Load Specifications
Load data in caliber 8 x 75 RS with .323 | 170gr | Speer Hot-Cor bullet and 80 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 Alliant Reloder-16.
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 2495 | <<locked>> | 86% | 49,545 psi | 90% | 2831 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 49,501 psi | 90% | 2874 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 48,776 psi | 89% | 2940 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 82% | 47,079 psi | 85% | 2848 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 88% | 48,182 psi | 87% | 2851 fps | 99% |
| ADI Benchmark 8208 | <<locked>> | 82% | 49,269 psi | 89% | 2854 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 82% | 49,603 psi | 90% | 2838 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 49,269 psi | 89% | 3009 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 47,921 psi | 87% | 2874 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 86% | 48,399 psi | 88% | 2890 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 96% | 47,398 psi | 86% | 2946 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 47,935 psi | 87% | 2982 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,464 psi | 70% | 2779 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,946 psi | 78% | 2943 fps | 97.3% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 49,690 psi | 90% | 2910 fps | 98.9% |
| Bofors RP3 | <<locked>> | 88% | 48,153 psi | 87% | 2884 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 82% | 48,167 psi | 87% | 2877 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 48,965 psi | 89% | 2890 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 94% | 48,399 psi | 88% | 2933 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 82% | 47,529 psi | 86% | 2858 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 46,920 psi | 85% | 2881 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 49,792 psi | 90% | 2943 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,331 psi | 64% | 1821 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 48,617 psi | 88% | 2861 fps | 99.6% |
| IMR 3031 | <<locked>> | 82% | 47,094 psi | 85% | 2848 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 47,558 psi | 86% | 2831 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 84% | 47,659 psi | 86% | 2802 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 47,384 psi | 86% | 2825 fps | 95.7% |
| IMR 4831 | <<locked>> | 98% | 49,719 psi | 90% | 2936 fps | 98.9% |
| IMR 4895 | <<locked>> | 86% | 49,632 psi | 90% | 2923 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 82% | 49,269 psi | 89% | 2854 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 84% | 49,559 psi | 90% | 2877 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 46,949 psi | 85% | 2779 fps | 99.2% |
| Lovex S062 | <<locked>> | 86% | 47,326 psi | 86% | 2831 fps | 99.8% |
| Lovex S065 | <<locked>> | 94% | 49,835 psi | 90% | 2877 fps | 97.7% |
| Lovex S070 | <<locked>> | 94% | 47,471 psi | 86% | 2854 fps | 96.1% |
| Norma 201 | <<locked>> | 84% | 49,008 psi | 89% | 2848 fps | 99.9% |
| Norma 202 | <<locked>> | 84% | 49,371 psi | 90% | 2854 fps | 100% |
| Norma 203B | <<locked>> | 86% | 47,630 psi | 86% | 2877 fps | 99.3% |
| Norma URP | <<locked>> | 96% | 48,385 psi | 88% | 2933 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 86% | 47,616 psi | 86% | 2894 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 96% | 47,268 psi | 86% | 2920 fps | 96.9% |
| Ramshot TAC | <<locked>> | 82% | 49,313 psi | 89% | 2861 fps | 97.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 48,762 psi | 88% | 2881 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,868 psi | 65% | 1867 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 49,516 psi | 90% | 2874 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 48,124 psi | 87% | 2949 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 47,877 psi | 87% | 2989 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 48,443 psi | 88% | 2959 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 48,501 psi | 88% | 2982 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 86% | 49,501 psi | 90% | 2848 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 90% | 48,008 psi | 87% | 2877 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 49,835 psi | 90% | 2877 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 49,559 psi | 90% | 2877 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 47,326 psi | 86% | 2831 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 94% | 47,471 psi | 86% | 2854 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 49,414 psi | 90% | 2933 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 47,674 psi | 87% | 2835 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 48,559 psi | 88% | 2867 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 47,587 psi | 86% | 2746 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 47,543 psi | 86% | 2746 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 49,734 psi | 90% | 2822 fps | 96.4% |
| Somchem S335 | <<locked>> | 82% | 46,949 psi | 85% | 2746 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 47,369 psi | 86% | 2835 fps | 99.2% |
| Somchem S355 | <<locked>> | 90% | 48,573 psi | 88% | 2877 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,371 psi | 90% | 2992 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 47,892 psi | 87% | 2740 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 49,095 psi | 89% | 2822 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 49,835 psi | 90% | 2835 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 49,792 psi | 90% | 2858 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 47,442 psi | 86% | 2877 fps | 98.4% |
| Vihtavuori N530 | <<locked>> | 82% | 49,429 psi | 90% | 2851 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 86% | 48,196 psi | 87% | 2828 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 46,601 psi | 85% | 2877 fps | 98.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,829 psi | 76% | 2861 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 47,616 psi | 86% | 2854 fps | 99.7% |
| Winchester 748 | <<locked>> | 82% | 49,240 psi | 89% | 2900 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 48,631 psi | 88% | 2940 fps | 96.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,403 psi | 62% | 2766 fps | 97.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 48,240 psi | 88% | 2877 fps | 99.7% |
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% | 40,683 psi | 74% | 2684 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 38,479 psi | 70% | 2674 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,505 psi | 63% | 2644 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 44,208 psi | 80% | 2789 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 37,492 psi | 68% | 2631 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,224 psi | 84% | 2802 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 46,528 psi | 84% | 2792 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,045 psi | 73% | 2812 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,173 psi | 67% | 2657 fps | 98.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,958 psi | 73% | 2723 fps | 97.5% |
| Alliant Reloder-16 | 58.7 gr | 86% | 34,809 psi | 63% | 2657 fps | 95.1% |
| Alliant Reloder-17 | 58.8 gr | 80% | 32,024 psi | 58% | 2612 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,981 psi | 58% | 2608 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,144 psi | 67% | 2802 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,250 psi | 78% | 2789 fps | 97.8% |
| Bofors RP3 | <<locked>> | 80% | 36,767 psi | 67% | 2661 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,962 psi | 82% | 2818 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 80% | 37,637 psi | 68% | 2661 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 92% | 45,368 psi | 82% | 2877 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 44,614 psi | 81% | 2805 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,023 psi | 54% | 2497 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,567 psi | 74% | 2769 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,339 psi | 48% | 1627 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,743 psi | 78% | 2753 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 44,164 psi | 80% | 2799 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,334 psi | 71% | 2667 fps | 97.4% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,570 psi | 81% | 2743 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,744 psi | 81% | 2776 fps | 95% |
| IMR 4831 | <<locked>> | 88% | 35,752 psi | 65% | 2657 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 40,886 psi | 74% | 2753 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 80% | 46,224 psi | 84% | 2802 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 43,265 psi | 79% | 2769 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,309 psi | 80% | 2726 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 39,407 psi | 72% | 2677 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 38,986 psi | 71% | 2664 fps | 95% |
| Lovex S070 | <<locked>> | 92% | 44,556 psi | 81% | 2799 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 43,352 psi | 79% | 2743 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 43,613 psi | 79% | 2753 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,320 psi | 71% | 2710 fps | 97.9% |
| Norma URP | <<locked>> | 86% | 34,795 psi | 63% | 2648 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 38,682 psi | 70% | 2717 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 92% | 41,481 psi | 75% | 2802 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 46,195 psi | 84% | 2805 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,614 psi | 83% | 2825 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,716 psi | 48% | 1670 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,482 psi | 79% | 2759 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,843 psi | 76% | 2825 fps | 98% |
| ReloadSwiss RS 60 | 58.8 gr | 80% | 34,098 psi | 62% | 2684 fps | 99% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,651 psi | 67% | 2720 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,552 psi | 72% | 2789 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 41,220 psi | 75% | 2694 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 34,635 psi | 63% | 2602 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,986 psi | 71% | 2664 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,265 psi | 79% | 2769 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,407 psi | 72% | 2677 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 92% | 44,556 psi | 81% | 2799 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,491 psi | 64% | 2648 fps | 96.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,527 psi | 81% | 2776 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,656 psi | 77% | 2756 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,556 psi | 81% | 2697 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,028 psi | 67% | 2556 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 46,601 psi | 85% | 2766 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 44,324 psi | 80% | 2700 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,077 psi | 80% | 2772 fps | 98.7% |
| Somchem S355 | <<locked>> | 80% | 35,520 psi | 64% | 2608 fps | 97.3% |
| Somchem S365 | <<locked>> | 82% | 27,441 psi | 50% | 2480 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 44,860 psi | 81% | 2690 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,553 psi | 74% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,278 psi | 75% | 2687 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,736 psi | 61% | 2543 fps | 98.1% |
| Vihtavuori N160 | <<locked>> | 86% | 36,448 psi | 66% | 2651 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 46,354 psi | 84% | 2795 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 39,740 psi | 72% | 2671 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 35,882 psi | 65% | 2651 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 94% | 34,330 psi | 62% | 2687 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,878 psi | 54% | 2457 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 45,919 psi | 83% | 2841 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 45,368 psi | 82% | 2877 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,255 psi | 55% | 2628 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,076 psi | 76% | 2759 fps | 98.9% |
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 103 powders for 8 x 75 RS loaded with the .323 | 170gr | Speer Hot-Cor. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,009 fps; across all powders the maximum-charge window runs from 1,821 fps to 3,009 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (380 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 3100, ADI AR 2209, Alliant Reloder-19 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, Alliant Reloder-16 rank at the top here: for 8 x 75 RS with the .323 | 170gr | Speer Hot-Cor they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 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.