Load Specifications
Bullet Manufacturer:North Fork
Bullet Weight:180 gr
Bullet Diameter:0.323"
Bullet Length:<<locked>>
Caliber:8 x 57 PCC load data
Case Length (l3):2.244"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:90 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:23.62"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:13.5
Load data in caliber 8 x 57 PCC with .323 | 180gr | North Fork Semi Spitz bullet and 101 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Alliant Reloder-16.
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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 57,421 psi | 90% | 2825 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,927 psi | 89% | 2854 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,172 psi | 86% | 2861 fps | 97.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,877 psi | 75% | 2828 fps | 98% |
| Accurate 4064 | <<locked>> | 88% | 57,058 psi | 89% | 2904 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 57,609 psi | 90% | 3005 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 56,521 psi | 89% | 2936 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 57,725 psi | 90% | 2940 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 55,274 psi | 87% | 2986 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,376 psi | 87% | 2884 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 57,029 psi | 89% | 2858 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,971 psi | 89% | 3068 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 54,723 psi | 86% | 2910 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,201 psi | 87% | 2933 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 54,679 psi | 86% | 3009 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,014 psi | 88% | 3041 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 54,259 psi | 85% | 2972 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,991 psi | 71% | 2851 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,595 psi | 62% | 2753 fps | 96.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,198 psi | 80% | 3038 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,550 psi | 89% | 2953 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 55,448 psi | 87% | 2927 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 55,259 psi | 87% | 2904 fps | 97.9% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,884 psi | 89% | 2864 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,143 psi | 86% | 2913 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,202 psi | 88% | 2943 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 94% | 56,420 psi | 88% | 3002 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 92% | 56,405 psi | 88% | 2959 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 84% | 57,188 psi | 90% | 2946 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 54,824 psi | 86% | 2933 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 57,290 psi | 90% | 2982 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,739 psi | 89% | 3038 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,984 psi | 56% | 1808 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,752 psi | 86% | 2894 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,143 psi | 85% | 2877 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 57,145 psi | 90% | 2923 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 56,710 psi | 89% | 2904 fps | 98.6% |
| IMR 4350 | <<locked>> | 96% | 55,709 psi | 87% | 2930 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,869 psi | 89% | 2930 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 54,462 psi | 85% | 2943 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 56,594 psi | 89% | 2963 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,376 psi | 87% | 2884 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,942 psi | 89% | 2913 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,695 psi | 87% | 2861 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 57,348 psi | 90% | 2917 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,594 psi | 89% | 2927 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 54,331 psi | 85% | 2910 fps | 98.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,668 psi | 62% | 2671 fps | 96% |
| Norma 201 | <<locked>> | 84% | 55,274 psi | 87% | 2881 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,043 psi | 88% | 2877 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,433 psi | 85% | 2920 fps | 100% |
| Norma 204 | <<locked>> | 96% | 56,521 psi | 89% | 2982 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 50,575 psi | 79% | 2989 fps | 97.7% |
| Norma URP | <<locked>> | 96% | 56,202 psi | 88% | 2989 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 55,129 psi | 86% | 2946 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 55,013 psi | 86% | 2986 fps | 99.1% |
| Ramshot TAC | <<locked>> | 82% | 55,492 psi | 87% | 2904 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,477 psi | 87% | 2920 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 57% | 1850 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,188 psi | 88% | 2923 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,811 psi | 87% | 3002 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,608 psi | 87% | 3035 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 57,348 psi | 90% | 3028 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,275 psi | 88% | 3058 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 56,289 psi | 88% | 2861 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,956 psi | 88% | 2881 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,550 psi | 87% | 2923 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 57,014 psi | 89% | 2953 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 53,258 psi | 83% | 2953 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 92% | 55,259 psi | 87% | 2904 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,594 psi | 89% | 2927 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,942 psi | 89% | 2913 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 57,348 psi | 90% | 2917 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,331 psi | 85% | 2910 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 57,217 psi | 90% | 2982 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,288 psi | 85% | 2887 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,013 psi | 86% | 2907 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,333 psi | 88% | 2812 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,130 psi | 90% | 2815 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,840 psi | 89% | 2881 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 52,750 psi | 83% | 2946 fps | 96.7% |
| Somchem S335 | <<locked>> | 84% | 55,927 psi | 88% | 2808 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,566 psi | 90% | 2927 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 55,492 psi | 87% | 2917 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,056 psi | 86% | 2995 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,998 psi | 85% | 2933 fps | 97.8% |
| Vihtavuori N133 | <<locked>> | 84% | 56,739 psi | 89% | 2795 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,072 psi | 88% | 2841 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,652 psi | 89% | 2858 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 57,014 psi | 89% | 2894 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,056 psi | 86% | 2933 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 55,883 psi | 88% | 2881 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 54,737 psi | 86% | 2854 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 57,696 psi | 90% | 2989 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,314 psi | 79% | 2933 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 54,969 psi | 86% | 2907 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,202 psi | 88% | 2930 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 56,652 psi | 89% | 3005 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,553 psi | 64% | 2884 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,056 psi | 86% | 2913 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 50,589 psi | 79% | 2864 fps | 95.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 53,940 psi | 85% | 2779 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,847 psi | 73% | 2707 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,281 psi | 71% | 2690 fps | 95.5% |
| Accurate 3100 | <<locked>> | 94% | 38,972 psi | 61% | 2657 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 44,324 psi | 69% | 2710 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,228 psi | 52% | 2543 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 49,995 psi | 78% | 2831 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 42,453 psi | 67% | 2677 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 96% | 48,428 psi | 76% | 2864 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,054 psi | 82% | 2831 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,388 psi | 84% | 2808 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,151 psi | 72% | 2881 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,598 psi | 67% | 2700 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,556 psi | 71% | 2769 fps | 99.3% |
| Alliant Reloder-16 | 59.7 gr | 80% | 33,069 psi | 52% | 2552 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,072 psi | 58% | 2680 fps | 98.7% |
| Alliant Reloder-19 | <<locked>> | 96% | 47,674 psi | 75% | 2851 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 86% | 28,950 psi | 45% | 2461 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 98% | 37,246 psi | 58% | 2694 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 90% | 35,752 psi | 56% | 2703 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,429 psi | 77% | 2838 fps | 99.5% |
| Bofors RP3 | <<locked>> | 80% | 42,482 psi | 67% | 2707 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 42,902 psi | 67% | 2680 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,330 psi | 84% | 2812 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,619 psi | 81% | 2861 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,134 psi | 68% | 2713 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 40,379 psi | 63% | 2707 fps | 95.1% |
| Hodgdon H4350 | <<locked>> | 86% | 46,673 psi | 73% | 2789 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 50,502 psi | 79% | 2841 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,516 psi | 48% | 2451 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,804 psi | 73% | 2815 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 42,511 psi | 67% | 2776 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,789 psi | 42% | 1614 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,341 psi | 76% | 2789 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 50,705 psi | 79% | 2825 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,628 psi | 70% | 2713 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,021 psi | 74% | 2736 fps | 96.8% |
| IMR 4350 | <<locked>> | 88% | 43,366 psi | 68% | 2710 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 41,916 psi | 66% | 2661 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 32,184 psi | 50% | 2497 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 46,717 psi | 73% | 2799 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 52,054 psi | 82% | 2831 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,719 psi | 78% | 2805 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,298 psi | 77% | 2759 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,715 psi | 70% | 2713 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 36,767 psi | 58% | 2549 fps | 95.3% |
| Lovex S070 | <<locked>> | 84% | 39,697 psi | 62% | 2635 fps | 95% |
| Lovex S071 | <<locked>> | 98% | 37,260 psi | 58% | 2618 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 48,791 psi | 76% | 2776 fps | 100% |
| Norma 202 | <<locked>> | 80% | 49,414 psi | 77% | 2779 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,962 psi | 70% | 2756 fps | 99.5% |
| Norma 204 | <<locked>> | 92% | 49,458 psi | 78% | 2864 fps | 95.5% |
| Norma MRP | <<locked>> | 94% | 41,147 psi | 64% | 2795 fps | 95% |
| Norma URP | <<locked>> | 80% | 33,315 psi | 52% | 2539 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 44,918 psi | 70% | 2776 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 39,494 psi | 62% | 2694 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 52,040 psi | 82% | 2848 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,967 psi | 81% | 2867 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,209 psi | 43% | 1654 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,250 psi | 68% | 2694 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,805 psi | 76% | 2884 fps | 99.6% |
| ReloadSwiss RS 60 | 64.3 gr | 80% | 39,421 psi | 62% | 2749 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,866 psi | 52% | 2552 fps | 95% |
| ReloadSwiss RS 70 | 68.5 gr | 84% | 37,188 psi | 58% | 2677 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 52,939 psi | 83% | 2808 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,615 psi | 73% | 2730 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,030 psi | 63% | 2651 fps | 99.2% |
| Rottweil R 904 | <<locked>> | 98% | 53,505 psi | 84% | 2900 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 96% | 46,673 psi | 73% | 2838 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 84% | 42,902 psi | 67% | 2680 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,767 psi | 58% | 2549 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,719 psi | 78% | 2805 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,715 psi | 70% | 2713 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 39,697 psi | 62% | 2635 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,104 psi | 64% | 2703 fps | 98.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,604 psi | 79% | 2825 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,457 psi | 76% | 2799 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,777 psi | 78% | 2717 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,814 psi | 66% | 2582 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,104 psi | 64% | 2605 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 46,224 psi | 72% | 2831 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 49,516 psi | 78% | 2717 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,270 psi | 79% | 2815 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 40,538 psi | 64% | 2651 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 29,892 psi | 47% | 2490 fps | 97.7% |
| Somchem S385 | <<locked>> | 94% | 44,396 psi | 70% | 2762 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 50,256 psi | 79% | 2703 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,383 psi | 73% | 2700 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,775 psi | 73% | 2713 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,711 psi | 61% | 2585 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 34,737 psi | 54% | 2543 fps | 96% |
| Vihtavuori N530 | <<locked>> | 80% | 52,228 psi | 82% | 2828 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,179 psi | 71% | 2703 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,214 psi | 54% | 2543 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 86% | 31,633 psi | 50% | 2539 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,142 psi | 54% | 2516 fps | 98% |
| Winchester 748 | <<locked>> | 80% | 52,547 psi | 82% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 40,582 psi | 64% | 2710 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 29,167 psi | 46% | 2549 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,182 psi | 76% | 2805 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 47,326 psi | 74% | 2805 fps | 95.1% |
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 101 powders for 8 x 57 PCC loaded with the .323 | 180gr | North Fork Semi Spitz. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,068 fps; across all powders the maximum-charge window runs from 1,808 fps to 3,068 fps. Accurate 3100 gives the best case fill at 100 %, and 101 of the 101 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 180.0 gr projectile in 0.323" calls for a 1:13.5 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 60, ReloadSwiss RS 70, Alliant Reloder-16 rank at the top here: for 8 x 57 PCC 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.