Load Specifications
Load data in caliber 8 x 57 IRS with .322 | 196gr | Prvi Partizan SP bullet and 60 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 Bofors RP3.
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% | 42,395 psi | 89% | 2415 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 42,337 psi | 88% | 2444 fps | 99.8% |
| Accurate 4064 | <<locked>> | 88% | 42,337 psi | 88% | 2448 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 40,408 psi | 84% | 2477 fps | 96.3% |
| ADI AR 2206H | <<locked>> | 82% | 41,321 psi | 86% | 2418 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 88% | 42,409 psi | 89% | 2421 fps | 97.3% |
| Alliant AR-Comp | <<locked>> | 82% | 42,612 psi | 89% | 2425 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 42,583 psi | 89% | 2536 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 41,495 psi | 87% | 2441 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 86% | 42,047 psi | 88% | 2451 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 96% | 41,205 psi | 86% | 2487 fps | 96.5% |
| Alliant Reloder-17 | <<locked>> | 92% | 41,075 psi | 86% | 2516 fps | 98.1% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 43,091 psi | 90% | 2467 fps | 97.1% |
| Bofors RP3 | <<locked>> | 88% | 41,017 psi | 86% | 2444 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 82% | 41,597 psi | 87% | 2444 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 88% | 42,308 psi | 88% | 2448 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 82% | 41,640 psi | 87% | 2428 fps | 98.3% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,453 psi | 89% | 2480 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 42,699 psi | 89% | 2500 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,867 psi | 73% | 1562 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 42,627 psi | 89% | 2431 fps | 98.4% |
| IMR 3031 | <<locked>> | 84% | 43,308 psi | 90% | 2474 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 41,785 psi | 87% | 2402 fps | 97.4% |
| IMR 4831 | <<locked>> | 98% | 41,742 psi | 87% | 2480 fps | 96.7% |
| IMR 4895 | <<locked>> | 86% | 43,062 psi | 90% | 2480 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 84% | 42,583 psi | 89% | 2448 fps | 99.8% |
| Lovex S060 | <<locked>> | 82% | 41,989 psi | 88% | 2365 fps | 97.9% |
| Lovex S062 | <<locked>> | 86% | 41,423 psi | 87% | 2408 fps | 98.8% |
| Norma 201 | <<locked>> | 84% | 43,134 psi | 90% | 2425 fps | 99.1% |
| Norma 202 | <<locked>> | 84% | 43,149 psi | 90% | 2434 fps | 100% |
| Norma 203B | <<locked>> | 86% | 41,365 psi | 86% | 2441 fps | 97.8% |
| Norma URP | <<locked>> | 96% | 41,031 psi | 86% | 2477 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 86% | 40,785 psi | 85% | 2451 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 42,583 psi | 89% | 2448 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,056 psi | 73% | 1598 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 41,017 psi | 86% | 2493 fps | 97.2% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 41,162 psi | 86% | 2533 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 43,308 psi | 90% | 2549 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 84% | 40,872 psi | 85% | 2375 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 90% | 40,944 psi | 86% | 2434 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 42,583 psi | 89% | 2448 fps | 99.8% |
| Shooters World Precision | <<locked>> | 86% | 41,423 psi | 87% | 2408 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 42,540 psi | 89% | 2490 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 42,496 psi | 89% | 2438 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 42,366 psi | 89% | 2346 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 41,974 psi | 88% | 2349 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 41,597 psi | 87% | 2346 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 41,031 psi | 86% | 2402 fps | 97.5% |
| Somchem S355 | <<locked>> | 90% | 42,032 psi | 88% | 2441 fps | 98.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,379 psi | 86% | 2526 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 82% | 42,424 psi | 89% | 2343 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 42,467 psi | 89% | 2408 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 40,930 psi | 86% | 2375 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 42,859 psi | 90% | 2428 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 96% | 43,047 psi | 90% | 2477 fps | 96.7% |
| Vihtavuori N540 | <<locked>> | 86% | 41,959 psi | 88% | 2411 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 96% | 42,279 psi | 88% | 2484 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 41,075 psi | 86% | 2418 fps | 98.1% |
| Winchester 748 | <<locked>> | 82% | 42,511 psi | 89% | 2467 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 84% | 41,742 psi | 87% | 2441 fps | 98.3% |
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% | 34,882 psi | 73% | 2283 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,668 psi | 83% | 2398 fps | 99.5% |
| Accurate 4064 | <<locked>> | 80% | 32,996 psi | 69% | 2267 fps | 99.2% |
| Accurate 4350 | <<locked>> | 94% | 37,695 psi | 79% | 2421 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 38,769 psi | 81% | 2369 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 35,244 psi | 74% | 2277 fps | 95.1% |
| Alliant AR-Comp | <<locked>> | 80% | 40,001 psi | 84% | 2385 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 37,304 psi | 78% | 2425 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 32,140 psi | 67% | 2247 fps | 96% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,708 psi | 73% | 2300 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 94% | 38,682 psi | 81% | 2434 fps | 95.6% |
| Alliant Reloder-17 | 49.2 gr | 86% | 33,837 psi | 71% | 2356 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,594 psi | 79% | 2362 fps | 95.5% |
| Bofors RP3 | 44.1 gr | 80% | 31,459 psi | 66% | 2244 fps | 95.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,812 psi | 81% | 2392 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 86% | 39,668 psi | 83% | 2398 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 39,059 psi | 82% | 2379 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 33,185 psi | 69% | 2290 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,853 psi | 73% | 2343 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,860 psi | 54% | 1394 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,710 psi | 79% | 2339 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 38,014 psi | 79% | 2382 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,606 psi | 72% | 2257 fps | 95.2% |
| IMR 4831 | <<locked>> | 94% | 36,608 psi | 76% | 2382 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 35,476 psi | 74% | 2329 fps | 96.2% |
| Lovex D073.6 | <<locked>> | 80% | 37,115 psi | 78% | 2349 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 39,450 psi | 82% | 2316 fps | 97.3% |
| Lovex S062 | <<locked>> | 80% | 34,330 psi | 72% | 2267 fps | 97.2% |
| Norma 201 | <<locked>> | 80% | 38,145 psi | 80% | 2329 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 38,087 psi | 80% | 2343 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 34,069 psi | 71% | 2293 fps | 95.7% |
| Norma URP | <<locked>> | 94% | 38,508 psi | 80% | 2428 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 33,431 psi | 70% | 2297 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,784 psi | 83% | 2398 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,136 psi | 55% | 1427 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 35,665 psi | 75% | 2385 fps | 95.5% |
| ReloadSwiss RS 60 | 45.7 gr | 80% | 29,588 psi | 62% | 2254 fps | 96.5% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 40,379 psi | 84% | 2490 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 36,172 psi | 76% | 2283 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 31,589 psi | 66% | 2241 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,115 psi | 78% | 2349 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 34,330 psi | 72% | 2267 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 35,056 psi | 73% | 2339 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,246 psi | 78% | 2336 fps | 96.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,624 psi | 83% | 2297 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,561 psi | 68% | 2175 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 39,291 psi | 82% | 2303 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 38,261 psi | 80% | 2349 fps | 96.8% |
| Somchem S355 | <<locked>> | 82% | 32,663 psi | 68% | 2251 fps | 95.7% |
| Somchem S365 | <<locked>> | 88% | 28,413 psi | 59% | 2224 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 39,769 psi | 83% | 2300 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 35,114 psi | 73% | 2280 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,969 psi | 75% | 2283 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 29,022 psi | 61% | 2149 fps | 95.9% |
| Vihtavuori N160 | <<locked>> | 92% | 37,855 psi | 79% | 2379 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 34,534 psi | 72% | 2270 fps | 99% |
| Vihtavuori N550 | <<locked>> | 94% | 39,436 psi | 82% | 2428 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 33,852 psi | 71% | 2267 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 39,552 psi | 83% | 2411 fps | 99.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,492 psi | 76% | 2339 fps | 97.1% |
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 83 powders for 8 x 57 IRS loaded with the .322 | 196gr | Prvi Partizan SP. ReloadSwiss RS 62 delivers the highest muzzle velocity at 2,549 fps; across all powders the maximum-charge window runs from 1,562 fps to 2,549 fps. Alliant Reloder-23 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 61–90 %, leaving at least 10 % headroom. The 196.0 gr projectile in 0.322" calls for a 1:16.0 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, Bofors RP3 rank at the top here: for 8 x 57 IRS with the .322 | 196gr | Prvi Partizan SP 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.