Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 128gr | MRR Green Long Range bullet and 60 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 SNPE Vectan SP 11.
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% | 40,306 psi | 86% | 2415 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 42,279 psi | 90% | 2464 fps | 99.7% |
| Accurate 4064 | <<locked>> | 88% | 40,437 psi | 86% | 2448 fps | 99.9% |
| Accurate 4350 | <<locked>> | 98% | 41,321 psi | 88% | 2520 fps | 96.3% |
| ADI AR 2206H | <<locked>> | 84% | 42,438 psi | 90% | 2467 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 88% | 40,799 psi | 87% | 2418 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 42,018 psi | 89% | 2431 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 82% | 40,756 psi | 86% | 2428 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 41,017 psi | 87% | 2533 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 42,351 psi | 90% | 2484 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 86% | 40,350 psi | 86% | 2448 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 98% | 42,119 psi | 89% | 2533 fps | 96.4% |
| Alliant Reloder-17 | <<locked>> | 94% | 42,148 psi | 89% | 2566 fps | 98.1% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 41,481 psi | 88% | 2467 fps | 96.4% |
| Bofors RP3 | <<locked>> | 90% | 42,003 psi | 89% | 2490 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 84% | 42,598 psi | 90% | 2493 fps | 99.2% |
| Hodgdon H4895 | <<locked>> | 82% | 40,161 psi | 85% | 2428 fps | 97.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,669 psi | 86% | 2470 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 41,017 psi | 87% | 2497 fps | 98.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,606 psi | 73% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 41,234 psi | 87% | 2434 fps | 97.9% |
| IMR 3031 | <<locked>> | 84% | 41,655 psi | 88% | 2480 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 40,234 psi | 85% | 2402 fps | 96.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,569 psi | 90% | 2526 fps | 96.7% |
| IMR 4895 | <<locked>> | 86% | 41,307 psi | 88% | 2477 fps | 97.6% |
| IMR 8208 XBR | <<locked>> | 82% | 42,018 psi | 89% | 2431 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 84% | 40,741 psi | 86% | 2448 fps | 99.6% |
| Lovex S060 | <<locked>> | 82% | 40,712 psi | 86% | 2365 fps | 97.3% |
| Lovex S062 | <<locked>> | 88% | 42,496 psi | 90% | 2454 fps | 98.9% |
| Norma 201 | <<locked>> | 84% | 41,365 psi | 88% | 2421 fps | 98.6% |
| Norma 202 | <<locked>> | 84% | 41,611 psi | 88% | 2438 fps | 99.9% |
| Norma 203B | <<locked>> | 88% | 42,192 psi | 90% | 2487 fps | 97.8% |
| Norma URP | <<locked>> | 98% | 41,814 psi | 89% | 2520 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 88% | 42,105 psi | 89% | 2503 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 40,988 psi | 87% | 2448 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,780 psi | 74% | 1608 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 41,916 psi | 89% | 2543 fps | 97.2% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 41,945 psi | 89% | 2572 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 86% | 41,945 psi | 89% | 2425 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 92% | 41,916 psi | 89% | 2484 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 40,741 psi | 86% | 2448 fps | 99.6% |
| Shooters World Precision | <<locked>> | 88% | 42,496 psi | 90% | 2454 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 40,828 psi | 87% | 2487 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 40,959 psi | 87% | 2438 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 40,872 psi | 87% | 2346 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 40,306 psi | 86% | 2349 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 42,583 psi | 90% | 2388 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 42,279 psi | 90% | 2451 fps | 97.6% |
| Somchem S355 | <<locked>> | 90% | 40,219 psi | 85% | 2438 fps | 97.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,639 psi | 84% | 2523 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 82% | 40,930 psi | 87% | 2346 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 40,654 psi | 86% | 2411 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 42,032 psi | 89% | 2425 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 41,133 psi | 87% | 2428 fps | 99% |
| Vihtavuori N160 | <<locked>> | 96% | 41,481 psi | 88% | 2474 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 82% | 41,887 psi | 89% | 2425 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 86% | 40,466 psi | 86% | 2415 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 42,409 psi | 90% | 2464 fps | 98.1% |
| Winchester 748 | <<locked>> | 82% | 40,538 psi | 86% | 2461 fps | 99.1% |
| Winchester StaBALL Match | <<locked>> | 84% | 39,972 psi | 85% | 2438 fps | 97.8% |
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% | 33,373 psi | 71% | 2283 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,349 psi | 83% | 2411 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 31,575 psi | 67% | 2267 fps | 98.7% |
| Accurate 4350 | <<locked>> | 96% | 38,595 psi | 82% | 2470 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 37,492 psi | 80% | 2369 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 84% | 36,042 psi | 76% | 2323 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,479 psi | 84% | 2385 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 80% | 38,043 psi | 81% | 2385 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 38,276 psi | 81% | 2474 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,806 psi | 65% | 2244 fps | 95.2% |
| Alliant Reloder-15 | <<locked>> | 82% | 35,621 psi | 76% | 2349 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 96% | 39,668 psi | 84% | 2480 fps | 95.6% |
| Alliant Reloder-17 | 32.8 gr | 88% | 34,519 psi | 73% | 2398 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 38,711 psi | 82% | 2411 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 30,110 psi | 64% | 2241 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,231 psi | 79% | 2392 fps | 98.3% |
| Hodgdon H4895 | <<locked>> | 80% | 37,739 psi | 80% | 2382 fps | 97.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 34,011 psi | 72% | 2333 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,489 psi | 71% | 2336 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,686 psi | 54% | 1401 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,347 psi | 77% | 2336 fps | 96.7% |
| IMR 3031 | <<locked>> | 80% | 36,419 psi | 77% | 2385 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 35,491 psi | 75% | 2303 fps | 95.3% |
| IMR 4831 | <<locked>> | 96% | 37,188 psi | 79% | 2421 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 34,171 psi | 72% | 2329 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 39,479 psi | 84% | 2385 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 80% | 35,505 psi | 75% | 2346 fps | 98.8% |
| Lovex S060 | <<locked>> | 80% | 38,261 psi | 81% | 2320 fps | 96.7% |
| Lovex S062 | <<locked>> | 80% | 33,054 psi | 70% | 2267 fps | 96.6% |
| Norma 201 | <<locked>> | 80% | 36,854 psi | 78% | 2333 fps | 97.7% |
| Norma 202 | <<locked>> | 80% | 36,651 psi | 78% | 2343 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 34,969 psi | 74% | 2339 fps | 95.7% |
| Norma URP | <<locked>> | 96% | 39,262 psi | 83% | 2470 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 82% | 34,461 psi | 73% | 2346 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,189 psi | 81% | 2392 fps | 96.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,947 psi | 55% | 1437 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 36,521 psi | 77% | 2431 fps | 95.5% |
| ReloadSwiss RS 60 | 29.9 gr | 80% | 28,631 psi | 61% | 2251 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 34,766 psi | 74% | 2280 fps | 97% |
| Rottweil R 903 | <<locked>> | 84% | 32,343 psi | 69% | 2287 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,505 psi | 75% | 2346 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 33,054 psi | 70% | 2267 fps | 96.6% |
| SNPE Vectan SP 11 | 31.6 gr | 86% | 35,839 psi | 76% | 2382 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,955 psi | 76% | 2336 fps | 95.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,305 psi | 81% | 2300 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,401 psi | 67% | 2175 fps | 99.1% |
| Somchem S335 | <<locked>> | 80% | 38,014 psi | 81% | 2310 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 36,724 psi | 78% | 2346 fps | 96.1% |
| Somchem S355 | <<locked>> | 84% | 33,330 psi | 71% | 2293 fps | 95.7% |
| Somchem S365 | <<locked>> | 90% | 29,124 psi | 62% | 2270 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 38,392 psi | 81% | 2303 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,663 psi | 71% | 2280 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,766 psi | 74% | 2287 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 27,992 psi | 59% | 2149 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 94% | 38,972 psi | 83% | 2428 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 39,305 psi | 83% | 2379 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 80% | 33,301 psi | 71% | 2270 fps | 98.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 34,925 psi | 74% | 2313 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 38,058 psi | 81% | 2415 fps | 98.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,940 psi | 74% | 2336 fps | 96.4% |
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 60 powders for 6.5 x 52 R K&S loaded with the .264 | 128gr | MRR Green Long Range. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,572 fps; across all powders the maximum-charge window runs from 1,572 fps to 2,572 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 60 of the 60 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 128.0 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. ReloadSwiss RS 60, Alliant Reloder-17, SNPE Vectan SP 11 rank at the top here: for 6.5 x 52 R K&S with the .264 | 128gr | MRR Green Long Range 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.