Load Specifications
Load data in caliber 8 x 75 RS with .323 | 180gr | Hornady GMX bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and SNPE Vectan SP 11.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 47,123 psi | 86% | 2648 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 47,471 psi | 86% | 2703 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 46,398 psi | 84% | 2717 fps | 100% |
| Accurate 4064 | <<locked>> | 90% | 47,572 psi | 86% | 2746 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 46,702 psi | 85% | 2805 fps | 98.4% |
| ADI AR 2206H | <<locked>> | 86% | 49,414 psi | 90% | 2782 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 90% | 47,340 psi | 86% | 2730 fps | 98.8% |
| ADI Benchmark 8208 | <<locked>> | 84% | 48,631 psi | 88% | 2736 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 84% | 48,660 psi | 88% | 2723 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 48,327 psi | 88% | 2881 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 49,806 psi | 90% | 2799 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 88% | 47,268 psi | 86% | 2766 fps | 98.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,458 psi | 90% | 2874 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 94% | 46,746 psi | 85% | 2854 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,635 psi | 63% | 2592 fps | 96.8% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 48,863 psi | 89% | 2789 fps | 98.8% |
| Bofors RP3 | <<locked>> | 90% | 46,572 psi | 85% | 2756 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 47,485 psi | 86% | 2677 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 84% | 47,340 psi | 86% | 2762 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 82% | 48,776 psi | 89% | 2848 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 90% | 47,848 psi | 87% | 2766 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 96% | 47,195 psi | 86% | 2808 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 84% | 46,673 psi | 85% | 2740 fps | 99.5% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,266 psi | 82% | 2749 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 48,588 psi | 88% | 2818 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,882 psi | 63% | 1722 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 48,008 psi | 87% | 2746 fps | 99.6% |
| IMR 3031 | <<locked>> | 86% | 49,182 psi | 89% | 2779 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 49,806 psi | 90% | 2762 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 94% | 49,690 psi | 90% | 2759 fps | 96.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,848 psi | 87% | 2805 fps | 98.6% |
| IMR 4895 | <<locked>> | 88% | 48,457 psi | 88% | 2799 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 84% | 48,631 psi | 88% | 2736 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 86% | 48,225 psi | 88% | 2756 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 49,588 psi | 90% | 2717 fps | 99.5% |
| Lovex S062 | <<locked>> | 90% | 49,269 psi | 89% | 2759 fps | 99.9% |
| Lovex S065 | <<locked>> | 96% | 48,675 psi | 88% | 2753 fps | 97.4% |
| Lovex S070 | <<locked>> | 98% | 49,168 psi | 89% | 2782 fps | 96.4% |
| Norma 201 | <<locked>> | 86% | 48,095 psi | 87% | 2726 fps | 99.8% |
| Norma 202 | <<locked>> | 86% | 48,602 psi | 88% | 2736 fps | 100% |
| Norma 203B | <<locked>> | 90% | 49,676 psi | 90% | 2808 fps | 99.5% |
| Norma URP | <<locked>> | 98% | 46,818 psi | 85% | 2802 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 88% | 46,441 psi | 84% | 2772 fps | 99.1% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,168 psi | 89% | 2848 fps | 97.2% |
| Ramshot TAC | <<locked>> | 84% | 48,646 psi | 88% | 2743 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 47,979 psi | 87% | 2762 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 82% | 49,385 psi | 90% | 2733 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,186 psi | 64% | 1762 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 48,617 psi | 88% | 2749 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 46,818 psi | 85% | 2822 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 46,717 psi | 85% | 2861 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 46,586 psi | 85% | 2828 fps | 98.1% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 47,384 psi | 86% | 2851 fps | 97.7% |
| Rottweil R 901 | <<locked>> | 84% | 48,921 psi | 89% | 2713 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 48,443 psi | 88% | 2726 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 94% | 49,792 psi | 90% | 2802 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 48,675 psi | 88% | 2753 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 86% | 48,225 psi | 88% | 2756 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 49,269 psi | 89% | 2759 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 98% | 49,168 psi | 89% | 2782 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 48,196 psi | 87% | 2808 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 46,833 psi | 85% | 2717 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 47,747 psi | 87% | 2749 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 46,949 psi | 85% | 2631 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 46,891 psi | 85% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 48,747 psi | 88% | 2700 fps | 96% |
| Somchem S321 | <<locked>> | 82% | 49,385 psi | 90% | 2766 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 49,298 psi | 89% | 2680 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 49,806 psi | 90% | 2769 fps | 99.4% |
| Somchem S355 | <<locked>> | 92% | 47,340 psi | 86% | 2753 fps | 99.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,541 psi | 81% | 2805 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 84% | 47,166 psi | 86% | 2625 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 47,950 psi | 87% | 2700 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 48,994 psi | 89% | 2717 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 48,631 psi | 88% | 2736 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 49,124 psi | 89% | 2802 fps | 98.6% |
| Vihtavuori N530 | <<locked>> | 84% | 48,907 psi | 89% | 2736 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 88% | 47,210 psi | 86% | 2710 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 48,312 psi | 88% | 2805 fps | 98.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,144 psi | 67% | 2667 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 46,731 psi | 85% | 2733 fps | 99.6% |
| Winchester 748 | <<locked>> | 84% | 48,356 psi | 88% | 2782 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 47,195 psi | 86% | 2808 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 47,282 psi | 86% | 2756 fps | 99.6% |
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 2015 | <<locked>> | 80% | 44,222 psi | 80% | 2602 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,332 psi | 66% | 2513 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,337 psi | 79% | 2664 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,418 psi | 62% | 2500 fps | 99.7% |
| Accurate 4350 | <<locked>> | 90% | 35,215 psi | 64% | 2579 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 40,712 psi | 74% | 2621 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 80% | 34,621 psi | 63% | 2470 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,844 psi | 78% | 2635 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 42,322 psi | 77% | 2625 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,796 psi | 67% | 2635 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,692 psi | 61% | 2487 fps | 97.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,492 psi | 66% | 2549 fps | 96.6% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,071 psi | 65% | 2595 fps | 95.6% |
| Alliant Reloder-17 | 54.4 gr | 82% | 31,183 psi | 57% | 2497 fps | 95.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,676 psi | 56% | 2484 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,697 psi | 72% | 2618 fps | 96.9% |
| Bofors RP3 | <<locked>> | 80% | 32,996 psi | 60% | 2484 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,701 psi | 81% | 2628 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,191 psi | 75% | 2651 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,295 psi | 82% | 2789 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 82% | 36,651 psi | 67% | 2546 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 94% | 44,106 psi | 80% | 2749 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 41,075 psi | 75% | 2635 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 30,821 psi | 56% | 2434 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,840 psi | 67% | 2595 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,773 psi | 47% | 1535 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,465 psi | 72% | 2585 fps | 98.3% |
| IMR 3031 | <<locked>> | 80% | 40,364 psi | 73% | 2635 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,289 psi | 66% | 2503 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 46,572 psi | 85% | 2707 fps | 95.4% |
| IMR 4831 | <<locked>> | 90% | 34,185 psi | 62% | 2533 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 37,391 psi | 68% | 2582 fps | 97.5% |
| IMR 8208 XBR | <<locked>> | 80% | 42,844 psi | 78% | 2635 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 39,204 psi | 71% | 2598 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 41,176 psi | 75% | 2566 fps | 98.3% |
| Lovex S062 | <<locked>> | 80% | 35,940 psi | 65% | 2507 fps | 98.2% |
| Lovex S065 | <<locked>> | 90% | 40,176 psi | 73% | 2592 fps | 95.3% |
| Lovex S070 | <<locked>> | 96% | 46,035 psi | 84% | 2726 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 39,755 psi | 72% | 2575 fps | 99% |
| Norma 202 | <<locked>> | 80% | 39,900 psi | 72% | 2585 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,868 psi | 65% | 2539 fps | 97% |
| Norma URP | <<locked>> | 90% | 35,955 psi | 65% | 2585 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 35,375 psi | 64% | 2549 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 96% | 43,120 psi | 78% | 2736 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 42,612 psi | 77% | 2631 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,887 psi | 76% | 2651 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,354 psi | 84% | 2684 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,150 psi | 47% | 1575 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 42,453 psi | 77% | 2638 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,840 psi | 69% | 2644 fps | 97% |
| ReloadSwiss RS 60 | 53 gr | 80% | 30,966 psi | 56% | 2503 fps | 98% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,724 psi | 68% | 2654 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,249 psi | 75% | 2726 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 43,294 psi | 79% | 2618 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,623 psi | 68% | 2523 fps | 98.5% |
| Rottweil R 903 | <<locked>> | 80% | 31,009 psi | 56% | 2425 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,176 psi | 73% | 2592 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,204 psi | 71% | 2598 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 35,940 psi | 65% | 2507 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 96% | 46,035 psi | 84% | 2726 fps | 95.7% |
| SNPE Vectan SP 11 | 52.2 gr | 80% | 32,271 psi | 59% | 2477 fps | 95.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,495 psi | 73% | 2598 fps | 96.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,175 psi | 71% | 2589 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,336 psi | 75% | 2536 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,069 psi | 62% | 2402 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 45,426 psi | 82% | 2644 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 45,992 psi | 83% | 2710 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 40,915 psi | 74% | 2539 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,422 psi | 73% | 2602 fps | 98% |
| Somchem S355 | <<locked>> | 80% | 32,169 psi | 58% | 2441 fps | 96.2% |
| Somchem S365 | <<locked>> | 86% | 28,065 psi | 51% | 2418 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 41,611 psi | 76% | 2536 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,912 psi | 67% | 2516 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,768 psi | 69% | 2523 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 30,472 psi | 55% | 2379 fps | 97.1% |
| Vihtavuori N160 | <<locked>> | 88% | 35,259 psi | 64% | 2533 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 42,699 psi | 77% | 2628 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 36,405 psi | 66% | 2510 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 36,912 psi | 67% | 2585 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 96% | 32,518 psi | 59% | 2559 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,125 psi | 56% | 2405 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 41,945 psi | 76% | 2671 fps | 99.7% |
| Winchester 760 | <<locked>> | 94% | 44,106 psi | 80% | 2749 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,479 psi | 70% | 2589 fps | 98.2% |
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 84 powders for 8 x 75 RS loaded with the .323 | 180gr | Hornady GMX. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,881 fps; across all powders the maximum-charge window runs from 1,722 fps to 2,881 fps. Alliant Reloder-16 gives the best case fill at 100 %, and 84 of the 84 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 MPa), the top charges use 63–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.323" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, Alliant Reloder-23, 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 60, Alliant Reloder-17, SNPE Vectan SP 11 rank at the top here: for 8 x 75 RS with the .323 | 180gr | Hornady GMX 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.