Load data for 8 x 57 PCC + .323 | 150gr | Speer Hot-Cor

8 x 57 PCC cartridge drawing
Speer logo

Load Specifications

Bullet Manufacturer:Speer
Bullet Weight:150 gr
Bullet Diameter:0.323"
Bullet Length:<<locked>>
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:1:6.0

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"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>84%56,478 psi89%3084 fps100%
Accurate 2495<<locked>>88%55,521 psi87%3104 fps100%
Accurate 2520<<locked>>84%57,319 psi90%3176 fps100%
Accurate 2700<<locked>>88%54,491 psi85%3087 fps95.9%
Accurate 4064<<locked>>90%55,405 psi87%3150 fps100%
Accurate 4350<<locked>>98%55,593 psi87%3232 fps99.2%
ADI AR 2206H<<locked>>86%55,651 psi87%3182 fps99.7%
ADI AR 2208<<locked>>92%56,623 psi89%3179 fps99.5%
ADI Benchmark 8208<<locked>>84%54,549 psi85%3130 fps100%
Alliant AR-Comp<<locked>>84%55,506 psi87%3114 fps100%
Alliant Power Pro 2000-MR<<locked>>88%55,492 psi87%3307 fps99.5%
Alliant Reloder- TS 15.5<<locked>>92%56,855 psi89%3205 fps100%
Alliant Reloder-15<<locked>>90%57,406 psi90%3228 fps99.7%
Alliant Reloder-16ᴾ<<locked>>100%56,478 psi89%3291 fps99.6%
Alliant Reloder-17<<locked>>94%54,331 psi85%3274 fps99.9%
Alliant Reloder-23ᴾ<<locked>>100%40,683 psi64%2989 fps98.1%
Alliant Reloder-26ᴾ<<locked>>100%45,919 psi72%3166 fps97.4%
Baschieri & Pellagri 107<<locked>>86%55,695 psi87%3196 fps99.3%
Bofors RP3<<locked>>92%57,725 psi90%3225 fps100%
Bofors RP7<<locked>>96%57,595 psi90%3182 fps96.8%
Hodgdon Benchmark<<locked>>84%56,217 psi88%3117 fps100%
Hodgdon BL-C2<<locked>>84%54,114 psi85%3156 fps100%
Hodgdon CFE223<<locked>>82%55,970 psi88%3264 fps99.6%
Hodgdon H380<<locked>>90%54,969 psi86%3176 fps98.7%
Hodgdon H414<<locked>>96%54,650 psi86%3222 fps96.9%
Hodgdon H4895<<locked>>86%56,202 psi88%3196 fps99.9%
Hodgdon Hybrid 100Vᴾ<<locked>>100%52,823 psi83%3156 fps99.8%
Hodgdon LEVERevolution<<locked>>88%55,970 psi88%3232 fps100%
Hodgdon Superformance<<locked>>96%55,521 psi87%3258 fps96.6%
Hodgdon TrailBossᴾ<<locked>>100%35,563 psi56%1988 fps100%
Hodgdon VARGET<<locked>>88%57,551 psi90%3199 fps100%
IMR 3031<<locked>>86%56,289 psi88%3182 fps100%
IMR 4064<<locked>>90%56,188 psi88%3166 fps99.6%
IMR 4166 Enduron<<locked>>88%56,057 psi88%3136 fps97.1%
IMR 4350<<locked>>98%54,505 psi85%3150 fps96.2%
IMR 4451 Enduron<<locked>>94%55,912 psi88%3159 fps96.9%
IMR 4831ᴾ<<locked>>100%56,101 psi88%3222 fps99.3%
IMR 4895<<locked>>88%55,274 psi87%3205 fps99.7%
IMR 8208 XBR<<locked>>84%54,549 psi85%3130 fps100%
Lovex D073.6<<locked>>86%55,608 psi87%3159 fps100%
Lovex S060<<locked>>86%54,984 psi86%3107 fps99.7%
Lovex S062<<locked>>90%55,985 psi88%3159 fps100%
Lovex S065<<locked>>96%55,550 psi87%3156 fps98.2%
Lovex S070<<locked>>98%56,550 psi89%3192 fps97.4%
Norma 201<<locked>>86%54,331 psi85%3123 fps100%
Norma 202<<locked>>86%54,998 psi86%3130 fps100%
Norma 203B<<locked>>90%56,579 psi89%3215 fps99.8%
Norma URP<<locked>>98%54,578 psi86%3219 fps99%
Ramshot Big Game<<locked>>90%57,450 psi90%3241 fps99.8%
Ramshot Hunterᴾ<<locked>>100%57,203 psi90%3271 fps98.2%
Ramshot TAC<<locked>>84%54,955 psi86%3143 fps98.2%
Ramshot Wild Boar<<locked>>84%54,563 psi86%3163 fps99.6%
Ramshot X-Terminator<<locked>>82%55,317 psi87%3127 fps99.6%
ReloadSwiss RS 14ᴾ<<locked>>100%35,998 psi56%2034 fps100%
ReloadSwiss RS 40<<locked>>82%57,493 psi90%3169 fps100%
ReloadSwiss RS 50<<locked>>90%55,187 psi86%3153 fps97.5%
ReloadSwiss RS 52<<locked>>86%54,201 psi85%3238 fps99.4%
ReloadSwiss RS 60<<locked>>92%53,998 psi85%3278 fps100%
ReloadSwiss RS 62<<locked>>98%55,419 psi87%3251 fps99%
ReloadSwiss RS 70<<locked>>98%55,013 psi86%3281 fps98.8%
Rottweil R 901<<locked>>84%55,201 psi87%3114 fps100%
Rottweil R 902<<locked>>88%54,940 psi86%3123 fps100%
Rottweil R 903<<locked>>94%57,566 psi90%3215 fps100%
Rottweil R 907<<locked>>96%57,595 psi90%3182 fps96.8%
Shooters World Long Rifle<<locked>>96%55,550 psi87%3156 fps98.2%
Shooters World Match Rifle<<locked>>86%55,608 psi87%3159 fps100%
Shooters World Precision<<locked>>90%55,985 psi88%3159 fps100%
Shooters World SW4350<<locked>>98%56,550 psi89%3192 fps97.4%
SNPE Vectan SP 11<<locked>>92%55,637 psi87%3219 fps99.7%
SNPE Vectan SP 7<<locked>>86%57,116 psi90%3179 fps98.9%
SNPE Vectan SP 9<<locked>>88%57,696 psi90%3205 fps99.8%
SNPE Vectan Tubal 3000<<locked>>86%55,622 psi87%3068 fps100%
SNPE Vectan Tubal 5000<<locked>>92%56,115 psi88%3061 fps100%
SNPE Vectan Tubal 7000<<locked>>96%55,782 psi87%3104 fps97%
Somchem S321<<locked>>82%55,840 psi88%3163 fps100%
Somchem S335<<locked>>86%55,187 psi86%3061 fps100%
Somchem S341<<locked>>86%56,782 psi89%3173 fps99.8%
Somchem S355<<locked>>92%54,172 psi85%3153 fps99.8%
Somchem S365ᴾ<<locked>>100%52,562 psi82%3222 fps100%
Vihtavuori N130<<locked>>82%55,303 psi87%3028 fps100%
Vihtavuori N133<<locked>>86%55,883 psi88%3051 fps100%
Vihtavuori N135<<locked>>88%54,708 psi86%3094 fps100%
Vihtavuori N140<<locked>>88%55,405 psi87%3107 fps100%
Vihtavuori N150<<locked>>94%55,695 psi87%3133 fps100%
Vihtavuori N160<<locked>>98%57,029 psi89%3215 fps99.2%
Vihtavuori N530<<locked>>84%54,969 psi86%3130 fps100%
Vihtavuori N540<<locked>>90%57,334 psi90%3150 fps100%
Vihtavuori N550<<locked>>98%56,072 psi88%3219 fps99%
Vihtavuori N555ᴾ<<locked>>100%44,846 psi70%3077 fps98%
Winchester 6.5 StaBALL<<locked>>98%57,609 psi90%3192 fps100%
Winchester 748<<locked>>84%55,013 psi86%3179 fps100%
Winchester 760<<locked>>96%54,868 psi86%3225 fps97%
Winchester StaBALL HDᴾ<<locked>>100%36,564 psi57%2976 fps97.7%
Winchester StaBALL Match<<locked>>88%57,696 psi90%3215 fps100%

Recommended = one of the top powders for this cartridge and bullet combination.

Start Load - Barrel Length: 23.62"

PowderChargeFRMaxP%V(0)z
Accurate 2015<<locked>>80%49,792 psi78%2979 fps100%
Accurate 2495<<locked>>80%42,627 psi67%2890 fps100%
Accurate 2520<<locked>>80%49,893 psi78%3058 fps100%
Accurate 2700<<locked>>86%50,952 psi80%3025 fps95%
Accurate 4064<<locked>>80%40,277 psi63%2877 fps99.9%
Accurate 4350<<locked>>88%39,189 psi61%2910 fps95.7%
ADI AR 2206H<<locked>>80%46,006 psi72%3005 fps98.6%
ADI AR 2208<<locked>>80%39,073 psi61%2831 fps96.3%
ADI Benchmark 8208<<locked>>80%48,037 psi75%3015 fps99.6%
Alliant AR-Comp<<locked>>80%48,573 psi76%3009 fps100%
Alliant Power Pro 2000-MR68.5 gr80%42,018 psi66%3028 fps97%
Alliant Reloder- TS 15.5<<locked>>80%38,754 psi61%2858 fps97.9%
Alliant Reloder-15<<locked>>80%41,655 psi65%2927 fps97.2%
Alliant Reloder-16<<locked>>88%38,841 psi61%2923 fps95.8%
Alliant Reloder-1767.4 gr80%33,547 psi53%2805 fps95.5%
Alliant Reloder-23<<locked>>94%33,678 psi53%2802 fps95.4%
Alliant Reloder-26<<locked>>96%39,653 psi62%3015 fps95.2%
Baschieri & Pellagri 107<<locked>>80%45,411 psi71%3005 fps97.6%
Bofors RP3<<locked>>80%38,595 psi60%2861 fps97.9%
Bofors RP7<<locked>>92%50,720 psi79%3064 fps95.3%
Hodgdon Benchmark<<locked>>80%49,661 psi78%3005 fps99.9%
Hodgdon BL-C2<<locked>>80%47,224 psi74%3038 fps99.8%
Hodgdon CFE223<<locked>>80%52,243 psi82%3199 fps99.2%
Hodgdon H380<<locked>>80%39,392 psi62%2861 fps95.2%
Hodgdon H414<<locked>>92%47,747 psi75%3091 fps95.2%
Hodgdon H4895<<locked>>80%46,427 psi73%3015 fps99.1%
Hodgdon Hybrid 100V<<locked>>86%33,402 psi52%2743 fps95.6%
Hodgdon LEVERevolution<<locked>>80%42,453 psi67%2979 fps98.8%
Hodgdon Superformance<<locked>>94%51,532 psi81%3186 fps95.7%
Hodgdon TrailBoss<<locked>>80%26,484 psi42%1781 fps100%
Hodgdon VARGET<<locked>>80%44,541 psi70%2963 fps98.7%
IMR 3031<<locked>>80%46,122 psi72%3018 fps100%
IMR 4064<<locked>>80%40,988 psi64%2874 fps97.2%
IMR 4166 Enduron<<locked>>84%49,327 psi77%3015 fps95.6%
IMR 4350<<locked>>96%51,140 psi80%3091 fps95.4%
IMR 4451 Enduron<<locked>>90%49,385 psi77%3041 fps95.5%
IMR 4831<<locked>>88%37,623 psi59%2854 fps95.3%
IMR 4895<<locked>>80%42,699 psi67%2963 fps98%
IMR 8208 XBR<<locked>>80%48,037 psi75%3015 fps99.6%
Lovex D073.6<<locked>>80%45,266 psi71%2982 fps99.9%
Lovex S060<<locked>>80%45,716 psi72%2933 fps98.6%
Lovex S062<<locked>>80%40,915 psi64%2877 fps98.7%
Lovex S065<<locked>>88%43,352 psi68%2923 fps95.5%
Lovex S070<<locked>>92%46,717 psi73%3012 fps95.2%
Norma 201<<locked>>80%45,049 psi71%2956 fps99.3%
Norma 202<<locked>>80%45,281 psi71%2963 fps100%
Norma 203B<<locked>>80%41,060 psi64%2917 fps97.6%
Norma URP<<locked>>88%39,146 psi61%2907 fps95.6%
Ramshot Big Game<<locked>>80%40,785 psi64%2927 fps97.4%
Ramshot Hunter<<locked>>92%43,714 psi69%3015 fps95.1%
Ramshot TAC<<locked>>80%48,051 psi75%3015 fps96.9%
Ramshot Wild Boar<<locked>>80%47,703 psi75%3041 fps98.9%
Ramshot X-Terminator<<locked>>80%51,837 psi81%3068 fps99.3%
ReloadSwiss RS 14<<locked>>80%26,803 psi42%1821 fps100%
ReloadSwiss RS 40<<locked>>80%53,751 psi84%3110 fps100%
ReloadSwiss RS 50<<locked>>84%45,353 psi71%2966 fps95.2%
ReloadSwiss RS 52<<locked>>80%44,092 psi69%3045 fps97.7%
ReloadSwiss RS 6067.4 gr80%35,694 psi56%2884 fps98.7%
ReloadSwiss RS 62<<locked>>88%38,928 psi61%2927 fps95.2%
ReloadSwiss RS 70<<locked>>90%41,597 psi65%2999 fps95.3%
Rottweil R 901<<locked>>80%49,023 psi77%3005 fps100%
Rottweil R 902<<locked>>80%42,844 psi67%2900 fps99%
Rottweil R 903<<locked>>80%36,289 psi57%2795 fps96.9%
Rottweil R 907<<locked>>92%50,720 psi79%3064 fps95.3%
Shooters World Long Rifle<<locked>>88%43,352 psi68%2923 fps95.5%
Shooters World Match Rifle<<locked>>80%45,266 psi71%2982 fps99.9%
Shooters World Precision<<locked>>80%40,915 psi64%2877 fps98.7%
Shooters World SW4350<<locked>>92%46,717 psi73%3012 fps95.2%
SNPE Vectan SP 11<<locked>>80%37,275 psi58%2848 fps96.4%
SNPE Vectan SP 7<<locked>>80%46,543 psi73%2992 fps97.1%
SNPE Vectan SP 9<<locked>>80%44,527 psi70%2969 fps98.4%
SNPE Vectan Tubal 3000<<locked>>80%46,267 psi73%2910 fps100%
SNPE Vectan Tubal 5000<<locked>>80%38,580 psi60%2756 fps99.9%
SNPE Vectan Tubal 7000<<locked>>92%48,994 psi77%2986 fps95.5%
Somchem S321<<locked>>80%52,257 psi82%3104 fps100%
Somchem S335<<locked>>80%45,919 psi72%2907 fps100%
Somchem S341<<locked>>80%46,238 psi72%2989 fps98.6%
Somchem S355<<locked>>80%37,043 psi58%2805 fps97%
Somchem S365<<locked>>84%30,705 psi48%2723 fps96%
Vihtavuori N130<<locked>>80%52,098 psi82%2979 fps100%
Vihtavuori N133<<locked>>80%46,601 psi73%2904 fps100%
Vihtavuori N135<<locked>>80%42,380 psi66%2887 fps100%
Vihtavuori N140<<locked>>80%42,975 psi67%2890 fps100%
Vihtavuori N150<<locked>>80%35,273 psi55%2736 fps97.8%
Vihtavuori N160<<locked>>86%38,348 psi60%2854 fps95.2%
Vihtavuori N530<<locked>>80%48,225 psi76%3015 fps99.7%
Vihtavuori N540<<locked>>80%41,495 psi65%2874 fps99.8%
Vihtavuori N550<<locked>>88%40,306 psi63%2910 fps95.7%
Vihtavuori N555<<locked>>94%36,506 psi57%2887 fps95.5%
Winchester 6.5 StaBALL<<locked>>82%33,475 psi52%2703 fps95.8%
Winchester 748<<locked>>80%48,124 psi75%3061 fps99.9%
Winchester 760<<locked>>92%47,964 psi75%3097 fps95.3%
Winchester StaBALL HD<<locked>>98%34,171 psi54%2900 fps96.4%
Winchester StaBALL Match<<locked>>80%44,121 psi69%2972 fps98.8%

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.

<<locked>> you need an access license to unlock this data.

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.

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