Load Specifications
Load data in caliber 8 x 57 IRS with .323 | 201gr | RWS Evolution bullet and 59 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 Alliant Reloder-16.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 86% | 43,178 psi | 90% | 2395 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 40,625 psi | 85% | 2388 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 41,553 psi | 87% | 2467 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 82% | 42,134 psi | 88% | 2402 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 88% | 42,960 psi | 90% | 2402 fps | 97.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 40,582 psi | 85% | 2470 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 42,134 psi | 88% | 2421 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 86% | 42,714 psi | 89% | 2434 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 41,829 psi | 87% | 2474 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 92% | 41,800 psi | 87% | 2503 fps | 98.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 40,886 psi | 85% | 2398 fps | 96.8% |
| Bofors RP3 | <<locked>> | 88% | 41,771 psi | 87% | 2428 fps | 98.9% |
| Hodgdon BL-C2 | <<locked>> | 82% | 42,554 psi | 89% | 2431 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 88% | 43,018 psi | 90% | 2431 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 82% | 42,496 psi | 89% | 2415 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 40,669 psi | 85% | 2418 fps | 98.2% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 40,727 psi | 85% | 2434 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,867 psi | 73% | 1542 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 40,770 psi | 85% | 2369 fps | 98.3% |
| IMR 3031 | <<locked>> | 82% | 41,379 psi | 86% | 2411 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 42,612 psi | 89% | 2388 fps | 97.8% |
| IMR 4831 | <<locked>> | 98% | 42,598 psi | 89% | 2467 fps | 97.2% |
| IMR 4895 | <<locked>> | 84% | 41,031 psi | 86% | 2415 fps | 98% |
| Lovex D073.6 | <<locked>> | 82% | 40,567 psi | 85% | 2382 fps | 99.7% |
| Lovex S060 | <<locked>> | 82% | 42,482 psi | 89% | 2346 fps | 98.2% |
| Lovex S062 | <<locked>> | 86% | 42,250 psi | 88% | 2395 fps | 99.2% |
| Norma 201 | <<locked>> | 82% | 41,278 psi | 86% | 2362 fps | 99% |
| Norma 202 | <<locked>> | 82% | 41,278 psi | 86% | 2372 fps | 100% |
| Norma 203B | <<locked>> | 86% | 42,003 psi | 88% | 2425 fps | 98.2% |
| Norma URP | <<locked>> | 96% | 41,785 psi | 87% | 2464 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 86% | 41,742 psi | 87% | 2441 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 43,265 psi | 90% | 2431 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,331 psi | 74% | 1581 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 41,727 psi | 87% | 2477 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 41,814 psi | 87% | 2516 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 41,423 psi | 87% | 2484 fps | 96.5% |
| Rottweil R 902 | <<locked>> | 84% | 41,669 psi | 87% | 2362 fps | 99% |
| Rottweil R 903 | <<locked>> | 90% | 41,916 psi | 88% | 2425 fps | 98.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 40,567 psi | 85% | 2382 fps | 99.7% |
| Shooters World Precision | <<locked>> | 86% | 42,250 psi | 88% | 2395 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 43,265 psi | 90% | 2474 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 42,105 psi | 88% | 2385 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 43,149 psi | 90% | 2421 fps | 98.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 42,844 psi | 90% | 2323 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 42,525 psi | 89% | 2329 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 42,380 psi | 89% | 2329 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 41,684 psi | 87% | 2385 fps | 97.9% |
| Somchem S355 | <<locked>> | 90% | 42,699 psi | 89% | 2425 fps | 98.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,192 psi | 88% | 2513 fps | 99.6% |
| Vihtavuori N133 | <<locked>> | 82% | 42,960 psi | 90% | 2320 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 40,843 psi | 85% | 2352 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 41,539 psi | 87% | 2356 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 41,017 psi | 86% | 2369 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 94% | 41,278 psi | 86% | 2418 fps | 96.5% |
| Vihtavuori N540 | <<locked>> | 86% | 42,627 psi | 89% | 2392 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 43,033 psi | 90% | 2467 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 41,959 psi | 88% | 2405 fps | 98.6% |
| Winchester 748 | <<locked>> | 82% | 43,192 psi | 90% | 2448 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 42,438 psi | 89% | 2425 fps | 98.7% |
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 2495 | <<locked>> | 80% | 35,476 psi | 74% | 2264 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 33,547 psi | 70% | 2251 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 36,114 psi | 75% | 2362 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 39,523 psi | 83% | 2356 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 35,723 psi | 75% | 2260 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 35,534 psi | 74% | 2359 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,895 psi | 69% | 2238 fps | 96.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,433 psi | 74% | 2290 fps | 95.8% |
| Alliant Reloder-16 | 48.7 gr | 92% | 37,130 psi | 78% | 2375 fps | 95.4% |
| Alliant Reloder-17 | 47.9 gr | 84% | 32,285 psi | 67% | 2293 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,363 psi | 80% | 2352 fps | 96.1% |
| Bofors RP3 | <<locked>> | 80% | 32,010 psi | 67% | 2231 fps | 96.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,639 psi | 83% | 2379 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 37,768 psi | 79% | 2333 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 39,856 psi | 83% | 2365 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 31,792 psi | 66% | 2231 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,592 psi | 74% | 2329 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,817 psi | 54% | 1371 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,218 psi | 80% | 2320 fps | 97.7% |
| IMR 3031 | <<locked>> | 80% | 38,856 psi | 81% | 2365 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,273 psi | 74% | 2247 fps | 95.8% |
| IMR 4831 | <<locked>> | 92% | 35,172 psi | 73% | 2323 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 36,260 psi | 76% | 2320 fps | 96.8% |
| Lovex D073.6 | <<locked>> | 80% | 37,942 psi | 79% | 2336 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 40,147 psi | 84% | 2303 fps | 97.7% |
| Lovex S062 | <<locked>> | 80% | 35,027 psi | 73% | 2254 fps | 97.7% |
| Norma 201 | <<locked>> | 80% | 38,696 psi | 81% | 2313 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 38,885 psi | 81% | 2326 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 34,824 psi | 73% | 2280 fps | 96.3% |
| Norma URP | <<locked>> | 92% | 36,724 psi | 77% | 2362 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 34,113 psi | 71% | 2287 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 40,364 psi | 84% | 2379 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,121 psi | 55% | 1407 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 36,521 psi | 76% | 2375 fps | 96.2% |
| ReloadSwiss RS 60 | 45.6 gr | 80% | 30,197 psi | 63% | 2247 fps | 97.2% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 38,595 psi | 81% | 2431 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 36,840 psi | 77% | 2270 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 80% | 30,211 psi | 63% | 2182 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,942 psi | 79% | 2336 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 35,027 psi | 73% | 2254 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 33,431 psi | 70% | 2274 fps | 95.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,291 psi | 82% | 2333 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,000 psi | 79% | 2326 fps | 97.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,335 psi | 84% | 2280 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,185 psi | 69% | 2159 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 39,784 psi | 83% | 2283 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,117 psi | 82% | 2339 fps | 97.3% |
| Somchem S355 | <<locked>> | 80% | 31,285 psi | 65% | 2192 fps | 95.5% |
| Somchem S365 | <<locked>> | 88% | 29,051 psi | 61% | 2221 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 40,480 psi | 85% | 2280 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,868 psi | 75% | 2264 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,695 psi | 77% | 2267 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 29,660 psi | 62% | 2139 fps | 96.5% |
| Vihtavuori N160 | <<locked>> | 92% | 38,711 psi | 81% | 2369 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 35,215 psi | 74% | 2257 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 92% | 37,869 psi | 79% | 2372 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,343 psi | 68% | 2208 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 40,451 psi | 85% | 2398 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,086 psi | 77% | 2323 fps | 97.5% |
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 83 powders for 8 x 57 IRS loaded with the .323 | 201gr | RWS Evolution. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,516 fps; across all powders the maximum-charge window runs from 1,542 fps to 2,516 fps. Accurate 3100 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 201.0 gr projectile in 0.323" calls for a 1:15.0 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 60, Alliant Reloder-17, Alliant Reloder-16 rank at the top here: for 8 x 57 IRS with the .323 | 201gr | RWS Evolution they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 3100, Alliant Reloder-26 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.