Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 140gr | RWS Doppelkern bullet and 45 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>> | 82% | 41,771 psi | 89% | 2343 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 42,235 psi | 90% | 2385 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 40,785 psi | 87% | 2431 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 84% | 41,539 psi | 88% | 2359 fps | 98.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 41,669 psi | 88% | 2480 fps | 98.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 40,988 psi | 87% | 2379 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 82% | 41,162 psi | 87% | 2385 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 92% | 40,437 psi | 86% | 2438 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 88% | 40,495 psi | 86% | 2464 fps | 99.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,912 psi | 78% | 2395 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,814 psi | 87% | 2533 fps | 97.2% |
| Bofors RP3 | <<locked>> | 84% | 40,437 psi | 86% | 2382 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 84% | 41,582 psi | 88% | 2388 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 42,293 psi | 90% | 2431 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 41,829 psi | 89% | 2431 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,433 psi | 75% | 1542 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 40,814 psi | 87% | 2339 fps | 98.3% |
| IMR 4831 | <<locked>> | 94% | 41,800 psi | 89% | 2434 fps | 98% |
| IMR 4895 | <<locked>> | 82% | 42,163 psi | 89% | 2415 fps | 99% |
| Lovex S062 | <<locked>> | 82% | 40,770 psi | 86% | 2346 fps | 99.5% |
| Lovex S065 | <<locked>> | 90% | 42,511 psi | 90% | 2382 fps | 96.7% |
| Norma 203B | <<locked>> | 82% | 40,538 psi | 86% | 2375 fps | 98.7% |
| Norma URP | <<locked>> | 92% | 40,843 psi | 87% | 2428 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 82% | 40,205 psi | 85% | 2392 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 94% | 42,583 psi | 90% | 2464 fps | 96.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,679 psi | 76% | 1575 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 40,408 psi | 86% | 2470 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 40,176 psi | 85% | 2444 fps | 97.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,480 psi | 86% | 2454 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 82% | 42,612 psi | 90% | 2356 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 86% | 40,683 psi | 86% | 2379 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,511 psi | 90% | 2382 fps | 96.7% |
| Shooters World Precision | <<locked>> | 82% | 40,770 psi | 86% | 2346 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 41,727 psi | 89% | 2428 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 41,075 psi | 87% | 2280 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 41,365 psi | 88% | 2379 fps | 99.1% |
| Somchem S365 | <<locked>> | 96% | 41,466 psi | 88% | 2480 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 82% | 41,916 psi | 89% | 2339 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 42,409 psi | 90% | 2372 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 90% | 40,059 psi | 85% | 2379 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 82% | 41,060 psi | 87% | 2343 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 41,887 psi | 89% | 2428 fps | 97.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,914 psi | 85% | 2464 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 40,147 psi | 85% | 2362 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,982 psi | 70% | 2385 fps | 97.8% |
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 39,320 psi | 83% | 2303 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 37,202 psi | 79% | 2297 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 33,199 psi | 70% | 2280 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 36,651 psi | 78% | 2264 fps | 97.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,957 psi | 83% | 2425 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,158 psi | 77% | 2287 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,827 psi | 82% | 2339 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 33,794 psi | 72% | 2287 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 31,140 psi | 66% | 2251 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 28,979 psi | 61% | 2198 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 96% | 35,389 psi | 75% | 2411 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 35,520 psi | 75% | 2287 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 80% | 36,332 psi | 77% | 2283 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,935 psi | 61% | 2146 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,073 psi | 83% | 2382 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,310 psi | 56% | 1375 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,479 psi | 82% | 2297 fps | 97.8% |
| IMR 4831 | <<locked>> | 86% | 32,068 psi | 68% | 2238 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 39,740 psi | 84% | 2369 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 38,159 psi | 81% | 2297 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 37,579 psi | 80% | 2287 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 38,247 psi | 81% | 2333 fps | 98.2% |
| Norma URP | <<locked>> | 86% | 33,634 psi | 71% | 2280 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 37,623 psi | 80% | 2343 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 39,900 psi | 85% | 2415 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,629 psi | 56% | 1407 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,127 psi | 70% | 2313 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 35,114 psi | 74% | 2339 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 37,971 psi | 81% | 2398 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 40,219 psi | 85% | 2316 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 33,359 psi | 71% | 2234 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 37,579 psi | 80% | 2287 fps | 95.2% |
| Shooters World Precision | <<locked>> | 80% | 38,159 psi | 81% | 2297 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,476 psi | 73% | 2283 fps | 97.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,143 psi | 77% | 2195 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 34,374 psi | 73% | 2241 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 26,629 psi | 56% | 2139 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 80% | 39,421 psi | 84% | 2297 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,532 psi | 69% | 2185 fps | 98.4% |
| Vihtavuori N160 | <<locked>> | 84% | 33,025 psi | 70% | 2234 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 38,406 psi | 81% | 2297 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 34,621 psi | 73% | 2283 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 92% | 30,922 psi | 66% | 2270 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,037 psi | 62% | 2116 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,037 psi | 62% | 2264 fps | 95.3% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 74 powders for 6.5 x 52 R K&S loaded with the .264 | 140gr | RWS Doppelkern. Alliant Reloder-26 delivers the highest muzzle velocity at 2,533 fps; across all powders the maximum-charge window runs from 1,542 fps to 2,533 fps. Accurate 3100 gives the best case fill at 100 %, and 74 of the 74 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 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Alliant Reloder-22 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 High Country, ADI AR 2209 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.