Load Specifications
Load data in caliber 8 x 75 RS with .323 | 185gr | Prvi Partizan Grom bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and ReloadSwiss RS 60.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 86% | 49,139 psi | 89% | 2690 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 49,356 psi | 90% | 2736 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 48,225 psi | 88% | 2799 fps | 99% |
| ADI AR 2206H | <<locked>> | 84% | 49,835 psi | 90% | 2759 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 88% | 47,776 psi | 87% | 2710 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 48,979 psi | 89% | 2713 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 49,472 psi | 90% | 2697 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 48,994 psi | 89% | 2864 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 47,616 psi | 86% | 2733 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 86% | 48,037 psi | 87% | 2749 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 96% | 47,079 psi | 85% | 2805 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 92% | 47,674 psi | 87% | 2841 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,029 psi | 69% | 2648 fps | 98.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,467 psi | 77% | 2805 fps | 97.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 49,342 psi | 90% | 2769 fps | 99.2% |
| Bofors RP3 | <<locked>> | 88% | 47,819 psi | 87% | 2746 fps | 99.9% |
| Bofors RP7 | <<locked>> | 92% | 48,254 psi | 88% | 2710 fps | 95.9% |
| Hodgdon BL-C2 | <<locked>> | 82% | 47,906 psi | 87% | 2736 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 48,805 psi | 89% | 2753 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 94% | 47,964 psi | 87% | 2795 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 82% | 47,210 psi | 86% | 2717 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,501 psi | 90% | 2789 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 49,313 psi | 89% | 2799 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 48,283 psi | 88% | 2818 fps | 96.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,418 psi | 64% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 48,254 psi | 88% | 2720 fps | 99.8% |
| IMR 3031 | <<locked>> | 82% | 46,934 psi | 85% | 2707 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 47,442 psi | 86% | 2694 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 84% | 47,471 psi | 86% | 2667 fps | 96.3% |
| IMR 4350 | <<locked>> | 96% | 48,356 psi | 88% | 2733 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 47,123 psi | 86% | 2690 fps | 96.1% |
| IMR 4831 | <<locked>> | 98% | 49,066 psi | 89% | 2795 fps | 99.1% |
| IMR 4895 | <<locked>> | 86% | 49,226 psi | 89% | 2779 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 82% | 48,979 psi | 89% | 2713 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 49,226 psi | 89% | 2736 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 49,705 psi | 90% | 2690 fps | 99.7% |
| Lovex S062 | <<locked>> | 86% | 47,224 psi | 86% | 2694 fps | 99.9% |
| Lovex S065 | <<locked>> | 94% | 49,443 psi | 90% | 2740 fps | 98% |
| Lovex S070 | <<locked>> | 94% | 47,152 psi | 86% | 2720 fps | 96.6% |
| Norma 201 | <<locked>> | 84% | 48,776 psi | 89% | 2707 fps | 100% |
| Norma 202 | <<locked>> | 84% | 49,124 psi | 89% | 2713 fps | 100% |
| Norma 203B | <<locked>> | 86% | 47,311 psi | 86% | 2736 fps | 99.5% |
| Norma URP | <<locked>> | 96% | 47,993 psi | 87% | 2792 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 86% | 47,369 psi | 86% | 2759 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 96% | 46,862 psi | 85% | 2782 fps | 97.2% |
| Ramshot TAC | <<locked>> | 82% | 49,052 psi | 89% | 2723 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 82% | 48,588 psi | 88% | 2743 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,824 psi | 65% | 1759 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 49,008 psi | 89% | 2733 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 47,834 psi | 87% | 2805 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 47,413 psi | 86% | 2844 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 47,863 psi | 87% | 2818 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 47,935 psi | 87% | 2841 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 82% | 49,850 psi | 90% | 2694 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 49,313 psi | 89% | 2707 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 47,732 psi | 87% | 2736 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 92% | 48,254 psi | 88% | 2710 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 94% | 49,443 psi | 90% | 2740 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 84% | 49,226 psi | 89% | 2736 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 47,224 psi | 86% | 2694 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 94% | 47,152 psi | 86% | 2720 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 49,037 psi | 89% | 2792 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 47,326 psi | 86% | 2697 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 48,283 psi | 88% | 2730 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 47,282 psi | 86% | 2608 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 47,355 psi | 86% | 2612 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 49,545 psi | 90% | 2690 fps | 96.8% |
| Somchem S335 | <<locked>> | 84% | 49,734 psi | 90% | 2654 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 47,007 psi | 85% | 2694 fps | 99.4% |
| Somchem S355 | <<locked>> | 90% | 48,399 psi | 88% | 2740 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,863 psi | 89% | 2848 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 47,601 psi | 86% | 2598 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 48,965 psi | 89% | 2680 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 49,632 psi | 90% | 2694 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 49,472 psi | 90% | 2720 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 46,949 psi | 85% | 2736 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 82% | 49,240 psi | 89% | 2710 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 47,805 psi | 87% | 2687 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 49,342 psi | 90% | 2795 fps | 98.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,452 psi | 75% | 2726 fps | 98.4% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 47,210 psi | 86% | 2717 fps | 99.8% |
| Winchester 748 | <<locked>> | 82% | 48,878 psi | 89% | 2756 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 48,211 psi | 87% | 2799 fps | 96.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,069 psi | 62% | 2644 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 84% | 47,906 psi | 87% | 2736 fps | 99.8% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 40,524 psi | 74% | 2549 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 38,290 psi | 69% | 2543 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,200 psi | 62% | 2520 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 43,961 psi | 80% | 2654 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 37,449 psi | 68% | 2507 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,021 psi | 84% | 2664 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 46,180 psi | 84% | 2648 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,842 psi | 72% | 2680 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,057 psi | 67% | 2530 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,697 psi | 72% | 2592 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,708 psi | 63% | 2536 fps | 95.7% |
| Alliant Reloder-17 | 54.8 gr | 80% | 31,952 psi | 58% | 2493 fps | 96.5% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,791 psi | 54% | 2434 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,753 psi | 67% | 2671 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,149 psi | 78% | 2657 fps | 98.2% |
| Bofors RP3 | <<locked>> | 80% | 36,593 psi | 66% | 2533 fps | 98.5% |
| Bofors RP7 | <<locked>> | 90% | 45,310 psi | 82% | 2657 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,730 psi | 81% | 2684 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 37,347 psi | 68% | 2533 fps | 96% |
| Hodgdon H414 | <<locked>> | 90% | 42,163 psi | 77% | 2684 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 44,338 psi | 80% | 2667 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 29,776 psi | 54% | 2379 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,234 psi | 73% | 2635 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 92% | 45,107 psi | 82% | 2759 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,368 psi | 48% | 1535 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,496 psi | 77% | 2615 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 43,874 psi | 80% | 2661 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,305 psi | 71% | 2539 fps | 97.9% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,411 psi | 81% | 2608 fps | 95.5% |
| IMR 4350 | <<locked>> | 94% | 45,411 psi | 82% | 2684 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,324 psi | 80% | 2638 fps | 95.4% |
| IMR 4831 | <<locked>> | 86% | 33,286 psi | 60% | 2480 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 40,640 psi | 74% | 2621 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 80% | 46,021 psi | 84% | 2664 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 43,076 psi | 78% | 2635 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,092 psi | 80% | 2592 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 39,175 psi | 71% | 2543 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 38,711 psi | 70% | 2536 fps | 95.4% |
| Lovex S070 | <<locked>> | 90% | 41,568 psi | 75% | 2615 fps | 95% |
| Norma 201 | <<locked>> | 80% | 43,149 psi | 78% | 2608 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 43,468 psi | 79% | 2618 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,059 psi | 71% | 2579 fps | 98.3% |
| Norma URP | <<locked>> | 86% | 34,635 psi | 63% | 2523 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 38,537 psi | 70% | 2592 fps | 98% |
| Ramshot Hunter | <<locked>> | 92% | 41,162 psi | 75% | 2671 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 45,948 psi | 83% | 2667 fps | 97.5% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,426 psi | 82% | 2690 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,614 psi | 48% | 1568 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,509 psi | 74% | 2572 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,611 psi | 76% | 2690 fps | 98.3% |
| ReloadSwiss RS 60 | 54.8 gr | 80% | 34,011 psi | 62% | 2562 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 34,040 psi | 62% | 2536 fps | 95% |
| ReloadSwiss RS 70 | 61.2 gr | 88% | 36,753 psi | 67% | 2602 fps | 95% |
| Rottweil R 901 | <<locked>> | 80% | 47,079 psi | 85% | 2648 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,944 psi | 74% | 2559 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 34,330 psi | 62% | 2474 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 90% | 45,310 psi | 82% | 2657 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,711 psi | 70% | 2536 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,076 psi | 78% | 2635 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,175 psi | 71% | 2543 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 41,568 psi | 75% | 2615 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,302 psi | 64% | 2523 fps | 97.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,164 psi | 80% | 2641 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,453 psi | 77% | 2621 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,527 psi | 81% | 2562 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,999 psi | 67% | 2431 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,482 psi | 79% | 2585 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 44,121 psi | 80% | 2566 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,947 psi | 80% | 2641 fps | 99% |
| Somchem S355 | <<locked>> | 80% | 35,331 psi | 64% | 2484 fps | 97.7% |
| Somchem S365 | <<locked>> | 80% | 25,541 psi | 46% | 2310 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 44,831 psi | 81% | 2556 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,524 psi | 74% | 2546 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,973 psi | 74% | 2552 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,460 psi | 61% | 2421 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 84% | 33,939 psi | 62% | 2474 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 46,151 psi | 84% | 2661 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 39,436 psi | 72% | 2539 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 35,534 psi | 64% | 2526 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 92% | 31,981 psi | 58% | 2513 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,805 psi | 54% | 2343 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 45,585 psi | 83% | 2703 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 42,163 psi | 77% | 2684 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,994 psi | 54% | 2513 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,785 psi | 76% | 2625 fps | 99.2% |
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 85 powders for 8 x 75 RS loaded with the .323 | 185gr | Prvi Partizan Grom. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,864 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,864 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 185.0 gr projectile in 0.323" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, Hodgdon Hybrid 100V 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 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for 8 x 75 RS with the .323 | 185gr | Prvi Partizan Grom 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.