Load Specifications
Load data in caliber 6.5 x 51 R Jap. Arisaka with .264 | 140gr | Hornady InterLock bullet and 48 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and ReloadSwiss RS 62.
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: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 37,768 psi | 88% | 2431 fps | 100% |
| Accurate 3100ᴾ | <<locked>> | 100% | 35,795 psi | 84% | 2497 fps | 97.5% |
| Accurate 4064 | <<locked>> | 84% | 38,711 psi | 90% | 2487 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 38,363 psi | 90% | 2559 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 82% | 37,623 psi | 88% | 2448 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 36,579 psi | 85% | 2457 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,709 psi | 86% | 2536 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 86% | 36,216 psi | 85% | 2552 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,128 psi | 82% | 2539 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,434 psi | 85% | 2638 fps | 98.9% |
| Bofors RP3 | <<locked>> | 84% | 38,014 psi | 89% | 2500 fps | 100% |
| Bofors RP7 | <<locked>> | 86% | 37,014 psi | 87% | 2434 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 82% | 36,840 psi | 86% | 2467 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 88% | 36,898 psi | 86% | 2523 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 38,218 psi | 89% | 2520 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,534 psi | 81% | 1608 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 37,565 psi | 88% | 2467 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 84% | 36,970 psi | 86% | 2428 fps | 96.3% |
| IMR 4831 | <<locked>> | 92% | 37,420 psi | 87% | 2520 fps | 99.1% |
| Lovex S062 | <<locked>> | 82% | 38,435 psi | 90% | 2461 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 38,058 psi | 89% | 2467 fps | 98% |
| Lovex S070 | <<locked>> | 90% | 38,551 psi | 90% | 2497 fps | 97.2% |
| Norma MRP | <<locked>> | 98% | 36,985 psi | 86% | 2602 fps | 96.5% |
| Norma URP | <<locked>> | 90% | 36,811 psi | 86% | 2520 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 92% | 38,537 psi | 90% | 2562 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,867 psi | 81% | 1647 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 37,681 psi | 88% | 2457 fps | 97.3% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 36,201 psi | 85% | 2556 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 35,853 psi | 84% | 2533 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 36,463 psi | 85% | 2556 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 86% | 38,305 psi | 90% | 2500 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 86% | 37,014 psi | 87% | 2434 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,058 psi | 89% | 2467 fps | 98% |
| Shooters World Precision | <<locked>> | 82% | 38,435 psi | 90% | 2461 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 38,551 psi | 90% | 2497 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 37,913 psi | 89% | 2520 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 36,695 psi | 86% | 2346 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 37,507 psi | 88% | 2415 fps | 96.6% |
| Somchem S355 | <<locked>> | 84% | 36,927 psi | 86% | 2461 fps | 99.8% |
| Somchem S365 | <<locked>> | 94% | 37,188 psi | 87% | 2569 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 36,898 psi | 86% | 2503 fps | 96% |
| Vihtavuori N150 | <<locked>> | 86% | 37,797 psi | 88% | 2444 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 38,508 psi | 90% | 2513 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 90% | 37,652 psi | 88% | 2520 fps | 98.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,116 psi | 89% | 2602 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 36,230 psi | 85% | 2451 fps | 99.8% |
| Winchester 760 | <<locked>> | 88% | 36,898 psi | 86% | 2523 fps | 96.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 30,748 psi | 72% | 2543 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 31"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 34,940 psi | 82% | 2385 fps | 100% |
| Accurate 3100 | <<locked>> | 96% | 30,560 psi | 71% | 2385 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 33,272 psi | 78% | 2385 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 26,005 psi | 61% | 2283 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 35,041 psi | 82% | 2392 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,011 psi | 79% | 2405 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 26,179 psi | 61% | 2267 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 29,211 psi | 68% | 2388 fps | 98.6% |
| Alliant Reloder-23 | <<locked>> | 88% | 23,366 psi | 55% | 2221 fps | 95.7% |
| Alliant Reloder-26 | 38 gr | 90% | 26,774 psi | 63% | 2382 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 32,996 psi | 77% | 2402 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 34,780 psi | 81% | 2388 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 34,243 psi | 80% | 2411 fps | 97.9% |
| Hodgdon H414 | <<locked>> | 86% | 34,374 psi | 80% | 2467 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 23,395 psi | 55% | 2165 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,527 psi | 60% | 1437 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 35,360 psi | 83% | 2421 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 34,490 psi | 81% | 2375 fps | 95.4% |
| IMR 4831 | <<locked>> | 82% | 25,933 psi | 61% | 2257 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 36,071 psi | 84% | 2418 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 28,848 psi | 67% | 2260 fps | 95.1% |
| Lovex S070 | <<locked>> | 86% | 33,446 psi | 78% | 2392 fps | 95.7% |
| Norma MRP | <<locked>> | 96% | 34,142 psi | 80% | 2536 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 25,643 psi | 60% | 2251 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 86% | 31,270 psi | 73% | 2402 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,556 psi | 60% | 1470 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 35,143 psi | 82% | 2405 fps | 96.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 31,372 psi | 73% | 2451 fps | 100% |
| ReloadSwiss RS 62 | 33.7 gr | 82% | 26,440 psi | 62% | 2306 fps | 95.4% |
| ReloadSwiss RS 70 | 35.1 gr | 84% | 29,298 psi | 68% | 2379 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 30,792 psi | 72% | 2349 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 84% | 34,780 psi | 81% | 2388 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 28,848 psi | 67% | 2260 fps | 95.1% |
| Shooters World Precision | <<locked>> | 80% | 36,071 psi | 84% | 2418 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 33,446 psi | 78% | 2392 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,532 psi | 76% | 2408 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,403 psi | 80% | 2306 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 32,605 psi | 76% | 2316 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 31,894 psi | 75% | 2356 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 22,321 psi | 52% | 2192 fps | 97.1% |
| Somchem S385 | <<locked>> | 94% | 34,287 psi | 80% | 2451 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 30,545 psi | 71% | 2300 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 26,890 psi | 63% | 2254 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 26,150 psi | 61% | 2254 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 88% | 24,613 psi | 58% | 2283 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 27,079 psi | 63% | 2238 fps | 97.9% |
| Winchester 760 | <<locked>> | 86% | 34,374 psi | 80% | 2467 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 92% | 23,163 psi | 54% | 2287 fps | 96.2% |
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 48 powders for 6.5 x 51 R Jap. Arisaka loaded with the .264 | 140gr | Hornady InterLock. Alliant Reloder-26 delivers the highest muzzle velocity at 2,638 fps; across all powders the maximum-charge window runs from 1,608 fps to 2,638 fps. Accurate 3100 gives the best case fill at 100 %, and 48 of the 48 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (295 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, 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. Alliant Reloder-26, ReloadSwiss RS 70, ReloadSwiss RS 62 rank at the top here: for 6.5 x 51 R Jap. Arisaka with the .264 | 140gr | 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.