Load Specifications
Load data in caliber 8 x 57 IS with .323 | 200gr | Sako Hammerhead bullet and 86 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 Power Pro 2000-MR.
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>> | 86% | 49,356 psi | 87% | 2421 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 50,850 psi | 90% | 2484 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 49,443 psi | 87% | 2474 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 48,704 psi | 86% | 2490 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 49,182 psi | 87% | 2510 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 44,469 psi | 79% | 2503 fps | 97.2% |
| ADI AR 2206H | <<locked>> | 88% | 48,356 psi | 85% | 2493 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 94% | 49,298 psi | 87% | 2490 fps | 98.5% |
| ADI Benchmark 8208 | <<locked>> | 88% | 50,850 psi | 90% | 2503 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 88% | 50,285 psi | 89% | 2487 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 48,965 psi | 87% | 2543 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 50,502 psi | 89% | 2631 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 48,254 psi | 85% | 2510 fps | 99.4% |
| Alliant Reloder-10x | <<locked>> | 82% | 49,530 psi | 88% | 2431 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 49,168 psi | 87% | 2526 fps | 98.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 44,976 psi | 80% | 2513 fps | 97.3% |
| Alliant Reloder-17 | <<locked>> | 98% | 48,385 psi | 86% | 2602 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 50,836 psi | 90% | 2549 fps | 98.4% |
| Bofors RP3 | <<locked>> | 94% | 48,066 psi | 85% | 2516 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 50,082 psi | 89% | 2451 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 88% | 49,327 psi | 87% | 2526 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 86% | 50,807 psi | 90% | 2608 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 82% | 48,095 psi | 85% | 2457 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 48,994 psi | 87% | 2480 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 49,893 psi | 88% | 2530 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 88% | 48,762 psi | 86% | 2503 fps | 99.3% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,973 psi | 72% | 2408 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 50,183 psi | 89% | 2575 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,635 psi | 61% | 1522 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 50,067 psi | 89% | 2507 fps | 99.4% |
| IMR 3031 | <<locked>> | 90% | 51,097 psi | 90% | 2543 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 48,849 psi | 86% | 2477 fps | 98.6% |
| IMR 4198 | <<locked>> | 82% | 50,125 psi | 89% | 2395 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 42,772 psi | 76% | 2457 fps | 96.8% |
| IMR 4895 | <<locked>> | 92% | 50,357 psi | 89% | 2556 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 88% | 50,850 psi | 90% | 2503 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 84% | 50,647 psi | 90% | 2490 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 50,328 psi | 89% | 2523 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 48,762 psi | 86% | 2434 fps | 98.9% |
| Lovex S062 | <<locked>> | 92% | 48,254 psi | 85% | 2477 fps | 99.6% |
| Lovex S065ᴾ | <<locked>> | 100% | 50,212 psi | 89% | 2507 fps | 96.8% |
| Norma 201 | <<locked>> | 90% | 50,256 psi | 89% | 2493 fps | 99.7% |
| Norma 202 | <<locked>> | 90% | 50,633 psi | 90% | 2503 fps | 100% |
| Norma 203B | <<locked>> | 92% | 48,341 psi | 85% | 2516 fps | 98.9% |
| Norma URPᴾ | <<locked>> | 100% | 44,904 psi | 79% | 2503 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 92% | 48,225 psi | 85% | 2533 fps | 98.8% |
| Ramshot TAC | <<locked>> | 86% | 47,848 psi | 85% | 2457 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 88% | 50,154 psi | 89% | 2530 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 84% | 48,907 psi | 86% | 2457 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,838 psi | 62% | 1558 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 50,676 psi | 90% | 2490 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 50,647 psi | 90% | 2510 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 48,544 psi | 86% | 2579 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 48,370 psi | 86% | 2612 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 44,411 psi | 79% | 2523 fps | 96.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 45,803 psi | 81% | 2539 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 86% | 48,530 psi | 86% | 2441 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 50,792 psi | 90% | 2493 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 98% | 51,082 psi | 90% | 2552 fps | 99.6% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 50,212 psi | 89% | 2507 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 90% | 50,328 psi | 89% | 2523 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 48,254 psi | 85% | 2477 fps | 99.6% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 50,444 psi | 89% | 2461 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 49,806 psi | 88% | 2566 fps | 99% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 50,357 psi | 89% | 2448 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 49,037 psi | 87% | 2484 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 49,908 psi | 88% | 2513 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 49,371 psi | 87% | 2408 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 48,936 psi | 87% | 2408 fps | 100% |
| Somchem S321 | <<locked>> | 84% | 48,312 psi | 85% | 2484 fps | 99.7% |
| Somchem S335 | <<locked>> | 88% | 48,515 psi | 86% | 2408 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 48,675 psi | 86% | 2484 fps | 98.8% |
| Somchem S355 | <<locked>> | 96% | 48,979 psi | 87% | 2513 fps | 99.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,784 psi | 70% | 2454 fps | 98.9% |
| Vihtavuori N130 | <<locked>> | 84% | 49,313 psi | 87% | 2382 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 49,342 psi | 87% | 2398 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 49,676 psi | 88% | 2467 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 50,821 psi | 90% | 2480 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 50,067 psi | 89% | 2497 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 47,239 psi | 84% | 2500 fps | 97.4% |
| Vihtavuori N530 | <<locked>> | 86% | 47,906 psi | 85% | 2454 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 92% | 49,124 psi | 87% | 2477 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 46,108 psi | 82% | 2503 fps | 97.1% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 48,544 psi | 86% | 2493 fps | 99.2% |
| Winchester 748 | <<locked>> | 88% | 50,111 psi | 89% | 2543 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 90% | 49,313 psi | 87% | 2520 fps | 99.4% |
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% | 40,973 psi | 72% | 2297 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 44,425 psi | 79% | 2388 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,431 psi | 59% | 2218 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 39,697 psi | 70% | 2346 fps | 99.5% |
| Accurate 4064 | <<locked>> | 80% | 31,662 psi | 56% | 2201 fps | 98.8% |
| Accurate 4350 | <<locked>> | 96% | 38,609 psi | 68% | 2402 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 37,579 psi | 66% | 2300 fps | 96.6% |
| ADI AR 2208 | <<locked>> | 84% | 36,289 psi | 64% | 2257 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,537 psi | 70% | 2316 fps | 98.3% |
| Alliant AR-Comp | <<locked>> | 80% | 38,580 psi | 68% | 2323 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,658 psi | 81% | 2490 fps | 99% |
| Alliant Power Pro 2000-MR | 46.5 gr | 84% | 38,740 psi | 68% | 2411 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,125 psi | 55% | 2185 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,543 psi | 82% | 2388 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 35,868 psi | 63% | 2287 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 96% | 39,697 psi | 70% | 2411 fps | 95.8% |
| Alliant Reloder-17 | 47.9 gr | 88% | 34,809 psi | 62% | 2336 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 38,914 psi | 69% | 2346 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 30,313 psi | 54% | 2182 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,727 psi | 74% | 2313 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,507 psi | 66% | 2326 fps | 98.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 41,292 psi | 73% | 2444 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 80% | 45,165 psi | 80% | 2415 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,847 psi | 81% | 2434 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 40,973 psi | 72% | 2379 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 37,811 psi | 67% | 2313 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 34,084 psi | 60% | 2267 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,866 psi | 60% | 2277 fps | 96.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,730 psi | 45% | 1358 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,492 psi | 65% | 2270 fps | 96.8% |
| IMR 3031 | <<locked>> | 80% | 36,680 psi | 65% | 2316 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 35,737 psi | 63% | 2241 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 47,050 psi | 83% | 2352 fps | 100% |
| IMR 4831 | <<locked>> | 96% | 37,536 psi | 66% | 2359 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 34,258 psi | 61% | 2264 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 80% | 39,537 psi | 70% | 2316 fps | 98.3% |
| Lovex D073.5 | <<locked>> | 80% | 44,309 psi | 78% | 2395 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 35,897 psi | 63% | 2287 fps | 98.9% |
| Lovex S060 | <<locked>> | 80% | 38,464 psi | 68% | 2254 fps | 96.9% |
| Lovex S062 | <<locked>> | 80% | 33,301 psi | 59% | 2205 fps | 96.8% |
| Lovex S065 | <<locked>> | 96% | 44,527 psi | 79% | 2415 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 36,854 psi | 65% | 2264 fps | 97.8% |
| Norma 202 | <<locked>> | 80% | 37,014 psi | 65% | 2280 fps | 99.5% |
| Norma 203B | <<locked>> | 80% | 32,909 psi | 58% | 2224 fps | 95.1% |
| Norma URP | <<locked>> | 96% | 39,508 psi | 70% | 2405 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 82% | 34,722 psi | 61% | 2283 fps | 95.4% |
| Ramshot TAC | <<locked>> | 82% | 42,148 psi | 75% | 2359 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,551 psi | 68% | 2329 fps | 96.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,830 psi | 76% | 2359 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,005 psi | 46% | 1391 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,353 psi | 78% | 2395 fps | 99.8% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 47,398 psi | 84% | 2461 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 37,014 psi | 65% | 2372 fps | 95.8% |
| ReloadSwiss RS 60 | 43.6 gr | 80% | 28,790 psi | 51% | 2192 fps | 95.8% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 38,827 psi | 69% | 2418 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 42,844 psi | 76% | 2484 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 40,785 psi | 72% | 2316 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 80% | 35,056 psi | 62% | 2221 fps | 97.3% |
| Rottweil R 903 | <<locked>> | 82% | 30,429 psi | 54% | 2175 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 96% | 44,527 psi | 79% | 2415 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,897 psi | 63% | 2287 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 33,301 psi | 59% | 2205 fps | 96.8% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,833 psi | 83% | 2408 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 33,808 psi | 60% | 2267 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 47,224 psi | 83% | 2405 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 40,059 psi | 71% | 2333 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,172 psi | 64% | 2274 fps | 96.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,667 psi | 68% | 2238 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,720 psi | 56% | 2116 fps | 99.2% |
| Somchem S321 | <<locked>> | 80% | 42,366 psi | 75% | 2388 fps | 99% |
| Somchem S335 | <<locked>> | 80% | 38,014 psi | 67% | 2241 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 37,086 psi | 66% | 2283 fps | 96.3% |
| Somchem S355 | <<locked>> | 82% | 31,531 psi | 56% | 2185 fps | 95.1% |
| Somchem S365 | <<locked>> | 90% | 29,269 psi | 52% | 2208 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 43,888 psi | 78% | 2306 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,798 psi | 69% | 2241 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,055 psi | 60% | 2218 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 34,911 psi | 62% | 2224 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 80% | 28,137 psi | 50% | 2090 fps | 95.3% |
| Vihtavuori N160 | <<locked>> | 94% | 39,030 psi | 69% | 2359 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 39,523 psi | 70% | 2313 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 80% | 33,417 psi | 59% | 2208 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 96% | 40,524 psi | 72% | 2408 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 32,909 psi | 58% | 2201 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 38,421 psi | 68% | 2349 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,244 psi | 62% | 2274 fps | 96.6% |
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 IS loaded with the .323 | 200gr | Sako Hammerhead. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,631 fps; across all powders the maximum-charge window runs from 1,522 fps to 2,631 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 (390 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.323" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, 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, Alliant Power Pro 2000-MR rank at the top here: for 8 x 57 IS with the .323 | 200gr | Sako Hammerhead 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.