Load Specifications
Load data in caliber 8 x 57 IS with .323 | 180gr | Barnes X S bullet and 77 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, ReloadSwiss RS 60 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>> | 86% | 49,153 psi | 87% | 2533 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 50,604 psi | 89% | 2592 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 50,140 psi | 89% | 2598 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 48,182 psi | 85% | 2595 fps | 99.8% |
| Accurate 4064 | <<locked>> | 94% | 49,559 psi | 88% | 2628 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 50,763 psi | 90% | 2641 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 96% | 51,126 psi | 90% | 2628 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 88% | 50,024 psi | 88% | 2602 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 88% | 49,008 psi | 87% | 2598 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 48,138 psi | 85% | 2644 fps | 98.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 49,269 psi | 87% | 2717 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 50,502 psi | 89% | 2654 fps | 99% |
| Alliant Reloder-10x | <<locked>> | 82% | 49,211 psi | 87% | 2543 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 48,370 psi | 86% | 2621 fps | 97.4% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 50,328 psi | 89% | 2740 fps | 98.6% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 50,720 psi | 90% | 2520 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 49,516 psi | 88% | 2638 fps | 97% |
| Bofors RP3 | <<locked>> | 96% | 50,604 psi | 89% | 2667 fps | 99% |
| Hodgdon Benchmark | <<locked>> | 86% | 49,487 psi | 87% | 2549 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 88% | 48,414 psi | 86% | 2625 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 86% | 49,443 psi | 87% | 2697 fps | 97.7% |
| Hodgdon H322 | <<locked>> | 84% | 50,459 psi | 89% | 2612 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 48,124 psi | 85% | 2582 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 94% | 49,037 psi | 87% | 2618 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 90% | 51,155 psi | 90% | 2654 fps | 98.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 40,669 psi | 72% | 2493 fps | 96.4% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 49,153 psi | 87% | 2674 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,012 psi | 62% | 1604 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 49,081 psi | 87% | 2602 fps | 98.4% |
| IMR 3031 | <<locked>> | 90% | 49,835 psi | 88% | 2651 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 50,836 psi | 90% | 2615 fps | 97.9% |
| IMR 4198 | <<locked>> | 82% | 49,240 psi | 87% | 2507 fps | 100% |
| IMR 4895 | <<locked>> | 92% | 49,429 psi | 87% | 2654 fps | 98.2% |
| IMR 8208 XBR | <<locked>> | 88% | 50,024 psi | 88% | 2602 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 84% | 50,386 psi | 89% | 2595 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 90% | 49,603 psi | 88% | 2628 fps | 99.8% |
| Lovex S060 | <<locked>> | 88% | 48,443 psi | 86% | 2533 fps | 97.9% |
| Lovex S062 | <<locked>> | 94% | 50,546 psi | 89% | 2621 fps | 99.2% |
| Norma 201 | <<locked>> | 90% | 50,241 psi | 89% | 2602 fps | 99.1% |
| Norma 202 | <<locked>> | 90% | 49,850 psi | 88% | 2608 fps | 100% |
| Norma 203B | <<locked>> | 94% | 50,589 psi | 89% | 2661 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 94% | 50,488 psi | 89% | 2680 fps | 98.1% |
| Ramshot TAC | <<locked>> | 88% | 50,401 psi | 89% | 2602 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 88% | 49,298 psi | 87% | 2625 fps | 98% |
| Ramshot X-Terminator | <<locked>> | 84% | 48,269 psi | 85% | 2552 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,273 psi | 62% | 1644 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 49,821 psi | 88% | 2592 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 50,459 psi | 89% | 2723 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 50,256 psi | 89% | 2753 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 86% | 49,240 psi | 87% | 2559 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 92% | 50,502 psi | 89% | 2598 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 98% | 50,473 psi | 89% | 2654 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 90% | 49,603 psi | 88% | 2628 fps | 99.8% |
| Shooters World Precision | <<locked>> | 94% | 50,546 psi | 89% | 2621 fps | 99.2% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 49,661 psi | 88% | 2559 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 48,559 psi | 86% | 2654 fps | 97.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 49,458 psi | 87% | 2552 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 48,602 psi | 86% | 2579 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 48,994 psi | 87% | 2612 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 48,834 psi | 86% | 2510 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 50,966 psi | 90% | 2549 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 51,039 psi | 90% | 2635 fps | 99.4% |
| Somchem S335 | <<locked>> | 88% | 48,182 psi | 85% | 2513 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 50,720 psi | 90% | 2625 fps | 98.1% |
| Somchem S355 | <<locked>> | 98% | 51,126 psi | 90% | 2654 fps | 98.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 39,595 psi | 70% | 2543 fps | 97.6% |
| Vihtavuori N130 | <<locked>> | 84% | 49,124 psi | 87% | 2493 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 48,588 psi | 86% | 2507 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 48,863 psi | 86% | 2579 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 50,111 psi | 89% | 2589 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 49,298 psi | 87% | 2595 fps | 99.3% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 46,470 psi | 82% | 2592 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 88% | 50,343 psi | 89% | 2602 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 92% | 48,588 psi | 86% | 2585 fps | 99.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,500 psi | 84% | 2575 fps | 98% |
| Winchester 748 | <<locked>> | 88% | 49,182 psi | 87% | 2644 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 90% | 48,211 psi | 85% | 2615 fps | 98.4% |
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% | 41,539 psi | 73% | 2411 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 44,860 psi | 79% | 2500 fps | 99.6% |
| Accurate 2495 | <<locked>> | 80% | 35,070 psi | 62% | 2339 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 39,813 psi | 70% | 2448 fps | 98.8% |
| Accurate 4064 | <<locked>> | 80% | 33,098 psi | 59% | 2320 fps | 98.2% |
| ADI AR 2206H | <<locked>> | 80% | 37,898 psi | 67% | 2402 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 88% | 40,770 psi | 72% | 2444 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,682 psi | 70% | 2415 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 80% | 38,247 psi | 68% | 2431 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 45,368 psi | 80% | 2595 fps | 98% |
| Alliant Power Pro 2000-MR | 48.8 gr | 88% | 43,497 psi | 77% | 2605 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 35,302 psi | 62% | 2372 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 46,369 psi | 82% | 2500 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 40,596 psi | 72% | 2480 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 90% | 37,217 psi | 66% | 2477 fps | 95% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,543 psi | 84% | 2474 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 43,859 psi | 78% | 2539 fps | 95.7% |
| Bofors RP3 | <<locked>> | 84% | 34,983 psi | 62% | 2375 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,597 psi | 74% | 2411 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,681 psi | 67% | 2428 fps | 97.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 40,799 psi | 72% | 2536 fps | 95.4% |
| Hodgdon H322 | <<locked>> | 80% | 44,527 psi | 79% | 2516 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 45,208 psi | 80% | 2536 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 46,311 psi | 82% | 2572 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 38,087 psi | 67% | 2411 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 38,421 psi | 68% | 2448 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 36,129 psi | 64% | 2418 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,976 psi | 46% | 1430 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,448 psi | 64% | 2365 fps | 95.4% |
| IMR 3031 | <<locked>> | 80% | 36,767 psi | 65% | 2425 fps | 99.8% |
| IMR 4064 | <<locked>> | 86% | 40,422 psi | 71% | 2431 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 46,644 psi | 82% | 2467 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 36,753 psi | 65% | 2411 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 39,682 psi | 70% | 2415 fps | 97.2% |
| Lovex D073.5 | <<locked>> | 80% | 44,411 psi | 79% | 2500 fps | 98.9% |
| Lovex D073.6 | <<locked>> | 80% | 36,172 psi | 64% | 2385 fps | 98% |
| Lovex S060 | <<locked>> | 80% | 38,508 psi | 68% | 2346 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 33,823 psi | 60% | 2303 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 37,681 psi | 67% | 2372 fps | 96.7% |
| Norma 202 | <<locked>> | 80% | 37,159 psi | 66% | 2382 fps | 98.8% |
| Norma 203B | <<locked>> | 84% | 37,681 psi | 67% | 2421 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 86% | 39,233 psi | 69% | 2474 fps | 95.3% |
| Ramshot TAC | <<locked>> | 86% | 47,485 psi | 84% | 2552 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,319 psi | 68% | 2421 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 42,844 psi | 76% | 2457 fps | 96.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,324 psi | 47% | 1467 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 44,237 psi | 78% | 2500 fps | 99.2% |
| ReloadSwiss RS 52 | 45.2 gr | 84% | 39,233 psi | 69% | 2513 fps | 95% |
| ReloadSwiss RS 60 | 44.8 gr | 82% | 31,067 psi | 55% | 2329 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 41,684 psi | 74% | 2428 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 80% | 35,984 psi | 64% | 2326 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 86% | 35,143 psi | 62% | 2372 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,172 psi | 64% | 2385 fps | 98% |
| Shooters World Precision | <<locked>> | 80% | 33,823 psi | 60% | 2303 fps | 95.5% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 46,572 psi | 82% | 2507 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 38,232 psi | 68% | 2457 fps | 95.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 46,586 psi | 82% | 2510 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 45,658 psi | 81% | 2530 fps | 95.1% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 38,479 psi | 68% | 2415 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,899 psi | 69% | 2339 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,039 psi | 57% | 2215 fps | 98.4% |
| Somchem S321 | <<locked>> | 80% | 42,134 psi | 74% | 2484 fps | 98.1% |
| Somchem S335 | <<locked>> | 80% | 38,624 psi | 68% | 2349 fps | 99.4% |
| Somchem S341 | <<locked>> | 82% | 39,508 psi | 70% | 2428 fps | 95.6% |
| Somchem S355 | <<locked>> | 86% | 36,143 psi | 64% | 2379 fps | 95.3% |
| Somchem S365 | <<locked>> | 94% | 33,315 psi | 59% | 2395 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 43,816 psi | 77% | 2415 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,696 psi | 68% | 2343 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,287 psi | 61% | 2323 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 35,070 psi | 62% | 2320 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 84% | 32,401 psi | 57% | 2277 fps | 95.6% |
| Vihtavuori N160 | <<locked>> | 98% | 43,555 psi | 77% | 2539 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 39,450 psi | 70% | 2408 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 80% | 33,895 psi | 60% | 2310 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 37,405 psi | 66% | 2385 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 38,145 psi | 67% | 2444 fps | 97.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,244 psi | 62% | 2365 fps | 95.1% |
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 103 powders for 8 x 57 IS loaded with the .323 | 180gr | Barnes X S. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,753 fps; across all powders the maximum-charge window runs from 1,604 fps to 2,753 fps. Accurate 4350 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.323" calls for a 1:14.0 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, ReloadSwiss RS 60, ReloadSwiss RS 52 rank at the top here: for 8 x 57 IS with the .323 | 180gr | Barnes X S they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Bofors RP7 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.