Load Specifications
Bullet:.323 | 200gr | Speer Hot-Cor
Bullet Manufacturer:Speer
Bullet Weight:200 gr
Bullet Diameter:0.323"
Bullet Length:<<locked>>
Caliber:8 x 75 S load data
Case Length (l3):2.941"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:81 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:25.6"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:14.5
Load data in caliber 8 x 75 S with .323 | 200gr | Speer Hot-Cor bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Hodgdon H414.
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 2015 | <<locked>> | 84% | 57,464 psi | 90% | 2651 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,536 psi | 89% | 2680 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,346 psi | 85% | 2697 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,332 psi | 87% | 2690 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,294 psi | 68% | 2602 fps | 97.5% |
| Accurate 4064 | <<locked>> | 90% | 56,579 psi | 89% | 2730 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 56,434 psi | 88% | 2822 fps | 100% |
| ADI AR 2206H | <<locked>> | 86% | 56,478 psi | 89% | 2759 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 57,551 psi | 90% | 2759 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 51,155 psi | 80% | 2749 fps | 96.4% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,419 psi | 87% | 2710 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 56,652 psi | 89% | 2677 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 56,362 psi | 88% | 2884 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 50,734 psi | 80% | 2743 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,346 psi | 85% | 2736 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,723 psi | 86% | 2756 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 57,334 psi | 90% | 2874 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,071 psi | 86% | 2858 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 49,980 psi | 78% | 2736 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,234 psi | 65% | 2631 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,369 psi | 73% | 2795 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,362 psi | 88% | 2779 fps | 100% |
| Bofors RP3 | <<locked>> | 90% | 54,984 psi | 86% | 2753 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,056 psi | 86% | 2730 fps | 98.1% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,130 psi | 90% | 2690 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,911 psi | 86% | 2740 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 57,203 psi | 90% | 2841 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 55,680 psi | 87% | 2766 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 96% | 55,622 psi | 87% | 2822 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 94% | 56,159 psi | 88% | 2785 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 86% | 57,087 psi | 89% | 2769 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,780 psi | 84% | 2753 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 56,768 psi | 89% | 2805 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 56,101 psi | 88% | 2861 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,868 psi | 56% | 1663 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 54,708 psi | 86% | 2720 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 57,377 psi | 90% | 2746 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,014 psi | 89% | 2743 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 88% | 56,884 psi | 89% | 2730 fps | 98.8% |
| IMR 4350 | <<locked>> | 98% | 55,259 psi | 87% | 2756 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 56,826 psi | 89% | 2759 fps | 98.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,811 psi | 89% | 2812 fps | 100% |
| IMR 4895 | <<locked>> | 88% | 56,130 psi | 88% | 2782 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,419 psi | 87% | 2710 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 56,710 psi | 89% | 2736 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,898 psi | 88% | 2687 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 57,159 psi | 90% | 2740 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,101 psi | 88% | 2749 fps | 99.5% |
| Lovex S070 | <<locked>> | 98% | 57,159 psi | 90% | 2785 fps | 99% |
| Norma 201 | <<locked>> | 86% | 55,332 psi | 87% | 2707 fps | 100% |
| Norma 202 | <<locked>> | 86% | 55,854 psi | 88% | 2703 fps | 100% |
| Norma 203B | <<locked>> | 90% | 57,653 psi | 90% | 2795 fps | 100% |
| Norma 204 | <<locked>> | 98% | 55,811 psi | 87% | 2802 fps | 97.2% |
| Norma MRPᴾ | <<locked>> | 100% | 46,108 psi | 72% | 2749 fps | 97.1% |
| Norma URP | <<locked>> | 98% | 55,303 psi | 87% | 2808 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 54,520 psi | 85% | 2769 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 54,027 psi | 85% | 2805 fps | 99.2% |
| Ramshot TAC | <<locked>> | 84% | 55,593 psi | 87% | 2733 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,405 psi | 87% | 2749 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,144 psi | 88% | 2710 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,332 psi | 57% | 1699 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,898 psi | 88% | 2746 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,492 psi | 87% | 2822 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 54,766 psi | 86% | 2854 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 56,101 psi | 88% | 2844 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,390 psi | 87% | 2874 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 84% | 56,434 psi | 88% | 2687 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 55,912 psi | 88% | 2703 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,781 psi | 86% | 2743 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 48,675 psi | 76% | 2717 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 94% | 55,056 psi | 86% | 2730 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,101 psi | 88% | 2749 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 86% | 56,710 psi | 89% | 2736 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,159 psi | 90% | 2740 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 57,159 psi | 90% | 2785 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 56,420 psi | 88% | 2802 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,143 psi | 85% | 2713 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,027 psi | 86% | 2736 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,811 psi | 89% | 2641 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 57,029 psi | 89% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 56,362 psi | 88% | 2703 fps | 98.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 48,254 psi | 76% | 2713 fps | 96.1% |
| Somchem S321 | <<locked>> | 82% | 56,768 psi | 89% | 2743 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,072 psi | 88% | 2638 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 57,464 psi | 90% | 2753 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 55,201 psi | 87% | 2743 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,490 psi | 84% | 2808 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,647 psi | 78% | 2703 fps | 97.3% |
| Vihtavuori N130 | <<locked>> | 82% | 56,463 psi | 88% | 2598 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 57,087 psi | 89% | 2625 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,738 psi | 87% | 2664 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 56,391 psi | 88% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 56,507 psi | 89% | 2717 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 54,230 psi | 85% | 2753 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 84% | 55,941 psi | 88% | 2710 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 54,549 psi | 85% | 2684 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,797 psi | 89% | 2808 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,658 psi | 72% | 2703 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,273 psi | 85% | 2730 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 56,130 psi | 88% | 2756 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,622 psi | 87% | 2822 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,999 psi | 58% | 2651 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 54,911 psi | 86% | 2743 fps | 100% |
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% | 50,879 psi | 80% | 2566 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,569 psi | 68% | 2500 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 50,734 psi | 80% | 2648 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 42,627 psi | 67% | 2484 fps | 95.2% |
| Accurate 3100 | <<locked>> | 94% | 35,389 psi | 55% | 2444 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 41,234 psi | 65% | 2500 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,458 psi | 48% | 2343 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 46,949 psi | 74% | 2615 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 39,798 psi | 62% | 2470 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 98% | 47,993 psi | 75% | 2694 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,008 psi | 77% | 2615 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,864 psi | 78% | 2592 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,786 psi | 67% | 2654 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 47,601 psi | 75% | 2690 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,668 psi | 62% | 2493 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,627 psi | 67% | 2556 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,835 psi | 48% | 2352 fps | 95.3% |
| Alliant Reloder-17 | 55.2 gr | 80% | 34,403 psi | 54% | 2477 fps | 98.4% |
| Alliant Reloder-19 | <<locked>> | 98% | 46,934 psi | 74% | 2684 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 86% | 26,847 psi | 42% | 2270 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 90% | 32,648 psi | 51% | 2490 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,224 psi | 72% | 2621 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 39,595 psi | 62% | 2500 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 42,873 psi | 67% | 2523 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,604 psi | 79% | 2598 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,066 psi | 75% | 2641 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 53,185 psi | 83% | 2785 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,161 psi | 63% | 2503 fps | 97.8% |
| Hodgdon H414 | 58 gr | 86% | 39,871 psi | 62% | 2549 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 88% | 46,412 psi | 73% | 2625 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 47,413 psi | 74% | 2621 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,384 psi | 44% | 2260 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,424 psi | 68% | 2598 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 42,105 psi | 66% | 2618 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,614 psi | 42% | 1480 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,382 psi | 71% | 2575 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 47,297 psi | 74% | 2608 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,814 psi | 66% | 2500 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 44,309 psi | 69% | 2523 fps | 96.6% |
| IMR 4350 | <<locked>> | 90% | 42,975 psi | 67% | 2549 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 39,407 psi | 62% | 2454 fps | 95% |
| IMR 4831 | <<locked>> | 82% | 31,763 psi | 50% | 2359 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 43,671 psi | 68% | 2582 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 49,008 psi | 77% | 2615 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,354 psi | 73% | 2592 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,775 psi | 73% | 2549 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 42,003 psi | 66% | 2507 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 34,389 psi | 54% | 2356 fps | 95.1% |
| Lovex S070 | <<locked>> | 86% | 39,421 psi | 62% | 2484 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 45,876 psi | 72% | 2562 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,282 psi | 73% | 2566 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,974 psi | 66% | 2543 fps | 99.4% |
| Norma 204 | <<locked>> | 94% | 48,834 psi | 77% | 2690 fps | 95.7% |
| Norma MRP | <<locked>> | 96% | 40,393 psi | 63% | 2635 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 30,835 psi | 48% | 2343 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 41,568 psi | 65% | 2559 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 36,593 psi | 57% | 2487 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 48,863 psi | 77% | 2628 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,573 psi | 76% | 2648 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,663 psi | 83% | 2661 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,108 psi | 42% | 1519 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,524 psi | 64% | 2487 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,121 psi | 71% | 2657 fps | 99.5% |
| ReloadSwiss RS 60 | 55.2 gr | 80% | 36,608 psi | 57% | 2536 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,358 psi | 51% | 2411 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 34,505 psi | 54% | 2467 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 50,125 psi | 79% | 2595 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,772 psi | 69% | 2520 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,130 psi | 58% | 2444 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 98% | 45,585 psi | 71% | 2664 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 86% | 42,873 psi | 67% | 2523 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,389 psi | 54% | 2356 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,354 psi | 73% | 2592 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 42,003 psi | 66% | 2507 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 39,421 psi | 62% | 2484 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,087 psi | 60% | 2497 fps | 98.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,268 psi | 74% | 2605 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,382 psi | 71% | 2585 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,108 psi | 74% | 2507 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,378 psi | 62% | 2385 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,002 psi | 64% | 2454 fps | 95.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 45,165 psi | 71% | 2657 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 53,127 psi | 83% | 2690 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,717 psi | 73% | 2510 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,065 psi | 74% | 2602 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 37,855 psi | 59% | 2448 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 27,659 psi | 43% | 2300 fps | 97.4% |
| Somchem S385 | <<locked>> | 94% | 40,785 psi | 64% | 2546 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 53,040 psi | 83% | 2556 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,514 psi | 74% | 2497 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,410 psi | 68% | 2493 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,845 psi | 69% | 2503 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 36,056 psi | 56% | 2388 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 32,169 psi | 50% | 2346 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 49,255 psi | 77% | 2615 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,235 psi | 66% | 2497 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 31,604 psi | 50% | 2346 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 86% | 28,761 psi | 45% | 2343 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,894 psi | 50% | 2323 fps | 97.8% |
| Winchester 748 | <<locked>> | 80% | 48,950 psi | 77% | 2654 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 40,074 psi | 63% | 2556 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 90% | 26,832 psi | 42% | 2339 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,860 psi | 70% | 2585 fps | 99.9% |
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 S loaded with the .323 | 200gr | Speer Hot-Cor. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,884 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,884 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 (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.323" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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. Alliant Reloder-17, ReloadSwiss RS 60, Hodgdon H414 rank at the top here: for 8 x 75 S with the .323 | 200gr | Speer Hot-Cor 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.