Load Specifications
Load data in caliber 8 x 57 PCC with .323 | 124gr | Prvi Partizan FMJ BT bullet and 89 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: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 56,130 psi | 88% | 3350 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 54,882 psi | 86% | 3369 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 54,244 psi | 85% | 3360 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,739 psi | 89% | 3435 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 54,143 psi | 85% | 3402 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,009 psi | 78% | 3379 fps | 96.5% |
| Accurate LT-30 | <<locked>> | 82% | 55,114 psi | 86% | 3294 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 55,492 psi | 87% | 3317 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 55,376 psi | 87% | 3435 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 96% | 56,565 psi | 89% | 3428 fps | 98.3% |
| ADI AR 2219 | <<locked>> | 82% | 56,391 psi | 88% | 3425 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 88% | 54,549 psi | 85% | 3389 fps | 99.3% |
| Alliant AR-Comp | <<locked>> | 88% | 54,491 psi | 85% | 3386 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 55,985 psi | 88% | 3514 fps | 99.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 55,071 psi | 86% | 3547 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 56,115 psi | 88% | 3451 fps | 99.3% |
| Alliant Reloder-10x | <<locked>> | 84% | 55,753 psi | 87% | 3366 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 56,797 psi | 89% | 3474 fps | 98.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,863 psi | 77% | 3383 fps | 96.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 57,435 psi | 90% | 3579 fps | 99.4% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 54,781 psi | 86% | 3274 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 55,463 psi | 87% | 3438 fps | 97.8% |
| Bofors RP3 | <<locked>> | 96% | 56,913 psi | 89% | 3471 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 88% | 56,478 psi | 89% | 3379 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 90% | 57,595 psi | 90% | 3478 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 86% | 55,477 psi | 87% | 3517 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 84% | 55,013 psi | 86% | 3402 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 56,391 psi | 88% | 3422 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 54,563 psi | 86% | 3412 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 90% | 55,898 psi | 88% | 3451 fps | 99.1% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,991 psi | 71% | 3248 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,071 psi | 86% | 3474 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,737 psi | 54% | 2162 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 57,493 psi | 90% | 3455 fps | 99.2% |
| IMR 3031 | <<locked>> | 90% | 55,317 psi | 87% | 3448 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,883 psi | 88% | 3409 fps | 98.4% |
| IMR 4198 | <<locked>> | 84% | 55,680 psi | 87% | 3330 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,616 psi | 75% | 3310 fps | 96.1% |
| IMR 4895 | <<locked>> | 92% | 54,592 psi | 86% | 3448 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 88% | 54,549 psi | 85% | 3389 fps | 99.3% |
| Lovex D073.5 | <<locked>> | 84% | 54,824 psi | 86% | 3373 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 90% | 54,853 psi | 86% | 3412 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 55,187 psi | 86% | 3356 fps | 98.7% |
| Lovex S062 | <<locked>> | 94% | 55,506 psi | 87% | 3409 fps | 99.5% |
| Lovex S065ᴾ | <<locked>> | 100% | 54,824 psi | 86% | 3379 fps | 96.1% |
| Norma 201 | <<locked>> | 92% | 57,609 psi | 90% | 3438 fps | 99.6% |
| Norma 202 | <<locked>> | 90% | 54,491 psi | 85% | 3389 fps | 100% |
| Norma 203B | <<locked>> | 94% | 55,912 psi | 88% | 3461 fps | 98.8% |
| Norma URPᴾ | <<locked>> | 100% | 49,690 psi | 78% | 3373 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 94% | 56,710 psi | 89% | 3484 fps | 98.8% |
| Ramshot TAC | <<locked>> | 88% | 55,216 psi | 87% | 3389 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 88% | 54,433 psi | 85% | 3415 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 86% | 56,028 psi | 88% | 3386 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,012 psi | 55% | 2211 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 57,609 psi | 90% | 3435 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 57,101 psi | 89% | 3550 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 57,159 psi | 90% | 3593 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,980 psi | 78% | 3396 fps | 96.2% |
| Rottweil R 901 | <<locked>> | 88% | 55,042 psi | 86% | 3376 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 54,607 psi | 86% | 3376 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 98% | 56,492 psi | 89% | 3451 fps | 99.3% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 54,824 psi | 86% | 3379 fps | 96.1% |
| Shooters World Match Rifle | <<locked>> | 90% | 54,853 psi | 86% | 3412 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 55,506 psi | 87% | 3409 fps | 99.5% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 57,725 psi | 90% | 3402 fps | 99.5% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 56,913 psi | 89% | 3432 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 54,737 psi | 86% | 3458 fps | 98.6% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 55,970 psi | 88% | 3317 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 57,290 psi | 90% | 3425 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 57,493 psi | 90% | 3458 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 56,014 psi | 88% | 3330 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 55,854 psi | 88% | 3317 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 56,159 psi | 88% | 3428 fps | 99.6% |
| Somchem S335 | <<locked>> | 90% | 55,100 psi | 86% | 3320 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 56,637 psi | 89% | 3419 fps | 98.8% |
| Somchem S355 | <<locked>> | 98% | 56,797 psi | 89% | 3451 fps | 99.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,222 psi | 69% | 3304 fps | 98.4% |
| Vihtavuori N130 | <<locked>> | 86% | 55,521 psi | 87% | 3304 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,970 psi | 88% | 3317 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 57,188 psi | 90% | 3406 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 55,071 psi | 86% | 3363 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 55,085 psi | 86% | 3379 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,185 psi | 82% | 3373 fps | 96.8% |
| Vihtavuori N530 | <<locked>> | 88% | 55,230 psi | 87% | 3392 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 94% | 57,159 psi | 90% | 3412 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 51,474 psi | 81% | 3376 fps | 96.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 53,693 psi | 84% | 3363 fps | 99% |
| Winchester 748 | <<locked>> | 88% | 54,679 psi | 86% | 3438 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 92% | 57,406 psi | 90% | 3465 fps | 99.3% |
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% | 43,627 psi | 68% | 3130 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,776 psi | 75% | 3238 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 36,260 psi | 57% | 3005 fps | 99.7% |
| Accurate 2520 | <<locked>> | 80% | 42,975 psi | 67% | 3173 fps | 98.8% |
| Accurate 4064 | <<locked>> | 80% | 34,243 psi | 54% | 2972 fps | 97.6% |
| Accurate 4350 | <<locked>> | 98% | 46,572 psi | 73% | 3307 fps | 95.6% |
| Accurate LT-30 | <<locked>> | 80% | 51,880 psi | 81% | 3235 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 52,257 psi | 82% | 3261 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 80% | 40,205 psi | 63% | 3110 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 88% | 43,976 psi | 69% | 3176 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 52,750 psi | 83% | 3366 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,192 psi | 66% | 3136 fps | 97.2% |
| Alliant AR-Comp | <<locked>> | 80% | 41,495 psi | 65% | 3156 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 48,950 psi | 77% | 3379 fps | 98% |
| Alliant Power Pro 2000-MR | 73.6 gr | 86% | 44,715 psi | 70% | 3320 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 38,101 psi | 60% | 3074 fps | 95.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 49,081 psi | 77% | 3255 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 43,874 psi | 69% | 3215 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 98% | 45,977 psi | 72% | 3317 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 90% | 40,509 psi | 63% | 3212 fps | 95.7% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 51,387 psi | 81% | 3219 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 45,121 psi | 71% | 3232 fps | 95.4% |
| Bofors RP3 | <<locked>> | 84% | 37,637 psi | 59% | 3068 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,135 psi | 69% | 3140 fps | 98.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,741 psi | 64% | 3143 fps | 97.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,701 psi | 70% | 3297 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 80% | 48,138 psi | 75% | 3281 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 49,240 psi | 77% | 3297 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 90% | 47,601 psi | 75% | 3278 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 40,495 psi | 63% | 3127 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 39,552 psi | 62% | 3117 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 38,986 psi | 61% | 3133 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,788 psi | 40% | 1939 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,986 psi | 61% | 3071 fps | 95.3% |
| IMR 3031 | <<locked>> | 80% | 39,465 psi | 62% | 3143 fps | 99.7% |
| IMR 4064 | <<locked>> | 86% | 43,468 psi | 68% | 3159 fps | 95.7% |
| IMR 4198 | <<locked>> | 80% | 49,371 psi | 77% | 3222 fps | 100% |
| IMR 4831 | <<locked>> | 98% | 44,454 psi | 70% | 3241 fps | 95.1% |
| IMR 4895 | <<locked>> | 84% | 42,090 psi | 66% | 3189 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 42,192 psi | 66% | 3136 fps | 97.2% |
| Lovex D073.5 | <<locked>> | 80% | 47,732 psi | 75% | 3245 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 80% | 38,754 psi | 61% | 3084 fps | 97.9% |
| Lovex S060 | <<locked>> | 80% | 40,582 psi | 64% | 3051 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 35,505 psi | 56% | 2976 fps | 95.1% |
| Lovex S065 | <<locked>> | 98% | 51,430 psi | 81% | 3317 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 39,392 psi | 62% | 3064 fps | 96.4% |
| Norma 202 | <<locked>> | 80% | 39,392 psi | 62% | 3084 fps | 98.6% |
| Norma 203B | <<locked>> | 84% | 40,422 psi | 63% | 3133 fps | 95.3% |
| Norma URP | <<locked>> | 98% | 46,456 psi | 73% | 3307 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 86% | 43,004 psi | 67% | 3212 fps | 95.9% |
| Ramshot TAC | <<locked>> | 86% | 51,735 psi | 81% | 3320 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,510 psi | 65% | 3143 fps | 95.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,803 psi | 72% | 3189 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,962 psi | 41% | 1982 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,340 psi | 74% | 3248 fps | 99.2% |
| ReloadSwiss RS 52 | 69.7 gr | 84% | 42,960 psi | 67% | 3264 fps | 95.3% |
| ReloadSwiss RS 60 | 69.1 gr | 82% | 32,996 psi | 52% | 3009 fps | 95% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 46,485 psi | 73% | 3327 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 43,149 psi | 68% | 3143 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 80% | 37,420 psi | 59% | 3005 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 86% | 37,681 psi | 59% | 3061 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 98% | 51,430 psi | 81% | 3317 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,754 psi | 61% | 3084 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 35,505 psi | 56% | 2976 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 50,314 psi | 79% | 3268 fps | 98.6% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 53,229 psi | 83% | 3366 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 41,829 psi | 66% | 3189 fps | 95.6% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 41,017 psi | 64% | 3048 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 49,719 psi | 78% | 3287 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,379 psi | 65% | 3130 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,886 psi | 64% | 3041 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,678 psi | 53% | 2867 fps | 98.1% |
| Somchem S321 | <<locked>> | 80% | 45,658 psi | 72% | 3225 fps | 98.3% |
| Somchem S335 | <<locked>> | 80% | 40,466 psi | 63% | 3038 fps | 99.3% |
| Somchem S341 | <<locked>> | 80% | 40,089 psi | 63% | 3084 fps | 95% |
| Somchem S355 | <<locked>> | 86% | 38,725 psi | 61% | 3074 fps | 95.3% |
| Somchem S365 | <<locked>> | 94% | 36,245 psi | 57% | 3097 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 46,267 psi | 73% | 3143 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,017 psi | 64% | 3048 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,390 psi | 57% | 3009 fps | 99.7% |
| Vihtavuori N140 | <<locked>> | 80% | 37,333 psi | 59% | 3005 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 84% | 34,635 psi | 54% | 2940 fps | 95.4% |
| Vihtavuori N160 | <<locked>> | 96% | 45,629 psi | 72% | 3245 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 42,192 psi | 66% | 3130 fps | 97.3% |
| Vihtavuori N540 | <<locked>> | 80% | 36,042 psi | 56% | 2982 fps | 97.7% |
| Vihtavuori N550 | <<locked>> | 98% | 48,008 psi | 75% | 3307 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 38,101 psi | 60% | 3025 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 41,437 psi | 65% | 3173 fps | 97.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,087 psi | 60% | 3064 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 107 powders for 8 x 57 PCC loaded with the .323 | 124gr | Prvi Partizan FMJ BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,593 fps; across all powders the maximum-charge window runs from 2,162 fps to 3,593 fps. Accurate 4350 gives the best case fill at 100 %, and 107 of the 107 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. 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 57 PCC with the .323 | 124gr | Prvi Partizan FMJ BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Alliant Reloder-23, Bofors RP7 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.