Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 129gr | Hornady InterLock bullet and 53 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>> | 84% | 40,727 psi | 86% | 2425 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 40,770 psi | 86% | 2457 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 41,800 psi | 89% | 2539 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 82% | 42,119 psi | 89% | 2474 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 86% | 40,712 psi | 86% | 2431 fps | 97.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 41,017 psi | 87% | 2549 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 39,856 psi | 85% | 2448 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 84% | 40,437 psi | 86% | 2461 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 96% | 42,250 psi | 90% | 2552 fps | 97.1% |
| Alliant Reloder-17 | <<locked>> | 92% | 42,148 psi | 89% | 2585 fps | 98.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 41,278 psi | 88% | 2477 fps | 96.9% |
| Bofors RP3 | <<locked>> | 88% | 42,337 psi | 90% | 2507 fps | 99% |
| Hodgdon H380 | <<locked>> | 86% | 40,495 psi | 86% | 2454 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 82% | 42,453 psi | 90% | 2484 fps | 98.6% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 41,147 psi | 87% | 2497 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 40,944 psi | 87% | 2507 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,998 psi | 74% | 1594 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 40,857 psi | 87% | 2441 fps | 98.3% |
| IMR 3031 | <<locked>> | 82% | 41,771 psi | 89% | 2487 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 40,306 psi | 86% | 2418 fps | 97.3% |
| IMR 4831 | <<locked>> | 96% | 40,335 psi | 86% | 2497 fps | 96.6% |
| IMR 4895 | <<locked>> | 84% | 41,379 psi | 88% | 2490 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 82% | 40,930 psi | 87% | 2461 fps | 99.8% |
| Lovex S062 | <<locked>> | 86% | 42,525 psi | 90% | 2467 fps | 99.2% |
| Norma 201 | <<locked>> | 82% | 41,553 psi | 88% | 2434 fps | 99% |
| Norma 202 | <<locked>> | 82% | 41,437 psi | 88% | 2444 fps | 100% |
| Norma 203B | <<locked>> | 86% | 42,206 psi | 90% | 2497 fps | 98.2% |
| Norma URP | <<locked>> | 96% | 42,032 psi | 89% | 2539 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 86% | 42,119 psi | 89% | 2516 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,172 psi | 75% | 1631 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 41,989 psi | 89% | 2556 fps | 97.7% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 42,047 psi | 89% | 2592 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 41,510 psi | 88% | 2556 fps | 96.4% |
| Rottweil R 902 | <<locked>> | 84% | 42,061 psi | 89% | 2438 fps | 99% |
| Rottweil R 903 | <<locked>> | 90% | 42,192 psi | 90% | 2500 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 40,930 psi | 87% | 2461 fps | 99.8% |
| Shooters World Precision | <<locked>> | 86% | 42,525 psi | 90% | 2467 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 40,915 psi | 87% | 2500 fps | 97.8% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 42,424 psi | 90% | 2461 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 40,582 psi | 86% | 2441 fps | 97.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 40,292 psi | 85% | 2359 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 42,641 psi | 90% | 2402 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 42,076 psi | 89% | 2461 fps | 98% |
| Somchem S355 | <<locked>> | 88% | 40,567 psi | 86% | 2454 fps | 98.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,583 psi | 90% | 2592 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 84% | 41,060 psi | 87% | 2421 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 41,742 psi | 89% | 2428 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 41,278 psi | 88% | 2441 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 94% | 41,684 psi | 88% | 2493 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 84% | 40,408 psi | 86% | 2421 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 94% | 40,596 psi | 86% | 2493 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 42,018 psi | 89% | 2474 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 39,914 psi | 85% | 2448 fps | 98.2% |
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 2495 | <<locked>> | 80% | 35,607 psi | 76% | 2333 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 33,707 psi | 72% | 2320 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 36,419 psi | 77% | 2434 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 39,740 psi | 84% | 2428 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 35,882 psi | 76% | 2333 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 35,897 psi | 76% | 2434 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,982 psi | 70% | 2303 fps | 96.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,578 psi | 75% | 2362 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,304 psi | 79% | 2448 fps | 95.4% |
| Alliant Reloder-17 | 33.1 gr | 84% | 32,358 psi | 69% | 2359 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,609 psi | 82% | 2425 fps | 96.1% |
| Bofors RP3 | <<locked>> | 80% | 32,256 psi | 68% | 2300 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 84% | 38,145 psi | 81% | 2408 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 40,016 psi | 85% | 2438 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 31,879 psi | 68% | 2297 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,737 psi | 76% | 2398 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,802 psi | 55% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,508 psi | 82% | 2395 fps | 97.7% |
| IMR 3031 | <<locked>> | 80% | 39,160 psi | 83% | 2441 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,447 psi | 75% | 2316 fps | 95.8% |
| IMR 4831 | <<locked>> | 92% | 35,418 psi | 75% | 2395 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 36,405 psi | 77% | 2392 fps | 96.8% |
| Lovex D073.6 | <<locked>> | 80% | 38,189 psi | 81% | 2408 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 35,288 psi | 75% | 2323 fps | 97.7% |
| Norma 201 | <<locked>> | 80% | 38,812 psi | 82% | 2385 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 39,030 psi | 83% | 2398 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 34,998 psi | 74% | 2352 fps | 96.3% |
| Norma URP | <<locked>> | 92% | 36,999 psi | 78% | 2438 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 34,476 psi | 73% | 2359 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,078 psi | 55% | 1453 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 36,796 psi | 78% | 2448 fps | 96.2% |
| ReloadSwiss RS 60 | 31.6 gr | 80% | 30,443 psi | 65% | 2320 fps | 97.2% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 38,783 psi | 82% | 2503 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 37,028 psi | 79% | 2339 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 80% | 30,501 psi | 65% | 2251 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,189 psi | 81% | 2408 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 35,288 psi | 75% | 2323 fps | 97.7% |
| SNPE Vectan SP 11 | 31.8 gr | 82% | 33,518 psi | 71% | 2343 fps | 95.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,668 psi | 84% | 2408 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,290 psi | 81% | 2398 fps | 97.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,518 psi | 71% | 2231 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 39,900 psi | 85% | 2356 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,378 psi | 84% | 2411 fps | 97.4% |
| Somchem S355 | <<locked>> | 80% | 31,401 psi | 67% | 2257 fps | 95.5% |
| Somchem S365 | <<locked>> | 88% | 29,153 psi | 62% | 2287 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 36,230 psi | 77% | 2336 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,985 psi | 78% | 2339 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 29,936 psi | 64% | 2205 fps | 96.5% |
| Vihtavuori N160 | <<locked>> | 92% | 38,928 psi | 83% | 2441 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 35,331 psi | 75% | 2323 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 92% | 38,276 psi | 81% | 2448 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,489 psi | 69% | 2274 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,304 psi | 79% | 2395 fps | 97.5% |
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 53 powders for 6.5 x 52 R K&S loaded with the .264 | 129gr | Hornady InterLock. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,592 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,592 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 53 of the 53 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (325 MPa), the top charges use 74–90 %, leaving at least 10 % headroom. The 129.0 gr projectile in 0.264" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Somchem S365 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 | 129gr | Hornady InterLock 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.