | 73% | 2251 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 80% | 35,215 psi | 75% | 2251 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,776 psi | 63% | 2156 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,884 psi | 80% | 2346 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,324 psi | 56% | 1362 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,260 psi | 79% | 2257 fps | 97.3% |
| IMR 4831 | <<locked>> | 88% | 33,025 psi | 70% | 2247 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 38,145 psi | 81% | 2326 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 36,869 psi | 78% | 2260 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 38,798 psi | 82% | 2297 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 36,695 psi | 78% | 2290 fps | 97.6% |
| Norma URP | <<locked>> | 88% | 34,418 psi | 73% | 2287 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 36,230 psi | 77% | 2303 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,310 psi | 56% | 1391 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,812 psi | 82% | 2388 fps | 97.7% |
| ReloadSwiss RS 60 | 31 gr | 80% | 31,952 psi | 68% | 2270 fps | 98.7% |
| ReloadSwiss RS 62 | 34.8 gr | 90% | 36,042 psi | 76% | 2349 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 39,218 psi | 83% | 2411 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 38,943 psi | 83% | 2277 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 32,126 psi | 68% | 2195 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,798 psi | 82% | 2297 fps | 95.3% |
| Shooters World Precision | <<locked>> | 80% | 36,869 psi | 78% | 2260 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,156 psi | 70% | 2241 fps | 96.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,867 psi | 74% | 2162 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 33,185 psi | 70% | 2205 fps | 97.1% |
| Somchem S365 | <<locked>> | 84% | 27,311 psi | 58% | 2146 fps | 96% |
| Vihtavuori N135 | <<locked>> | 80% | 37,942 psi | 80% | 2264 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,682 psi | 82% | 2270 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,430 psi | 67% | 2149 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 86% | 34,069 psi | 72% | 2244 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 37,275 psi | 79% | 2264 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 35,418 psi | 75% | 2290 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 94% | 31,299 psi | 66% | 2270 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,008 psi | 64% | 2129 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,762 psi | 63% | 2270 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,537 psi | 84% | 2339 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 47 powders for 6.5 x 52 R K&S loaded with the .264 | 140gr | Sellier & Bellot SP. Somchem S365 delivers the highest muzzle velocity at 2,484 fps; across all powders the maximum-charge window runs from 1,522 fps to 2,484 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 47 of the 47 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 67–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:10.0 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, ReloadSwiss RS 62, Alliant Reloder-16 rank at the top here: for 6.5 x 52 R K&S with the .264 | 140gr | Sellier & Bellot SP 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.