Load Specifications
Load data in caliber 7.7 x 58 mm Arisaka with .310 | 200gr | Rhino Penetrator bullet and 62 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: 25.9"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 88% | 40,466 psi | 90% | 2254 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 39,552 psi | 88% | 2254 fps | 99.7% |
| Accurate 4064 | <<locked>> | 90% | 40,379 psi | 90% | 2283 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 37,985 psi | 84% | 2303 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 84% | 40,219 psi | 89% | 2260 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 88% | 38,725 psi | 86% | 2218 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 39,711 psi | 88% | 2224 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 82% | 38,377 psi | 85% | 2224 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 38,783 psi | 86% | 2320 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 39,813 psi | 89% | 2277 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 88% | 40,611 psi | 90% | 2290 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 98% | 39,566 psi | 88% | 2313 fps | 96.3% |
| Alliant Reloder-17 | <<locked>> | 94% | 39,682 psi | 88% | 2349 fps | 98.2% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 39,044 psi | 87% | 2257 fps | 96.4% |
| Bofors RP3 | <<locked>> | 90% | 39,030 psi | 87% | 2277 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 84% | 40,147 psi | 89% | 2287 fps | 99.3% |
| Hodgdon H4895 | <<locked>> | 84% | 40,480 psi | 90% | 2270 fps | 98.4% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,319 psi | 85% | 2264 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 38,653 psi | 86% | 2287 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,403 psi | 77% | 1430 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 39,131 psi | 87% | 2231 fps | 98% |
| IMR 3031 | <<locked>> | 84% | 39,160 psi | 87% | 2270 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 40,611 psi | 90% | 2244 fps | 97.5% |
| IMR 4831ᴾ | <<locked>> | 100% | 39,552 psi | 88% | 2310 fps | 96.6% |
| IMR 4895 | <<locked>> | 86% | 38,827 psi | 86% | 2270 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 82% | 39,711 psi | 88% | 2224 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 84% | 38,305 psi | 85% | 2244 fps | 99.6% |
| Lovex S060 | <<locked>> | 82% | 38,812 psi | 86% | 2169 fps | 97.5% |
| Lovex S062 | <<locked>> | 88% | 40,089 psi | 89% | 2247 fps | 98.9% |
| Norma 201 | <<locked>> | 84% | 39,363 psi | 88% | 2221 fps | 98.8% |
| Norma 202 | <<locked>> | 84% | 39,334 psi | 87% | 2231 fps | 99.9% |
| Norma 203B | <<locked>> | 88% | 39,856 psi | 89% | 2280 fps | 97.9% |
| Norma URP | <<locked>> | 98% | 39,291 psi | 87% | 2310 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 88% | 39,450 psi | 88% | 2290 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 38,522 psi | 86% | 2241 fps | 97.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,722 psi | 77% | 1467 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 39,305 psi | 87% | 2326 fps | 97.2% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 39,682 psi | 88% | 2362 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 86% | 39,697 psi | 88% | 2218 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 92% | 39,262 psi | 87% | 2274 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 38,305 psi | 85% | 2244 fps | 99.6% |
| Shooters World Precision | <<locked>> | 88% | 40,089 psi | 89% | 2247 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 38,479 psi | 86% | 2277 fps | 97.3% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 40,176 psi | 89% | 2244 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 38,783 psi | 86% | 2234 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 39,059 psi | 87% | 2149 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 38,392 psi | 85% | 2152 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 40,625 psi | 90% | 2192 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 39,769 psi | 88% | 2244 fps | 97.6% |
| Somchem S355 | <<locked>> | 92% | 40,277 psi | 90% | 2277 fps | 98.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 36,970 psi | 82% | 2306 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 82% | 39,073 psi | 87% | 2149 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 38,580 psi | 86% | 2211 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 39,523 psi | 88% | 2215 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 38,725 psi | 86% | 2228 fps | 99% |
| Vihtavuori N160 | <<locked>> | 96% | 38,885 psi | 86% | 2264 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 82% | 39,668 psi | 88% | 2221 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 88% | 40,611 psi | 90% | 2254 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 98% | 40,132 psi | 89% | 2313 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 39,972 psi | 89% | 2257 fps | 98.1% |
| Winchester 748 | <<locked>> | 82% | 38,464 psi | 86% | 2260 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 86% | 40,205 psi | 89% | 2280 fps | 98.4% |
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 2495 | <<locked>> | 80% | 31,212 psi | 69% | 2093 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 36,898 psi | 82% | 2208 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 29,544 psi | 66% | 2077 fps | 98.9% |
| Accurate 4350 | <<locked>> | 96% | 35,578 psi | 79% | 2257 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 35,476 psi | 79% | 2169 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 34,156 psi | 76% | 2126 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,463 psi | 83% | 2185 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 80% | 35,969 psi | 80% | 2188 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 36,332 psi | 81% | 2267 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 28,921 psi | 64% | 2057 fps | 95.4% |
| Alliant Reloder-15 | <<locked>> | 82% | 33,504 psi | 75% | 2152 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 96% | 37,391 psi | 83% | 2270 fps | 95.6% |
| Alliant Reloder-17 | 39.1 gr | 88% | 32,692 psi | 73% | 2201 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 36,622 psi | 81% | 2211 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 28,224 psi | 63% | 2057 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,085 psi | 78% | 2195 fps | 98.4% |
| Hodgdon H4895 | <<locked>> | 80% | 35,679 psi | 79% | 2178 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 31,908 psi | 71% | 2133 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 31,734 psi | 71% | 2146 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,411 psi | 57% | 1273 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,476 psi | 77% | 2142 fps | 96.8% |
| IMR 3031 | <<locked>> | 80% | 34,447 psi | 77% | 2188 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 33,678 psi | 75% | 2113 fps | 95.5% |
| IMR 4831 | <<locked>> | 96% | 34,838 psi | 77% | 2218 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 32,198 psi | 72% | 2136 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 37,463 psi | 83% | 2185 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 80% | 33,344 psi | 74% | 2152 fps | 98.9% |
| Lovex S060 | <<locked>> | 80% | 36,637 psi | 81% | 2126 fps | 96.9% |
| Lovex S062 | <<locked>> | 80% | 31,343 psi | 70% | 2080 fps | 96.8% |
| Norma 201 | <<locked>> | 80% | 34,911 psi | 78% | 2136 fps | 97.8% |
| Norma 202 | <<locked>> | 80% | 34,606 psi | 77% | 2146 fps | 99.5% |
| Norma 203B | <<locked>> | 80% | 30,908 psi | 69% | 2100 fps | 95.1% |
| Norma URP | <<locked>> | 96% | 36,767 psi | 82% | 2260 fps | 95.4% |
| Ramshot Big Game | 37 gr | 82% | 32,474 psi | 72% | 2149 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 36,100 psi | 80% | 2195 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,512 psi | 57% | 1302 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 34,563 psi | 77% | 2231 fps | 95.7% |
| ReloadSwiss RS 60 | 35.6 gr | 80% | 27,137 psi | 60% | 2067 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 33,170 psi | 74% | 2093 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 82% | 28,398 psi | 63% | 2054 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,344 psi | 74% | 2152 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 31,343 psi | 70% | 2080 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 31,908 psi | 71% | 2142 fps | 95.1% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 37,579 psi | 84% | 2195 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 34,026 psi | 76% | 2142 fps | 96.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,753 psi | 82% | 2110 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,950 psi | 67% | 1998 fps | 99.2% |
| Somchem S335 | <<locked>> | 80% | 36,129 psi | 80% | 2116 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 34,853 psi | 78% | 2152 fps | 96.3% |
| Somchem S355 | <<locked>> | 82% | 29,646 psi | 66% | 2064 fps | 95.2% |
| Somchem S365 | <<locked>> | 90% | 27,282 psi | 61% | 2077 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 36,738 psi | 82% | 2113 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 31,879 psi | 71% | 2093 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 32,706 psi | 73% | 2093 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 80% | 26,281 psi | 58% | 1969 fps | 95.3% |
| Vihtavuori N160 | <<locked>> | 94% | 36,405 psi | 81% | 2218 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 37,289 psi | 83% | 2178 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 80% | 31,343 psi | 70% | 2083 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 96% | 37,855 psi | 84% | 2270 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 30,850 psi | 69% | 2070 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 35,984 psi | 80% | 2215 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 32,924 psi | 73% | 2139 fps | 96.5% |
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 62 powders for 7.7 x 58 mm Arisaka loaded with the .310 | 200gr | Rhino Penetrator. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,362 fps; across all powders the maximum-charge window runs from 1,430 fps to 2,362 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 62 of the 62 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (310 MPa), the top charges use 77–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.31" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, Hodgdon TrailBoss, IMR 4831 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 7.7 x 58 mm Arisaka with the .310 | 200gr | Rhino Penetrator 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.