Load Specifications
Load data in caliber 8 x 57 IS with .323 | 180gr | Hornady ECX bullet and 80 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, Hodgdon CFE223 and ReloadSwiss RS 52.
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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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>> | 90% | 50,966 psi | 90% | 2595 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 49,168 psi | 87% | 2608 fps | 99.9% |
| Accurate 2495 | <<locked>> | 96% | 50,082 psi | 89% | 2638 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 50,212 psi | 89% | 2661 fps | 99.9% |
| Accurate 4064 | <<locked>> | 98% | 50,038 psi | 88% | 2677 fps | 100% |
| Accurate LT-30 | <<locked>> | 82% | 48,878 psi | 86% | 2507 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 49,298 psi | 87% | 2526 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 92% | 50,009 psi | 88% | 2664 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 98% | 51,140 psi | 90% | 2657 fps | 97.9% |
| ADI AR 2219 | <<locked>> | 82% | 48,109 psi | 85% | 2608 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 49,516 psi | 88% | 2625 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 90% | 48,399 psi | 86% | 2621 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 50,502 psi | 89% | 2720 fps | 98.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 49,269 psi | 87% | 2746 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 49,501 psi | 88% | 2671 fps | 99% |
| Alliant Reloder-10x | <<locked>> | 84% | 48,211 psi | 85% | 2566 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 50,560 psi | 89% | 2690 fps | 98% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 46,818 psi | 83% | 2710 fps | 98.2% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 50,923 psi | 90% | 2549 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 49,487 psi | 87% | 2667 fps | 97.2% |
| Bofors RP3 | <<locked>> | 98% | 49,298 psi | 87% | 2680 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 88% | 49,110 psi | 87% | 2575 fps | 99.4% |
| Hodgdon BL-C2 | <<locked>> | 92% | 51,097 psi | 90% | 2700 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 88% | 49,371 psi | 87% | 2730 fps | 97.8% |
| Hodgdon H322 | <<locked>> | 86% | 50,299 psi | 89% | 2638 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 51,039 psi | 90% | 2661 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 48,037 psi | 85% | 2638 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 92% | 50,372 psi | 89% | 2674 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 48,631 psi | 86% | 2697 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,808 psi | 60% | 1604 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 48,718 psi | 86% | 2628 fps | 98.5% |
| IMR 3031 | <<locked>> | 92% | 49,197 psi | 87% | 2674 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 50,372 psi | 89% | 2641 fps | 98% |
| IMR 4198 | <<locked>> | 84% | 49,226 psi | 87% | 2536 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 48,718 psi | 86% | 2677 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 90% | 49,516 psi | 88% | 2625 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 86% | 48,950 psi | 87% | 2612 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 92% | 48,269 psi | 85% | 2644 fps | 99.8% |
| Lovex S060 | <<locked>> | 92% | 50,995 psi | 90% | 2605 fps | 98.5% |
| Lovex S062 | <<locked>> | 96% | 49,385 psi | 87% | 2638 fps | 99.2% |
| Norma 200 | <<locked>> | 82% | 50,937 psi | 90% | 2582 fps | 100% |
| Norma 201 | <<locked>> | 92% | 48,544 psi | 86% | 2612 fps | 99.1% |
| Norma 202 | <<locked>> | 92% | 48,965 psi | 87% | 2628 fps | 100% |
| Norma 203B | <<locked>> | 96% | 49,632 psi | 88% | 2680 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 96% | 49,951 psi | 88% | 2703 fps | 98.2% |
| Ramshot TAC | <<locked>> | 90% | 50,256 psi | 89% | 2631 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 90% | 48,878 psi | 86% | 2651 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 88% | 50,995 psi | 90% | 2628 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,098 psi | 60% | 1647 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 49,385 psi | 87% | 2618 fps | 99.8% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 50,009 psi | 88% | 2749 fps | 97.9% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 50,125 psi | 89% | 2782 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 49,792 psi | 88% | 2612 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 49,037 psi | 87% | 2612 fps | 99.1% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 49,153 psi | 87% | 2671 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 92% | 48,269 psi | 85% | 2644 fps | 99.8% |
| Shooters World Precision | <<locked>> | 96% | 49,385 psi | 87% | 2638 fps | 99.2% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 49,487 psi | 87% | 2589 fps | 98.9% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 48,617 psi | 86% | 2615 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 48,254 psi | 85% | 2680 fps | 98% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 49,182 psi | 87% | 2582 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 47,630 psi | 84% | 2598 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 48,515 psi | 86% | 2635 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 48,399 psi | 86% | 2536 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 50,705 psi | 90% | 2575 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 50,401 psi | 89% | 2661 fps | 99.4% |
| Somchem S335 | <<locked>> | 92% | 49,995 psi | 88% | 2575 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 50,647 psi | 90% | 2654 fps | 98.3% |
| Somchem S355ᴾ | <<locked>> | 100% | 50,169 psi | 89% | 2674 fps | 98.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,868 psi | 63% | 2497 fps | 96.7% |
| Vihtavuori N130 | <<locked>> | 86% | 48,457 psi | 86% | 2520 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 48,312 psi | 85% | 2533 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 50,966 psi | 90% | 2641 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 49,385 psi | 87% | 2608 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 48,559 psi | 86% | 2615 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 90% | 50,140 psi | 89% | 2628 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 96% | 50,807 psi | 90% | 2648 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 44,411 psi | 79% | 2552 fps | 97.6% |
| Winchester 748 | <<locked>> | 90% | 48,718 psi | 86% | 2667 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 94% | 51,184 psi | 90% | 2694 fps | 99% |
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% | 37,028 psi | 65% | 2372 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 40,103 psi | 71% | 2457 fps | 99.2% |
| Accurate 2495 | <<locked>> | 80% | 29,008 psi | 51% | 2260 fps | 99.2% |
| Accurate 2520 | <<locked>> | 80% | 35,491 psi | 63% | 2405 fps | 98% |
| Accurate 4064 | <<locked>> | 80% | 27,514 psi | 49% | 2234 fps | 96.5% |
| Accurate LT-30 | <<locked>> | 80% | 46,006 psi | 81% | 2464 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 46,383 psi | 82% | 2480 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 36,318 psi | 64% | 2408 fps | 95% |
| ADI AR 2208 | <<locked>> | 90% | 39,726 psi | 70% | 2457 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 44,918 psi | 79% | 2556 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,158 psi | 64% | 2382 fps | 96.4% |
| Alliant AR-Comp | <<locked>> | 80% | 34,447 psi | 61% | 2395 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 41,495 psi | 73% | 2559 fps | 97.3% |
| Alliant Power Pro 2000-MR | 50.8 gr | 90% | 43,134 psi | 76% | 2631 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 33,692 psi | 60% | 2375 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 42,496 psi | 75% | 2474 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 39,131 psi | 69% | 2487 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 94% | 38,363 psi | 68% | 2539 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 44,686 psi | 79% | 2457 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 43,149 psi | 76% | 2562 fps | 95.7% |
| Bofors RP3 | <<locked>> | 86% | 32,677 psi | 58% | 2369 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,319 psi | 68% | 2385 fps | 97.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,620 psi | 59% | 2379 fps | 96.3% |
| Hodgdon CFE223 | 47.3 gr | 82% | 39,929 psi | 71% | 2552 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 41,075 psi | 73% | 2490 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 80% | 41,742 psi | 74% | 2510 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 94% | 44,831 psi | 79% | 2582 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 82% | 36,521 psi | 65% | 2418 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 34,925 psi | 62% | 2431 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,121 psi | 44% | 1437 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 35,462 psi | 63% | 2379 fps | 95.2% |
| IMR 3031 | <<locked>> | 80% | 32,750 psi | 58% | 2379 fps | 99.3% |
| IMR 4064 | <<locked>> | 88% | 39,218 psi | 69% | 2444 fps | 95.3% |
| IMR 4198 | <<locked>> | 80% | 43,627 psi | 77% | 2451 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 37,405 psi | 66% | 2464 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 36,158 psi | 64% | 2382 fps | 96.4% |
| Lovex D073.5 | <<locked>> | 80% | 39,668 psi | 70% | 2454 fps | 98.3% |
| Lovex D073.6 | <<locked>> | 80% | 31,676 psi | 56% | 2329 fps | 96.9% |
| Lovex S060 | <<locked>> | 82% | 37,463 psi | 66% | 2362 fps | 95.4% |
| Lovex S062 | <<locked>> | 84% | 33,982 psi | 60% | 2349 fps | 95.8% |
| Norma 200 | <<locked>> | 80% | 47,601 psi | 84% | 2533 fps | 100% |
| Norma 201 | <<locked>> | 80% | 33,156 psi | 59% | 2316 fps | 95.5% |
| Norma 202 | <<locked>> | 80% | 33,301 psi | 59% | 2339 fps | 98% |
| Norma 203B | <<locked>> | 88% | 38,406 psi | 68% | 2477 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 88% | 38,145 psi | 67% | 2484 fps | 95.2% |
| Ramshot TAC | <<locked>> | 88% | 46,891 psi | 83% | 2575 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 82% | 37,289 psi | 66% | 2438 fps | 95.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,233 psi | 69% | 2421 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,019 psi | 44% | 1467 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,640 psi | 72% | 2467 fps | 98.8% |
| ReloadSwiss RS 52 | 48.1 gr | 88% | 40,582 psi | 72% | 2579 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 31,575 psi | 56% | 2385 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 36,564 psi | 65% | 2375 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 82% | 33,721 psi | 60% | 2323 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 90% | 34,998 psi | 62% | 2411 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,676 psi | 56% | 2329 fps | 96.9% |
| Shooters World Precision | <<locked>> | 84% | 33,982 psi | 60% | 2349 fps | 95.8% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 42,975 psi | 76% | 2480 fps | 97.8% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 45,527 psi | 80% | 2566 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 39,610 psi | 70% | 2523 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 43,337 psi | 77% | 2490 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 44,541 psi | 79% | 2546 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 37,275 psi | 66% | 2428 fps | 95.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,317 psi | 62% | 2306 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,660 psi | 51% | 2172 fps | 97.5% |
| Somchem S321 | <<locked>> | 80% | 38,406 psi | 68% | 2451 fps | 97.4% |
| Somchem S335 | <<locked>> | 80% | 34,476 psi | 61% | 2306 fps | 98.9% |
| Somchem S341 | <<locked>> | 84% | 38,537 psi | 68% | 2444 fps | 95.5% |
| Somchem S355 | <<locked>> | 90% | 36,419 psi | 64% | 2425 fps | 95.7% |
| Somchem S365 | <<locked>> | 98% | 33,533 psi | 59% | 2441 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 40,263 psi | 71% | 2392 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,346 psi | 62% | 2313 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 80% | 30,298 psi | 54% | 2277 fps | 99.4% |
| Vihtavuori N140 | <<locked>> | 80% | 31,401 psi | 56% | 2280 fps | 97.8% |
| Vihtavuori N150 | <<locked>> | 86% | 30,385 psi | 54% | 2270 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 35,781 psi | 63% | 2369 fps | 96.4% |
| Vihtavuori N540 | <<locked>> | 80% | 30,124 psi | 53% | 2260 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 36,405 psi | 64% | 2395 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 34,447 psi | 61% | 2402 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 36,361 psi | 64% | 2428 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 104 powders for 8 x 57 IS loaded with the .323 | 180gr | Hornady ECX. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,782 fps; across all powders the maximum-charge window runs from 1,604 fps to 2,782 fps. Accurate 4350 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.323" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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. Alliant Power Pro 2000-MR, Hodgdon CFE223, ReloadSwiss RS 52 rank at the top here: for 8 x 57 IS with the .323 | 180gr | Hornady ECX they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 4350, Alliant Reloder-16 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.