Load Specifications
Load data in caliber 8 x 57 IS with .323 | 220gr | Barnes X S bullet and 84 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 ReloadSwiss RS 52.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 50,357 psi | 89% | 2264 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 48,588 psi | 86% | 2287 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 50,821 psi | 90% | 2359 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 50,821 psi | 90% | 2359 fps | 100% |
| Accurate 4064 | <<locked>> | 90% | 48,414 psi | 86% | 2323 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 48,689 psi | 86% | 2402 fps | 98.4% |
| ADI AR 2206H | <<locked>> | 86% | 48,791 psi | 86% | 2333 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 92% | 49,356 psi | 87% | 2326 fps | 98.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 50,995 psi | 90% | 2336 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 86% | 50,560 psi | 89% | 2320 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 50,140 psi | 89% | 2457 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 48,718 psi | 86% | 2346 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 90% | 49,516 psi | 88% | 2365 fps | 99% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 47,718 psi | 84% | 2398 fps | 98.4% |
| Alliant Reloder-17 | <<locked>> | 96% | 48,283 psi | 85% | 2434 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,635 psi | 61% | 2182 fps | 96.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 50,792 psi | 90% | 2382 fps | 98.8% |
| Bofors RP3 | <<locked>> | 92% | 49,008 psi | 87% | 2362 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 49,980 psi | 88% | 2280 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 49,690 psi | 88% | 2362 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 50,749 psi | 90% | 2434 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 92% | 50,212 psi | 89% | 2365 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 86% | 49,153 psi | 87% | 2343 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,135 psi | 78% | 2303 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 50,169 psi | 89% | 2405 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,273 psi | 62% | 1417 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 49,980 psi | 88% | 2339 fps | 99.6% |
| IMR 3031 | <<locked>> | 86% | 48,370 psi | 86% | 2333 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 48,820 psi | 86% | 2310 fps | 98.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,383 psi | 82% | 2352 fps | 98.1% |
| IMR 4895 | <<locked>> | 90% | 50,691 psi | 90% | 2392 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 86% | 50,995 psi | 90% | 2336 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 88% | 50,821 psi | 90% | 2359 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 49,008 psi | 87% | 2274 fps | 99.2% |
| Lovex S062 | <<locked>> | 90% | 48,892 psi | 86% | 2316 fps | 99.8% |
| Lovex S065 | <<locked>> | 98% | 50,720 psi | 90% | 2349 fps | 97.4% |
| Lovex S070ᴾ | <<locked>> | 100% | 51,184 psi | 90% | 2375 fps | 96.3% |
| Norma 201 | <<locked>> | 88% | 50,995 psi | 90% | 2333 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 51,053 psi | 90% | 2339 fps | 100% |
| Norma 203B | <<locked>> | 90% | 48,747 psi | 86% | 2356 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 48,225 psi | 85% | 2392 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 90% | 48,225 psi | 85% | 2369 fps | 99.1% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 47,572 psi | 84% | 2385 fps | 96.3% |
| Ramshot TAC | <<locked>> | 86% | 51,039 psi | 90% | 2343 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 50,140 psi | 89% | 2362 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 82% | 48,820 psi | 86% | 2290 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,679 psi | 63% | 1453 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 50,430 psi | 89% | 2320 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 50,560 psi | 89% | 2346 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 48,631 psi | 86% | 2411 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 48,312 psi | 85% | 2441 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 48,008 psi | 85% | 2418 fps | 98% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,820 psi | 86% | 2431 fps | 97.4% |
| Rottweil R 901 | <<locked>> | 84% | 49,995 psi | 88% | 2287 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 48,573 psi | 86% | 2290 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 94% | 48,863 psi | 86% | 2352 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 98% | 50,720 psi | 90% | 2349 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 88% | 50,821 psi | 90% | 2359 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 48,892 psi | 86% | 2316 fps | 99.8% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 51,184 psi | 90% | 2375 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 49,879 psi | 88% | 2398 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 49,472 psi | 87% | 2326 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 49,850 psi | 88% | 2349 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 49,530 psi | 88% | 2244 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 49,095 psi | 87% | 2247 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 50,502 psi | 89% | 2303 fps | 95.9% |
| Somchem S321 | <<locked>> | 82% | 48,820 psi | 86% | 2323 fps | 99.9% |
| Somchem S335 | <<locked>> | 86% | 49,139 psi | 87% | 2251 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 48,544 psi | 86% | 2320 fps | 99.1% |
| Somchem S355 | <<locked>> | 94% | 49,487 psi | 87% | 2352 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,178 psi | 76% | 2352 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 82% | 49,617 psi | 88% | 2218 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 49,371 psi | 87% | 2234 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 50,459 psi | 89% | 2306 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 51,068 psi | 90% | 2316 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 50,575 psi | 89% | 2336 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 50,633 psi | 90% | 2388 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 86% | 51,155 psi | 90% | 2333 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 90% | 49,313 psi | 87% | 2316 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 49,574 psi | 88% | 2395 fps | 98.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,927 psi | 65% | 2254 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 48,356 psi | 85% | 2333 fps | 99.5% |
| Winchester 748 | <<locked>> | 86% | 50,212 psi | 89% | 2372 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 88% | 49,197 psi | 87% | 2352 fps | 99.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 44,643 psi | 79% | 2185 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,479 psi | 68% | 2139 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,163 psi | 75% | 2231 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 42,163 psi | 75% | 2231 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 36,303 psi | 64% | 2129 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 35,418 psi | 63% | 2178 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 40,857 psi | 72% | 2201 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 35,027 psi | 62% | 2080 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,656 psi | 75% | 2208 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 42,192 psi | 75% | 2208 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,782 psi | 65% | 2211 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,418 psi | 61% | 2103 fps | 97.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,912 psi | 65% | 2149 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,245 psi | 64% | 2182 fps | 95.1% |
| Alliant Reloder-17 | 41.2 gr | 82% | 31,763 psi | 56% | 2110 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,909 psi | 58% | 2142 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,421 psi | 70% | 2198 fps | 96.5% |
| Bofors RP3 | <<locked>> | 80% | 34,040 psi | 60% | 2106 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,585 psi | 79% | 2201 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,017 psi | 73% | 2231 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,570 psi | 79% | 2339 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 84% | 39,378 psi | 70% | 2188 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 41,162 psi | 73% | 2211 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 31,560 psi | 56% | 2057 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,927 psi | 65% | 2185 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,455 psi | 47% | 1266 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,465 psi | 70% | 2172 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 40,190 psi | 71% | 2215 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,738 psi | 65% | 2106 fps | 96.4% |
| IMR 4831 | <<locked>> | 92% | 36,608 psi | 65% | 2185 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 37,666 psi | 67% | 2175 fps | 97.3% |
| IMR 8208 XBR | <<locked>> | 80% | 42,656 psi | 75% | 2208 fps | 99.2% |
| Lovex D073.6 | <<locked>> | 80% | 39,798 psi | 70% | 2195 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 41,408 psi | 73% | 2152 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 36,898 psi | 65% | 2119 fps | 98.3% |
| Lovex S065 | <<locked>> | 90% | 40,611 psi | 72% | 2188 fps | 95% |
| Lovex S070 | <<locked>> | 96% | 45,542 psi | 81% | 2290 fps | 95% |
| Norma 201 | <<locked>> | 80% | 40,669 psi | 72% | 2172 fps | 98.9% |
| Norma 202 | <<locked>> | 80% | 40,335 psi | 71% | 2178 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 36,318 psi | 64% | 2142 fps | 96.9% |
| Norma URP | <<locked>> | 90% | 35,897 psi | 63% | 2175 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 35,433 psi | 63% | 2146 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 98% | 44,831 psi | 79% | 2339 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 42,496 psi | 75% | 2208 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,597 psi | 74% | 2228 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,977 psi | 81% | 2247 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,934 psi | 48% | 1299 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,718 psi | 84% | 2280 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 44,773 psi | 79% | 2257 fps | 95.3% |
| ReloadSwiss RS 52 | 39.6 gr | 80% | 37,913 psi | 67% | 2228 fps | 96.7% |
| ReloadSwiss RS 60 | 40.2 gr | 80% | 31,691 psi | 56% | 2119 fps | 97.9% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,565 psi | 66% | 2234 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 40,669 psi | 72% | 2287 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 44,831 psi | 79% | 2211 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,725 psi | 68% | 2129 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 80% | 32,285 psi | 57% | 2064 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,611 psi | 72% | 2188 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,798 psi | 70% | 2195 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 36,898 psi | 65% | 2119 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 96% | 45,542 psi | 81% | 2290 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,924 psi | 58% | 2093 fps | 95.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,901 psi | 72% | 2188 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,363 psi | 70% | 2178 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,698 psi | 74% | 2129 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,592 psi | 61% | 2024 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 47,630 psi | 84% | 2264 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 45,672 psi | 81% | 2277 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 41,495 psi | 73% | 2139 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,147 psi | 71% | 2185 fps | 97.7% |
| Somchem S355 | <<locked>> | 80% | 33,214 psi | 59% | 2067 fps | 96.4% |
| Somchem S365 | <<locked>> | 84% | 27,427 psi | 48% | 2008 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 46,920 psi | 83% | 2182 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,684 psi | 74% | 2126 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,507 psi | 66% | 2119 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,130 psi | 67% | 2126 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 31,415 psi | 56% | 2014 fps | 97.3% |
| Vihtavuori N160 | <<locked>> | 90% | 37,579 psi | 66% | 2175 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 42,612 psi | 75% | 2205 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 80% | 36,622 psi | 65% | 2116 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 36,767 psi | 65% | 2178 fps | 95% |
| Vihtavuori N555 | <<locked>> | 98% | 34,722 psi | 61% | 2205 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,749 psi | 56% | 2031 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 41,597 psi | 74% | 2244 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,479 psi | 68% | 2182 fps | 98% |
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 84 powders for 8 x 57 IS loaded with the .323 | 220gr | Barnes X S. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,457 fps; across all powders the maximum-charge window runs from 1,417 fps to 2,457 fps. Accurate 4350 gives the best case fill at 100 %, and 84 of the 84 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.323" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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, ReloadSwiss RS 52 rank at the top here: for 8 x 57 IS with the .323 | 220gr | Barnes X S 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.