Load Specifications
Load data in caliber 8 x 57 IS with .323 | 139gr | RWS Evolution Green bullet and 56 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon H335, Winchester 748 and Accurate 2520.
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% | 50,850 psi | 90% | 2851 fps | 100% |
| Accurate 2015 | <<locked>> | 96% | 48,066 psi | 85% | 2887 fps | 99.9% |
| Accurate 2460 | <<locked>> | 94% | 50,212 psi | 89% | 2946 fps | 98.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 42,235 psi | 75% | 2854 fps | 99.6% |
| Accurate 2520 | <<locked>> | 98% | 50,720 psi | 90% | 2992 fps | 98.4% |
| Accurate 4064ᴾ | <<locked>> | 100% | 39,276 psi | 69% | 2815 fps | 97.3% |
| Accurate LT-30 | <<locked>> | 88% | 48,660 psi | 86% | 2818 fps | 99.3% |
| Accurate LT-32 | <<locked>> | 88% | 49,110 psi | 87% | 2828 fps | 98% |
| ADI AR 2207 | <<locked>> | 86% | 48,240 psi | 85% | 2861 fps | 100% |
| ADI AR 2219 | <<locked>> | 90% | 49,777 psi | 88% | 2966 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 98% | 50,662 psi | 90% | 2953 fps | 96.7% |
| Alliant AR-Compᴾ | <<locked>> | 100% | 51,169 psi | 90% | 3022 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 94% | 51,155 psi | 90% | 3061 fps | 96.2% |
| Alliant Reloder-10x | <<locked>> | 92% | 48,733 psi | 86% | 2920 fps | 100% |
| Alliant Reloder-7 | <<locked>> | 86% | 49,893 psi | 88% | 2874 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 90% | 50,024 psi | 88% | 2851 fps | 99.6% |
| Hodgdon Benchmark | <<locked>> | 96% | 50,662 psi | 90% | 2907 fps | 97.3% |
| Hodgdon BL-C2 | <<locked>> | 98% | 47,993 psi | 85% | 2966 fps | 96.8% |
| Hodgdon H322 | <<locked>> | 92% | 48,167 psi | 85% | 2940 fps | 99.2% |
| Hodgdon H335 | <<locked>> | 92% | 49,284 psi | 87% | 2959 fps | 98.7% |
| Hodgdon H4198 | <<locked>> | 86% | 50,546 psi | 89% | 2867 fps | 99.2% |
| Hodgdon H4895ᴾ | <<locked>> | 100% | 51,097 psi | 90% | 2999 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,169 psi | 57% | 1795 fps | 100% |
| IMR 3031ᴾ | <<locked>> | 100% | 48,312 psi | 85% | 3005 fps | 99.7% |
| IMR 4198 | <<locked>> | 92% | 50,473 psi | 89% | 2900 fps | 100% |
| IMR 4227 | <<locked>> | 82% | 50,256 psi | 89% | 2825 fps | 100% |
| IMR 8208 XBR | <<locked>> | 98% | 50,662 psi | 90% | 2953 fps | 96.7% |
| Lovex D073.4 | <<locked>> | 88% | 50,792 psi | 90% | 2966 fps | 98.2% |
| Lovex D073.5 | <<locked>> | 94% | 50,314 psi | 89% | 2946 fps | 97.6% |
| Lovex D073.6ᴾ | <<locked>> | 100% | 47,790 psi | 84% | 2956 fps | 97.9% |
| Lovex S053 | <<locked>> | 82% | 49,255 psi | 87% | 2776 fps | 100% |
| Norma 200 | <<locked>> | 88% | 48,849 psi | 86% | 2900 fps | 100% |
| Norma 201ᴾ | <<locked>> | 100% | 49,095 psi | 87% | 2930 fps | 96.4% |
| Norma 202ᴾ | <<locked>> | 100% | 49,182 psi | 87% | 2956 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,184 psi | 57% | 1841 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 82% | 50,357 psi | 89% | 2861 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 94% | 50,937 psi | 90% | 2959 fps | 98.1% |
| Rottweil R 901 | <<locked>> | 98% | 50,053 psi | 88% | 2940 fps | 98.6% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 46,253 psi | 82% | 2871 fps | 95.7% |
| Shooters World AR Plus | <<locked>> | 88% | 50,792 psi | 90% | 2966 fps | 98.2% |
| Shooters World Match Rifleᴾ | <<locked>> | 100% | 47,790 psi | 84% | 2956 fps | 97.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 86% | 50,053 psi | 88% | 2628 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 90% | 50,343 psi | 89% | 2969 fps | 98.7% |
| SNPE Vectan SP 3 | <<locked>> | 92% | 49,937 psi | 88% | 2930 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 98% | 49,777 psi | 88% | 2867 fps | 98.6% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 42,235 psi | 75% | 2749 fps | 98.2% |
| Somchem S321 | <<locked>> | 94% | 48,544 psi | 86% | 2940 fps | 96.6% |
| Somchem S335ᴾ | <<locked>> | 100% | 50,908 psi | 90% | 2907 fps | 99.4% |
| Vihtavuori N120 | <<locked>> | 86% | 48,370 psi | 86% | 2815 fps | 100% |
| Vihtavuori N130 | <<locked>> | 94% | 49,530 psi | 88% | 2867 fps | 100% |
| Vihtavuori N133 | <<locked>> | 98% | 49,052 psi | 87% | 2871 fps | 99.9% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 43,714 psi | 77% | 2867 fps | 99.7% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 46,630 psi | 82% | 2884 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 96% | 47,979 psi | 85% | 2900 fps | 96.1% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 45,092 psi | 80% | 2871 fps | 97.8% |
| Winchester 748 | <<locked>> | 98% | 49,313 psi | 87% | 2995 fps | 97.4% |
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 1680 | <<locked>> | 80% | 44,353 psi | 78% | 2743 fps | 99.9% |
| Accurate 2015 | <<locked>> | 80% | 28,703 psi | 51% | 2474 fps | 95.9% |
| Accurate 2460 | <<locked>> | 84% | 35,447 psi | 63% | 2661 fps | 95.1% |
| Accurate 2495 | <<locked>> | 86% | 25,860 psi | 46% | 2467 fps | 95.1% |
| Accurate 2520 | 49.1 gr | 90% | 37,927 psi | 67% | 2753 fps | 95.5% |
| Accurate 4064 | <<locked>> | 96% | 34,374 psi | 61% | 2703 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 37,913 psi | 67% | 2612 fps | 97.4% |
| Accurate LT-32 | <<locked>> | 80% | 38,290 psi | 68% | 2618 fps | 95.5% |
| ADI AR 2207 | <<locked>> | 80% | 39,885 psi | 71% | 2717 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 35,346 psi | 62% | 2677 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 94% | 44,788 psi | 79% | 2848 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 26,484 psi | 47% | 2487 fps | 97.6% |
| Alliant Power Pro 1200-R | <<locked>> | 92% | 47,645 psi | 84% | 2995 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 33,402 psi | 59% | 2612 fps | 98.6% |
| Alliant Reloder-7 | <<locked>> | 80% | 41,292 psi | 73% | 2723 fps | 99.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 36,201 psi | 64% | 2592 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 90% | 42,235 psi | 75% | 2749 fps | 95.3% |
| Hodgdon BL-C2 | <<locked>> | 94% | 41,684 psi | 74% | 2848 fps | 95.2% |
| Hodgdon H322 | <<locked>> | 80% | 32,271 psi | 57% | 2598 fps | 95.3% |
| Hodgdon H335 | 45.3 gr | 82% | 34,664 psi | 61% | 2661 fps | 95% |
| Hodgdon H4198 | <<locked>> | 80% | 41,872 psi | 74% | 2710 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 98% | 47,718 psi | 84% | 2940 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 23,786 psi | 42% | 1608 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 30,647 psi | 54% | 2615 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 35,172 psi | 62% | 2608 fps | 99.5% |
| IMR 4227 | <<locked>> | 80% | 47,413 psi | 84% | 2779 fps | 100% |
| IMR 8208 XBR | <<locked>> | 94% | 44,788 psi | 79% | 2848 fps | 95.3% |
| Lovex D073.4 | <<locked>> | 80% | 38,043 psi | 67% | 2723 fps | 95.2% |
| Lovex D073.5 | <<locked>> | 88% | 40,669 psi | 72% | 2769 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 94% | 38,638 psi | 68% | 2782 fps | 95.7% |
| Lovex S053 | <<locked>> | 80% | 46,224 psi | 82% | 2730 fps | 100% |
| Norma 200 | <<locked>> | 80% | 37,579 psi | 66% | 2690 fps | 99.7% |
| Norma 201 | <<locked>> | 96% | 43,250 psi | 76% | 2822 fps | 95% |
| Norma 202 | <<locked>> | 90% | 35,505 psi | 63% | 2684 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 23,482 psi | 42% | 1640 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 47,282 psi | 84% | 2815 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 39,175 psi | 69% | 2736 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 88% | 36,927 psi | 65% | 2680 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 98% | 43,439 psi | 77% | 2815 fps | 95% |
| Shooters World AR Plus | <<locked>> | 80% | 38,043 psi | 67% | 2723 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 94% | 38,638 psi | 68% | 2782 fps | 95.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 42,699 psi | 75% | 2520 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 35,578 psi | 63% | 2674 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 34,113 psi | 60% | 2618 fps | 97% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 36,216 psi | 64% | 2608 fps | 95.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 32,837 psi | 58% | 2546 fps | 95.6% |
| Somchem S321 | <<locked>> | 92% | 45,020 psi | 80% | 2877 fps | 95.7% |
| Somchem S335 | <<locked>> | 86% | 32,866 psi | 58% | 2552 fps | 95.5% |
| Vihtavuori N120 | <<locked>> | 80% | 40,059 psi | 71% | 2677 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 32,126 psi | 57% | 2523 fps | 98% |
| Vihtavuori N133 | <<locked>> | 80% | 27,905 psi | 49% | 2421 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 86% | 27,818 psi | 49% | 2503 fps | 95.7% |
| Vihtavuori N140 | <<locked>> | 90% | 33,736 psi | 60% | 2618 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 94% | 44,976 psi | 80% | 2844 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 94% | 36,898 psi | 65% | 2703 fps | 95.7% |
| Winchester 748 | 50.9 gr | 94% | 42,989 psi | 76% | 2874 fps | 95.8% |
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 88 powders for 8 x 57 IS loaded with the .323 | 139gr | RWS Evolution Green. Alliant Power Pro 1200-R delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,795 fps to 3,061 fps. Accurate 2495 gives the best case fill at 100 %, and 88 of the 88 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 139.0 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 2206H 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 H335, Winchester 748, Accurate 2520 rank at the top here: for 8 x 57 IS with the .323 | 139gr | RWS Evolution Green they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2200, Accurate 2230, ADI AR 2208 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.