Load Specifications
Load data in caliber 8 x 57 IRS with .323 | 200gr | Nosler AccuBond bullet and 65 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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 42,699 psi | 89% | 2320 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 42,308 psi | 88% | 2369 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 41,481 psi | 87% | 2372 fps | 99.6% |
| Accurate 4064 | <<locked>> | 90% | 42,380 psi | 89% | 2402 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 43,250 psi | 90% | 2477 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 84% | 41,669 psi | 87% | 2372 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 90% | 42,569 psi | 89% | 2372 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 82% | 41,220 psi | 86% | 2339 fps | 98.5% |
| Alliant AR-Comp | <<locked>> | 84% | 43,091 psi | 90% | 2385 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 43,221 psi | 90% | 2493 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 41,539 psi | 87% | 2392 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 88% | 42,380 psi | 89% | 2405 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 98% | 41,452 psi | 87% | 2438 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 94% | 41,437 psi | 87% | 2470 fps | 97.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 40,698 psi | 85% | 2372 fps | 96.1% |
| Bofors RP3 | <<locked>> | 90% | 41,147 psi | 86% | 2398 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 84% | 41,959 psi | 88% | 2402 fps | 99.1% |
| Hodgdon CFE223 | <<locked>> | 82% | 43,163 psi | 90% | 2470 fps | 97.4% |
| Hodgdon H380 | <<locked>> | 90% | 42,656 psi | 89% | 2402 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 84% | 41,930 psi | 88% | 2382 fps | 98.1% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,972 psi | 84% | 2379 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 42,989 psi | 90% | 2451 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,490 psi | 72% | 1512 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 43,178 psi | 90% | 2388 fps | 98.3% |
| IMR 3031 | <<locked>> | 84% | 40,872 psi | 85% | 2385 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 42,308 psi | 88% | 2359 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 41,452 psi | 87% | 2425 fps | 96.3% |
| IMR 4895 | <<locked>> | 86% | 40,756 psi | 85% | 2388 fps | 97.5% |
| IMR 8208 XBR | <<locked>> | 82% | 41,220 psi | 86% | 2339 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 86% | 42,801 psi | 89% | 2405 fps | 99.7% |
| Lovex S060 | <<locked>> | 84% | 42,641 psi | 89% | 2323 fps | 97.7% |
| Lovex S062 | <<locked>> | 88% | 41,771 psi | 87% | 2362 fps | 98.7% |
| Norma 201 | <<locked>> | 84% | 40,901 psi | 85% | 2333 fps | 98.5% |
| Norma 202 | <<locked>> | 84% | 40,814 psi | 85% | 2343 fps | 99.8% |
| Norma 203B | <<locked>> | 88% | 41,611 psi | 87% | 2395 fps | 97.6% |
| Norma URP | <<locked>> | 98% | 40,959 psi | 86% | 2425 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 88% | 41,234 psi | 86% | 2408 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 43,062 psi | 90% | 2408 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,693 psi | 72% | 1545 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 41,234 psi | 86% | 2448 fps | 97% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 41,394 psi | 86% | 2480 fps | 99.6% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 43,236 psi | 90% | 2490 fps | 96.2% |
| Rottweil R 901 | <<locked>> | 82% | 42,192 psi | 88% | 2333 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 86% | 41,336 psi | 86% | 2336 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 92% | 41,060 psi | 86% | 2388 fps | 98.1% |
| Shooters World Match Rifle | <<locked>> | 86% | 42,801 psi | 89% | 2405 fps | 99.7% |
| Shooters World Precision | <<locked>> | 88% | 41,771 psi | 87% | 2362 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 42,627 psi | 89% | 2441 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 42,917 psi | 90% | 2392 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 42,786 psi | 89% | 2300 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 42,221 psi | 88% | 2303 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 42,134 psi | 88% | 2303 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 41,495 psi | 87% | 2359 fps | 97.4% |
| Somchem S355 | <<locked>> | 92% | 42,206 psi | 88% | 2395 fps | 98.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,870 psi | 81% | 2425 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 84% | 42,815 psi | 89% | 2300 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 42,641 psi | 89% | 2362 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 41,321 psi | 86% | 2333 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 94% | 43,018 psi | 90% | 2382 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 82% | 41,292 psi | 86% | 2336 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 88% | 42,163 psi | 88% | 2365 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 98% | 42,090 psi | 88% | 2428 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 41,452 psi | 87% | 2369 fps | 97.9% |
| Winchester 748 | <<locked>> | 84% | 42,714 psi | 89% | 2418 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 41,945 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% | 40,030 psi | 84% | 2277 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,561 psi | 68% | 2195 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 38,667 psi | 81% | 2323 fps | 99.3% |
| Accurate 4064 | <<locked>> | 80% | 30,777 psi | 64% | 2175 fps | 98.5% |
| Accurate 4350 | <<locked>> | 96% | 37,463 psi | 78% | 2372 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 36,796 psi | 77% | 2277 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 86% | 37,840 psi | 79% | 2283 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,783 psi | 81% | 2293 fps | 98% |
| Alliant AR-Comp | <<locked>> | 80% | 37,579 psi | 79% | 2300 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 37,739 psi | 79% | 2379 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 30,342 psi | 63% | 2162 fps | 95% |
| Alliant Reloder-15 | <<locked>> | 82% | 34,925 psi | 73% | 2260 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 96% | 39,015 psi | 82% | 2388 fps | 95.3% |
| Alliant Reloder-17 | 46.9 gr | 88% | 34,142 psi | 71% | 2313 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 38,072 psi | 80% | 2323 fps | 95.3% |
| Bofors RP3 | <<locked>> | 82% | 31,575 psi | 66% | 2205 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,796 psi | 77% | 2306 fps | 98.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 40,350 psi | 84% | 2418 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 88% | 39,842 psi | 83% | 2349 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 37,014 psi | 77% | 2290 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 33,373 psi | 70% | 2241 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,025 psi | 69% | 2251 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,657 psi | 54% | 1348 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,795 psi | 75% | 2247 fps | 96.5% |
| IMR 3031 | <<locked>> | 80% | 35,723 psi | 75% | 2293 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 35,041 psi | 73% | 2218 fps | 95.1% |
| IMR 4831 | <<locked>> | 98% | 38,914 psi | 81% | 2379 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 33,489 psi | 70% | 2241 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 38,783 psi | 81% | 2293 fps | 98% |
| Lovex D073.6 | <<locked>> | 80% | 34,882 psi | 73% | 2257 fps | 98.6% |
| Lovex S060 | <<locked>> | 80% | 37,739 psi | 79% | 2231 fps | 96.5% |
| Lovex S062 | <<locked>> | 80% | 32,547 psi | 68% | 2182 fps | 96.4% |
| Norma 201 | <<locked>> | 80% | 36,071 psi | 75% | 2241 fps | 97.4% |
| Norma 202 | <<locked>> | 80% | 36,216 psi | 76% | 2260 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 34,272 psi | 72% | 2251 fps | 95.5% |
| Norma URP | <<locked>> | 96% | 38,508 psi | 80% | 2375 fps | 95.1% |
| Ramshot Big Game | 45.4 gr | 84% | 36,114 psi | 75% | 2306 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,637 psi | 79% | 2306 fps | 96.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,686 psi | 54% | 1378 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 36,027 psi | 75% | 2343 fps | 95.3% |
| ReloadSwiss RS 60 | 42.6 gr | 80% | 28,108 psi | 59% | 2162 fps | 95.2% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 40,364 psi | 84% | 2441 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 39,885 psi | 83% | 2293 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 34,490 psi | 72% | 2201 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 84% | 31,676 psi | 66% | 2201 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,882 psi | 73% | 2257 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 32,547 psi | 68% | 2182 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 35,317 psi | 74% | 2293 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,288 psi | 74% | 2247 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,869 psi | 79% | 2215 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,009 psi | 65% | 2096 fps | 99% |
| Somchem S335 | <<locked>> | 80% | 37,260 psi | 78% | 2218 fps | 99.8% |
| Somchem S341 | <<locked>> | 80% | 36,230 psi | 76% | 2260 fps | 95.9% |
| Somchem S355 | <<locked>> | 84% | 32,851 psi | 69% | 2208 fps | 95.5% |
| Somchem S365 | <<locked>> | 92% | 30,400 psi | 64% | 2231 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 37,898 psi | 79% | 2218 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,141 psi | 69% | 2195 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,171 psi | 71% | 2201 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 82% | 29,312 psi | 61% | 2113 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 38,740 psi | 81% | 2290 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 80% | 32,764 psi | 68% | 2188 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 96% | 39,610 psi | 83% | 2382 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 34,301 psi | 72% | 2224 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 37,405 psi | 78% | 2323 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,374 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 86 powders for 8 x 57 IRS loaded with the .323 | 200gr | Nosler AccuBond. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,493 fps; across all powders the maximum-charge window runs from 1,512 fps to 2,493 fps. Accurate 4350 gives the best case fill at 100 %, and 86 of the 86 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (330 MPa), the top charges use 65–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.323" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-23, Hodgdon Hybrid 100V 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 AccuBond they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-23, Bofors RP7, Hodgdon H414 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.