Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 140gr | Speer TBBC bullet and 55 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 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>> | 84% | 41,133 psi | 87% | 2313 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 41,350 psi | 88% | 2349 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 42,206 psi | 90% | 2431 fps | 97.6% |
| ADI AR 2206H | <<locked>> | 82% | 42,482 psi | 90% | 2359 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 86% | 41,162 psi | 87% | 2323 fps | 97.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 41,278 psi | 88% | 2438 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 40,437 psi | 86% | 2343 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 84% | 40,582 psi | 86% | 2346 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 42,366 psi | 90% | 2438 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 42,540 psi | 90% | 2470 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,721 psi | 72% | 2290 fps | 96.5% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 41,394 psi | 88% | 2362 fps | 97.4% |
| Bofors RP3 | <<locked>> | 88% | 42,554 psi | 90% | 2392 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 86% | 40,915 psi | 87% | 2346 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 41,437 psi | 88% | 2385 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 41,394 psi | 88% | 2395 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,853 psi | 74% | 1503 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 41,205 psi | 87% | 2329 fps | 98.7% |
| IMR 3031 | <<locked>> | 82% | 42,337 psi | 90% | 2372 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 40,625 psi | 86% | 2306 fps | 97.8% |
| IMR 4831 | <<locked>> | 96% | 40,698 psi | 86% | 2388 fps | 97.3% |
| IMR 4895 | <<locked>> | 84% | 41,568 psi | 88% | 2375 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 82% | 41,162 psi | 87% | 2343 fps | 99.9% |
| Lovex S062 | <<locked>> | 86% | 42,656 psi | 90% | 2349 fps | 99.5% |
| Lovex S065 | <<locked>> | 92% | 42,119 psi | 89% | 2343 fps | 95.9% |
| Norma 201 | <<locked>> | 82% | 41,756 psi | 89% | 2323 fps | 99.3% |
| Norma 202 | <<locked>> | 82% | 42,047 psi | 89% | 2333 fps | 100% |
| Norma 203B | <<locked>> | 86% | 42,496 psi | 90% | 2385 fps | 98.7% |
| Norma URP | <<locked>> | 96% | 42,366 psi | 90% | 2428 fps | 97.5% |
| Ramshot Big Game | <<locked>> | 86% | 42,148 psi | 89% | 2398 fps | 98.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,491 psi | 75% | 1542 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 42,453 psi | 90% | 2441 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 42,308 psi | 90% | 2474 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 41,916 psi | 89% | 2448 fps | 97.1% |
| Rottweil R 902 | <<locked>> | 84% | 42,308 psi | 90% | 2323 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 90% | 42,409 psi | 90% | 2382 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 42,119 psi | 89% | 2343 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 41,162 psi | 87% | 2343 fps | 99.9% |
| Shooters World Precision | <<locked>> | 86% | 42,656 psi | 90% | 2349 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 41,249 psi | 88% | 2388 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 42,540 psi | 90% | 2346 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,162 psi | 87% | 2336 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 40,567 psi | 86% | 2247 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 42,221 psi | 90% | 2346 fps | 98.5% |
| Somchem S355 | <<locked>> | 88% | 40,901 psi | 87% | 2346 fps | 98.7% |
| Somchem S365 | <<locked>> | 98% | 40,263 psi | 85% | 2431 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 84% | 41,234 psi | 87% | 2303 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 42,148 psi | 89% | 2316 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 41,466 psi | 88% | 2329 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 94% | 41,887 psi | 89% | 2382 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 84% | 40,683 psi | 86% | 2310 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 40,988 psi | 87% | 2385 fps | 96.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 35,926 psi | 76% | 2359 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 42,366 psi | 90% | 2369 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 82% | 40,263 psi | 85% | 2339 fps | 98.7% |
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% | 36,100 psi | 77% | 2228 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,142 psi | 72% | 2215 fps | 99.7% |
| Accurate 4350 | <<locked>> | 90% | 34,432 psi | 73% | 2283 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 39,943 psi | 85% | 2313 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 80% | 34,142 psi | 72% | 2182 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,143 psi | 77% | 2329 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,402 psi | 71% | 2205 fps | 97.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,781 psi | 76% | 2251 fps | 96.5% |
| Alliant Reloder-16 | 31 gr | 90% | 35,317 psi | 75% | 2290 fps | 95.4% |
| Alliant Reloder-17 | 30.5 gr | 82% | 30,806 psi | 65% | 2211 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 31,763 psi | 67% | 2241 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,914 psi | 83% | 2316 fps | 96.8% |
| Bofors RP3 | <<locked>> | 80% | 32,503 psi | 69% | 2198 fps | 97.2% |
| Hodgdon H380 | <<locked>> | 82% | 36,114 psi | 77% | 2251 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 30,255 psi | 64% | 2152 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,172 psi | 77% | 2297 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,846 psi | 55% | 1339 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,667 psi | 82% | 2280 fps | 98.2% |
| IMR 3031 | <<locked>> | 80% | 39,581 psi | 84% | 2326 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,752 psi | 76% | 2211 fps | 96.5% |
| IMR 4831 | <<locked>> | 90% | 33,576 psi | 71% | 2244 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 36,622 psi | 78% | 2280 fps | 97.4% |
| Lovex D073.6 | <<locked>> | 80% | 38,580 psi | 82% | 2300 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 35,650 psi | 76% | 2221 fps | 98.3% |
| Lovex S065 | <<locked>> | 90% | 39,610 psi | 84% | 2297 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 39,247 psi | 83% | 2277 fps | 99% |
| Norma 202 | <<locked>> | 80% | 39,479 psi | 84% | 2290 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,201 psi | 75% | 2244 fps | 96.9% |
| Norma URP | <<locked>> | 90% | 35,056 psi | 74% | 2283 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 34,693 psi | 74% | 2254 fps | 96.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,165 psi | 56% | 1371 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 36,883 psi | 78% | 2336 fps | 96.9% |
| ReloadSwiss RS 60 | 29.7 gr | 80% | 30,589 psi | 65% | 2218 fps | 98% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 36,622 psi | 78% | 2346 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 37,347 psi | 79% | 2234 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 80% | 30,676 psi | 65% | 2149 fps | 96.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 39,610 psi | 84% | 2297 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,580 psi | 82% | 2300 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 35,650 psi | 76% | 2221 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,647 psi | 67% | 2188 fps | 95.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,943 psi | 85% | 2300 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,348 psi | 81% | 2283 fps | 97.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,736 psi | 72% | 2126 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 39,697 psi | 84% | 2303 fps | 97.9% |
| Somchem S355 | <<locked>> | 80% | 31,778 psi | 67% | 2159 fps | 96.3% |
| Somchem S365 | <<locked>> | 86% | 27,717 psi | 59% | 2142 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 36,492 psi | 77% | 2224 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,159 psi | 79% | 2231 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 30,066 psi | 64% | 2106 fps | 97.2% |
| Vihtavuori N160 | <<locked>> | 88% | 34,722 psi | 74% | 2241 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 35,621 psi | 76% | 2218 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 36,172 psi | 77% | 2290 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 98% | 33,721 psi | 72% | 2313 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 30,705 psi | 65% | 2129 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,840 psi | 80% | 2293 fps | 98.2% |
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 55 powders for 6.5 x 52 R K&S loaded with the .264 | 140gr | Speer TBBC. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,474 fps; across all powders the maximum-charge window runs from 1,503 fps to 2,474 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 55 of the 55 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:9.0 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, Alliant Reloder-16 rank at the top here: for 6.5 x 52 R K&S with the .264 | 140gr | Speer TBBC 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.