Load Specifications
Load data in caliber 7.7 x 58 mm Arisaka with .312 | 160gr | Peregrine VLR-4 bullet and 50 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Hodgdon LEVERevolution and IMR 3031.
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: 25.9"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 38,595 psi | 86% | 2484 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 39,131 psi | 87% | 2523 fps | 98.9% |
| Accurate 2495 | <<locked>> | 92% | 39,233 psi | 87% | 2562 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 39,479 psi | 88% | 2569 fps | 98.7% |
| Accurate 4064 | <<locked>> | 94% | 39,247 psi | 87% | 2589 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 88% | 40,466 psi | 90% | 2572 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 86% | 40,118 psi | 89% | 2539 fps | 97.3% |
| Alliant AR-Comp | <<locked>> | 86% | 38,101 psi | 85% | 2552 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 40,422 psi | 90% | 2625 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 39,682 psi | 88% | 2585 fps | 96.9% |
| Alliant Reloder-17 | <<locked>> | 98% | 40,059 psi | 89% | 2651 fps | 96% |
| Bofors RP3 | <<locked>> | 94% | 38,624 psi | 86% | 2582 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 40,219 psi | 89% | 2497 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 88% | 40,190 psi | 89% | 2602 fps | 98% |
| Hodgdon H322 | <<locked>> | 82% | 40,219 psi | 89% | 2559 fps | 99.7% |
| Hodgdon H4895 | <<locked>> | 86% | 37,971 psi | 84% | 2533 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 38,856 psi | 86% | 2598 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,301 psi | 74% | 1637 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 39,349 psi | 88% | 2539 fps | 96.2% |
| IMR 3031 | <<locked>> | 88% | 38,870 psi | 86% | 2592 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 40,118 psi | 89% | 2539 fps | 97.3% |
| Lovex D073.5 | <<locked>> | 82% | 38,986 psi | 87% | 2523 fps | 97.9% |
| Lovex D073.6 | <<locked>> | 90% | 40,669 psi | 90% | 2602 fps | 98.9% |
| Lovex S062 | <<locked>> | 92% | 39,943 psi | 89% | 2556 fps | 97.4% |
| Norma 201 | <<locked>> | 88% | 39,363 psi | 88% | 2530 fps | 97.2% |
| Norma 202 | <<locked>> | 88% | 39,378 psi | 88% | 2549 fps | 99.1% |
| Norma 203B | <<locked>> | 92% | 39,639 psi | 88% | 2585 fps | 95.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,344 psi | 74% | 1673 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 39,871 psi | 89% | 2533 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 40,103 psi | 89% | 2671 fps | 98.5% |
| Rottweil R 901 | <<locked>> | 86% | 40,408 psi | 90% | 2533 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 90% | 39,610 psi | 88% | 2526 fps | 97.2% |
| Rottweil R 903 | <<locked>> | 96% | 38,537 psi | 86% | 2569 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 40,669 psi | 90% | 2602 fps | 98.9% |
| Shooters World Precision | <<locked>> | 92% | 39,943 psi | 89% | 2556 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 39,436 psi | 88% | 2464 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 38,421 psi | 85% | 2457 fps | 99.5% |
| Somchem S321 | <<locked>> | 84% | 40,306 psi | 90% | 2569 fps | 97.7% |
| Somchem S335 | <<locked>> | 86% | 38,479 psi | 86% | 2464 fps | 99.4% |
| Somchem S355 | <<locked>> | 96% | 39,958 psi | 89% | 2582 fps | 96.5% |
| Vihtavuori N130 | <<locked>> | 82% | 39,537 psi | 88% | 2457 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 39,305 psi | 87% | 2467 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 40,524 psi | 90% | 2569 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 39,566 psi | 88% | 2530 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 96% | 38,377 psi | 85% | 2523 fps | 97.5% |
| Vihtavuori N530 | <<locked>> | 86% | 40,219 psi | 89% | 2539 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 90% | 38,101 psi | 85% | 2520 fps | 98.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 40,625 psi | 90% | 2552 fps | 96.1% |
| Winchester 748 | <<locked>> | 86% | 38,595 psi | 86% | 2572 fps | 97.8% |
| Winchester StaBALL Match | <<locked>> | 90% | 40,611 psi | 90% | 2595 fps | 96.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.9"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 33,881 psi | 75% | 2388 fps | 99.7% |
| Accurate 2460 | <<locked>> | 80% | 36,463 psi | 81% | 2470 fps | 98.4% |
| Accurate 2495 | <<locked>> | 80% | 25,918 psi | 58% | 2267 fps | 98.4% |
| Accurate 2520 | <<locked>> | 80% | 32,053 psi | 71% | 2411 fps | 96.9% |
| Accurate 4064 | <<locked>> | 80% | 24,613 psi | 55% | 2241 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 86% | 37,782 psi | 84% | 2520 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 33,069 psi | 74% | 2388 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 31,169 psi | 69% | 2411 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 37,594 psi | 84% | 2566 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 34,708 psi | 77% | 2484 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 96% | 37,449 psi | 83% | 2592 fps | 95% |
| Bofors RP3 | <<locked>> | 90% | 33,852 psi | 75% | 2480 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 35,607 psi | 79% | 2402 fps | 96.6% |
| Hodgdon BL-C2 | <<locked>> | 82% | 32,779 psi | 73% | 2444 fps | 95.8% |
| Hodgdon H322 | <<locked>> | 80% | 37,652 psi | 84% | 2510 fps | 99.4% |
| Hodgdon H4895 | <<locked>> | 84% | 35,650 psi | 79% | 2480 fps | 95.2% |
| Hodgdon LEVERevolution | 42.9 gr | 88% | 36,318 psi | 81% | 2543 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,656 psi | 55% | 1463 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 36,999 psi | 82% | 2490 fps | 95.5% |
| IMR 3031 | 36.1 gr | 80% | 29,834 psi | 66% | 2392 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 33,069 psi | 74% | 2388 fps | 95% |
| Lovex D073.5 | <<locked>> | 80% | 36,318 psi | 81% | 2467 fps | 97.3% |
| Lovex D073.6 | <<locked>> | 80% | 28,674 psi | 64% | 2339 fps | 95.5% |
| Lovex S062 | <<locked>> | 86% | 32,822 psi | 73% | 2405 fps | 95.2% |
| Norma 201 | <<locked>> | 84% | 34,490 psi | 77% | 2425 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 30,240 psi | 67% | 2349 fps | 96.9% |
| Norma 203B | <<locked>> | 90% | 37,217 psi | 83% | 2536 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,569 psi | 55% | 1496 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 37,449 psi | 83% | 2487 fps | 97.9% |
| ReloadSwiss RS 60 | 44.1 gr | 90% | 32,996 psi | 73% | 2497 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 33,765 psi | 75% | 2395 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 84% | 32,808 psi | 73% | 2379 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 94% | 36,056 psi | 80% | 2520 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 28,674 psi | 64% | 2339 fps | 95.5% |
| Shooters World Precision | <<locked>> | 86% | 32,822 psi | 73% | 2405 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,489 psi | 72% | 2320 fps | 97.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,223 psi | 58% | 2182 fps | 96.4% |
| Somchem S321 | <<locked>> | 80% | 35,099 psi | 78% | 2461 fps | 96.2% |
| Somchem S335 | <<locked>> | 80% | 31,734 psi | 71% | 2323 fps | 98.1% |
| Somchem S355 | <<locked>> | 92% | 35,244 psi | 78% | 2484 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 37,115 psi | 83% | 2411 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 32,401 psi | 72% | 2329 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 80% | 27,267 psi | 61% | 2287 fps | 98.6% |
| Vihtavuori N140 | <<locked>> | 80% | 28,558 psi | 64% | 2287 fps | 96.6% |
| Vihtavuori N150 | <<locked>> | 90% | 31,430 psi | 70% | 2375 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 32,706 psi | 73% | 2379 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 27,296 psi | 61% | 2270 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 38,014 psi | 85% | 2497 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 31,531 psi | 70% | 2411 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 86% | 35,389 psi | 79% | 2487 fps | 95.1% |
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 50 powders for 7.7 x 58 mm Arisaka loaded with the .312 | 160gr | Peregrine VLR-4. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,671 fps; across all powders the maximum-charge window runs from 1,637 fps to 2,671 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 50 of the 50 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (310 MPa), the top charges use 74–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.312" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, ReloadSwiss RS 14, Winchester 6.5 StaBALL 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, Hodgdon LEVERevolution, IMR 3031 rank at the top here: for 7.7 x 58 mm Arisaka with the .312 | 160gr | Peregrine VLR-4 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.