Load Specifications
Bullet Manufacturer:Impala Bullets
Bullet Weight:200 gr
Bullet Diameter:0.323"
Bullet Length:<<locked>>
Caliber:8 x 68 S load data
Case Length (l3):2.657"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:86 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:13.0
Load data in caliber 8 x 68 S with .323 | 200gr | Impala RNFP KO bullet and 102 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>> | 84% | 55,811 psi | 87% | 2661 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,014 psi | 88% | 2707 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,052 psi | 77% | 2694 fps | 98.7% |
| Accurate 4064 | <<locked>> | 86% | 55,651 psi | 87% | 2710 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,795 psi | 86% | 2799 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 57,305 psi | 90% | 2772 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,853 psi | 86% | 2726 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,317 psi | 87% | 2825 fps | 97.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,115 psi | 88% | 2720 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,884 psi | 89% | 2897 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,405 psi | 87% | 2749 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,970 psi | 88% | 2776 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,940 psi | 86% | 2844 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,072 psi | 88% | 2874 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,462 psi | 85% | 2815 fps | 97.5% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 48,312 psi | 76% | 2762 fps | 96.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,701 psi | 72% | 2713 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,466 psi | 63% | 2631 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,459 psi | 81% | 2887 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,898 psi | 89% | 2789 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 56,550 psi | 89% | 2772 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 48,312 psi | 76% | 2762 fps | 96.4% |
| Bofors RP7 | <<locked>> | 92% | 55,811 psi | 87% | 2743 fps | 98.5% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,276 psi | 90% | 2694 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,043 psi | 88% | 2756 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,956 psi | 89% | 2785 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 94% | 56,608 psi | 89% | 2841 fps | 99.1% |
| Hodgdon H4350 | <<locked>> | 92% | 56,782 psi | 89% | 2799 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 82% | 54,650 psi | 86% | 2736 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,143 psi | 86% | 2769 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 57,537 psi | 90% | 2815 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,753 psi | 89% | 2877 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,419 psi | 57% | 1677 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,216 psi | 87% | 2733 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,911 psi | 86% | 2713 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,549 psi | 85% | 2713 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,145 psi | 90% | 2740 fps | 99% |
| IMR 4350 | <<locked>> | 96% | 55,941 psi | 88% | 2769 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,334 psi | 90% | 2772 fps | 99% |
| IMR 4831 | <<locked>> | 96% | 55,056 psi | 86% | 2789 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 57,377 psi | 90% | 2802 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 54,998 psi | 86% | 2753 fps | 95.6% |
| IMR 8208 XBR | <<locked>> | 82% | 56,115 psi | 88% | 2720 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,621 psi | 86% | 2707 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,275 psi | 88% | 2697 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,926 psi | 86% | 2710 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,493 psi | 90% | 2772 fps | 99.7% |
| Lovex S070 | <<locked>> | 94% | 55,100 psi | 86% | 2759 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,205 psi | 65% | 2559 fps | 97.2% |
| Norma 201 | <<locked>> | 84% | 56,637 psi | 89% | 2723 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,869 psi | 89% | 2717 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,245 psi | 87% | 2762 fps | 100% |
| Norma 204 | <<locked>> | 96% | 56,681 psi | 89% | 2822 fps | 97.6% |
| Norma MRPᴾ | <<locked>> | 100% | 50,894 psi | 80% | 2841 fps | 98.3% |
| Norma URP | <<locked>> | 96% | 56,695 psi | 89% | 2831 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 55,332 psi | 87% | 2782 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,274 psi | 87% | 2831 fps | 99.4% |
| Ramshot TAC | <<locked>> | 82% | 56,115 psi | 88% | 2746 fps | 99.7% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,927 psi | 88% | 2759 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,014 psi | 58% | 1716 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,782 psi | 89% | 2766 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,565 psi | 89% | 2841 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,796 psi | 87% | 2871 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 57,740 psi | 90% | 2871 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,318 psi | 88% | 2894 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,217 psi | 90% | 2720 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,637 psi | 89% | 2766 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 57,116 psi | 90% | 2792 fps | 96.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,345 psi | 84% | 2799 fps | 97.5% |
| Rottweil R 907 | <<locked>> | 92% | 55,811 psi | 87% | 2743 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,493 psi | 90% | 2772 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,621 psi | 86% | 2707 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,926 psi | 86% | 2710 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,100 psi | 86% | 2759 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 57,363 psi | 90% | 2818 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,259 psi | 87% | 2730 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,738 psi | 87% | 2746 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,363 psi | 90% | 2651 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,667 psi | 90% | 2648 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,508 psi | 90% | 2723 fps | 99% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,837 psi | 83% | 2792 fps | 97.4% |
| Somchem S335 | <<locked>> | 84% | 57,043 psi | 89% | 2651 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,578 psi | 86% | 2717 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,420 psi | 88% | 2759 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,230 psi | 87% | 2831 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,505 psi | 85% | 2779 fps | 98.3% |
| Vihtavuori N133 | <<locked>> | 84% | 57,580 psi | 90% | 2631 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,942 psi | 89% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,145 psi | 90% | 2694 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 57,551 psi | 90% | 2733 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,332 psi | 87% | 2772 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 47,181 psi | 74% | 2651 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 82% | 56,608 psi | 89% | 2720 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,434 psi | 87% | 2697 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,694 psi | 86% | 2782 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,894 psi | 80% | 2789 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,882 psi | 86% | 2743 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,942 psi | 89% | 2769 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 56,608 psi | 89% | 2841 fps | 99.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,394 psi | 65% | 2756 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,738 psi | 87% | 2756 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,981 psi | 80% | 2717 fps | 96.6% |
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 2495 | <<locked>> | 80% | 49,617 psi | 78% | 2579 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,514 psi | 73% | 2552 fps | 96.5% |
| Accurate 3100 | <<locked>> | 90% | 35,708 psi | 56% | 2444 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 46,862 psi | 73% | 2582 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,070 psi | 55% | 2444 fps | 97.2% |
| ADI AR 2206H | <<locked>> | 80% | 50,850 psi | 80% | 2677 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,468 psi | 68% | 2539 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 94% | 46,093 psi | 72% | 2667 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,750 psi | 83% | 2674 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,688 psi | 73% | 2730 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,932 psi | 69% | 2569 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,601 psi | 73% | 2625 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,243 psi | 54% | 2441 fps | 97.1% |
| Alliant Reloder-17 | 56.3 gr | 80% | 38,276 psi | 60% | 2562 fps | 99.4% |
| Alliant Reloder-19 | <<locked>> | 94% | 45,397 psi | 71% | 2657 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 45,353 psi | 71% | 2707 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,398 psi | 43% | 2280 fps | 95.7% |
| Alliant Reloder-25 | <<locked>> | 94% | 34,098 psi | 53% | 2474 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 86% | 32,648 psi | 51% | 2487 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,096 psi | 79% | 2687 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 44,164 psi | 69% | 2579 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 45,353 psi | 71% | 2707 fps | 95.6% |
| Bofors RP7 | <<locked>> | 82% | 41,785 psi | 65% | 2500 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,128 psi | 85% | 2651 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,460 psi | 82% | 2707 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,469 psi | 70% | 2582 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 82% | 38,928 psi | 61% | 2530 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 84% | 44,483 psi | 70% | 2592 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 51,430 psi | 81% | 2687 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,068 psi | 50% | 2352 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,616 psi | 75% | 2667 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 40,538 psi | 64% | 2589 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,369 psi | 43% | 1499 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,168 psi | 77% | 2638 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 51,663 psi | 81% | 2667 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,701 psi | 72% | 2569 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,906 psi | 75% | 2592 fps | 97.6% |
| IMR 4350 | <<locked>> | 86% | 41,829 psi | 66% | 2530 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,364 psi | 63% | 2474 fps | 95.7% |
| IMR 4831 | <<locked>> | 80% | 33,852 psi | 53% | 2398 fps | 96.9% |
| IMR 4895 | <<locked>> | 80% | 47,776 psi | 75% | 2654 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 98% | 51,953 psi | 81% | 2707 fps | 95% |
| IMR 8208 XBR | <<locked>> | 80% | 52,750 psi | 83% | 2674 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,271 psi | 80% | 2657 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,169 psi | 79% | 2605 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,180 psi | 72% | 2575 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,508 psi | 60% | 2441 fps | 96.7% |
| Lovex S070 | <<locked>> | 82% | 38,986 psi | 61% | 2470 fps | 95.7% |
| Lovex S071 | <<locked>> | 94% | 34,635 psi | 54% | 2421 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 50,430 psi | 79% | 2631 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,575 psi | 79% | 2628 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,079 psi | 72% | 2615 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 46,717 psi | 73% | 2661 fps | 95.5% |
| Norma MRP | <<locked>> | 92% | 39,624 psi | 62% | 2621 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 34,838 psi | 55% | 2438 fps | 97% |
| Ramshot Big Game | <<locked>> | 80% | 45,629 psi | 72% | 2631 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 35,940 psi | 56% | 2470 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 52,605 psi | 82% | 2694 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,591 psi | 82% | 2710 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,789 psi | 44% | 1535 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,454 psi | 70% | 2562 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,632 psi | 78% | 2733 fps | 99.9% |
| ReloadSwiss RS 60 | 56.3 gr | 80% | 40,495 psi | 63% | 2618 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,374 psi | 54% | 2454 fps | 96.6% |
| ReloadSwiss RS 70 | 57.1 gr | 80% | 33,808 psi | 53% | 2451 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 48,124 psi | 75% | 2585 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,872 psi | 66% | 2533 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 96% | 50,691 psi | 79% | 2694 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 94% | 44,498 psi | 70% | 2648 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 82% | 41,785 psi | 65% | 2500 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,508 psi | 60% | 2441 fps | 96.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,271 psi | 80% | 2657 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,180 psi | 72% | 2575 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,986 psi | 61% | 2470 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,090 psi | 66% | 2572 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,663 psi | 81% | 2674 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,284 psi | 77% | 2651 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,879 psi | 80% | 2562 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,975 psi | 67% | 2441 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 37,695 psi | 59% | 2385 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 44,092 psi | 69% | 2641 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 50,879 psi | 80% | 2569 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,082 psi | 80% | 2664 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,235 psi | 66% | 2530 fps | 99.7% |
| Somchem S365 | <<locked>> | 80% | 31,676 psi | 50% | 2402 fps | 99% |
| Somchem S385 | <<locked>> | 90% | 40,132 psi | 63% | 2530 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 51,227 psi | 80% | 2549 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,790 psi | 75% | 2552 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,979 psi | 75% | 2566 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,190 psi | 63% | 2464 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 35,969 psi | 56% | 2428 fps | 97.2% |
| Vihtavuori N165 | <<locked>> | 96% | 41,785 psi | 65% | 2552 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 53,142 psi | 83% | 2671 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,340 psi | 73% | 2562 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,723 psi | 56% | 2438 fps | 97% |
| Vihtavuori N555 | <<locked>> | 80% | 27,934 psi | 44% | 2303 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,360 psi | 55% | 2405 fps | 98.9% |
| Winchester 748 | <<locked>> | 80% | 53,490 psi | 84% | 2720 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 39,044 psi | 61% | 2530 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 84% | 25,962 psi | 41% | 2303 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,197 psi | 77% | 2657 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 44,657 psi | 70% | 2608 fps | 95% |
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 102 powders for 8 x 68 S loaded with the .323 | 200gr | Impala RNFP KO. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,897 fps; across all powders the maximum-charge window runs from 1,677 fps to 2,897 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 200.0 gr projectile in 0.323" calls for a 1:13.0 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 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for 8 x 68 S with the .323 | 200gr | Impala RNFP KO 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.