Load Specifications
Load data in caliber 7.7 x 58 mm Arisaka with .311 | 123gr | Sellier & Bellot SP bullet and 29 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are IMR 3031, Alliant AR-Comp and Accurate 4064.
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>> | 88% | 39,465 psi | 88% | 2861 fps | 99.3% |
| Accurate 2460 | <<locked>> | 86% | 40,277 psi | 90% | 2897 fps | 97.2% |
| Accurate 2495 | <<locked>> | 96% | 39,697 psi | 88% | 2936 fps | 99.6% |
| Accurate 2520 | <<locked>> | 90% | 40,292 psi | 90% | 2940 fps | 96.8% |
| Accurate 4064 | <<locked>> | 98% | 39,566 psi | 88% | 2953 fps | 97.8% |
| ADI AR 2219 | <<locked>> | 82% | 39,769 psi | 88% | 2913 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 90% | 38,798 psi | 86% | 2943 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 39,929 psi | 89% | 2890 fps | 99.8% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 40,422 psi | 90% | 2812 fps | 98.7% |
| Hodgdon H322 | <<locked>> | 84% | 38,725 psi | 86% | 2890 fps | 98% |
| Hodgdon H335 | <<locked>> | 84% | 39,160 psi | 87% | 2900 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,735 psi | 73% | 1896 fps | 100% |
| IMR 3031 | <<locked>> | 92% | 39,320 psi | 87% | 2969 fps | 98.9% |
| IMR 4198 | <<locked>> | 82% | 38,986 psi | 87% | 2825 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 38,479 psi | 86% | 2913 fps | 96.3% |
| Norma 202 | <<locked>> | 92% | 40,074 psi | 89% | 2920 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,619 psi | 73% | 1939 fps | 100% |
| Rottweil R 901 | <<locked>> | 88% | 39,218 psi | 87% | 2861 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 92% | 38,479 psi | 86% | 2913 fps | 96.3% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 40,321 psi | 90% | 2917 fps | 97.3% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 40,582 psi | 90% | 2894 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 40,567 psi | 90% | 2831 fps | 97.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 39,334 psi | 87% | 2825 fps | 98.1% |
| Somchem S335 | <<locked>> | 90% | 39,479 psi | 88% | 2831 fps | 98% |
| Vihtavuori N130 | <<locked>> | 84% | 38,218 psi | 85% | 2792 fps | 99.5% |
| Vihtavuori N133 | <<locked>> | 90% | 40,089 psi | 89% | 2841 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 94% | 38,261 psi | 85% | 2894 fps | 99.3% |
| Vihtavuori N140 | <<locked>> | 94% | 40,451 psi | 90% | 2900 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 94% | 38,957 psi | 87% | 2884 fps | 96.9% |
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% | 30,589 psi | 68% | 2648 fps | 97.2% |
| Accurate 2460 | <<locked>> | 82% | 35,157 psi | 78% | 2779 fps | 95.6% |
| Accurate 2495 | <<locked>> | 82% | 24,816 psi | 55% | 2549 fps | 95.2% |
| Accurate 2520 | <<locked>> | 86% | 35,114 psi | 78% | 2822 fps | 95.1% |
| Accurate 4064 | 45.7 gr | 92% | 32,692 psi | 73% | 2789 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 37,014 psi | 82% | 2851 fps | 97.5% |
| Alliant AR-Comp | 39.3 gr | 80% | 28,123 psi | 63% | 2664 fps | 98.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 35,288 psi | 78% | 2782 fps | 99.3% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 37,869 psi | 84% | 2756 fps | 98.2% |
| Hodgdon H322 | <<locked>> | 80% | 33,808 psi | 75% | 2769 fps | 96.5% |
| Hodgdon H335 | <<locked>> | 80% | 34,301 psi | 76% | 2782 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,192 psi | 54% | 1699 fps | 100% |
| IMR 3031 | 40.2 gr | 82% | 28,616 psi | 64% | 2680 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 36,753 psi | 82% | 2776 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 90% | 36,042 psi | 80% | 2858 fps | 95.5% |
| Norma 202 | <<locked>> | 86% | 33,040 psi | 73% | 2753 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,989 psi | 53% | 1736 fps | 100% |
| Rottweil R 901 | <<locked>> | 84% | 34,795 psi | 77% | 2753 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 90% | 36,042 psi | 80% | 2858 fps | 95.5% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 37,666 psi | 84% | 2858 fps | 96.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 35,810 psi | 80% | 2789 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 33,620 psi | 75% | 2671 fps | 95.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 30,632 psi | 68% | 2612 fps | 95.4% |
| Somchem S335 | <<locked>> | 82% | 30,835 psi | 69% | 2618 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 33,808 psi | 75% | 2687 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 80% | 29,414 psi | 65% | 2582 fps | 96.6% |
| Vihtavuori N135 | <<locked>> | 82% | 26,049 psi | 58% | 2569 fps | 95.5% |
| Vihtavuori N140 | <<locked>> | 88% | 33,475 psi | 74% | 2740 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 90% | 34,374 psi | 76% | 2776 fps | 95.4% |
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 29 powders for 7.7 x 58 mm Arisaka loaded with the .311 | 123gr | Sellier & Bellot SP. IMR 3031 delivers the highest muzzle velocity at 2,969 fps; across all powders the maximum-charge window runs from 1,896 fps to 2,969 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 29 of the 29 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (310 MPa), the top charges use 73–90 %, leaving at least 10 % headroom. Hodgdon TrailBoss, ReloadSwiss RS 14 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. IMR 3031, Alliant AR-Comp, Accurate 4064 rank at the top here: for 7.7 x 58 mm Arisaka with the .311 | 123gr | Sellier & Bellot SP 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.