Load Specifications
Load data in caliber 8 x 57 IRS with .323 | 196gr | Sellier & Bellot SPCE bullet and 61 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 SNPE Vectan SP 11.
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% | 42,047 psi | 88% | 2408 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 42,250 psi | 88% | 2441 fps | 99.8% |
| Accurate 4064 | <<locked>> | 88% | 42,206 psi | 88% | 2444 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 43,004 psi | 90% | 2520 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 82% | 40,988 psi | 86% | 2408 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 88% | 42,061 psi | 88% | 2411 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 43,105 psi | 90% | 2421 fps | 99% |
| Alliant AR-Comp | <<locked>> | 82% | 42,467 psi | 89% | 2421 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 42,511 psi | 89% | 2533 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 41,133 psi | 86% | 2431 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 86% | 41,727 psi | 87% | 2444 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 98% | 43,308 psi | 90% | 2530 fps | 97% |
| Alliant Reloder-17 | <<locked>> | 92% | 40,785 psi | 85% | 2510 fps | 98% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 42,757 psi | 89% | 2461 fps | 96.9% |
| Bofors RP3 | <<locked>> | 88% | 40,669 psi | 85% | 2438 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 82% | 41,278 psi | 86% | 2438 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 88% | 41,959 psi | 88% | 2438 fps | 96% |
| Hodgdon H4895 | <<locked>> | 82% | 41,292 psi | 86% | 2421 fps | 98.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,148 psi | 88% | 2470 fps | 98.3% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 42,380 psi | 89% | 2490 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,838 psi | 73% | 1558 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 41,800 psi | 87% | 2415 fps | 98.2% |
| IMR 3031 | <<locked>> | 86% | 42,105 psi | 88% | 2451 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 41,205 psi | 86% | 2388 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 39,276 psi | 82% | 2434 fps | 96% |
| IMR 4895 | <<locked>> | 86% | 42,699 psi | 89% | 2474 fps | 98.1% |
| IMR 8208 XBR | <<locked>> | 82% | 43,105 psi | 90% | 2421 fps | 99% |
| Lovex D073.6 | <<locked>> | 84% | 42,250 psi | 88% | 2441 fps | 99.8% |
| Lovex S060 | <<locked>> | 82% | 41,655 psi | 87% | 2356 fps | 97.8% |
| Lovex S062 | <<locked>> | 86% | 41,292 psi | 86% | 2402 fps | 98.8% |
| Norma 201 | <<locked>> | 84% | 42,772 psi | 89% | 2415 fps | 99% |
| Norma 202 | <<locked>> | 84% | 43,062 psi | 90% | 2431 fps | 100% |
| Norma 203B | <<locked>> | 86% | 41,017 psi | 86% | 2434 fps | 97.7% |
| Norma URP | <<locked>> | 98% | 43,236 psi | 90% | 2516 fps | 96.8% |
| Ramshot Big Game | <<locked>> | 86% | 40,712 psi | 85% | 2448 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 42,264 psi | 88% | 2441 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,027 psi | 73% | 1594 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 40,654 psi | 85% | 2487 fps | 97% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 40,872 psi | 85% | 2523 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 43,033 psi | 90% | 2539 fps | 96.5% |
| Rottweil R 902 | <<locked>> | 86% | 43,192 psi | 90% | 2415 fps | 99% |
| Rottweil R 903 | <<locked>> | 90% | 40,814 psi | 85% | 2431 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 42,250 psi | 88% | 2441 fps | 99.8% |
| Shooters World Precision | <<locked>> | 86% | 41,292 psi | 86% | 2402 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 42,264 psi | 88% | 2484 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 42,148 psi | 88% | 2431 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 41,959 psi | 88% | 2336 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 41,568 psi | 87% | 2339 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 41,495 psi | 87% | 2343 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 40,727 psi | 85% | 2395 fps | 97.4% |
| Somchem S355 | <<locked>> | 90% | 41,698 psi | 87% | 2434 fps | 98.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,089 psi | 86% | 2520 fps | 99.2% |
| Vihtavuori N133 | <<locked>> | 82% | 42,032 psi | 88% | 2333 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 42,351 psi | 88% | 2405 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 40,596 psi | 85% | 2369 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 92% | 42,511 psi | 89% | 2421 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 96% | 42,728 psi | 89% | 2470 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 82% | 43,149 psi | 90% | 2418 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 86% | 41,640 psi | 87% | 2405 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 96% | 41,974 psi | 88% | 2474 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 40,843 psi | 85% | 2408 fps | 98% |
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% | 34,505 psi | 72% | 2274 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,262 psi | 82% | 2388 fps | 99.5% |
| Accurate 4064 | <<locked>> | 80% | 32,634 psi | 68% | 2257 fps | 99.1% |
| Accurate 4350 | <<locked>> | 94% | 37,565 psi | 78% | 2418 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 38,653 psi | 81% | 2362 fps | 97% |
| ADI AR 2208 | <<locked>> | 82% | 34,940 psi | 73% | 2270 fps | 95% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,683 psi | 85% | 2375 fps | 98.6% |
| Alliant AR-Comp | <<locked>> | 80% | 39,842 psi | 83% | 2382 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 37,014 psi | 77% | 2415 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,039 psi | 67% | 2244 fps | 95.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,577 psi | 72% | 2297 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 94% | 38,421 psi | 80% | 2428 fps | 95.4% |
| Alliant Reloder-17 | 48.9 gr | 86% | 33,605 psi | 70% | 2349 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,478 psi | 78% | 2359 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 31,154 psi | 65% | 2234 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,682 psi | 81% | 2388 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 86% | 39,349 psi | 82% | 2388 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 38,957 psi | 81% | 2375 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 32,909 psi | 69% | 2280 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 32,779 psi | 68% | 2290 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,788 psi | 54% | 1391 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,809 psi | 73% | 2274 fps | 96.4% |
| IMR 3031 | <<locked>> | 80% | 34,592 psi | 72% | 2313 fps | 99.9% |
| IMR 4064 | <<locked>> | 82% | 34,301 psi | 72% | 2251 fps | 95.1% |
| IMR 4831 | <<locked>> | 98% | 36,999 psi | 77% | 2388 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 35,375 psi | 74% | 2326 fps | 96.1% |
| IMR 8208 XBR | <<locked>> | 80% | 40,683 psi | 85% | 2375 fps | 98.6% |
| Lovex D073.6 | <<locked>> | 80% | 36,970 psi | 77% | 2346 fps | 99.1% |
| Lovex S060 | <<locked>> | 80% | 39,349 psi | 82% | 2313 fps | 97.2% |
| Lovex S062 | <<locked>> | 80% | 34,200 psi | 71% | 2260 fps | 97.1% |
| Norma 201 | <<locked>> | 80% | 37,826 psi | 79% | 2323 fps | 98.1% |
| Norma 202 | <<locked>> | 80% | 37,971 psi | 79% | 2339 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 33,982 psi | 71% | 2287 fps | 95.6% |
| Norma URP | <<locked>> | 94% | 38,232 psi | 80% | 2418 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 82% | 35,491 psi | 74% | 2339 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,450 psi | 82% | 2388 fps | 97.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,049 psi | 54% | 1424 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 35,578 psi | 74% | 2379 fps | 95.4% |
| ReloadSwiss RS 60 | 45.5 gr | 80% | 29,515 psi | 62% | 2251 fps | 96.4% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 40,103 psi | 84% | 2484 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 36,027 psi | 75% | 2280 fps | 97.6% |
| Rottweil R 903 | <<locked>> | 82% | 31,444 psi | 66% | 2238 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,970 psi | 77% | 2346 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 34,200 psi | 71% | 2260 fps | 97.1% |
| SNPE Vectan SP 11 | 47 gr | 84% | 34,751 psi | 73% | 2329 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,144 psi | 78% | 2333 fps | 96.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,494 psi | 83% | 2293 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,474 psi | 68% | 2169 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 38,957 psi | 81% | 2297 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 38,159 psi | 80% | 2346 fps | 96.7% |
| Somchem S355 | <<locked>> | 82% | 32,576 psi | 68% | 2247 fps | 95.6% |
| Somchem S365 | <<locked>> | 90% | 30,008 psi | 63% | 2267 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 39,595 psi | 83% | 2293 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,940 psi | 73% | 2274 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,824 psi | 75% | 2280 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 80% | 28,906 psi | 60% | 2142 fps | 95.8% |
| Vihtavuori N160 | <<locked>> | 92% | 37,797 psi | 79% | 2375 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 40,393 psi | 84% | 2369 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 80% | 34,389 psi | 72% | 2267 fps | 99% |
| Vihtavuori N550 | <<locked>> | 94% | 39,363 psi | 82% | 2428 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 33,649 psi | 70% | 2260 fps | 95.7% |
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 IRS loaded with the .323 | 196gr | Sellier & Bellot SPCE. ReloadSwiss RS 62 delivers the highest muzzle velocity at 2,539 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,539 fps. Alliant Reloder-23 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 (330 MPa), the top charges use 68–90 %, leaving at least 10 % headroom. The 196.0 gr projectile in 0.323" calls for a 1:15.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, 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, SNPE Vectan SP 11 rank at the top here: for 8 x 57 IRS with the .323 | 196gr | Sellier & Bellot SPCE they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, 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.