Load Specifications
Load data in caliber 6.5 x 52 R K&S with .264 | 128gr | TWENTY-NINE ERTP 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 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 2015 | <<locked>> | 82% | 42,221 psi | 90% | 2382 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 41,974 psi | 89% | 2434 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 40,988 psi | 87% | 2431 fps | 99.5% |
| Accurate 4064 | <<locked>> | 90% | 42,047 psi | 89% | 2467 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,598 psi | 90% | 2536 fps | 96.4% |
| ADI AR 2206H | <<locked>> | 84% | 41,539 psi | 88% | 2438 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 90% | 42,235 psi | 90% | 2434 fps | 96.8% |
| ADI Benchmark 8208 | <<locked>> | 82% | 41,075 psi | 87% | 2405 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 84% | 42,438 psi | 90% | 2451 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 42,641 psi | 90% | 2552 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 41,104 psi | 87% | 2451 fps | 98.2% |
| Alliant Reloder-15 | <<locked>> | 88% | 42,105 psi | 89% | 2470 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 94% | 40,886 psi | 87% | 2526 fps | 97.6% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 40,364 psi | 86% | 2434 fps | 95.9% |
| Bofors RP3 | <<locked>> | 90% | 40,756 psi | 86% | 2461 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 84% | 41,713 psi | 88% | 2467 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 82% | 42,598 psi | 90% | 2533 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 84% | 41,800 psi | 89% | 2451 fps | 98% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,697 psi | 84% | 2441 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 42,482 psi | 90% | 2513 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,447 psi | 73% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 40,350 psi | 86% | 2408 fps | 97.6% |
| IMR 3031 | <<locked>> | 84% | 40,524 psi | 86% | 2451 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 41,989 psi | 89% | 2425 fps | 97% |
| IMR 4831ᴾ | <<locked>> | 100% | 41,162 psi | 87% | 2490 fps | 96.1% |
| IMR 4895 | <<locked>> | 86% | 40,422 psi | 86% | 2451 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 82% | 41,075 psi | 87% | 2405 fps | 98.4% |
| Lovex D073.6 | <<locked>> | 86% | 42,496 psi | 90% | 2470 fps | 99.7% |
| Lovex S060 | <<locked>> | 84% | 42,380 psi | 90% | 2388 fps | 97.6% |
| Lovex S062 | <<locked>> | 88% | 41,249 psi | 88% | 2425 fps | 98.5% |
| Norma 201 | <<locked>> | 84% | 40,451 psi | 86% | 2395 fps | 98.3% |
| Norma 202 | <<locked>> | 84% | 40,625 psi | 86% | 2411 fps | 99.7% |
| Norma 203B | <<locked>> | 88% | 41,379 psi | 88% | 2461 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 88% | 40,654 psi | 86% | 2464 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 39,769 psi | 84% | 2415 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,621 psi | 73% | 1594 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 40,669 psi | 86% | 2507 fps | 96.6% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 40,973 psi | 87% | 2543 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 82% | 41,771 psi | 89% | 2395 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 86% | 41,031 psi | 87% | 2398 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 92% | 40,640 psi | 86% | 2451 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 86% | 42,496 psi | 90% | 2470 fps | 99.7% |
| Shooters World Precision | <<locked>> | 88% | 41,249 psi | 88% | 2425 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 42,366 psi | 90% | 2503 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 42,395 psi | 90% | 2454 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 42,612 psi | 90% | 2365 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 42,090 psi | 89% | 2369 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 41,698 psi | 88% | 2365 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 41,162 psi | 87% | 2421 fps | 97.2% |
| Somchem S355 | <<locked>> | 92% | 41,582 psi | 88% | 2454 fps | 97.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,392 psi | 81% | 2484 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 84% | 42,598 psi | 90% | 2365 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 42,366 psi | 90% | 2431 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 40,785 psi | 87% | 2392 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 92% | 40,030 psi | 85% | 2402 fps | 98.7% |
| Vihtavuori N530 | <<locked>> | 82% | 40,988 psi | 87% | 2398 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 88% | 41,887 psi | 89% | 2431 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 41,350 psi | 88% | 2431 fps | 97.7% |
| Winchester 748 | <<locked>> | 84% | 42,293 psi | 90% | 2484 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 86% | 41,727 psi | 89% | 2461 fps | 98% |
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% | 39,943 psi | 85% | 2343 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,358 psi | 69% | 2257 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 38,377 psi | 81% | 2385 fps | 99.2% |
| Accurate 4064 | <<locked>> | 80% | 30,618 psi | 65% | 2238 fps | 98.4% |
| Accurate 4350 | <<locked>> | 98% | 39,697 psi | 84% | 2484 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 36,564 psi | 78% | 2339 fps | 96% |
| ADI AR 2208 | <<locked>> | 86% | 37,521 psi | 80% | 2343 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,566 psi | 82% | 2356 fps | 97.8% |
| Alliant AR-Comp | <<locked>> | 80% | 37,275 psi | 79% | 2365 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 40,045 psi | 85% | 2497 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 31,937 psi | 68% | 2264 fps | 95.5% |
| Alliant Reloder-15 | <<locked>> | 84% | 37,086 psi | 79% | 2372 fps | 95.6% |
| Alliant Reloder-17 | 32 gr | 88% | 33,649 psi | 71% | 2365 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 37,623 psi | 80% | 2379 fps | 95% |
| Bofors RP3 | <<locked>> | 82% | 31,256 psi | 66% | 2260 fps | 95.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,390 psi | 77% | 2365 fps | 97.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,987 psi | 85% | 2480 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 80% | 36,825 psi | 78% | 2352 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 34,954 psi | 74% | 2343 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,735 psi | 69% | 2310 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,701 psi | 55% | 1394 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,491 psi | 75% | 2310 fps | 96.2% |
| IMR 3031 | <<locked>> | 80% | 35,317 psi | 75% | 2356 fps | 99.9% |
| IMR 4064 | <<locked>> | 84% | 36,956 psi | 78% | 2326 fps | 95.6% |
| IMR 4831 | <<locked>> | 98% | 38,580 psi | 82% | 2441 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 33,315 psi | 71% | 2300 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 38,566 psi | 82% | 2356 fps | 97.8% |
| Lovex D073.6 | <<locked>> | 80% | 34,534 psi | 73% | 2320 fps | 98.4% |
| Lovex S060 | <<locked>> | 80% | 37,362 psi | 79% | 2290 fps | 96.2% |
| Lovex S062 | <<locked>> | 80% | 32,184 psi | 68% | 2238 fps | 96.1% |
| Norma 201 | <<locked>> | 80% | 35,955 psi | 76% | 2303 fps | 97.3% |
| Norma 202 | <<locked>> | 80% | 35,679 psi | 76% | 2316 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 34,113 psi | 72% | 2313 fps | 95.2% |
| Ramshot Big Game | 31.1 gr | 84% | 35,911 psi | 76% | 2369 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,362 psi | 79% | 2365 fps | 96.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,599 psi | 54% | 1421 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 35,650 psi | 76% | 2402 fps | 95% |
| ReloadSwiss RS 60 | 29.9 gr | 82% | 29,791 psi | 63% | 2274 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 39,552 psi | 84% | 2356 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 80% | 34,156 psi | 72% | 2257 fps | 96.7% |
| Rottweil R 903 | <<locked>> | 84% | 31,183 psi | 66% | 2254 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,534 psi | 73% | 2320 fps | 98.4% |
| Shooters World Precision | <<locked>> | 80% | 32,184 psi | 68% | 2238 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 34,867 psi | 74% | 2349 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,114 psi | 74% | 2310 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,695 psi | 80% | 2280 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,835 psi | 65% | 2156 fps | 98.8% |
| Somchem S335 | <<locked>> | 80% | 37,101 psi | 79% | 2283 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 35,926 psi | 76% | 2320 fps | 95.6% |
| Somchem S355 | <<locked>> | 84% | 32,460 psi | 69% | 2264 fps | 95.2% |
| Somchem S365 | <<locked>> | 92% | 30,110 psi | 64% | 2287 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 37,753 psi | 80% | 2283 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,924 psi | 70% | 2260 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 33,881 psi | 72% | 2260 fps | 99% |
| Vihtavuori N150 | <<locked>> | 82% | 29,095 psi | 62% | 2169 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 38,392 psi | 81% | 2352 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 80% | 32,503 psi | 69% | 2247 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 33,895 psi | 72% | 2280 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 37,144 psi | 79% | 2385 fps | 98.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,142 psi | 72% | 2310 fps | 95.9% |
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 | TWENTY-NINE ERTP. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,552 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,552 fps. Accurate 4350 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 0.265" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Hodgdon Hybrid 100V, Hodgdon TrailBoss 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, Ramshot Big Game rank at the top here: for 6.5 x 52 R K&S with the .264 | 128gr | TWENTY-NINE ERTP 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.