Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 139gr | Lapua Scenar bullet and 58 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 62, Alliant Reloder-16 and ReloadSwiss RS 60.
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% | 40,263 psi | 85% | 2306 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 40,480 psi | 86% | 2339 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 41,365 psi | 88% | 2421 fps | 97.2% |
| ADI AR 2206H | <<locked>> | 82% | 42,105 psi | 89% | 2359 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 86% | 40,451 psi | 86% | 2313 fps | 97.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 40,538 psi | 86% | 2428 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 42,279 psi | 90% | 2382 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 84% | 40,205 psi | 85% | 2346 fps | 97.6% |
| Alliant Reloder-16 | <<locked>> | 96% | 41,742 psi | 89% | 2431 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 92% | 41,858 psi | 89% | 2464 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,199 psi | 70% | 2280 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 41,017 psi | 87% | 2359 fps | 97.2% |
| Bofors RP3 | <<locked>> | 88% | 41,713 psi | 88% | 2385 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 82% | 42,554 psi | 90% | 2388 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 86% | 40,219 psi | 85% | 2339 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 82% | 42,409 psi | 90% | 2369 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 40,741 psi | 86% | 2379 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 40,611 psi | 86% | 2388 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,795 psi | 74% | 1503 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 40,785 psi | 87% | 2326 fps | 98.6% |
| IMR 3031 | <<locked>> | 82% | 41,437 psi | 88% | 2365 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 42,482 psi | 90% | 2346 fps | 98.1% |
| IMR 4831 | <<locked>> | 98% | 42,627 psi | 90% | 2425 fps | 97.6% |
| IMR 4895 | <<locked>> | 84% | 41,176 psi | 87% | 2372 fps | 98.4% |
| Lovex D073.6 | <<locked>> | 82% | 40,683 psi | 86% | 2343 fps | 99.9% |
| Lovex S060 | <<locked>> | 82% | 42,598 psi | 90% | 2303 fps | 98.5% |
| Lovex S062 | <<locked>> | 86% | 42,264 psi | 90% | 2349 fps | 99.3% |
| Norma 201 | <<locked>> | 82% | 41,379 psi | 88% | 2320 fps | 99.2% |
| Norma 202 | <<locked>> | 82% | 41,234 psi | 87% | 2326 fps | 100% |
| Norma 203B | <<locked>> | 86% | 42,090 psi | 89% | 2382 fps | 98.5% |
| Norma URP | <<locked>> | 96% | 41,626 psi | 88% | 2418 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 86% | 41,771 psi | 89% | 2398 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,433 psi | 75% | 1545 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 41,568 psi | 88% | 2431 fps | 97.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 41,640 psi | 88% | 2467 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 41,162 psi | 87% | 2438 fps | 96.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 42,235 psi | 90% | 2454 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 84% | 41,568 psi | 88% | 2316 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 90% | 41,611 psi | 88% | 2375 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 40,683 psi | 86% | 2343 fps | 99.9% |
| Shooters World Precision | <<locked>> | 86% | 42,264 psi | 90% | 2349 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 40,538 psi | 86% | 2382 fps | 98.1% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 42,163 psi | 89% | 2346 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 40,393 psi | 86% | 2329 fps | 98% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 42,467 psi | 90% | 2283 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 42,482 psi | 90% | 2283 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 41,843 psi | 89% | 2346 fps | 98.3% |
| Somchem S355 | <<locked>> | 88% | 40,161 psi | 85% | 2336 fps | 98.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,148 psi | 89% | 2470 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 84% | 40,785 psi | 87% | 2303 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 41,785 psi | 89% | 2316 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 40,741 psi | 86% | 2323 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 94% | 41,220 psi | 87% | 2375 fps | 96.9% |
| Vihtavuori N540 | <<locked>> | 86% | 42,496 psi | 90% | 2346 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 40,277 psi | 85% | 2375 fps | 96.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 35,215 psi | 75% | 2349 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 41,756 psi | 89% | 2362 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 42,467 psi | 90% | 2382 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% | 35,592 psi | 76% | 2224 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 33,649 psi | 71% | 2215 fps | 99.6% |
| Accurate 4350 | <<locked>> | 92% | 36,056 psi | 76% | 2323 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 39,508 psi | 84% | 2313 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 33,779 psi | 72% | 2182 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 35,476 psi | 75% | 2316 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,706 psi | 69% | 2195 fps | 97% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,418 psi | 75% | 2251 fps | 96.2% |
| Alliant Reloder-16 | 30.8 gr | 90% | 34,998 psi | 74% | 2287 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 84% | 32,126 psi | 68% | 2251 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 31,256 psi | 66% | 2231 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,247 psi | 81% | 2306 fps | 96.4% |
| Bofors RP3 | <<locked>> | 80% | 32,111 psi | 68% | 2195 fps | 96.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,624 psi | 84% | 2336 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 84% | 37,724 psi | 80% | 2290 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 39,842 psi | 85% | 2323 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 29,950 psi | 64% | 2149 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,491 psi | 75% | 2287 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,078 psi | 55% | 1345 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,305 psi | 81% | 2280 fps | 98% |
| IMR 3031 | <<locked>> | 80% | 38,725 psi | 82% | 2320 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,389 psi | 75% | 2208 fps | 96.3% |
| IMR 4831 | <<locked>> | 92% | 35,099 psi | 74% | 2283 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 36,245 psi | 77% | 2277 fps | 97.2% |
| Lovex D073.6 | <<locked>> | 80% | 37,768 psi | 80% | 2290 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 40,030 psi | 85% | 2257 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 34,940 psi | 74% | 2211 fps | 98% |
| Norma 201 | <<locked>> | 80% | 38,812 psi | 82% | 2274 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 38,711 psi | 82% | 2283 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 34,809 psi | 74% | 2241 fps | 96.7% |
| Norma URP | <<locked>> | 92% | 36,666 psi | 78% | 2323 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 34,069 psi | 72% | 2244 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,034 psi | 55% | 1371 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 36,477 psi | 77% | 2333 fps | 96.6% |
| ReloadSwiss RS 60 | 29.5 gr | 80% | 30,269 psi | 64% | 2215 fps | 97.7% |
| ReloadSwiss RS 62 | 33.8 gr | 92% | 35,969 psi | 76% | 2336 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 39,334 psi | 83% | 2395 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 36,970 psi | 78% | 2231 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 30,269 psi | 64% | 2146 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,768 psi | 80% | 2290 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 34,940 psi | 74% | 2211 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,343 psi | 66% | 2185 fps | 95.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,233 psi | 83% | 2290 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,956 psi | 81% | 2283 fps | 97.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,359 psi | 71% | 2123 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 39,943 psi | 85% | 2244 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 38,943 psi | 83% | 2293 fps | 97.6% |
| Somchem S355 | <<locked>> | 80% | 31,386 psi | 67% | 2156 fps | 96% |
| Somchem S365 | <<locked>> | 86% | 27,195 psi | 58% | 2133 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 36,042 psi | 76% | 2224 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,767 psi | 78% | 2228 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 29,733 psi | 63% | 2103 fps | 96.9% |
| Vihtavuori N160 | <<locked>> | 90% | 36,289 psi | 77% | 2280 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 35,244 psi | 75% | 2215 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 92% | 37,826 psi | 80% | 2329 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 98% | 33,083 psi | 70% | 2300 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 30,211 psi | 64% | 2119 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,086 psi | 79% | 2283 fps | 97.9% |
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 58 powders for 6.5 x 52 R K&S loaded with the .264 | 139gr | Lapua Scenar. Somchem S365 delivers the highest muzzle velocity at 2,470 fps; across all powders the maximum-charge window runs from 1,503 fps to 2,470 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 58 of the 58 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 70–90 %, leaving at least 10 % headroom. The 139.0 gr projectile in 0.264" calls for a 1:8.5 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 62, Alliant Reloder-16, ReloadSwiss RS 60 rank at the top here: for 6.5 x 52 R K&S with the .264 | 139gr | Lapua Scenar 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.