Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 126gr | Lehigh Defense Controlled Chaos bullet and 59 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Ramshot Big Game.
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>> | 88% | 42,656 psi | 90% | 2474 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 41,611 psi | 88% | 2470 fps | 99.6% |
| Accurate 4064 | <<locked>> | 88% | 40,118 psi | 85% | 2461 fps | 99.9% |
| Accurate 4350 | <<locked>> | 98% | 40,466 psi | 86% | 2526 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 84% | 41,843 psi | 89% | 2474 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 88% | 40,219 psi | 85% | 2425 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 41,408 psi | 88% | 2441 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 82% | 40,480 psi | 86% | 2448 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 41,669 psi | 88% | 2490 fps | 98.3% |
| Alliant Reloder-15 | <<locked>> | 86% | 39,755 psi | 84% | 2454 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 98% | 41,510 psi | 88% | 2536 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 94% | 41,510 psi | 88% | 2572 fps | 97.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 40,828 psi | 87% | 2474 fps | 96% |
| Bofors RP3 | <<locked>> | 90% | 41,292 psi | 88% | 2497 fps | 98.3% |
| Hodgdon BL-C2 | <<locked>> | 84% | 42,308 psi | 90% | 2507 fps | 99.1% |
| Hodgdon H4895 | <<locked>> | 84% | 42,119 psi | 89% | 2484 fps | 98.1% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,335 psi | 86% | 2484 fps | 97.4% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 40,364 psi | 86% | 2503 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,490 psi | 73% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 40,611 psi | 86% | 2441 fps | 97.6% |
| IMR 3031 | <<locked>> | 84% | 40,988 psi | 87% | 2487 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 42,235 psi | 90% | 2457 fps | 97.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 41,829 psi | 89% | 2530 fps | 96.3% |
| IMR 4895 | <<locked>> | 86% | 40,698 psi | 86% | 2487 fps | 97.3% |
| IMR 8208 XBR | <<locked>> | 82% | 41,408 psi | 88% | 2441 fps | 98.4% |
| Lovex D073.6 | <<locked>> | 84% | 40,089 psi | 85% | 2454 fps | 99.4% |
| Lovex S060 | <<locked>> | 82% | 40,147 psi | 85% | 2375 fps | 97% |
| Lovex S062 | <<locked>> | 88% | 41,843 psi | 89% | 2464 fps | 98.6% |
| Norma 201 | <<locked>> | 84% | 41,176 psi | 87% | 2434 fps | 98.5% |
| Norma 202 | <<locked>> | 84% | 41,017 psi | 87% | 2444 fps | 99.8% |
| Norma 203B | <<locked>> | 88% | 41,945 psi | 89% | 2500 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 88% | 41,408 psi | 88% | 2510 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 82% | 40,335 psi | 86% | 2454 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,635 psi | 73% | 1617 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 41,234 psi | 87% | 2549 fps | 96.8% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 41,655 psi | 88% | 2589 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 82% | 42,598 psi | 90% | 2438 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 86% | 41,350 psi | 88% | 2431 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 92% | 41,220 psi | 87% | 2490 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 84% | 40,089 psi | 85% | 2454 fps | 99.4% |
| Shooters World Precision | <<locked>> | 88% | 41,843 psi | 89% | 2464 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 40,219 psi | 85% | 2493 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 40,379 psi | 86% | 2444 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 40,321 psi | 86% | 2356 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 42,322 psi | 90% | 2402 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 42,395 psi | 90% | 2405 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 41,655 psi | 88% | 2461 fps | 97.3% |
| Somchem S355 | <<locked>> | 92% | 42,482 psi | 90% | 2500 fps | 98.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,986 psi | 83% | 2526 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 82% | 40,393 psi | 86% | 2356 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 40,379 psi | 86% | 2425 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 41,394 psi | 88% | 2431 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 92% | 40,495 psi | 86% | 2438 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 82% | 41,278 psi | 88% | 2434 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 88% | 42,366 psi | 90% | 2467 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 98% | 42,540 psi | 90% | 2533 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 41,800 psi | 89% | 2470 fps | 97.8% |
| Winchester 748 | <<locked>> | 82% | 40,306 psi | 86% | 2474 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 86% | 42,250 psi | 90% | 2500 fps | 98.1% |
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% | 32,808 psi | 70% | 2290 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,030 psi | 83% | 2425 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 31,024 psi | 66% | 2274 fps | 98.5% |
| Accurate 4350 | <<locked>> | 96% | 37,840 psi | 80% | 2474 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 36,941 psi | 78% | 2375 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 86% | 37,826 psi | 80% | 2375 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,943 psi | 83% | 2392 fps | 97.9% |
| Alliant AR-Comp | <<locked>> | 80% | 37,797 psi | 80% | 2402 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 32,314 psi | 69% | 2300 fps | 95.7% |
| Alliant Reloder-15 | <<locked>> | 84% | 37,333 psi | 79% | 2405 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 96% | 39,044 psi | 83% | 2484 fps | 95.1% |
| Alliant Reloder-17 | 32.9 gr | 88% | 34,272 psi | 73% | 2408 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 38,116 psi | 81% | 2418 fps | 95.1% |
| Bofors RP3 | <<locked>> | 82% | 31,560 psi | 67% | 2293 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,970 psi | 78% | 2405 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 80% | 37,173 psi | 79% | 2385 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 33,475 psi | 71% | 2336 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,286 psi | 71% | 2349 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,599 psi | 54% | 1414 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,853 psi | 76% | 2343 fps | 96.3% |
| IMR 3031 | <<locked>> | 80% | 35,824 psi | 76% | 2392 fps | 99.9% |
| IMR 4064 | <<locked>> | 82% | 35,273 psi | 75% | 2316 fps | 95% |
| IMR 4831 | <<locked>> | 98% | 39,233 psi | 83% | 2480 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 33,649 psi | 71% | 2336 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 38,943 psi | 83% | 2392 fps | 97.9% |
| Lovex D073.6 | <<locked>> | 80% | 35,230 psi | 75% | 2359 fps | 98.6% |
| Lovex S060 | <<locked>> | 80% | 37,797 psi | 80% | 2326 fps | 96.4% |
| Lovex S062 | <<locked>> | 80% | 32,576 psi | 69% | 2270 fps | 96.2% |
| Norma 201 | <<locked>> | 80% | 36,332 psi | 77% | 2339 fps | 97.4% |
| Norma 202 | <<locked>> | 80% | 36,129 psi | 77% | 2352 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 34,432 psi | 73% | 2346 fps | 95.3% |
| Ramshot Big Game | 31.9 gr | 84% | 36,390 psi | 77% | 2405 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,927 psi | 80% | 2405 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,831 psi | 55% | 1447 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 36,245 psi | 77% | 2444 fps | 95.2% |
| ReloadSwiss RS 60 | 29.9 gr | 80% | 28,224 psi | 60% | 2251 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 40,074 psi | 85% | 2392 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 80% | 34,577 psi | 73% | 2297 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 84% | 31,792 psi | 67% | 2293 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,230 psi | 75% | 2359 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 32,576 psi | 69% | 2270 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 35,317 psi | 75% | 2388 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,389 psi | 75% | 2343 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,189 psi | 81% | 2316 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,227 psi | 66% | 2188 fps | 98.9% |
| Somchem S335 | <<locked>> | 80% | 37,507 psi | 80% | 2316 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 36,463 psi | 77% | 2359 fps | 95.8% |
| Somchem S355 | <<locked>> | 84% | 33,083 psi | 70% | 2306 fps | 95.4% |
| Somchem S365 | <<locked>> | 92% | 30,472 psi | 65% | 2323 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 38,218 psi | 81% | 2320 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,431 psi | 71% | 2297 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,258 psi | 73% | 2293 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 29,399 psi | 62% | 2201 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 38,725 psi | 82% | 2385 fps | 98% |
| Vihtavuori N540 | <<locked>> | 80% | 32,808 psi | 70% | 2280 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 96% | 39,668 psi | 84% | 2480 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 34,403 psi | 73% | 2316 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 37,478 psi | 80% | 2421 fps | 98.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,708 psi | 74% | 2349 fps | 96.1% |
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 59 powders for 6.5 x 52 R K&S loaded with the .264 | 126gr | Lehigh Defense Controlled Chaos. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,589 fps; across all powders the maximum-charge window runs from 1,581 fps to 2,589 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 59 of the 59 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 73–90 %, leaving at least 10 % headroom. The 126.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, Hodgdon TrailBoss, IMR 4831 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-17, ReloadSwiss RS 60, Ramshot Big Game rank at the top here: for 6.5 x 52 R K&S with the .264 | 126gr | Lehigh Defense Controlled Chaos 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.