Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 123gr | Warner Tool Co. Flat Line 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 60, Alliant Reloder-17 and Hodgdon LEVERevolution.
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 2015 | <<locked>> | 82% | 41,162 psi | 87% | 2415 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 40,176 psi | 85% | 2457 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 42,395 psi | 90% | 2507 fps | 99.5% |
| Accurate 4064 | <<locked>> | 90% | 40,335 psi | 86% | 2487 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 40,059 psi | 85% | 2457 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 90% | 41,147 psi | 87% | 2461 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 84% | 42,308 psi | 90% | 2474 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 84% | 41,075 psi | 87% | 2484 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 42,525 psi | 90% | 2526 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 88% | 40,509 psi | 86% | 2490 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 96% | 42,264 psi | 90% | 2598 fps | 97.5% |
| Bofors RP3 | <<locked>> | 92% | 41,727 psi | 89% | 2526 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 82% | 42,090 psi | 89% | 2428 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 84% | 40,132 psi | 85% | 2487 fps | 98.4% |
| Hodgdon CFE223 | <<locked>> | 82% | 41,394 psi | 88% | 2556 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 84% | 40,350 psi | 86% | 2470 fps | 97.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,537 psi | 82% | 2461 fps | 96.4% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 41,220 psi | 87% | 2539 fps | 97.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,171 psi | 72% | 1588 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 41,510 psi | 88% | 2477 fps | 97.4% |
| IMR 3031 | <<locked>> | 86% | 41,626 psi | 88% | 2523 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 40,509 psi | 86% | 2441 fps | 96.1% |
| IMR 4895 | <<locked>> | 88% | 41,437 psi | 88% | 2520 fps | 97.1% |
| IMR 8208 XBR | <<locked>> | 84% | 42,308 psi | 90% | 2474 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 86% | 40,770 psi | 86% | 2490 fps | 99.3% |
| Lovex S060 | <<locked>> | 84% | 41,060 psi | 87% | 2408 fps | 96.8% |
| Lovex S062 | <<locked>> | 88% | 40,045 psi | 85% | 2451 fps | 97.9% |
| Norma 201 | <<locked>> | 86% | 42,003 psi | 89% | 2470 fps | 98.3% |
| Norma 202 | <<locked>> | 86% | 41,742 psi | 89% | 2480 fps | 99.7% |
| Norma 203B | <<locked>> | 90% | 42,366 psi | 90% | 2526 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 90% | 42,061 psi | 89% | 2539 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 84% | 41,191 psi | 87% | 2490 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,287 psi | 73% | 1624 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 42,061 psi | 89% | 2582 fps | 96.5% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 42,409 psi | 90% | 2618 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 82% | 40,756 psi | 86% | 2425 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 88% | 42,177 psi | 89% | 2467 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 94% | 41,626 psi | 88% | 2516 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 86% | 40,770 psi | 86% | 2490 fps | 99.3% |
| Shooters World Precision | <<locked>> | 88% | 40,045 psi | 85% | 2451 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 40,785 psi | 87% | 2520 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 41,234 psi | 87% | 2480 fps | 96.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 41,205 psi | 87% | 2388 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 40,611 psi | 86% | 2392 fps | 99.9% |
| Somchem S321 | <<locked>> | 82% | 42,554 psi | 90% | 2500 fps | 98.6% |
| Somchem S335 | <<locked>> | 84% | 40,654 psi | 86% | 2395 fps | 99.8% |
| Somchem S341 | <<locked>> | 86% | 42,612 psi | 90% | 2493 fps | 97% |
| Somchem S355 | <<locked>> | 92% | 40,350 psi | 86% | 2477 fps | 97.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,173 psi | 79% | 2500 fps | 97.6% |
| Vihtavuori N133 | <<locked>> | 84% | 41,191 psi | 87% | 2392 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 40,683 psi | 86% | 2454 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 42,250 psi | 90% | 2467 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 94% | 41,031 psi | 87% | 2464 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 84% | 42,177 psi | 89% | 2467 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 88% | 40,698 psi | 86% | 2457 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 39,885 psi | 85% | 2448 fps | 96.8% |
| Winchester 748 | <<locked>> | 84% | 41,031 psi | 87% | 2510 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 40,118 psi | 85% | 2480 fps | 97.2% |
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 2015 | <<locked>> | 80% | 38,537 psi | 82% | 2369 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 30,966 psi | 66% | 2274 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 36,840 psi | 78% | 2402 fps | 98.6% |
| Accurate 4064 | <<locked>> | 80% | 29,341 psi | 62% | 2251 fps | 97.6% |
| ADI AR 2206H | <<locked>> | 80% | 35,317 psi | 75% | 2359 fps | 95% |
| ADI AR 2208 | <<locked>> | 88% | 38,653 psi | 82% | 2411 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,246 psi | 79% | 2375 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 80% | 35,752 psi | 76% | 2388 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 32,764 psi | 70% | 2329 fps | 95.3% |
| Alliant Reloder-15 | <<locked>> | 86% | 38,029 psi | 81% | 2438 fps | 95.3% |
| Alliant Reloder-17 | 33.6 gr | 92% | 37,275 psi | 79% | 2493 fps | 95.8% |
| Bofors RP3 | <<locked>> | 84% | 32,024 psi | 68% | 2326 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,552 psi | 84% | 2382 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 34,940 psi | 74% | 2382 fps | 97.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 38,479 psi | 82% | 2497 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 35,491 psi | 75% | 2369 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 36,143 psi | 77% | 2411 fps | 95.5% |
| Hodgdon LEVERevolution | 29.8 gr | 82% | 33,866 psi | 72% | 2379 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,498 psi | 54% | 1421 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,243 psi | 73% | 2326 fps | 95.2% |
| IMR 3031 | <<locked>> | 80% | 34,243 psi | 73% | 2382 fps | 99.7% |
| IMR 4064 | <<locked>> | 86% | 38,014 psi | 81% | 2392 fps | 95.4% |
| IMR 4895 | <<locked>> | 84% | 36,463 psi | 77% | 2418 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 80% | 37,246 psi | 79% | 2375 fps | 97.1% |
| Lovex D073.6 | <<locked>> | 80% | 33,431 psi | 71% | 2343 fps | 97.8% |
| Lovex S060 | <<locked>> | 80% | 36,550 psi | 78% | 2316 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 31,299 psi | 66% | 2260 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 34,679 psi | 74% | 2323 fps | 96.4% |
| Norma 202 | <<locked>> | 80% | 34,693 psi | 74% | 2343 fps | 98.6% |
| Norma 203B | <<locked>> | 84% | 34,998 psi | 74% | 2375 fps | 95% |
| Ramshot Big Game | <<locked>> | 86% | 37,144 psi | 79% | 2438 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 35,998 psi | 76% | 2382 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,701 psi | 55% | 1457 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 39,407 psi | 84% | 2530 fps | 95.7% |
| ReloadSwiss RS 60 | 30.6 gr | 84% | 30,574 psi | 65% | 2336 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 38,232 psi | 81% | 2375 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 80% | 32,967 psi | 70% | 2277 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 88% | 34,476 psi | 73% | 2375 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,431 psi | 71% | 2343 fps | 97.8% |
| Shooters World Precision | <<locked>> | 80% | 31,299 psi | 66% | 2260 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 36,013 psi | 76% | 2421 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 36,376 psi | 77% | 2382 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,477 psi | 77% | 2300 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,733 psi | 63% | 2172 fps | 98.2% |
| Somchem S321 | <<locked>> | 80% | 39,610 psi | 84% | 2444 fps | 98% |
| Somchem S335 | <<locked>> | 80% | 35,868 psi | 76% | 2306 fps | 99.3% |
| Somchem S341 | <<locked>> | 82% | 37,202 psi | 79% | 2392 fps | 95.5% |
| Somchem S355 | <<locked>> | 86% | 33,620 psi | 71% | 2336 fps | 95% |
| Somchem S365 | <<locked>> | 96% | 32,764 psi | 70% | 2398 fps | 95.9% |
| Vihtavuori N133 | <<locked>> | 80% | 36,477 psi | 77% | 2306 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,575 psi | 67% | 2280 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 32,619 psi | 69% | 2280 fps | 98.4% |
| Vihtavuori N150 | <<locked>> | 84% | 29,849 psi | 63% | 2231 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 37,014 psi | 79% | 2369 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 80% | 31,328 psi | 66% | 2264 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 35,027 psi | 74% | 2343 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 35,781 psi | 76% | 2405 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 82% | 35,317 psi | 75% | 2379 fps | 95.8% |
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 | 123gr | Warner Tool Co. Flat Line. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,618 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,618 fps. Hodgdon Hybrid 100V 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 72–90 %, leaving at least 10 % headroom. The 123.0 gr projectile in 0.264" calls for a 1:7.5 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, 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, Hodgdon LEVERevolution rank at the top here: for 6.5 x 52 R K&S with the .264 | 123gr | Warner Tool Co. Flat Line 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.