Load Specifications
Load data in caliber 8 x 57 IRS with .323 | 200gr | Nosler Custom Competition bullet and 66 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.
A valid access license is required to use the Personalized Load Calculator.
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>> | 82% | 42,757 psi | 89% | 2320 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 42,366 psi | 89% | 2369 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 41,249 psi | 86% | 2365 fps | 99.6% |
| Accurate 4064 | <<locked>> | 90% | 42,438 psi | 89% | 2402 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 43,062 psi | 90% | 2474 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 84% | 41,727 psi | 87% | 2372 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 90% | 42,670 psi | 89% | 2372 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 82% | 41,321 psi | 86% | 2339 fps | 98.5% |
| Alliant AR-Comp | <<locked>> | 84% | 42,844 psi | 90% | 2382 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 42,989 psi | 90% | 2490 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 41,568 psi | 87% | 2392 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 88% | 42,206 psi | 88% | 2402 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 98% | 41,263 psi | 86% | 2434 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 94% | 41,292 psi | 86% | 2467 fps | 97.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 40,509 psi | 85% | 2369 fps | 96.1% |
| Bofors RP3 | <<locked>> | 90% | 40,959 psi | 86% | 2395 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 84% | 42,003 psi | 88% | 2405 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 82% | 42,989 psi | 90% | 2467 fps | 97.4% |
| Hodgdon H380 | <<locked>> | 90% | 42,482 psi | 89% | 2398 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 84% | 42,003 psi | 88% | 2382 fps | 98.1% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,089 psi | 84% | 2382 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 42,830 psi | 89% | 2451 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,534 psi | 72% | 1512 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 43,250 psi | 90% | 2388 fps | 98.3% |
| IMR 3031 | <<locked>> | 84% | 40,930 psi | 86% | 2388 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 42,061 psi | 88% | 2356 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 41,539 psi | 87% | 2428 fps | 96.3% |
| IMR 4895 | <<locked>> | 88% | 43,134 psi | 90% | 2431 fps | 98% |
| IMR 8208 XBR | <<locked>> | 82% | 41,321 psi | 86% | 2339 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 86% | 42,598 psi | 89% | 2402 fps | 99.7% |
| Lovex S060 | <<locked>> | 84% | 42,438 psi | 89% | 2320 fps | 97.7% |
| Lovex S062 | <<locked>> | 88% | 41,582 psi | 87% | 2359 fps | 98.7% |
| Norma 201 | <<locked>> | 84% | 40,944 psi | 86% | 2333 fps | 98.5% |
| Norma 202 | <<locked>> | 84% | 40,915 psi | 85% | 2346 fps | 99.8% |
| Norma 203B | <<locked>> | 88% | 41,437 psi | 87% | 2392 fps | 97.6% |
| Norma URP | <<locked>> | 98% | 41,075 psi | 86% | 2425 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 88% | 41,075 psi | 86% | 2405 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 42,902 psi | 90% | 2402 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,722 psi | 73% | 1545 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 41,031 psi | 86% | 2441 fps | 96.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 41,205 psi | 86% | 2477 fps | 99.6% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 43,047 psi | 90% | 2487 fps | 96.2% |
| Rottweil R 901 | <<locked>> | 82% | 42,235 psi | 88% | 2333 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 86% | 41,408 psi | 87% | 2336 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 92% | 41,118 psi | 86% | 2388 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 86% | 42,598 psi | 89% | 2402 fps | 99.7% |
| Shooters World Precision | <<locked>> | 88% | 41,582 psi | 87% | 2359 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 42,670 psi | 89% | 2441 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 42,757 psi | 89% | 2388 fps | 97.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 42,844 psi | 90% | 2303 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 42,293 psi | 88% | 2303 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 42,163 psi | 88% | 2303 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 41,321 psi | 86% | 2356 fps | 97.3% |
| Somchem S355 | <<locked>> | 92% | 41,989 psi | 88% | 2392 fps | 98.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,696 psi | 81% | 2421 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 84% | 42,873 psi | 90% | 2300 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 42,670 psi | 89% | 2362 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 41,147 psi | 86% | 2329 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 94% | 43,134 psi | 90% | 2385 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 98% | 43,221 psi | 90% | 2425 fps | 96.3% |
| Vihtavuori N530 | <<locked>> | 82% | 41,104 psi | 86% | 2333 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 88% | 42,279 psi | 88% | 2365 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 98% | 42,177 psi | 88% | 2431 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 41,510 psi | 87% | 2369 fps | 97.9% |
| Winchester 748 | <<locked>> | 84% | 42,815 psi | 89% | 2421 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 42,018 psi | 88% | 2395 fps | 98.2% |
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% | 40,118 psi | 84% | 2277 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,590 psi | 68% | 2195 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 38,711 psi | 81% | 2323 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 30,821 psi | 64% | 2178 fps | 98.6% |
| Accurate 4350 | <<locked>> | 96% | 37,521 psi | 78% | 2372 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 36,883 psi | 77% | 2277 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 86% | 37,681 psi | 79% | 2280 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,841 psi | 81% | 2293 fps | 98% |
| Alliant AR-Comp | <<locked>> | 80% | 37,666 psi | 79% | 2300 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 37,826 psi | 79% | 2382 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,240 psi | 63% | 2159 fps | 95% |
| Alliant Reloder-15 | <<locked>> | 82% | 34,954 psi | 73% | 2260 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 96% | 38,870 psi | 81% | 2385 fps | 95.2% |
| Alliant Reloder-17 | 46.8 gr | 88% | 34,011 psi | 71% | 2306 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 38,130 psi | 80% | 2323 fps | 95.3% |
| Bofors RP3 | <<locked>> | 82% | 31,401 psi | 66% | 2201 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,622 psi | 77% | 2303 fps | 98.1% |
| Hodgdon CFE223 | <<locked>> | 80% | 40,147 psi | 84% | 2415 fps | 96.6% |
| Hodgdon H380 | <<locked>> | 88% | 39,885 psi | 83% | 2349 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 37,086 psi | 77% | 2290 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 33,228 psi | 69% | 2238 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,054 psi | 69% | 2251 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,686 psi | 54% | 1348 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,621 psi | 74% | 2244 fps | 96.4% |
| IMR 3031 | <<locked>> | 80% | 35,781 psi | 75% | 2293 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 35,070 psi | 73% | 2218 fps | 95.1% |
| IMR 4831 | <<locked>> | 98% | 38,957 psi | 81% | 2379 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 33,562 psi | 70% | 2241 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 38,841 psi | 81% | 2293 fps | 98% |
| Lovex D073.6 | <<locked>> | 80% | 34,911 psi | 73% | 2260 fps | 98.6% |
| Lovex S060 | <<locked>> | 80% | 37,811 psi | 79% | 2231 fps | 96.5% |
| Lovex S062 | <<locked>> | 80% | 32,590 psi | 68% | 2182 fps | 96.4% |
| Norma 201 | <<locked>> | 80% | 36,143 psi | 76% | 2241 fps | 97.5% |
| Norma 202 | <<locked>> | 80% | 36,027 psi | 75% | 2254 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 34,345 psi | 72% | 2251 fps | 95.5% |
| Norma URP | <<locked>> | 96% | 38,624 psi | 81% | 2379 fps | 95.1% |
| Ramshot Big Game | 45.4 gr | 84% | 36,143 psi | 76% | 2306 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,724 psi | 79% | 2306 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,715 psi | 54% | 1378 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 35,853 psi | 75% | 2336 fps | 95.2% |
| ReloadSwiss RS 60 | 42.6 gr | 80% | 28,181 psi | 59% | 2162 fps | 95.2% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 40,422 psi | 84% | 2441 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 39,726 psi | 83% | 2287 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 34,330 psi | 72% | 2198 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 84% | 31,560 psi | 66% | 2195 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,911 psi | 73% | 2260 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 32,590 psi | 68% | 2182 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 35,143 psi | 73% | 2290 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,360 psi | 74% | 2247 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,927 psi | 79% | 2215 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,038 psi | 65% | 2096 fps | 99% |
| Somchem S335 | <<locked>> | 80% | 37,318 psi | 78% | 2221 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 36,260 psi | 76% | 2260 fps | 95.9% |
| Somchem S355 | <<locked>> | 84% | 32,909 psi | 69% | 2211 fps | 95.5% |
| Somchem S365 | <<locked>> | 92% | 30,269 psi | 63% | 2228 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 37,985 psi | 79% | 2221 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,170 psi | 69% | 2198 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 33,997 psi | 71% | 2198 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 29,167 psi | 61% | 2110 fps | 95.6% |
| Vihtavuori N160 | <<locked>> | 96% | 40,596 psi | 85% | 2379 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 38,566 psi | 81% | 2287 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 80% | 32,793 psi | 69% | 2188 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 96% | 39,392 psi | 82% | 2379 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 34,185 psi | 71% | 2221 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 37,434 psi | 78% | 2323 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,403 psi | 72% | 2247 fps | 96.1% |
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 66 powders for 8 x 57 IRS loaded with the .323 | 200gr | Nosler Custom Competition. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,490 fps; across all powders the maximum-charge window runs from 1,512 fps to 2,490 fps. Accurate 4350 gives the best case fill at 100 %, and 66 of the 66 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.323" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Hodgdon Hybrid 100V, Hodgdon TrailBoss 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 8 x 57 IRS with the .323 | 200gr | Nosler Custom Competition 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.