Load Specifications
Load data in caliber 6.5 x 51 R Jap. Arisaka with .264 | 140gr | Berger Elite Hunter bullet and 55 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 62, Alliant Reloder-26 and ReloadSwiss RS 70.
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% | 36,187 psi | 85% | 2395 fps | 100% |
| Accurate 3100ᴾ | <<locked>> | 100% | 33,866 psi | 79% | 2444 fps | 96.6% |
| Accurate 4064 | <<locked>> | 84% | 36,825 psi | 86% | 2441 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 36,390 psi | 85% | 2510 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 82% | 36,027 psi | 84% | 2398 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 37,623 psi | 88% | 2464 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 82% | 37,797 psi | 88% | 2474 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,681 psi | 88% | 2539 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 88% | 37,231 psi | 87% | 2559 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,489 psi | 78% | 2487 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 37,318 psi | 87% | 2638 fps | 98.9% |
| Bofors RP3 | <<locked>> | 84% | 36,680 psi | 86% | 2464 fps | 99.9% |
| Bofors RP7 | <<locked>> | 88% | 38,290 psi | 89% | 2444 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 84% | 38,029 psi | 89% | 2474 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 90% | 37,913 psi | 89% | 2526 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 36,477 psi | 85% | 2474 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,621 psi | 81% | 1594 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 37,782 psi | 88% | 2425 fps | 99.3% |
| IMR 4350 | <<locked>> | 92% | 38,638 psi | 90% | 2474 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 86% | 38,189 psi | 89% | 2438 fps | 96.3% |
| IMR 4831 | <<locked>> | 94% | 38,450 psi | 90% | 2526 fps | 99.1% |
| Lovex S062 | <<locked>> | 82% | 37,043 psi | 87% | 2421 fps | 99.9% |
| Lovex S065 | <<locked>> | 88% | 36,608 psi | 86% | 2421 fps | 97.5% |
| Lovex S070 | <<locked>> | 90% | 36,825 psi | 86% | 2448 fps | 96.5% |
| Norma 203B | <<locked>> | 82% | 37,101 psi | 87% | 2461 fps | 99.5% |
| Norma MRPᴾ | <<locked>> | 100% | 37,782 psi | 88% | 2602 fps | 96.4% |
| Norma URP | <<locked>> | 92% | 37,753 psi | 88% | 2523 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 82% | 37,231 psi | 87% | 2487 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 92% | 37,028 psi | 87% | 2516 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,563 psi | 81% | 1627 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 36,260 psi | 85% | 2411 fps | 96.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 37,507 psi | 88% | 2569 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 36,898 psi | 86% | 2539 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 37,724 psi | 88% | 2566 fps | 98.4% |
| Rottweil R 902 | <<locked>> | 82% | 38,551 psi | 90% | 2431 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 36,608 psi | 86% | 2454 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 88% | 38,290 psi | 89% | 2444 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 88% | 36,608 psi | 86% | 2421 fps | 97.5% |
| Shooters World Precision | <<locked>> | 82% | 37,043 psi | 87% | 2421 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 90% | 36,825 psi | 86% | 2448 fps | 96.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 36,042 psi | 84% | 2470 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 38,130 psi | 89% | 2359 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 36,071 psi | 84% | 2372 fps | 95.9% |
| Somchem S355 | <<locked>> | 86% | 38,043 psi | 89% | 2467 fps | 99.8% |
| Somchem S365 | <<locked>> | 96% | 38,305 psi | 90% | 2575 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 37,782 psi | 88% | 2503 fps | 95.9% |
| Vihtavuori N135 | <<locked>> | 82% | 38,595 psi | 90% | 2411 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 36,245 psi | 85% | 2405 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 37,057 psi | 87% | 2470 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 82% | 37,768 psi | 88% | 2421 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 38,711 psi | 90% | 2523 fps | 98.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 35,969 psi | 84% | 2549 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 37,463 psi | 88% | 2457 fps | 99.8% |
| Winchester 760 | <<locked>> | 90% | 37,913 psi | 89% | 2526 fps | 96.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 29,457 psi | 69% | 2484 fps | 99.3% |
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% | 33,344 psi | 78% | 2346 fps | 100% |
| Accurate 3100 | <<locked>> | 98% | 31,198 psi | 73% | 2388 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 31,749 psi | 74% | 2346 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 26,687 psi | 62% | 2290 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 33,765 psi | 79% | 2352 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,648 psi | 76% | 2365 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,404 psi | 83% | 2425 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 26,876 psi | 63% | 2270 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 27,978 psi | 65% | 2339 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 90% | 23,888 psi | 56% | 2224 fps | 95.7% |
| Alliant Reloder-26 | 37.4 gr | 92% | 27,369 psi | 64% | 2382 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 31,343 psi | 73% | 2356 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 35,911 psi | 84% | 2395 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 32,677 psi | 76% | 2365 fps | 97.2% |
| Hodgdon H414 | <<locked>> | 88% | 35,230 psi | 82% | 2470 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 22,408 psi | 52% | 2119 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,295 psi | 59% | 1417 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,375 psi | 83% | 2379 fps | 98.9% |
| IMR 4350 | <<locked>> | 90% | 36,289 psi | 85% | 2425 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 35,549 psi | 83% | 2382 fps | 95.5% |
| IMR 4831 | <<locked>> | 84% | 26,600 psi | 62% | 2264 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 34,664 psi | 81% | 2375 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 29,878 psi | 70% | 2274 fps | 95.2% |
| Lovex S070 | <<locked>> | 88% | 34,519 psi | 81% | 2398 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 34,751 psi | 81% | 2415 fps | 99.2% |
| Norma MRP | <<locked>> | 98% | 35,114 psi | 82% | 2543 fps | 95.5% |
| Norma URP | <<locked>> | 82% | 26,295 psi | 61% | 2257 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 34,577 psi | 81% | 2431 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 32,068 psi | 75% | 2405 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,309 psi | 59% | 1453 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 33,707 psi | 79% | 2359 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 30,052 psi | 70% | 2402 fps | 99.9% |
| ReloadSwiss RS 62 | 33.3 gr | 84% | 27,238 psi | 64% | 2316 fps | 95.5% |
| ReloadSwiss RS 70 | 34.7 gr | 86% | 30,385 psi | 71% | 2388 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 36,114 psi | 84% | 2385 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 29,472 psi | 69% | 2303 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 86% | 35,911 psi | 84% | 2395 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 82% | 29,878 psi | 70% | 2274 fps | 95.2% |
| Shooters World Precision | <<locked>> | 80% | 34,664 psi | 81% | 2375 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 34,519 psi | 81% | 2398 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,357 psi | 73% | 2369 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,040 psi | 77% | 2267 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 33,359 psi | 78% | 2316 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 30,574 psi | 71% | 2313 fps | 98.6% |
| Somchem S365 | <<locked>> | 80% | 21,393 psi | 50% | 2146 fps | 96.2% |
| Somchem S385 | <<locked>> | 96% | 35,012 psi | 82% | 2451 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 35,665 psi | 83% | 2362 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 29,312 psi | 69% | 2260 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 82% | 27,630 psi | 65% | 2260 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 35,085 psi | 82% | 2372 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 26,847 psi | 63% | 2260 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 90% | 25,063 psi | 59% | 2287 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 26,063 psi | 61% | 2195 fps | 97.1% |
| Winchester 760 | <<locked>> | 88% | 35,230 psi | 82% | 2470 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 94% | 23,888 psi | 56% | 2297 fps | 96.3% |
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 55 powders for 6.5 x 51 R Jap. Arisaka loaded with the .264 | 140gr | Berger Elite Hunter. Alliant Reloder-26 delivers the highest muzzle velocity at 2,638 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,638 fps. Accurate 3100 gives the best case fill at 100 %, and 55 of the 55 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (295 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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 62, Alliant Reloder-26, ReloadSwiss RS 70 rank at the top here: for 6.5 x 51 R Jap. Arisaka with the .264 | 140gr | Berger Elite Hunter 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.