
Load Specifications
Load data in caliber 8 x 57 PCC with .323 | 150gr | Speer Hot-Cor bullet and 94 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.
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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>> | 84% | 56,478 psi | 89% | 3084 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 55,521 psi | 87% | 3104 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 57,319 psi | 90% | 3176 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 54,491 psi | 85% | 3087 fps | 95.9% |
| Accurate 4064 | <<locked>> | 90% | 55,405 psi | 87% | 3150 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 55,593 psi | 87% | 3232 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 86% | 55,651 psi | 87% | 3182 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 92% | 56,623 psi | 89% | 3179 fps | 99.5% |
| ADI Benchmark 8208 | <<locked>> | 84% | 54,549 psi | 85% | 3130 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 55,506 psi | 87% | 3114 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 55,492 psi | 87% | 3307 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 56,855 psi | 89% | 3205 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 57,406 psi | 90% | 3228 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 56,478 psi | 89% | 3291 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 94% | 54,331 psi | 85% | 3274 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,683 psi | 64% | 2989 fps | 98.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,919 psi | 72% | 3166 fps | 97.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 55,695 psi | 87% | 3196 fps | 99.3% |
| Bofors RP3 | <<locked>> | 92% | 57,725 psi | 90% | 3225 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 57,595 psi | 90% | 3182 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,217 psi | 88% | 3117 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,114 psi | 85% | 3156 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 55,970 psi | 88% | 3264 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 90% | 54,969 psi | 86% | 3176 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 96% | 54,650 psi | 86% | 3222 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 86% | 56,202 psi | 88% | 3196 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,823 psi | 83% | 3156 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,970 psi | 88% | 3232 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 55,521 psi | 87% | 3258 fps | 96.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,563 psi | 56% | 1988 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 57,551 psi | 90% | 3199 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 56,289 psi | 88% | 3182 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 56,188 psi | 88% | 3166 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 88% | 56,057 psi | 88% | 3136 fps | 97.1% |
| IMR 4350 | <<locked>> | 98% | 54,505 psi | 85% | 3150 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 55,912 psi | 88% | 3159 fps | 96.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 56,101 psi | 88% | 3222 fps | 99.3% |
| IMR 4895 | <<locked>> | 88% | 55,274 psi | 87% | 3205 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 84% | 54,549 psi | 85% | 3130 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 55,608 psi | 87% | 3159 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 54,984 psi | 86% | 3107 fps | 99.7% |
| Lovex S062 | <<locked>> | 90% | 55,985 psi | 88% | 3159 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 55,550 psi | 87% | 3156 fps | 98.2% |
| Lovex S070 | <<locked>> | 98% | 56,550 psi | 89% | 3192 fps | 97.4% |
| Norma 201 | <<locked>> | 86% | 54,331 psi | 85% | 3123 fps | 100% |
| Norma 202 | <<locked>> | 86% | 54,998 psi | 86% | 3130 fps | 100% |
| Norma 203B | <<locked>> | 90% | 56,579 psi | 89% | 3215 fps | 99.8% |
| Norma URP | <<locked>> | 98% | 54,578 psi | 86% | 3219 fps | 99% |
| Ramshot Big Game | <<locked>> | 90% | 57,450 psi | 90% | 3241 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 57,203 psi | 90% | 3271 fps | 98.2% |
| Ramshot TAC | <<locked>> | 84% | 54,955 psi | 86% | 3143 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 54,563 psi | 86% | 3163 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 82% | 55,317 psi | 87% | 3127 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,998 psi | 56% | 2034 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 57,493 psi | 90% | 3169 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,187 psi | 86% | 3153 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 54,201 psi | 85% | 3238 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 53,998 psi | 85% | 3278 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 55,419 psi | 87% | 3251 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,013 psi | 86% | 3281 fps | 98.8% |
| Rottweil R 901 | <<locked>> | 84% | 55,201 psi | 87% | 3114 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 54,940 psi | 86% | 3123 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 57,566 psi | 90% | 3215 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 57,595 psi | 90% | 3182 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 55,550 psi | 87% | 3156 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 86% | 55,608 psi | 87% | 3159 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 55,985 psi | 88% | 3159 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 56,550 psi | 89% | 3192 fps | 97.4% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 55,637 psi | 87% | 3219 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 57,116 psi | 90% | 3179 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 57,696 psi | 90% | 3205 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 55,622 psi | 87% | 3068 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 56,115 psi | 88% | 3061 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 55,782 psi | 87% | 3104 fps | 97% |
| Somchem S321 | <<locked>> | 82% | 55,840 psi | 88% | 3163 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,187 psi | 86% | 3061 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 56,782 psi | 89% | 3173 fps | 99.8% |
| Somchem S355 | <<locked>> | 92% | 54,172 psi | 85% | 3153 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 52,562 psi | 82% | 3222 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 55,303 psi | 87% | 3028 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,883 psi | 88% | 3051 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 54,708 psi | 86% | 3094 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,405 psi | 87% | 3107 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 55,695 psi | 87% | 3133 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 57,029 psi | 89% | 3215 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 84% | 54,969 psi | 86% | 3130 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 57,334 psi | 90% | 3150 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,072 psi | 88% | 3219 fps | 99% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,846 psi | 70% | 3077 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 57,609 psi | 90% | 3192 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,013 psi | 86% | 3179 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 54,868 psi | 86% | 3225 fps | 97% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,564 psi | 57% | 2976 fps | 97.7% |
| Winchester StaBALL Match | <<locked>> | 88% | 57,696 psi | 90% | 3215 fps | 100% |
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% | 49,792 psi | 78% | 2979 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,627 psi | 67% | 2890 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,893 psi | 78% | 3058 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 50,952 psi | 80% | 3025 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 40,277 psi | 63% | 2877 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 39,189 psi | 61% | 2910 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 46,006 psi | 72% | 3005 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 39,073 psi | 61% | 2831 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,037 psi | 75% | 3015 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 48,573 psi | 76% | 3009 fps | 100% |
| Alliant Power Pro 2000-MR | 68.5 gr | 80% | 42,018 psi | 66% | 3028 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,754 psi | 61% | 2858 fps | 97.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,655 psi | 65% | 2927 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 38,841 psi | 61% | 2923 fps | 95.8% |
| Alliant Reloder-17 | 67.4 gr | 80% | 33,547 psi | 53% | 2805 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 33,678 psi | 53% | 2802 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 96% | 39,653 psi | 62% | 3015 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,411 psi | 71% | 3005 fps | 97.6% |
| Bofors RP3 | <<locked>> | 80% | 38,595 psi | 60% | 2861 fps | 97.9% |
| Bofors RP7 | <<locked>> | 92% | 50,720 psi | 79% | 3064 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 49,661 psi | 78% | 3005 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,224 psi | 74% | 3038 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 52,243 psi | 82% | 3199 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 80% | 39,392 psi | 62% | 2861 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 92% | 47,747 psi | 75% | 3091 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 46,427 psi | 73% | 3015 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 33,402 psi | 52% | 2743 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,453 psi | 67% | 2979 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 94% | 51,532 psi | 81% | 3186 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,484 psi | 42% | 1781 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,541 psi | 70% | 2963 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 46,122 psi | 72% | 3018 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,988 psi | 64% | 2874 fps | 97.2% |
| IMR 4166 Enduron | <<locked>> | 84% | 49,327 psi | 77% | 3015 fps | 95.6% |
| IMR 4350 | <<locked>> | 96% | 51,140 psi | 80% | 3091 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 49,385 psi | 77% | 3041 fps | 95.5% |
| IMR 4831 | <<locked>> | 88% | 37,623 psi | 59% | 2854 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 42,699 psi | 67% | 2963 fps | 98% |
| IMR 8208 XBR | <<locked>> | 80% | 48,037 psi | 75% | 3015 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 45,266 psi | 71% | 2982 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 45,716 psi | 72% | 2933 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 40,915 psi | 64% | 2877 fps | 98.7% |
| Lovex S065 | <<locked>> | 88% | 43,352 psi | 68% | 2923 fps | 95.5% |
| Lovex S070 | <<locked>> | 92% | 46,717 psi | 73% | 3012 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 45,049 psi | 71% | 2956 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 45,281 psi | 71% | 2963 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,060 psi | 64% | 2917 fps | 97.6% |
| Norma URP | <<locked>> | 88% | 39,146 psi | 61% | 2907 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 40,785 psi | 64% | 2927 fps | 97.4% |
| Ramshot Hunter | <<locked>> | 92% | 43,714 psi | 69% | 3015 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 48,051 psi | 75% | 3015 fps | 96.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,703 psi | 75% | 3041 fps | 98.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 51,837 psi | 81% | 3068 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,803 psi | 42% | 1821 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 53,751 psi | 84% | 3110 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 45,353 psi | 71% | 2966 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,092 psi | 69% | 3045 fps | 97.7% |
| ReloadSwiss RS 60 | 67.4 gr | 80% | 35,694 psi | 56% | 2884 fps | 98.7% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 38,928 psi | 61% | 2927 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 41,597 psi | 65% | 2999 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 49,023 psi | 77% | 3005 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,844 psi | 67% | 2900 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 36,289 psi | 57% | 2795 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 92% | 50,720 psi | 79% | 3064 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 43,352 psi | 68% | 2923 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,266 psi | 71% | 2982 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 40,915 psi | 64% | 2877 fps | 98.7% |
| Shooters World SW4350 | <<locked>> | 92% | 46,717 psi | 73% | 3012 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,275 psi | 58% | 2848 fps | 96.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,543 psi | 73% | 2992 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,527 psi | 70% | 2969 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,267 psi | 73% | 2910 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,580 psi | 60% | 2756 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 48,994 psi | 77% | 2986 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 52,257 psi | 82% | 3104 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 45,919 psi | 72% | 2907 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,238 psi | 72% | 2989 fps | 98.6% |
| Somchem S355 | <<locked>> | 80% | 37,043 psi | 58% | 2805 fps | 97% |
| Somchem S365 | <<locked>> | 84% | 30,705 psi | 48% | 2723 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 52,098 psi | 82% | 2979 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,601 psi | 73% | 2904 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,380 psi | 66% | 2887 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,975 psi | 67% | 2890 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,273 psi | 55% | 2736 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 86% | 38,348 psi | 60% | 2854 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 48,225 psi | 76% | 3015 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 41,495 psi | 65% | 2874 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 40,306 psi | 63% | 2910 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 94% | 36,506 psi | 57% | 2887 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 33,475 psi | 52% | 2703 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 48,124 psi | 75% | 3061 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 47,964 psi | 75% | 3097 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 98% | 34,171 psi | 54% | 2900 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,121 psi | 69% | 2972 fps | 98.8% |
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 112 powders for 8 x 57 PCC loaded with the .323 | 150gr | Speer Hot-Cor. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,307 fps; across all powders the maximum-charge window runs from 1,988 fps to 3,307 fps. Accurate 3100 gives the best case fill at 100 %, and 112 of the 112 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 150.0 gr projectile in 0.323" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, 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, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 8 x 57 PCC with the .323 | 150gr | Speer Hot-Cor 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.