Load Specifications
Load data in caliber 8 x 57 IS with .323 | 120gr | Impala LWHV LS bullet and 44 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H322, Alliant AR-Comp and ADI AR 2219.
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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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 84% | 49,908 psi | 88% | 3005 fps | 99.8% |
| Accurate 2015 | <<locked>> | 98% | 50,691 psi | 90% | 3100 fps | 99.4% |
| Accurate 2460 | <<locked>> | 94% | 49,501 psi | 88% | 3094 fps | 97% |
| Accurate 2495ᴾ | <<locked>> | 100% | 42,902 psi | 76% | 3025 fps | 98.7% |
| Accurate 2520 | <<locked>> | 98% | 49,168 psi | 87% | 3130 fps | 96.5% |
| Accurate LT-30 | <<locked>> | 90% | 50,517 psi | 89% | 3012 fps | 98.5% |
| Accurate LT-32 | <<locked>> | 90% | 50,923 psi | 90% | 3018 fps | 96.8% |
| ADI AR 2207 | <<locked>> | 88% | 50,372 psi | 89% | 3081 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 48,501 psi | 86% | 3114 fps | 98% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 49,356 psi | 87% | 3179 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 94% | 50,894 psi | 90% | 3130 fps | 99.9% |
| Alliant Reloder-7 | <<locked>> | 86% | 49,385 psi | 87% | 3038 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 48,965 psi | 87% | 2999 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 94% | 49,966 psi | 88% | 3140 fps | 98.3% |
| Hodgdon H335 | <<locked>> | 94% | 50,894 psi | 90% | 3153 fps | 97.5% |
| Hodgdon H4198 | <<locked>> | 86% | 49,385 psi | 87% | 3012 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,793 psi | 58% | 1929 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 47,137 psi | 83% | 3153 fps | 98.5% |
| IMR 4198 | <<locked>> | 92% | 48,979 psi | 87% | 3058 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 49,516 psi | 88% | 2995 fps | 100% |
| Lovex D073.4 | <<locked>> | 88% | 50,169 psi | 89% | 3117 fps | 96.4% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 46,659 psi | 82% | 3097 fps | 95.9% |
| Lovex S053 | <<locked>> | 82% | 48,747 psi | 86% | 2949 fps | 100% |
| Norma 200 | <<locked>> | 88% | 48,994 psi | 87% | 3074 fps | 99.9% |
| Norma 202ᴾ | <<locked>> | 100% | 48,037 psi | 85% | 3100 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,692 psi | 58% | 1972 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 49,385 psi | 87% | 3028 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 49,806 psi | 88% | 3107 fps | 96.2% |
| Rottweil R 901 | <<locked>> | 98% | 50,357 psi | 89% | 3100 fps | 97.1% |
| Shooters World AR Plus | <<locked>> | 88% | 50,169 psi | 89% | 3117 fps | 96.4% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 46,659 psi | 82% | 3097 fps | 95.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 49,501 psi | 88% | 2799 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 48,921 psi | 86% | 3110 fps | 97% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 48,660 psi | 86% | 3084 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 48,834 psi | 86% | 3009 fps | 96.9% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 41,742 psi | 74% | 2887 fps | 96.4% |
| Somchem S335ᴾ | <<locked>> | 100% | 50,241 psi | 89% | 3058 fps | 98.1% |
| Vihtavuori N120 | <<locked>> | 88% | 50,415 psi | 89% | 3028 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 48,892 psi | 86% | 3028 fps | 99.6% |
| Vihtavuori N133ᴾ | <<locked>> | 100% | 50,618 psi | 89% | 3064 fps | 99.3% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 42,975 psi | 76% | 3018 fps | 98.6% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 45,629 psi | 81% | 3022 fps | 96.8% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 44,034 psi | 78% | 3005 fps | 95.8% |
| Winchester 748ᴾ | <<locked>> | 100% | 50,923 psi | 90% | 3182 fps | 95.8% |
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 1680 | <<locked>> | 80% | 43,932 psi | 78% | 2894 fps | 99.2% |
| Accurate 2015 | <<locked>> | 82% | 31,647 psi | 56% | 2684 fps | 95.1% |
| Accurate 2460 | <<locked>> | 90% | 43,714 psi | 77% | 2982 fps | 95.6% |
| Accurate 2495 | <<locked>> | 90% | 31,517 psi | 56% | 2756 fps | 95.6% |
| Accurate 2520 | <<locked>> | 96% | 46,238 psi | 82% | 3074 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 37,782 psi | 67% | 2753 fps | 95.6% |
| Accurate LT-32 | <<locked>> | 86% | 45,411 psi | 80% | 2913 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 39,813 psi | 70% | 2884 fps | 100% |
| ADI AR 2219 | 44 gr | 82% | 37,652 psi | 67% | 2877 fps | 95.2% |
| Alliant AR-Comp | 40.2 gr | 80% | 27,383 psi | 48% | 2631 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 34,069 psi | 60% | 2769 fps | 97.2% |
| Alliant Reloder-7 | <<locked>> | 80% | 41,539 psi | 73% | 2884 fps | 99.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,100 psi | 64% | 2730 fps | 95.4% |
| Hodgdon H322 | 44.6 gr | 86% | 38,972 psi | 69% | 2910 fps | 95.6% |
| Hodgdon H335 | <<locked>> | 88% | 42,119 psi | 74% | 2979 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 41,379 psi | 73% | 2851 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,395 psi | 43% | 1729 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 35,143 psi | 62% | 2874 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 35,128 psi | 62% | 2759 fps | 98.4% |
| IMR 4227 | <<locked>> | 80% | 46,586 psi | 82% | 2943 fps | 100% |
| Lovex D073.4 | <<locked>> | 86% | 46,934 psi | 83% | 3054 fps | 95.6% |
| Lovex D073.6 | <<locked>> | 98% | 43,656 psi | 77% | 3038 fps | 95% |
| Lovex S053 | <<locked>> | 80% | 45,977 psi | 81% | 2900 fps | 100% |
| Norma 200 | <<locked>> | 80% | 38,696 psi | 68% | 2861 fps | 98.9% |
| Norma 202 | <<locked>> | 96% | 42,482 psi | 75% | 2989 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,453 psi | 43% | 1772 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 46,615 psi | 82% | 2979 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 46,760 psi | 83% | 3048 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 92% | 42,815 psi | 76% | 2949 fps | 95.3% |
| Shooters World AR Plus | <<locked>> | 86% | 46,934 psi | 83% | 3054 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 98% | 43,656 psi | 77% | 3038 fps | 95% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 42,627 psi | 75% | 2687 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 86% | 43,178 psi | 76% | 2995 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,171 psi | 60% | 2759 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 94% | 43,526 psi | 77% | 2907 fps | 95.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 37,188 psi | 66% | 2785 fps | 95% |
| Somchem S335 | <<locked>> | 90% | 37,724 psi | 67% | 2805 fps | 95.1% |
| Vihtavuori N120 | <<locked>> | 80% | 39,885 psi | 71% | 2841 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,750 psi | 58% | 2677 fps | 96.5% |
| Vihtavuori N133 | <<locked>> | 86% | 33,779 psi | 60% | 2713 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 90% | 32,169 psi | 57% | 2756 fps | 95.5% |
| Vihtavuori N140 | <<locked>> | 96% | 40,408 psi | 71% | 2913 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 98% | 41,568 psi | 73% | 2953 fps | 95% |
| Winchester 748 | <<locked>> | 98% | 48,051 psi | 85% | 3127 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 44 powders for 8 x 57 IS loaded with the .323 | 120gr | Impala LWHV LS. Winchester 748 delivers the highest muzzle velocity at 3,182 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,182 fps. Accurate 2495 gives the best case fill at 100 %, and 44 of the 44 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.323" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. Accurate 2495, Alliant AR-Comp, Hodgdon TrailBoss 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. Hodgdon H322, Alliant AR-Comp, ADI AR 2219 rank at the top here: for 8 x 57 IS with the .323 | 120gr | Impala LWHV LS 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.