Load Specifications
Bullet Manufacturer:North Fork
Bullet Weight:180 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:1:13.5
Load data in caliber 8 x 68 S with .323 | 180gr | North Fork Semi Spitz bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, Hodgdon Superformance and Alliant Reloder-17.
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% | 55,463 psi | 87% | 2795 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 57,537 psi | 90% | 2874 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 54,317 psi | 85% | 2825 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,360 psi | 85% | 2877 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,360 psi | 85% | 2877 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,520 psi | 85% | 2828 fps | 97.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,191 psi | 65% | 2713 fps | 96.1% |
| Accurate 4064 | <<locked>> | 90% | 54,186 psi | 85% | 2871 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 57,740 psi | 90% | 3012 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 86% | 54,592 psi | 86% | 2904 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 55,651 psi | 87% | 2904 fps | 99.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 57,014 psi | 89% | 2904 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 54,578 psi | 86% | 2828 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 54,099 psi | 85% | 3022 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,651 psi | 87% | 2923 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,347 psi | 88% | 2949 fps | 100% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,042 psi | 86% | 3012 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 56,565 psi | 89% | 3051 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,450 psi | 62% | 2746 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,179 psi | 69% | 2910 fps | 98.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 54,331 psi | 85% | 2917 fps | 99.7% |
| Bofors RP3 | <<locked>> | 92% | 56,275 psi | 88% | 2940 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 56,434 psi | 88% | 2913 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 84% | 55,419 psi | 87% | 2835 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 56,637 psi | 89% | 2936 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 54,694 psi | 86% | 2979 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 84% | 56,942 psi | 89% | 2884 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 57,290 psi | 90% | 2956 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 94% | 54,723 psi | 86% | 2976 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 98% | 55,448 psi | 87% | 2936 fps | 97% |
| Hodgdon H4895 | <<locked>> | 86% | 55,129 psi | 86% | 2913 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,445 psi | 81% | 2884 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,650 psi | 86% | 2949 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 53,911 psi | 84% | 2989 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,607 psi | 56% | 1775 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,172 psi | 86% | 2897 fps | 100% |
| IMR 3031 | <<locked>> | 90% | 57,029 psi | 89% | 2920 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 57,595 psi | 90% | 2920 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 94% | 57,130 psi | 90% | 2897 fps | 98.3% |
| IMR 4350ᴾ | <<locked>> | 100% | 56,695 psi | 89% | 2936 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,737 psi | 86% | 2890 fps | 97.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,385 psi | 76% | 2851 fps | 99.2% |
| IMR 4895 | <<locked>> | 88% | 54,186 psi | 85% | 2927 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 57,014 psi | 89% | 2904 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 57,522 psi | 90% | 2890 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 54,360 psi | 85% | 2877 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 57,421 psi | 90% | 2877 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 55,013 psi | 86% | 2884 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 57,624 psi | 90% | 2936 fps | 99.3% |
| Lovex S070 | <<locked>> | 98% | 55,013 psi | 86% | 2917 fps | 98.2% |
| Norma 201 | <<locked>> | 88% | 56,855 psi | 89% | 2897 fps | 100% |
| Norma 202 | <<locked>> | 88% | 57,377 psi | 90% | 2897 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,521 psi | 87% | 2936 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 57,508 psi | 90% | 2989 fps | 96.8% |
| Norma URPᴾ | <<locked>> | 100% | 56,608 psi | 89% | 2999 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 90% | 56,101 psi | 88% | 2963 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 55,434 psi | 87% | 2995 fps | 98.9% |
| Ramshot TAC | <<locked>> | 86% | 57,377 psi | 90% | 2927 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 57,203 psi | 90% | 2946 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 54,476 psi | 85% | 2854 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,998 psi | 56% | 1814 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 56,550 psi | 89% | 2884 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 57,682 psi | 90% | 2940 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 56,971 psi | 89% | 3018 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 56,347 psi | 88% | 3051 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 57,421 psi | 90% | 3031 fps | 99.8% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 57,058 psi | 89% | 3064 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 84% | 54,273 psi | 85% | 2828 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 57,188 psi | 90% | 2894 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 56,144 psi | 88% | 2933 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 56,434 psi | 88% | 2913 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 98% | 57,624 psi | 90% | 2936 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 86% | 54,360 psi | 85% | 2877 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,013 psi | 86% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,013 psi | 86% | 2917 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 54,331 psi | 85% | 2943 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 55,898 psi | 88% | 2904 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 56,623 psi | 89% | 2927 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 54,868 psi | 86% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 55,071 psi | 86% | 2782 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 54,389 psi | 85% | 2835 fps | 97.9% |
| Somchem S321 | <<locked>> | 82% | 54,650 psi | 86% | 2884 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 57,711 psi | 90% | 2828 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,434 psi | 87% | 2894 fps | 100% |
| Somchem S355 | <<locked>> | 94% | 56,405 psi | 88% | 2930 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,010 psi | 80% | 2946 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 47,442 psi | 74% | 2822 fps | 96% |
| Unknown powder | <<locked>> | 96% | 54,143 psi | 85% | 2953 fps | 99.3% |
| Vihtavuori N130 | <<locked>> | 82% | 54,592 psi | 86% | 2746 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,114 psi | 86% | 2769 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 57,029 psi | 89% | 2854 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 54,346 psi | 85% | 2825 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 54,375 psi | 85% | 2858 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 55,680 psi | 87% | 2940 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 84% | 54,143 psi | 85% | 2854 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 56,072 psi | 88% | 2871 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 54,534 psi | 85% | 2943 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,308 psi | 68% | 2825 fps | 98.9% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 55,970 psi | 88% | 2917 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 54,404 psi | 85% | 2907 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 54,723 psi | 86% | 2976 fps | 98.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,389 psi | 55% | 2749 fps | 98.9% |
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% | 49,052 psi | 77% | 2707 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 53,722 psi | 84% | 2822 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 41,843 psi | 66% | 2635 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,398 psi | 74% | 2772 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,398 psi | 74% | 2772 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 47,776 psi | 75% | 2717 fps | 95.7% |
| Accurate 3100 | <<locked>> | 98% | 38,580 psi | 60% | 2661 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 39,523 psi | 62% | 2628 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 33,170 psi | 52% | 2556 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 45,252 psi | 71% | 2746 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 38,493 psi | 60% | 2592 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,282 psi | 74% | 2749 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 47,718 psi | 75% | 2733 fps | 100% |
| Alliant Power Pro 2000-MR | 58.6 gr | 80% | 41,191 psi | 65% | 2779 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,145 psi | 60% | 2615 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,973 psi | 64% | 2680 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 33,533 psi | 53% | 2569 fps | 95.5% |
| Alliant Reloder-17 | 57.7 gr | 80% | 32,938 psi | 52% | 2582 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,037 psi | 46% | 2470 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 94% | 35,839 psi | 56% | 2717 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,527 psi | 70% | 2749 fps | 98.6% |
| Bofors RP3 | <<locked>> | 80% | 37,840 psi | 59% | 2621 fps | 98.9% |
| Bofors RP7 | <<locked>> | 88% | 44,034 psi | 69% | 2697 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,892 psi | 77% | 2736 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,267 psi | 73% | 2776 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,966 psi | 80% | 2920 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 80% | 50,299 psi | 79% | 2789 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,638 psi | 61% | 2625 fps | 96.6% |
| Hodgdon H414 | <<locked>> | 86% | 41,655 psi | 65% | 2740 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 94% | 48,965 psi | 77% | 2828 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 45,687 psi | 72% | 2756 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 28,877 psi | 45% | 2411 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,262 psi | 62% | 2677 fps | 99.2% |
| Hodgdon Superformance | 68.6 gr | 90% | 43,468 psi | 68% | 2795 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,397 psi | 41% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,582 psi | 64% | 2644 fps | 99% |
| IMR 3031 | <<locked>> | 80% | 41,640 psi | 65% | 2680 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,637 psi | 59% | 2569 fps | 97.6% |
| IMR 4166 Enduron | <<locked>> | 84% | 42,438 psi | 67% | 2638 fps | 95.2% |
| IMR 4350 | <<locked>> | 92% | 44,092 psi | 69% | 2723 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 42,917 psi | 67% | 2677 fps | 95.2% |
| IMR 4831 | <<locked>> | 88% | 33,112 psi | 52% | 2536 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 41,959 psi | 66% | 2713 fps | 99% |
| IMR 8208 XBR | <<locked>> | 80% | 47,282 psi | 74% | 2749 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 80% | 53,650 psi | 84% | 2835 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 44,527 psi | 70% | 2726 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,179 psi | 71% | 2677 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 40,321 psi | 63% | 2631 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 37,565 psi | 59% | 2572 fps | 95.3% |
| Lovex S070 | <<locked>> | 90% | 42,946 psi | 67% | 2703 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 44,324 psi | 69% | 2697 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 44,614 psi | 70% | 2703 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,335 psi | 63% | 2667 fps | 98.7% |
| Norma 204 | <<locked>> | 96% | 50,096 psi | 79% | 2871 fps | 95.1% |
| Norma URP | <<locked>> | 84% | 33,591 psi | 53% | 2559 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 39,929 psi | 63% | 2684 fps | 98.5% |
| Ramshot Hunter | <<locked>> | 90% | 39,987 psi | 63% | 2710 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 47,253 psi | 74% | 2759 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,862 psi | 73% | 2782 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,010 psi | 80% | 2799 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,832 psi | 42% | 1621 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,040 psi | 83% | 2831 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 41,611 psi | 65% | 2661 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,192 psi | 68% | 2785 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,070 psi | 55% | 2651 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 35,302 psi | 55% | 2628 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 37,855 psi | 59% | 2694 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 48,196 psi | 76% | 2733 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,163 psi | 66% | 2648 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 35,592 psi | 56% | 2562 fps | 98.2% |
| Rottweil R 907 | <<locked>> | 88% | 44,034 psi | 69% | 2697 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 84% | 37,565 psi | 59% | 2572 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,527 psi | 70% | 2726 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,321 psi | 63% | 2631 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 42,946 psi | 67% | 2703 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,521 psi | 57% | 2612 fps | 97.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,556 psi | 71% | 2733 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,743 psi | 69% | 2713 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,614 psi | 71% | 2644 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,985 psi | 60% | 2513 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 41,930 psi | 66% | 2621 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 51,271 psi | 80% | 2831 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,281 psi | 71% | 2648 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,339 psi | 71% | 2730 fps | 99.3% |
| Somchem S355 | <<locked>> | 80% | 36,419 psi | 57% | 2569 fps | 98.2% |
| Somchem S365 | <<locked>> | 80% | 26,469 psi | 41% | 2398 fps | 95.8% |
| Somchem S385 | <<locked>> | 98% | 44,411 psi | 70% | 2766 fps | 95.2% |
| Unknown powder | <<locked>> | 84% | 36,477 psi | 57% | 2618 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 51,401 psi | 81% | 2703 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,934 psi | 72% | 2638 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,684 psi | 65% | 2628 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,279 psi | 66% | 2638 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,621 psi | 54% | 2507 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 82% | 32,924 psi | 52% | 2507 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 47,413 psi | 74% | 2746 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 40,727 psi | 64% | 2628 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 34,563 psi | 54% | 2562 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 90% | 31,082 psi | 49% | 2546 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,734 psi | 48% | 2428 fps | 96.4% |
| Winchester 748 | <<locked>> | 80% | 50,937 psi | 80% | 2854 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 41,655 psi | 65% | 2740 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 94% | 29,153 psi | 46% | 2549 fps | 95.7% |
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 | 180gr | North Fork Semi Spitz. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,064 fps; across all powders the maximum-charge window runs from 1,775 fps to 3,064 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 55–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.323" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, Alliant Reloder-16 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 Power Pro 2000-MR, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for 8 x 68 S with the .323 | 180gr | North Fork Semi Spitz 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.