Load Specifications
Load data in caliber 8 x 57 IS with .323 | 160gr | RWS HIT bullet and 81 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, IMR 3031 and Hodgdon BL-C2.
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>> | 92% | 49,095 psi | 87% | 2707 fps | 100% |
| Accurate 2200 | <<locked>> | 84% | 50,169 psi | 89% | 2772 fps | 95.9% |
| Accurate 2230 | <<locked>> | 84% | 50,299 psi | 89% | 2779 fps | 96.4% |
| Accurate 2460 | <<locked>> | 90% | 50,705 psi | 90% | 2762 fps | 99.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 50,850 psi | 90% | 2792 fps | 100% |
| Accurate 2520 | <<locked>> | 92% | 48,022 psi | 85% | 2759 fps | 99.1% |
| Accurate 4064ᴾ | <<locked>> | 100% | 47,152 psi | 83% | 2769 fps | 99.6% |
| Accurate LT-30 | <<locked>> | 86% | 50,836 psi | 90% | 2667 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 48,254 psi | 85% | 2631 fps | 99% |
| ADI AR 2206H | <<locked>> | 96% | 51,184 psi | 90% | 2808 fps | 97.1% |
| ADI AR 2207 | <<locked>> | 82% | 48,312 psi | 85% | 2654 fps | 100% |
| ADI AR 2208ᴾ | <<locked>> | 100% | 48,863 psi | 86% | 2743 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 86% | 49,763 psi | 88% | 2769 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 94% | 51,053 psi | 90% | 2776 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 94% | 48,863 psi | 86% | 2779 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 88% | 48,472 psi | 86% | 2822 fps | 97.3% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 48,631 psi | 86% | 2772 fps | 97.2% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 47,021 psi | 83% | 2762 fps | 97.3% |
| Alliant Reloder-10x | <<locked>> | 88% | 49,371 psi | 87% | 2723 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 98% | 48,211 psi | 85% | 2779 fps | 95.9% |
| Alliant Reloder-7 | <<locked>> | 82% | 49,588 psi | 88% | 2667 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 86% | 49,487 psi | 87% | 2661 fps | 100% |
| Bofors RP3ᴾ | <<locked>> | 100% | 46,731 psi | 83% | 2769 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 92% | 50,575 psi | 89% | 2723 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 94% | 48,704 psi | 86% | 2795 fps | 98.4% |
| Hodgdon CFE223 | <<locked>> | 92% | 50,618 psi | 89% | 2874 fps | 96.4% |
| Hodgdon H322 | <<locked>> | 88% | 48,211 psi | 85% | 2746 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 88% | 49,327 psi | 87% | 2769 fps | 99.6% |
| Hodgdon H4198 | <<locked>> | 82% | 49,588 psi | 88% | 2664 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 94% | 48,443 psi | 86% | 2769 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 98% | 49,661 psi | 88% | 2838 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,315 psi | 59% | 1683 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 49,922 psi | 88% | 2772 fps | 97.3% |
| IMR 3031 | <<locked>> | 96% | 49,385 psi | 87% | 2822 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 48,312 psi | 85% | 2726 fps | 95.9% |
| IMR 4198 | <<locked>> | 88% | 50,473 psi | 89% | 2694 fps | 100% |
| IMR 4895 | <<locked>> | 98% | 49,371 psi | 87% | 2815 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 94% | 51,053 psi | 90% | 2776 fps | 98.2% |
| Lovex D073.4 | <<locked>> | 84% | 50,908 psi | 90% | 2776 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 90% | 50,807 psi | 90% | 2769 fps | 98.9% |
| Lovex D073.6 | <<locked>> | 96% | 49,052 psi | 87% | 2789 fps | 99.2% |
| Lovex S060 | <<locked>> | 94% | 49,327 psi | 87% | 2697 fps | 96.7% |
| Lovex S062ᴾ | <<locked>> | 100% | 50,502 psi | 89% | 2782 fps | 98.2% |
| Norma 200 | <<locked>> | 84% | 49,516 psi | 88% | 2703 fps | 100% |
| Norma 201 | <<locked>> | 96% | 49,864 psi | 88% | 2759 fps | 98.1% |
| Norma 202 | <<locked>> | 96% | 49,966 psi | 88% | 2779 fps | 99.6% |
| Norma 203Bᴾ | <<locked>> | 100% | 50,589 psi | 89% | 2822 fps | 97% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 51,126 psi | 90% | 2841 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 94% | 50,227 psi | 89% | 2799 fps | 96.8% |
| Ramshot X-Terminator | <<locked>> | 90% | 49,472 psi | 87% | 2723 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,576 psi | 59% | 1726 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 90% | 50,937 psi | 90% | 2772 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 98% | 50,763 psi | 90% | 2890 fps | 96.4% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 45,063 psi | 80% | 2802 fps | 98.3% |
| Rottweil R 901 | <<locked>> | 94% | 51,010 psi | 90% | 2762 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 98% | 50,111 psi | 89% | 2753 fps | 98.1% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 43,381 psi | 77% | 2700 fps | 96.1% |
| Shooters World AR Plus | <<locked>> | 84% | 50,908 psi | 90% | 2776 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 96% | 49,052 psi | 87% | 2789 fps | 99.2% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 50,502 psi | 89% | 2782 fps | 98.2% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 47,892 psi | 85% | 2684 fps | 97.3% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 49,588 psi | 88% | 2425 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 50,299 psi | 89% | 2776 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 88% | 50,212 psi | 89% | 2740 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 96% | 49,588 psi | 88% | 2776 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 49,676 psi | 88% | 2684 fps | 99.5% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 48,704 psi | 86% | 2677 fps | 99.9% |
| Somchem S321 | <<locked>> | 90% | 48,530 psi | 86% | 2756 fps | 98.1% |
| Somchem S335 | <<locked>> | 94% | 48,428 psi | 86% | 2680 fps | 99.8% |
| Somchem S341 | <<locked>> | 94% | 48,399 psi | 86% | 2740 fps | 96.3% |
| Somchem S355ᴾ | <<locked>> | 100% | 44,657 psi | 79% | 2707 fps | 96.2% |
| Vihtavuori N120 | <<locked>> | 82% | 48,370 psi | 86% | 2608 fps | 100% |
| Vihtavuori N130 | <<locked>> | 90% | 49,835 psi | 88% | 2677 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 49,182 psi | 87% | 2680 fps | 100% |
| Vihtavuori N135 | <<locked>> | 98% | 48,240 psi | 85% | 2746 fps | 100% |
| Vihtavuori N140 | <<locked>> | 98% | 50,459 psi | 89% | 2759 fps | 99.8% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 43,178 psi | 76% | 2651 fps | 97.2% |
| Vihtavuori N530 | <<locked>> | 92% | 48,066 psi | 85% | 2720 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 98% | 48,617 psi | 86% | 2746 fps | 99.4% |
| Winchester 748 | <<locked>> | 94% | 49,559 psi | 88% | 2815 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 96% | 48,834 psi | 86% | 2782 fps | 97.2% |
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% | 33,794 psi | 60% | 2425 fps | 98.9% |
| Accurate 2200 | <<locked>> | 82% | 46,775 psi | 83% | 2713 fps | 95.1% |
| Accurate 2230 | <<locked>> | 82% | 46,920 psi | 83% | 2723 fps | 95.6% |
| Accurate 2460 | <<locked>> | 80% | 36,172 psi | 64% | 2500 fps | 97.1% |
| Accurate 2495 | <<locked>> | 80% | 26,237 psi | 46% | 2303 fps | 97.1% |
| Accurate 2520 | <<locked>> | 80% | 31,705 psi | 56% | 2434 fps | 95.1% |
| Accurate 4064 | <<locked>> | 84% | 28,326 psi | 50% | 2369 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 42,279 psi | 75% | 2523 fps | 99.4% |
| Accurate LT-32 | <<locked>> | 80% | 42,641 psi | 75% | 2533 fps | 98.2% |
| ADI AR 2206H | <<locked>> | 90% | 42,438 psi | 75% | 2651 fps | 95% |
| ADI AR 2207 | <<locked>> | 80% | 45,658 psi | 81% | 2612 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 45,992 psi | 81% | 2690 fps | 95% |
| ADI AR 2219 | <<locked>> | 80% | 40,582 psi | 72% | 2612 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 86% | 39,581 psi | 70% | 2569 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 30,879 psi | 55% | 2441 fps | 99.9% |
| Alliant Power Pro 1200-R | 42.2 gr | 82% | 39,755 psi | 70% | 2648 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 40,263 psi | 71% | 2615 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 38,914 psi | 69% | 2608 fps | 95.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 38,522 psi | 68% | 2536 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 45,382 psi | 80% | 2726 fps | 95.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 46,615 psi | 82% | 2621 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 40,886 psi | 72% | 2516 fps | 99.4% |
| Bofors RP3 | <<locked>> | 94% | 38,203 psi | 68% | 2605 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 82% | 37,333 psi | 66% | 2477 fps | 95.6% |
| Hodgdon BL-C2 | 47.1 gr | 86% | 36,985 psi | 65% | 2572 fps | 95.6% |
| Hodgdon CFE223 | <<locked>> | 90% | 47,311 psi | 84% | 2815 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 37,057 psi | 66% | 2539 fps | 98.4% |
| Hodgdon H335 | <<locked>> | 80% | 37,637 psi | 67% | 2552 fps | 97.7% |
| Hodgdon H4198 | <<locked>> | 80% | 46,586 psi | 82% | 2615 fps | 99.6% |
| Hodgdon H4895 | <<locked>> | 88% | 40,103 psi | 71% | 2612 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 40,654 psi | 72% | 2667 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,772 psi | 44% | 1506 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 41,539 psi | 73% | 2621 fps | 95.3% |
| IMR 3031 | 39.8 gr | 80% | 29,617 psi | 52% | 2415 fps | 97.1% |
| IMR 4064 | <<locked>> | 96% | 45,426 psi | 80% | 2677 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 39,871 psi | 70% | 2520 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 43,627 psi | 77% | 2710 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 86% | 39,581 psi | 70% | 2569 fps | 95.6% |
| Lovex D073.4 | <<locked>> | 80% | 44,222 psi | 78% | 2664 fps | 98.3% |
| Lovex D073.5 | <<locked>> | 80% | 36,056 psi | 64% | 2497 fps | 95.7% |
| Lovex D073.6 | <<locked>> | 84% | 32,518 psi | 57% | 2467 fps | 95.4% |
| Lovex S060 | <<locked>> | 90% | 43,758 psi | 77% | 2598 fps | 95.3% |
| Lovex S062 | <<locked>> | 92% | 39,276 psi | 69% | 2579 fps | 95.7% |
| Norma 200 | <<locked>> | 80% | 43,729 psi | 77% | 2612 fps | 100% |
| Norma 201 | <<locked>> | 88% | 39,030 psi | 69% | 2559 fps | 95.6% |
| Norma 202 | <<locked>> | 80% | 30,081 psi | 53% | 2375 fps | 95.2% |
| Norma 203B | <<locked>> | 96% | 44,454 psi | 79% | 2717 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 96% | 44,744 psi | 79% | 2726 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 90% | 43,990 psi | 78% | 2687 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 86% | 43,453 psi | 77% | 2618 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,656 psi | 44% | 1539 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 36,985 psi | 65% | 2513 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 47,384 psi | 84% | 2831 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 36,985 psi | 65% | 2621 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 33,765 psi | 60% | 2425 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 90% | 39,160 psi | 69% | 2552 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 98% | 40,654 psi | 72% | 2648 fps | 95.4% |
| Shooters World AR Plus | <<locked>> | 80% | 44,222 psi | 78% | 2664 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 32,518 psi | 57% | 2467 fps | 95.4% |
| Shooters World Precision | <<locked>> | 92% | 39,276 psi | 69% | 2579 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 38,986 psi | 69% | 2520 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 47,152 psi | 83% | 2392 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 41,162 psi | 73% | 2615 fps | 98.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 39,102 psi | 69% | 2546 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 43,685 psi | 77% | 2671 fps | 95.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,256 psi | 57% | 2346 fps | 96% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 27,818 psi | 49% | 2254 fps | 95.4% |
| Somchem S321 | <<locked>> | 82% | 37,159 psi | 66% | 2539 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 31,734 psi | 56% | 2352 fps | 96.8% |
| Somchem S341 | <<locked>> | 92% | 45,194 psi | 80% | 2684 fps | 95.5% |
| Somchem S355 | <<locked>> | 98% | 42,018 psi | 74% | 2657 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 45,672 psi | 81% | 2569 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 36,724 psi | 65% | 2448 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 80% | 32,082 psi | 57% | 2362 fps | 98.5% |
| Vihtavuori N135 | <<locked>> | 80% | 27,079 psi | 48% | 2313 fps | 97.2% |
| Vihtavuori N140 | <<locked>> | 82% | 30,255 psi | 53% | 2362 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 94% | 35,433 psi | 63% | 2497 fps | 95% |
| Vihtavuori N530 | <<locked>> | 86% | 39,523 psi | 70% | 2562 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 84% | 31,096 psi | 55% | 2398 fps | 95.4% |
| Winchester 748 | <<locked>> | 84% | 35,520 psi | 63% | 2539 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 92% | 42,627 psi | 75% | 2671 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 92 powders for 8 x 57 IS loaded with the .323 | 160gr | RWS HIT. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,890 fps; across all powders the maximum-charge window runs from 1,683 fps to 2,890 fps. Accurate 2495 gives the best case fill at 100 %, and 92 of the 92 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 160.0 gr projectile in 0.323" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, ADI AR 2208 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 1200-R, IMR 3031, Hodgdon BL-C2 rank at the top here: for 8 x 57 IS with the .323 | 160gr | RWS HIT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-17, Hodgdon H380, IMR 4166 Enduron 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.