Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 140gr | Speer Hot-Cor bullet and 47 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, Somchem S365 and Alliant Reloder-17.
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% | 40,814 psi | 87% | 2320 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 40,915 psi | 87% | 2356 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 42,003 psi | 89% | 2444 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 84% | 40,118 psi | 85% | 2323 fps | 97.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 40,364 psi | 86% | 2441 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 42,322 psi | 90% | 2392 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 82% | 40,030 psi | 85% | 2352 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 94% | 42,003 psi | 89% | 2454 fps | 98% |
| Alliant Reloder-17 | <<locked>> | 90% | 41,727 psi | 89% | 2477 fps | 99.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,694 psi | 76% | 2356 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,363 psi | 84% | 2487 fps | 96.4% |
| Bofors RP3 | <<locked>> | 86% | 41,785 psi | 89% | 2395 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 84% | 40,190 psi | 85% | 2349 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 40,712 psi | 86% | 2392 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 40,683 psi | 86% | 2402 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,201 psi | 75% | 1526 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 42,134 psi | 89% | 2352 fps | 98.4% |
| IMR 4831 | <<locked>> | 94% | 40,118 psi | 85% | 2395 fps | 97.4% |
| IMR 4895 | <<locked>> | 82% | 40,959 psi | 87% | 2382 fps | 98.7% |
| Lovex S062 | <<locked>> | 84% | 42,032 psi | 89% | 2356 fps | 99.5% |
| Lovex S065 | <<locked>> | 90% | 41,582 psi | 88% | 2352 fps | 96.2% |
| Norma 203B | <<locked>> | 84% | 42,163 psi | 89% | 2395 fps | 98.8% |
| Norma URP | <<locked>> | 94% | 42,018 psi | 89% | 2438 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 84% | 41,597 psi | 88% | 2408 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,462 psi | 75% | 1562 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 41,814 psi | 89% | 2448 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 41,568 psi | 88% | 2480 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 41,452 psi | 88% | 2457 fps | 97.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,989 psi | 89% | 2470 fps | 96.7% |
| Rottweil R 902 | <<locked>> | 82% | 41,437 psi | 88% | 2326 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 88% | 42,047 psi | 89% | 2395 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 41,582 psi | 88% | 2352 fps | 96.2% |
| Shooters World Precision | <<locked>> | 84% | 42,032 psi | 89% | 2356 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 40,408 psi | 86% | 2392 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 42,496 psi | 90% | 2293 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 40,263 psi | 85% | 2349 fps | 98.8% |
| Somchem S365 | <<locked>> | 98% | 42,395 psi | 90% | 2487 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 82% | 40,886 psi | 87% | 2313 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 41,568 psi | 88% | 2323 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 41,002 psi | 87% | 2336 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 92% | 41,234 psi | 87% | 2388 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 84% | 42,438 psi | 90% | 2356 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 40,683 psi | 86% | 2395 fps | 97.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,334 psi | 81% | 2425 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 41,568 psi | 88% | 2375 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,763 psi | 67% | 2333 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 82% | 42,409 psi | 90% | 2392 fps | 99.2% |
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% | 37,971 psi | 81% | 2270 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,940 psi | 76% | 2264 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 33,953 psi | 72% | 2287 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 35,607 psi | 76% | 2231 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,681 psi | 80% | 2385 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,998 psi | 74% | 2254 fps | 98% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,710 psi | 80% | 2310 fps | 97.4% |
| Alliant Reloder-16 | 31.8 gr | 88% | 34,925 psi | 74% | 2303 fps | 95.7% |
| Alliant Reloder-17 | 31.1 gr | 80% | 30,052 psi | 64% | 2211 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 29,791 psi | 63% | 2211 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,753 psi | 78% | 2428 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 34,403 psi | 73% | 2254 fps | 98% |
| Hodgdon H380 | <<locked>> | 80% | 35,288 psi | 75% | 2254 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,081 psi | 64% | 2165 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,985 psi | 81% | 2349 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,208 psi | 56% | 1362 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,362 psi | 79% | 2260 fps | 97.3% |
| IMR 4831 | <<locked>> | 88% | 33,098 psi | 70% | 2251 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 38,551 psi | 82% | 2336 fps | 98.2% |
| Lovex S062 | <<locked>> | 80% | 37,289 psi | 79% | 2270 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 38,870 psi | 82% | 2300 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 37,101 psi | 79% | 2300 fps | 97.8% |
| Norma URP | <<locked>> | 88% | 34,737 psi | 74% | 2293 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 36,318 psi | 77% | 2306 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,527 psi | 56% | 1394 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,914 psi | 83% | 2392 fps | 97.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 31,995 psi | 68% | 2274 fps | 98.8% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 34,026 psi | 72% | 2306 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 39,233 psi | 83% | 2415 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 39,015 psi | 83% | 2280 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 32,242 psi | 68% | 2198 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,870 psi | 82% | 2300 fps | 95.4% |
| Shooters World Precision | <<locked>> | 80% | 37,289 psi | 79% | 2270 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,243 psi | 71% | 2244 fps | 96.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,288 psi | 75% | 2169 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 33,301 psi | 71% | 2208 fps | 97.1% |
| Somchem S365 | 30.2 gr | 82% | 25,585 psi | 54% | 2096 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 38,392 psi | 81% | 2270 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,754 psi | 82% | 2274 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,517 psi | 67% | 2152 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 86% | 34,142 psi | 72% | 2247 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 37,391 psi | 79% | 2267 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 35,476 psi | 75% | 2293 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 94% | 31,647 psi | 67% | 2280 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,052 psi | 64% | 2129 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,733 psi | 63% | 2270 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,595 psi | 84% | 2343 fps | 98.8% |
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 | Speer Hot-Cor. Alliant Reloder-26 delivers the highest muzzle velocity at 2,487 fps; across all powders the maximum-charge window runs from 1,526 fps to 2,487 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 1:10.5 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. Alliant Reloder-16, Somchem S365, Alliant Reloder-17 rank at the top here: for 6.5 x 52 R K&S with the .264 | 140gr | Speer Hot-Cor 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.