Load Specifications
Bullet Manufacturer:Peregrine
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:1:11.0
Load data in caliber 8 x 68 S with .323 | 180gr | Peregrine VLR-4 bullet and 105 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, ReloadSwiss RS 60 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>> | 86% | 55,651 psi | 87% | 2792 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 57,696 psi | 90% | 2871 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 57,203 psi | 90% | 2858 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,970 psi | 88% | 2884 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 57,319 psi | 90% | 2867 fps | 97.3% |
| Accurate 4064 | <<locked>> | 94% | 56,811 psi | 89% | 2904 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 53,113 psi | 83% | 2936 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 88% | 54,665 psi | 86% | 2894 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 55,912 psi | 88% | 2894 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 88% | 57,290 psi | 90% | 2897 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 54,476 psi | 85% | 2822 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 55,695 psi | 87% | 2956 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 54,360 psi | 85% | 3015 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 55,564 psi | 87% | 2913 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,143 psi | 86% | 2795 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 56,289 psi | 88% | 2940 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 51,561 psi | 81% | 2943 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 98% | 56,478 psi | 89% | 3041 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,405 psi | 57% | 2667 fps | 98% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,553 psi | 64% | 2822 fps | 97% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 57,363 psi | 90% | 2776 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 54,766 psi | 86% | 2913 fps | 99.6% |
| Bofors RP3 | <<locked>> | 94% | 56,144 psi | 88% | 2933 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 56,318 psi | 88% | 2897 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 86% | 55,854 psi | 88% | 2831 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 56,637 psi | 89% | 2927 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 55,042 psi | 86% | 2976 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 82% | 54,476 psi | 85% | 2841 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 55,593 psi | 87% | 2867 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 57,217 psi | 90% | 2946 fps | 99.5% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 56,782 psi | 89% | 2995 fps | 98.2% |
| Hodgdon H4350 | <<locked>> | 98% | 57,522 psi | 90% | 2953 fps | 97% |
| Hodgdon H4895 | <<locked>> | 88% | 55,172 psi | 86% | 2904 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 47,747 psi | 75% | 2818 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 54,549 psi | 85% | 2940 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 54,099 psi | 85% | 2976 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,041 psi | 55% | 1749 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 56,840 psi | 89% | 2910 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 55,114 psi | 86% | 2887 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 55,317 psi | 87% | 2877 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,448 psi | 87% | 2858 fps | 97.8% |
| IMR 4198 | <<locked>> | 82% | 55,477 psi | 87% | 2756 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 53,127 psi | 83% | 2871 fps | 96.9% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,172 psi | 86% | 2884 fps | 97.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,430 psi | 79% | 2874 fps | 99.2% |
| IMR 4895 | <<locked>> | 92% | 57,740 psi | 90% | 2972 fps | 100% |
| IMR 8208 XBR | <<locked>> | 88% | 57,290 psi | 90% | 2897 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 57,508 psi | 90% | 2881 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 54,128 psi | 85% | 2871 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 54,679 psi | 86% | 2825 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 54,752 psi | 86% | 2871 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 57,421 psi | 90% | 2920 fps | 99.1% |
| Lovex S070ᴾ | <<locked>> | 100% | 54,708 psi | 86% | 2900 fps | 97.9% |
| Norma 201 | <<locked>> | 90% | 56,840 psi | 89% | 2890 fps | 100% |
| Norma 202 | <<locked>> | 90% | 57,508 psi | 90% | 2890 fps | 100% |
| Norma 203B | <<locked>> | 92% | 55,419 psi | 87% | 2927 fps | 100% |
| Norma URPᴾ | <<locked>> | 100% | 52,518 psi | 82% | 2927 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 92% | 56,014 psi | 88% | 2949 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 51,547 psi | 81% | 2923 fps | 98.1% |
| Ramshot TAC | <<locked>> | 86% | 54,331 psi | 85% | 2867 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 88% | 57,392 psi | 90% | 2936 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 84% | 54,781 psi | 86% | 2848 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,563 psi | 56% | 1795 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 56,971 psi | 89% | 2877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 54,099 psi | 85% | 2874 fps | 98.1% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 56,797 psi | 89% | 3009 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 56,260 psi | 88% | 3041 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 53,040 psi | 83% | 2959 fps | 99.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 53,142 psi | 83% | 2989 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 88% | 57,406 psi | 90% | 2864 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 57,217 psi | 90% | 2884 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 55,695 psi | 87% | 2917 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 56,318 psi | 88% | 2897 fps | 97.4% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 57,421 psi | 90% | 2920 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 88% | 54,128 psi | 85% | 2871 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 54,752 psi | 86% | 2871 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 54,708 psi | 86% | 2900 fps | 97.9% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 56,623 psi | 89% | 2851 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 54,230 psi | 85% | 2933 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,217 psi | 88% | 2818 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 56,231 psi | 88% | 2897 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 56,782 psi | 89% | 2920 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,288 psi | 87% | 2782 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 55,259 psi | 87% | 2776 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 54,607 psi | 86% | 2825 fps | 97.6% |
| Somchem S321 | <<locked>> | 84% | 55,013 psi | 86% | 2881 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,433 psi | 85% | 2779 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 55,898 psi | 88% | 2890 fps | 100% |
| Somchem S355 | <<locked>> | 96% | 56,057 psi | 88% | 2917 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,978 psi | 74% | 2877 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 54,998 psi | 86% | 2743 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 55,492 psi | 87% | 2766 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 56,927 psi | 89% | 2848 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,476 psi | 85% | 2822 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 54,201 psi | 85% | 2848 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 55,216 psi | 87% | 2923 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 54,288 psi | 85% | 2848 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 56,188 psi | 88% | 2864 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 54,317 psi | 85% | 2933 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,494 psi | 62% | 2746 fps | 97.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 56,231 psi | 88% | 2910 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 54,186 psi | 85% | 2897 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 56,782 psi | 89% | 2995 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,445 psi | 51% | 2648 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 90% | 56,724 psi | 89% | 2930 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% | 46,050 psi | 72% | 2654 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,256 psi | 79% | 2766 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,101 psi | 60% | 2569 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 45,339 psi | 71% | 2723 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 46,992 psi | 74% | 2700 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 36,085 psi | 57% | 2559 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 34,635 psi | 54% | 2592 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 42,438 psi | 67% | 2684 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 35,984 psi | 56% | 2530 fps | 96.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,570 psi | 70% | 2694 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 44,309 psi | 69% | 2680 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,141 psi | 82% | 2900 fps | 100% |
| Alliant Power Pro 2000-MR | 56.2 gr | 80% | 38,377 psi | 60% | 2703 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,360 psi | 55% | 2549 fps | 98.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 51,924 psi | 81% | 2749 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,159 psi | 60% | 2615 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,375 psi | 55% | 2608 fps | 95.9% |
| Alliant Reloder-17 | 55.3 gr | 80% | 30,385 psi | 48% | 2503 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,153 psi | 47% | 2500 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,753 psi | 59% | 2753 fps | 96% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 53,824 psi | 84% | 2730 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,582 psi | 65% | 2684 fps | 97.8% |
| Bofors RP3 | <<locked>> | 80% | 34,664 psi | 54% | 2546 fps | 98% |
| Bofors RP7 | <<locked>> | 92% | 46,717 psi | 73% | 2740 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,441 psi | 73% | 2684 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,033 psi | 67% | 2713 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 47,572 psi | 75% | 2854 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 80% | 50,981 psi | 80% | 2792 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 51,967 psi | 81% | 2815 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 35,766 psi | 56% | 2552 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 92% | 43,366 psi | 68% | 2766 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 94% | 50,705 psi | 79% | 2844 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 42,830 psi | 67% | 2694 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,327 psi | 48% | 2448 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,638 psi | 61% | 2661 fps | 98.9% |
| Hodgdon Superformance | <<locked>> | 94% | 46,586 psi | 73% | 2844 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,078 psi | 41% | 1565 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,133 psi | 64% | 2648 fps | 98.9% |
| IMR 3031 | <<locked>> | 80% | 42,235 psi | 66% | 2690 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,753 psi | 59% | 2562 fps | 97.4% |
| IMR 4166 Enduron | <<locked>> | 82% | 43,033 psi | 67% | 2638 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 52,243 psi | 82% | 2710 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 46,847 psi | 73% | 2762 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,629 psi | 72% | 2720 fps | 95.6% |
| IMR 4831 | <<locked>> | 88% | 33,808 psi | 53% | 2549 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 39,117 psi | 61% | 2648 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 80% | 44,570 psi | 70% | 2694 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 50,096 psi | 79% | 2776 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,191 psi | 65% | 2661 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 42,612 psi | 67% | 2621 fps | 98.8% |
| Lovex S062 | <<locked>> | 80% | 37,463 psi | 59% | 2566 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 39,566 psi | 62% | 2608 fps | 95.6% |
| Lovex S070 | <<locked>> | 92% | 42,453 psi | 67% | 2687 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 41,292 psi | 65% | 2631 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 41,684 psi | 65% | 2644 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,521 psi | 59% | 2605 fps | 97.8% |
| Norma URP | <<locked>> | 88% | 35,302 psi | 55% | 2598 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 36,999 psi | 58% | 2612 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 39,668 psi | 62% | 2697 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 44,425 psi | 70% | 2697 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,859 psi | 69% | 2717 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,066 psi | 75% | 2743 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,252 psi | 41% | 1598 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 49,980 psi | 78% | 2776 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 41,524 psi | 65% | 2651 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,871 psi | 62% | 2717 fps | 97.9% |
| ReloadSwiss RS 60 | 55.3 gr | 80% | 32,401 psi | 51% | 2575 fps | 98.9% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 34,664 psi | 54% | 2608 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 37,666 psi | 59% | 2677 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 45,063 psi | 71% | 2674 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,363 psi | 62% | 2585 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 32,648 psi | 51% | 2493 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 92% | 46,717 psi | 73% | 2740 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,566 psi | 62% | 2608 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,191 psi | 65% | 2661 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 37,463 psi | 59% | 2566 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 92% | 42,453 psi | 67% | 2687 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 52,837 psi | 83% | 2795 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,866 psi | 53% | 2546 fps | 96.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 52,895 psi | 83% | 2772 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,438 psi | 67% | 2667 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,973 psi | 64% | 2651 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,975 psi | 67% | 2592 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,563 psi | 56% | 2457 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 44,614 psi | 70% | 2661 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 48,066 psi | 75% | 2772 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 42,424 psi | 66% | 2592 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,351 psi | 66% | 2667 fps | 98.7% |
| Somchem S355 | <<locked>> | 80% | 33,620 psi | 53% | 2500 fps | 97.2% |
| Somchem S365 | <<locked>> | 82% | 25,831 psi | 40% | 2372 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 48,660 psi | 76% | 2657 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 43,308 psi | 68% | 2589 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,711 psi | 61% | 2572 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,508 psi | 62% | 2582 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,966 psi | 50% | 2441 fps | 98% |
| Vihtavuori N160 | <<locked>> | 86% | 34,650 psi | 54% | 2546 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 44,411 psi | 70% | 2687 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 37,942 psi | 59% | 2566 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 36,347 psi | 57% | 2602 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 94% | 32,242 psi | 51% | 2579 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,514 psi | 45% | 2359 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 43,932 psi | 69% | 2733 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 43,366 psi | 68% | 2766 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,313 psi | 48% | 2579 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,219 psi | 63% | 2651 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 120 powders for 8 x 68 S loaded with the .323 | 180gr | Peregrine VLR-4. Alliant Reloder-17 delivers the highest muzzle velocity at 3,041 fps; across all powders the maximum-charge window runs from 1,749 fps to 3,041 fps. Accurate 3100 gives the best case fill at 100 %, and 120 of the 120 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 48–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.323" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 8 x 68 S with the .323 | 180gr | Peregrine VLR-4 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.