Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 140gr | Hornady ECX bullet and 64 powders. The key underlying parameters are shown in the table above.
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>> | 86% | 40,698 psi | 86% | 2310 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 41,002 psi | 87% | 2346 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 42,163 psi | 89% | 2428 fps | 97.4% |
| ADI AR 2206H | <<locked>> | 82% | 40,495 psi | 86% | 2320 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 88% | 41,292 psi | 88% | 2320 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 82% | 41,597 psi | 88% | 2323 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 41,872 psi | 89% | 2441 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 40,292 psi | 85% | 2339 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 86% | 41,263 psi | 88% | 2356 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 40,089 psi | 85% | 2388 fps | 96.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 40,248 psi | 85% | 2421 fps | 98.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 42,279 psi | 90% | 2372 fps | 97.5% |
| Bofors RP3 | <<locked>> | 88% | 39,929 psi | 85% | 2346 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 82% | 40,567 psi | 86% | 2346 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 88% | 41,292 psi | 88% | 2349 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 82% | 40,799 psi | 87% | 2333 fps | 98.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,742 psi | 89% | 2385 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 41,829 psi | 89% | 2402 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,505 psi | 73% | 1490 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 42,032 psi | 89% | 2339 fps | 98.7% |
| IMR 3031 | <<locked>> | 84% | 42,540 psi | 90% | 2375 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 40,988 psi | 87% | 2310 fps | 97.8% |
| IMR 4831 | <<locked>> | 98% | 40,698 psi | 86% | 2385 fps | 97.1% |
| IMR 4895 | <<locked>> | 86% | 42,206 psi | 90% | 2385 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 84% | 41,205 psi | 87% | 2346 fps | 99.9% |
| Lovex S060 | <<locked>> | 82% | 41,191 psi | 87% | 2270 fps | 98.2% |
| Lovex S062 | <<locked>> | 86% | 40,219 psi | 85% | 2306 fps | 99.1% |
| Lovex S065 | <<locked>> | 94% | 42,177 psi | 89% | 2339 fps | 95.7% |
| Norma 201 | <<locked>> | 84% | 41,843 psi | 89% | 2320 fps | 99.3% |
| Norma 202 | <<locked>> | 84% | 42,337 psi | 90% | 2336 fps | 100% |
| Norma 203B | <<locked>> | 86% | 40,524 psi | 86% | 2346 fps | 98.2% |
| Norma URP | <<locked>> | 98% | 42,554 psi | 90% | 2425 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 86% | 40,016 psi | 85% | 2356 fps | 97.8% |
| Ramshot TAC | <<locked>> | 82% | 42,583 psi | 90% | 2333 fps | 96.1% |
| Ramshot Wild Boar | <<locked>> | 82% | 41,582 psi | 88% | 2349 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,679 psi | 74% | 1522 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 40,001 psi | 85% | 2395 fps | 97.5% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 39,929 psi | 85% | 2428 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 42,105 psi | 89% | 2448 fps | 97% |
| Rottweil R 902 | <<locked>> | 86% | 42,482 psi | 90% | 2323 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 90% | 39,856 psi | 85% | 2336 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 42,177 psi | 89% | 2339 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 41,205 psi | 87% | 2346 fps | 99.9% |
| Shooters World Precision | <<locked>> | 86% | 40,219 psi | 85% | 2306 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 41,379 psi | 88% | 2388 fps | 98.2% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 40,219 psi | 85% | 2303 fps | 96.1% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 41,539 psi | 88% | 2339 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 41,234 psi | 87% | 2244 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 41,060 psi | 87% | 2251 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 40,843 psi | 87% | 2251 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 40,030 psi | 85% | 2303 fps | 97.9% |
| Somchem S355 | <<locked>> | 90% | 41,133 psi | 87% | 2346 fps | 98.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,408 psi | 86% | 2428 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 82% | 41,408 psi | 88% | 2241 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 41,394 psi | 88% | 2306 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 42,540 psi | 90% | 2320 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 41,959 psi | 89% | 2333 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 96% | 42,163 psi | 89% | 2382 fps | 97.1% |
| Vihtavuori N530 | <<locked>> | 82% | 42,627 psi | 90% | 2329 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 86% | 41,002 psi | 87% | 2313 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 41,089 psi | 87% | 2382 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 40,350 psi | 86% | 2326 fps | 98.5% |
| Winchester 748 | <<locked>> | 82% | 41,597 psi | 88% | 2365 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 40,625 psi | 86% | 2339 fps | 98.6% |
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 33,301 psi | 71% | 2178 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 31,575 psi | 67% | 2165 fps | 99.3% |
| Accurate 4350 | <<locked>> | 92% | 33,997 psi | 72% | 2274 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 37,927 psi | 80% | 2274 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 82% | 34,258 psi | 73% | 2182 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 39,073 psi | 83% | 2283 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 36,434 psi | 77% | 2329 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,082 psi | 66% | 2152 fps | 96.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 33,837 psi | 72% | 2208 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 92% | 35,607 psi | 76% | 2293 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 84% | 30,835 psi | 65% | 2211 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 36,840 psi | 78% | 2270 fps | 96% |
| Bofors RP3 | <<locked>> | 80% | 30,356 psi | 64% | 2152 fps | 96.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,985 psi | 81% | 2300 fps | 99% |
| Hodgdon H380 | <<locked>> | 86% | 38,624 psi | 82% | 2300 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 38,218 psi | 81% | 2283 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 30,269 psi | 64% | 2149 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,026 psi | 72% | 2247 fps | 97.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,628 psi | 54% | 1329 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,854 psi | 78% | 2244 fps | 97.7% |
| IMR 3031 | <<locked>> | 80% | 37,304 psi | 79% | 2290 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 33,881 psi | 72% | 2169 fps | 95.7% |
| IMR 4831 | <<locked>> | 94% | 35,621 psi | 76% | 2287 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 34,621 psi | 73% | 2238 fps | 96.7% |
| Lovex D073.6 | <<locked>> | 80% | 35,969 psi | 76% | 2251 fps | 99.4% |
| Lovex S060 | <<locked>> | 80% | 38,609 psi | 82% | 2221 fps | 97.6% |
| Lovex S062 | <<locked>> | 80% | 33,257 psi | 71% | 2172 fps | 97.5% |
| Lovex S065 | <<locked>> | 92% | 39,552 psi | 84% | 2293 fps | 95% |
| Norma 201 | <<locked>> | 80% | 37,057 psi | 79% | 2234 fps | 98.4% |
| Norma 202 | <<locked>> | 80% | 37,043 psi | 79% | 2244 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 33,185 psi | 70% | 2201 fps | 96.1% |
| Norma URP | <<locked>> | 92% | 35,259 psi | 75% | 2283 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 32,677 psi | 69% | 2208 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 39,653 psi | 84% | 2280 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,986 psi | 83% | 2303 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,889 psi | 55% | 1362 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 34,867 psi | 74% | 2290 fps | 96% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 28,703 psi | 61% | 2165 fps | 96.9% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 36,912 psi | 78% | 2346 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 35,186 psi | 75% | 2192 fps | 98% |
| Rottweil R 903 | <<locked>> | 80% | 28,514 psi | 60% | 2100 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 39,552 psi | 84% | 2293 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,969 psi | 76% | 2251 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 33,257 psi | 71% | 2172 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 31,952 psi | 68% | 2195 fps | 95.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 37,652 psi | 80% | 2254 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,492 psi | 77% | 2244 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,914 psi | 83% | 2205 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,865 psi | 68% | 2087 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 38,276 psi | 81% | 2208 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 37,492 psi | 80% | 2257 fps | 97.2% |
| Somchem S355 | <<locked>> | 80% | 29,733 psi | 63% | 2113 fps | 95.3% |
| Somchem S365 | <<locked>> | 88% | 27,528 psi | 58% | 2136 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 39,102 psi | 83% | 2205 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,243 psi | 73% | 2185 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,172 psi | 75% | 2192 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 28,181 psi | 60% | 2060 fps | 96.3% |
| Vihtavuori N160 | <<locked>> | 92% | 36,956 psi | 78% | 2283 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 39,885 psi | 85% | 2280 fps | 99% |
| Vihtavuori N540 | <<locked>> | 80% | 33,736 psi | 72% | 2178 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 92% | 36,013 psi | 76% | 2287 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 30,864 psi | 65% | 2129 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 38,899 psi | 83% | 2320 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,592 psi | 76% | 2247 fps | 97.5% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 86 powders for 6.5 x 52 R K&S loaded with the .264 | 140gr | Hornady ECX. ReloadSwiss RS 62 delivers the highest muzzle velocity at 2,448 fps; across all powders the maximum-charge window runs from 1,490 fps to 2,448 fps. Accurate 3100 gives the best case fill at 100 %, and 86 of the 86 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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. As outliers, Accurate 2700, Accurate 3100, Alliant Reloder-26 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.