Load Specifications
Load data in caliber 8 x 57 IS with .323 | 170gr | Speer Hot-Cor bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 52, Hodgdon LEVERevolution and IMR 4895.
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% | 48,921 psi | 86% | 2628 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 49,458 psi | 87% | 2690 fps | 96.6% |
| Accurate 2230 | <<locked>> | 82% | 49,821 psi | 88% | 2700 fps | 97.1% |
| Accurate 2460 | <<locked>> | 88% | 50,618 psi | 89% | 2687 fps | 99.8% |
| Accurate 2495 | <<locked>> | 96% | 48,124 psi | 85% | 2674 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 48,080 psi | 85% | 2687 fps | 99.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 50,807 psi | 90% | 2746 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 50,212 psi | 89% | 2585 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 50,589 psi | 89% | 2598 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 94% | 51,010 psi | 90% | 2733 fps | 97.8% |
| ADI AR 2207 | <<locked>> | 82% | 51,126 psi | 90% | 2612 fps | 100% |
| ADI AR 2208 | <<locked>> | 98% | 48,907 psi | 86% | 2674 fps | 96.6% |
| ADI AR 2219 | <<locked>> | 84% | 49,284 psi | 87% | 2687 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 92% | 50,763 psi | 90% | 2700 fps | 98.8% |
| Alliant AR-Comp | <<locked>> | 92% | 48,994 psi | 87% | 2700 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 48,472 psi | 86% | 2746 fps | 98% |
| Alliant Power Pro 2000-MR | <<locked>> | 96% | 50,386 psi | 89% | 2815 fps | 96.5% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 50,401 psi | 89% | 2743 fps | 98.5% |
| Alliant Reloder-10x | <<locked>> | 86% | 49,095 psi | 87% | 2638 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 48,182 psi | 85% | 2707 fps | 96.7% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 44,860 psi | 79% | 2720 fps | 96.7% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 48,791 psi | 86% | 2575 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 94% | 50,415 psi | 89% | 2736 fps | 96.5% |
| Bofors RP3ᴾ | <<locked>> | 100% | 50,299 psi | 89% | 2753 fps | 98.6% |
| Hodgdon Benchmark | <<locked>> | 90% | 50,183 psi | 89% | 2648 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 92% | 48,689 psi | 86% | 2720 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 90% | 50,169 psi | 89% | 2799 fps | 97.1% |
| Hodgdon H322 | <<locked>> | 88% | 51,126 psi | 90% | 2713 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 48,921 psi | 86% | 2687 fps | 99.8% |
| Hodgdon H4895 | <<locked>> | 92% | 48,341 psi | 85% | 2697 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 49,559 psi | 88% | 2766 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,808 psi | 60% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 49,647 psi | 88% | 2700 fps | 98% |
| IMR 3031 | <<locked>> | 94% | 49,806 psi | 88% | 2749 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 48,356 psi | 85% | 2661 fps | 96.8% |
| IMR 4198 | <<locked>> | 86% | 50,009 psi | 88% | 2608 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 49,356 psi | 87% | 2743 fps | 97.6% |
| IMR 8208 XBR | <<locked>> | 92% | 50,763 psi | 90% | 2700 fps | 98.8% |
| Lovex D073.4 | <<locked>> | 82% | 50,430 psi | 89% | 2694 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 88% | 50,415 psi | 89% | 2690 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 94% | 49,211 psi | 87% | 2717 fps | 99.6% |
| Lovex S060 | <<locked>> | 92% | 49,139 psi | 87% | 2628 fps | 97.4% |
| Lovex S062 | <<locked>> | 98% | 50,415 psi | 89% | 2710 fps | 98.8% |
| Norma 200 | <<locked>> | 82% | 49,037 psi | 87% | 2615 fps | 100% |
| Norma 201 | <<locked>> | 94% | 49,690 psi | 88% | 2684 fps | 98.7% |
| Norma 202 | <<locked>> | 94% | 49,864 psi | 88% | 2700 fps | 99.9% |
| Norma 203B | <<locked>> | 98% | 50,575 psi | 89% | 2749 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 98% | 50,966 psi | 90% | 2769 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 92% | 49,792 psi | 88% | 2720 fps | 97.5% |
| Ramshot X-Terminator | <<locked>> | 88% | 49,153 psi | 87% | 2651 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,866 psi | 60% | 1680 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 88% | 50,647 psi | 90% | 2694 fps | 99.5% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 50,807 psi | 90% | 2818 fps | 97.3% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 47,950 psi | 85% | 2795 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 92% | 51,126 psi | 90% | 2687 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 96% | 50,212 psi | 89% | 2684 fps | 98.7% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 46,760 psi | 83% | 2687 fps | 97.7% |
| Shooters World AR Plus | <<locked>> | 82% | 50,430 psi | 89% | 2694 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 94% | 49,211 psi | 87% | 2717 fps | 99.6% |
| Shooters World Precision | <<locked>> | 98% | 50,415 psi | 89% | 2710 fps | 98.8% |
| Shooters World Tactical Rifle | <<locked>> | 86% | 50,908 psi | 90% | 2664 fps | 98.5% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 49,821 psi | 88% | 2694 fps | 99.8% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 48,965 psi | 87% | 2746 fps | 97.3% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 49,966 psi | 88% | 2654 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 49,429 psi | 87% | 2703 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 49,530 psi | 88% | 2608 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 48,370 psi | 86% | 2598 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 48,399 psi | 86% | 2684 fps | 98.7% |
| Somchem S335 | <<locked>> | 94% | 51,155 psi | 90% | 2648 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 48,254 psi | 85% | 2671 fps | 97.1% |
| Somchem S355ᴾ | <<locked>> | 100% | 47,863 psi | 85% | 2690 fps | 97.7% |
| Vihtavuori N120 | <<locked>> | 82% | 51,082 psi | 90% | 2562 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 49,429 psi | 87% | 2592 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 49,197 psi | 87% | 2605 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 48,341 psi | 85% | 2667 fps | 100% |
| Vihtavuori N140 | <<locked>> | 96% | 50,314 psi | 89% | 2680 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 46,267 psi | 82% | 2635 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 92% | 51,169 psi | 90% | 2700 fps | 98.9% |
| Vihtavuori N540 | <<locked>> | 96% | 48,515 psi | 86% | 2674 fps | 99.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 42,540 psi | 75% | 2562 fps | 96% |
| Winchester 748 | <<locked>> | 92% | 49,516 psi | 88% | 2740 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 94% | 48,733 psi | 86% | 2710 fps | 97.9% |
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% | 35,795 psi | 63% | 2398 fps | 99.6% |
| Accurate 2200 | <<locked>> | 80% | 46,470 psi | 82% | 2638 fps | 95.9% |
| Accurate 2230 | <<locked>> | 80% | 46,514 psi | 82% | 2644 fps | 96.4% |
| Accurate 2460 | <<locked>> | 80% | 38,595 psi | 68% | 2480 fps | 98.4% |
| Accurate 2495 | <<locked>> | 80% | 28,239 psi | 50% | 2287 fps | 98.5% |
| Accurate 2520 | <<locked>> | 80% | 34,026 psi | 60% | 2421 fps | 96.8% |
| Accurate 4064 | <<locked>> | 80% | 26,774 psi | 47% | 2260 fps | 95.2% |
| Accurate LT-30 | <<locked>> | 80% | 44,454 psi | 79% | 2493 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 80% | 44,817 psi | 79% | 2507 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 86% | 39,871 psi | 70% | 2530 fps | 95.1% |
| ADI AR 2207 | <<locked>> | 80% | 48,022 psi | 85% | 2569 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 43,323 psi | 77% | 2579 fps | 95.2% |
| ADI AR 2219 | <<locked>> | 80% | 43,149 psi | 76% | 2585 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 37,159 psi | 66% | 2451 fps | 95.7% |
| Alliant AR-Comp | <<locked>> | 80% | 33,040 psi | 58% | 2421 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 39,566 psi | 70% | 2575 fps | 95.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 47,152 psi | 83% | 2753 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 36,709 psi | 65% | 2493 fps | 95.3% |
| Alliant Reloder-10x | <<locked>> | 80% | 40,973 psi | 72% | 2507 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 42,670 psi | 75% | 2608 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 98% | 41,974 psi | 74% | 2661 fps | 95.8% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 43,047 psi | 76% | 2484 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 44,251 psi | 78% | 2631 fps | 95% |
| Bofors RP3 | <<locked>> | 90% | 35,853 psi | 63% | 2487 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 37,115 psi | 66% | 2408 fps | 96.4% |
| Hodgdon BL-C2 | <<locked>> | 82% | 34,751 psi | 61% | 2454 fps | 95.7% |
| Hodgdon CFE223 | <<locked>> | 86% | 43,947 psi | 78% | 2684 fps | 95.6% |
| Hodgdon H322 | <<locked>> | 80% | 39,450 psi | 70% | 2516 fps | 99.4% |
| Hodgdon H335 | <<locked>> | 80% | 40,016 psi | 71% | 2533 fps | 98.8% |
| Hodgdon H4895 | <<locked>> | 84% | 37,463 psi | 66% | 2490 fps | 95.1% |
| Hodgdon LEVERevolution | 47.7 gr | 88% | 38,058 psi | 67% | 2549 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,048 psi | 44% | 1467 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 38,667 psi | 68% | 2497 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 31,459 psi | 56% | 2398 fps | 98.4% |
| IMR 4064 | <<locked>> | 92% | 42,815 psi | 76% | 2562 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 41,901 psi | 74% | 2480 fps | 100% |
| IMR 4895 | 46.7 gr | 90% | 40,770 psi | 72% | 2585 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 82% | 37,159 psi | 66% | 2451 fps | 95.7% |
| Lovex D073.4 | <<locked>> | 80% | 47,036 psi | 83% | 2638 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 80% | 38,450 psi | 68% | 2480 fps | 97.2% |
| Lovex D073.6 | <<locked>> | 80% | 30,589 psi | 54% | 2352 fps | 95.5% |
| Lovex S060 | <<locked>> | 86% | 40,915 psi | 72% | 2480 fps | 95.4% |
| Lovex S062 | <<locked>> | 86% | 34,737 psi | 61% | 2415 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 46,122 psi | 82% | 2569 fps | 100% |
| Norma 201 | <<locked>> | 84% | 36,666 psi | 65% | 2441 fps | 95.7% |
| Norma 202 | <<locked>> | 80% | 32,140 psi | 57% | 2362 fps | 96.9% |
| Norma 203B | <<locked>> | 90% | 39,146 psi | 69% | 2543 fps | 95% |
| Ramshot Big Game | <<locked>> | 92% | 41,814 psi | 74% | 2608 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 40,872 psi | 72% | 2559 fps | 95.3% |
| Ramshot X-Terminator | <<locked>> | 82% | 40,321 psi | 71% | 2490 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,193 psi | 45% | 1503 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 39,001 psi | 69% | 2490 fps | 97.8% |
| ReloadSwiss RS 52 | 49.3 gr | 92% | 44,266 psi | 78% | 2703 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 34,577 psi | 61% | 2503 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 35,868 psi | 63% | 2405 fps | 97.7% |
| Rottweil R 902 | <<locked>> | 84% | 34,621 psi | 61% | 2388 fps | 95% |
| Rottweil R 903 | <<locked>> | 94% | 38,363 psi | 68% | 2533 fps | 95.6% |
| Shooters World AR Plus | <<locked>> | 80% | 47,036 psi | 83% | 2638 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 30,589 psi | 54% | 2352 fps | 95.5% |
| Shooters World Precision | <<locked>> | 86% | 34,737 psi | 61% | 2415 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 41,263 psi | 73% | 2497 fps | 96.5% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 43,656 psi | 77% | 2592 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 40,451 psi | 72% | 2585 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 41,539 psi | 73% | 2516 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 40,814 psi | 72% | 2549 fps | 95.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 34,185 psi | 60% | 2329 fps | 97.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 27,731 psi | 49% | 2195 fps | 96.3% |
| Somchem S321 | <<locked>> | 80% | 36,912 psi | 65% | 2467 fps | 96.1% |
| Somchem S335 | <<locked>> | 80% | 33,460 psi | 59% | 2329 fps | 98% |
| Somchem S341 | <<locked>> | 88% | 42,235 psi | 75% | 2566 fps | 95.6% |
| Somchem S355 | <<locked>> | 94% | 39,537 psi | 70% | 2539 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 48,022 psi | 85% | 2523 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 38,899 psi | 69% | 2421 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 34,098 psi | 60% | 2339 fps | 99.4% |
| Vihtavuori N135 | <<locked>> | 80% | 29,124 psi | 51% | 2300 fps | 98.6% |
| Vihtavuori N140 | <<locked>> | 80% | 30,284 psi | 54% | 2300 fps | 96.6% |
| Vihtavuori N150 | <<locked>> | 90% | 33,344 psi | 59% | 2385 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 34,563 psi | 61% | 2392 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 28,964 psi | 51% | 2277 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 39,914 psi | 71% | 2510 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 33,272 psi | 59% | 2421 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 37,304 psi | 66% | 2497 fps | 95% |
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 82 powders for 8 x 57 IS loaded with the .323 | 170gr | Speer Hot-Cor. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,818 fps; across all powders the maximum-charge window runs from 1,640 fps to 2,818 fps. Accurate 4064 gives the best case fill at 100 %, and 82 of the 82 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 170.0 gr projectile in 0.323" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 4064, Alliant Reloder- TS 15.5, 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. ReloadSwiss RS 52, Hodgdon LEVERevolution, IMR 4895 rank at the top here: for 8 x 57 IS with the .323 | 170gr | Speer Hot-Cor 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.