Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:165 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:1:11.5
Load data in caliber 8 x 68 S with .323 | 165gr | 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 ReloadSwiss RS 52.
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>> | 88% | 56,724 psi | 89% | 2940 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 55,085 psi | 86% | 2966 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 54,215 psi | 85% | 2953 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 57,246 psi | 90% | 3031 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 54,824 psi | 86% | 2946 fps | 96% |
| Accurate 4064 | <<locked>> | 96% | 57,653 psi | 90% | 3045 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,125 psi | 79% | 3012 fps | 98.6% |
| Accurate LT-30 | <<locked>> | 82% | 56,028 psi | 88% | 2884 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,463 psi | 88% | 2910 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,854 psi | 88% | 3041 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 96% | 56,782 psi | 89% | 3035 fps | 99.6% |
| ADI AR 2219 | <<locked>> | 82% | 57,159 psi | 90% | 3012 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,897 psi | 86% | 2989 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 55,245 psi | 87% | 2969 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 56,855 psi | 89% | 3107 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,608 psi | 87% | 3159 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 56,478 psi | 89% | 3054 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 84% | 56,202 psi | 88% | 2943 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 57,261 psi | 90% | 3081 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,284 psi | 77% | 3022 fps | 98.8% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 57,450 psi | 90% | 3182 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,650 psi | 54% | 2726 fps | 96.4% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,216 psi | 87% | 2874 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,840 psi | 88% | 3054 fps | 99.4% |
| Bofors RP3 | <<locked>> | 96% | 56,869 psi | 89% | 3071 fps | 100% |
| Bofors RP7ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 3035 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,898 psi | 89% | 2976 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 54,027 psi | 85% | 3018 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 86% | 56,086 psi | 88% | 3123 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 84% | 55,767 psi | 87% | 2992 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,884 psi | 89% | 3015 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,766 psi | 86% | 3031 fps | 98.8% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 53,809 psi | 84% | 3071 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 90% | 56,391 psi | 88% | 3051 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,194 psi | 71% | 2894 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,521 psi | 87% | 3081 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 55,405 psi | 87% | 3110 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,751 psi | 54% | 1831 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 54,360 psi | 85% | 3002 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 56,115 psi | 88% | 3038 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 56,289 psi | 88% | 3018 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 92% | 57,014 psi | 89% | 2999 fps | 97.3% |
| IMR 4198 | <<locked>> | 84% | 56,637 psi | 89% | 2904 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 56,188 psi | 88% | 3015 fps | 97.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,747 psi | 75% | 2953 fps | 98.3% |
| IMR 4895 | <<locked>> | 92% | 54,911 psi | 86% | 3058 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 88% | 54,897 psi | 86% | 2989 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 55,071 psi | 86% | 2976 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 55,042 psi | 86% | 3012 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,651 psi | 87% | 2963 fps | 99.8% |
| Lovex S062 | <<locked>> | 94% | 55,854 psi | 88% | 3015 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,984 psi | 86% | 3005 fps | 98.2% |
| Lovex S070ᴾ | <<locked>> | 100% | 52,257 psi | 82% | 2982 fps | 96.7% |
| Norma 201 | <<locked>> | 90% | 54,433 psi | 85% | 2982 fps | 100% |
| Norma 202 | <<locked>> | 90% | 54,940 psi | 86% | 2986 fps | 100% |
| Norma 203B | <<locked>> | 94% | 56,376 psi | 88% | 3068 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 49,850 psi | 78% | 3005 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 94% | 57,130 psi | 90% | 3094 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,950 psi | 77% | 2995 fps | 96.8% |
| Ramshot TAC | <<locked>> | 88% | 55,608 psi | 87% | 3009 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,868 psi | 86% | 3028 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,260 psi | 88% | 2995 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,201 psi | 55% | 1877 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 54,723 psi | 86% | 2979 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 55,187 psi | 86% | 3009 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 53,925 psi | 85% | 3094 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 57,290 psi | 90% | 3186 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,096 psi | 79% | 3035 fps | 98.4% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,662 psi | 79% | 3061 fps | 98.1% |
| Rottweil R 901 | <<locked>> | 88% | 55,172 psi | 86% | 2966 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 54,723 psi | 86% | 2976 fps | 100% |
| Rottweil R 903 | <<locked>> | 98% | 56,710 psi | 89% | 3058 fps | 100% |
| Rottweil R 907ᴾ | <<locked>> | 100% | 57,551 psi | 90% | 3035 fps | 96.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,984 psi | 86% | 3005 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 90% | 55,042 psi | 86% | 3012 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,854 psi | 88% | 3015 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 52,257 psi | 82% | 2982 fps | 96.7% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 54,302 psi | 85% | 2943 fps | 99.9% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 57,493 psi | 90% | 3022 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 55,303 psi | 87% | 3074 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 57,595 psi | 90% | 2969 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 57,479 psi | 90% | 3038 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 54,389 psi | 85% | 3012 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,492 psi | 89% | 2927 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 56,318 psi | 88% | 2917 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 55,782 psi | 87% | 2956 fps | 97% |
| Somchem S321 | <<locked>> | 86% | 56,347 psi | 88% | 3028 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 55,535 psi | 87% | 2920 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 57,000 psi | 89% | 3028 fps | 99.8% |
| Somchem S355 | <<locked>> | 98% | 57,217 psi | 90% | 3058 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,425 psi | 70% | 2949 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 86% | 56,057 psi | 88% | 2887 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 56,536 psi | 89% | 2910 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 57,653 psi | 90% | 2989 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,637 psi | 87% | 2963 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,347 psi | 87% | 2986 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,489 psi | 82% | 3002 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 88% | 55,666 psi | 87% | 2992 fps | 100% |
| Vihtavuori N540 | <<locked>> | 94% | 57,392 psi | 90% | 3012 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,532 psi | 81% | 3009 fps | 98.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,970 psi | 58% | 2802 fps | 96.3% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,679 psi | 84% | 2992 fps | 99.9% |
| Winchester 748 | <<locked>> | 88% | 55,158 psi | 86% | 3038 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 54,056 psi | 85% | 3074 fps | 97% |
| Winchester StaBALL Match | <<locked>> | 90% | 54,085 psi | 85% | 3015 fps | 99.9% |
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% | 43,932 psi | 69% | 2746 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,095 psi | 75% | 2858 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 36,100 psi | 57% | 2648 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 43,192 psi | 68% | 2808 fps | 99.9% |
| Accurate 2700 | <<locked>> | 90% | 51,300 psi | 80% | 2887 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 34,171 psi | 54% | 2631 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 37,565 psi | 59% | 2766 fps | 95.7% |
| Accurate LT-30 | <<locked>> | 80% | 52,692 psi | 83% | 2835 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 53,084 psi | 83% | 2861 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 40,567 psi | 64% | 2762 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 80% | 34,476 psi | 54% | 2602 fps | 95.1% |
| ADI AR 2219 | <<locked>> | 80% | 53,359 psi | 84% | 2956 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,685 psi | 67% | 2779 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 80% | 42,105 psi | 66% | 2772 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 49,734 psi | 78% | 2992 fps | 99.6% |
| Alliant Power Pro 2000-MR | 57.5 gr | 80% | 36,622 psi | 57% | 2769 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,634 psi | 53% | 2618 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,748 psi | 78% | 2848 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,347 psi | 57% | 2684 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 90% | 35,955 psi | 56% | 2726 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 84% | 33,185 psi | 52% | 2687 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,576 psi | 51% | 2667 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,909 psi | 81% | 2828 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,668 psi | 62% | 2759 fps | 96.5% |
| Bofors RP3 | <<locked>> | 80% | 32,793 psi | 51% | 2612 fps | 96.6% |
| Bofors RP7 | <<locked>> | 96% | 50,502 psi | 79% | 2920 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,454 psi | 70% | 2769 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,002 psi | 64% | 2789 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,136 psi | 71% | 2936 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 80% | 48,791 psi | 76% | 2884 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,559 psi | 78% | 2907 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 39,044 psi | 61% | 2736 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 96% | 46,905 psi | 74% | 2949 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 40,901 psi | 64% | 2772 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,692 psi | 51% | 2615 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,811 psi | 58% | 2733 fps | 97.8% |
| Hodgdon Superformance | <<locked>> | 98% | 51,430 psi | 81% | 3045 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,831 psi | 40% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,363 psi | 62% | 2726 fps | 97.9% |
| IMR 3031 | <<locked>> | 80% | 39,972 psi | 63% | 2776 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,143 psi | 57% | 2638 fps | 96.1% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,050 psi | 74% | 2828 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 50,314 psi | 79% | 2815 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 49,530 psi | 78% | 2904 fps | 95.7% |
| IMR 4831 | <<locked>> | 92% | 36,405 psi | 57% | 2720 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 37,188 psi | 58% | 2717 fps | 97% |
| IMR 8208 XBR | <<locked>> | 80% | 42,685 psi | 67% | 2779 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 47,877 psi | 75% | 2864 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 39,044 psi | 61% | 2736 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 41,017 psi | 64% | 2703 fps | 97.9% |
| Lovex S062 | <<locked>> | 80% | 35,766 psi | 56% | 2641 fps | 97.8% |
| Lovex S065 | <<locked>> | 92% | 42,743 psi | 67% | 2785 fps | 95.6% |
| Lovex S070 | <<locked>> | 96% | 45,905 psi | 72% | 2867 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 39,523 psi | 62% | 2713 fps | 98.7% |
| Norma 202 | <<locked>> | 80% | 39,842 psi | 62% | 2730 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 35,723 psi | 56% | 2674 fps | 96.5% |
| Norma URP | <<locked>> | 92% | 38,276 psi | 60% | 2776 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 35,201 psi | 55% | 2680 fps | 96% |
| Ramshot Hunter | <<locked>> | 96% | 43,062 psi | 67% | 2877 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 42,583 psi | 67% | 2772 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,684 psi | 65% | 2792 fps | 98% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,166 psi | 72% | 2825 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,947 psi | 41% | 1677 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,834 psi | 75% | 2867 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 45,252 psi | 71% | 2835 fps | 95.4% |
| ReloadSwiss RS 52 | 55.7 gr | 80% | 37,652 psi | 59% | 2782 fps | 96.5% |
| ReloadSwiss RS 60 | 56.6 gr | 80% | 30,937 psi | 48% | 2635 fps | 97.5% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,681 psi | 59% | 2789 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,133 psi | 64% | 2864 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 43,279 psi | 68% | 2766 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,521 psi | 59% | 2661 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 30,893 psi | 48% | 2552 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 96% | 50,502 psi | 79% | 2920 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 42,743 psi | 67% | 2785 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,044 psi | 61% | 2736 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 35,766 psi | 56% | 2641 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 96% | 45,905 psi | 72% | 2867 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,734 psi | 80% | 2887 fps | 99.8% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 53,606 psi | 84% | 2966 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,403 psi | 54% | 2667 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 50,589 psi | 79% | 2871 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,524 psi | 64% | 2740 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,044 psi | 61% | 2723 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,133 psi | 64% | 2677 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,895 psi | 53% | 2533 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 48,660 psi | 76% | 2844 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 45,977 psi | 72% | 2858 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 40,727 psi | 64% | 2680 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,379 psi | 63% | 2743 fps | 97.7% |
| Somchem S355 | <<locked>> | 80% | 31,995 psi | 50% | 2566 fps | 95.7% |
| Somchem S365 | <<locked>> | 86% | 27,920 psi | 44% | 2536 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 46,673 psi | 73% | 2749 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,394 psi | 65% | 2677 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,680 psi | 57% | 2651 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,681 psi | 59% | 2661 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 30,385 psi | 48% | 2507 fps | 96.6% |
| Vihtavuori N160 | <<locked>> | 90% | 37,594 psi | 59% | 2723 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 42,467 psi | 67% | 2769 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 80% | 36,129 psi | 57% | 2644 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 90% | 36,811 psi | 58% | 2720 fps | 95% |
| Vihtavuori N555 | <<locked>> | 98% | 34,621 psi | 54% | 2743 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,183 psi | 49% | 2530 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 41,872 psi | 66% | 2815 fps | 99.5% |
| Winchester 760 | <<locked>> | 96% | 47,137 psi | 74% | 2953 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,348 psi | 60% | 2726 fps | 97.8% |
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 105 powders for 8 x 68 S loaded with the .323 | 165gr | Peregrine VLR-4. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,186 fps; across all powders the maximum-charge window runs from 1,831 fps to 3,186 fps. Accurate 4350 gives the best case fill at 100 %, and 105 of the 105 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.323" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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, ReloadSwiss RS 52 rank at the top here: for 8 x 68 S with the .323 | 165gr | Peregrine VLR-4 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.