Load Specifications
Load data in caliber 8 x 57 PCC with .323 | 126gr | Sax MJG-SX bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 52, Alliant Power Pro 2000-MR and ReloadSwiss RS 60.
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>> | 88% | 54,389 psi | 85% | 3291 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 57,537 psi | 90% | 3445 fps | 98.1% |
| Accurate 2460 | <<locked>> | 86% | 56,637 psi | 89% | 3363 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 55,521 psi | 87% | 3350 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 54,665 psi | 86% | 3369 fps | 99.9% |
| Accurate 4064 | <<locked>> | 96% | 55,259 psi | 87% | 3389 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 57,029 psi | 89% | 3287 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 57,464 psi | 90% | 3314 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 57,072 psi | 89% | 3428 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 96% | 54,592 psi | 86% | 3356 fps | 97.8% |
| ADI AR 2219 | <<locked>> | 82% | 54,447 psi | 85% | 3356 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 56,086 psi | 88% | 3379 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 90% | 56,028 psi | 88% | 3376 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 53,925 psi | 85% | 3442 fps | 98.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 56,826 psi | 89% | 3540 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 57,305 psi | 90% | 3438 fps | 99.4% |
| Alliant Reloder-10x | <<locked>> | 86% | 57,334 psi | 90% | 3356 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 54,708 psi | 86% | 3402 fps | 98% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,969 psi | 86% | 3497 fps | 99% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 56,623 psi | 89% | 3268 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 57,043 psi | 89% | 3432 fps | 97.9% |
| Bofors RP3 | <<locked>> | 96% | 54,346 psi | 85% | 3396 fps | 99.1% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,926 psi | 86% | 3317 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 90% | 55,317 psi | 87% | 3406 fps | 99.6% |
| Hodgdon CFE223 | <<locked>> | 88% | 57,246 psi | 90% | 3514 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 86% | 56,826 psi | 89% | 3396 fps | 100% |
| Hodgdon H335 | <<locked>> | 84% | 54,389 psi | 85% | 3356 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,898 psi | 88% | 3402 fps | 97% |
| Hodgdon H4895 | <<locked>> | 92% | 57,566 psi | 90% | 3442 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,163 psi | 68% | 3176 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 56,536 psi | 89% | 3468 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,548 psi | 54% | 2123 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 55,390 psi | 87% | 3386 fps | 98.9% |
| IMR 3031 | <<locked>> | 92% | 56,753 psi | 89% | 3442 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 57,522 psi | 90% | 3402 fps | 98.5% |
| IMR 4198 | <<locked>> | 86% | 57,363 psi | 90% | 3317 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 56,101 psi | 88% | 3442 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 90% | 56,086 psi | 88% | 3379 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 86% | 56,681 psi | 89% | 3369 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 92% | 56,376 psi | 88% | 3402 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,855 psi | 89% | 3350 fps | 98.8% |
| Lovex S062 | <<locked>> | 96% | 56,840 psi | 89% | 3399 fps | 99.5% |
| Norma 200 | <<locked>> | 82% | 57,232 psi | 90% | 3327 fps | 100% |
| Norma 201 | <<locked>> | 92% | 55,535 psi | 87% | 3366 fps | 99.4% |
| Norma 202 | <<locked>> | 92% | 56,028 psi | 88% | 3383 fps | 100% |
| Norma 203B | <<locked>> | 96% | 57,377 psi | 90% | 3448 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 94% | 54,462 psi | 85% | 3412 fps | 98.3% |
| Ramshot TAC | <<locked>> | 90% | 57,029 psi | 89% | 3383 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 90% | 56,318 psi | 88% | 3412 fps | 98.6% |
| Ramshot X-Terminator | <<locked>> | 88% | 57,653 psi | 90% | 3379 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,824 psi | 55% | 2172 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 55,709 psi | 87% | 3369 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 54,708 psi | 86% | 3474 fps | 98% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 54,810 psi | 86% | 3514 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 56,550 psi | 89% | 3366 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 55,941 psi | 88% | 3366 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 98% | 54,172 psi | 85% | 3383 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 92% | 56,376 psi | 88% | 3402 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 56,840 psi | 89% | 3399 fps | 99.5% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,767 psi | 87% | 3333 fps | 99.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 56,942 psi | 89% | 3018 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 54,998 psi | 86% | 3366 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 56,159 psi | 88% | 3448 fps | 98.6% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,752 psi | 86% | 3327 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 55,172 psi | 86% | 3353 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,593 psi | 87% | 3389 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 57,595 psi | 90% | 3320 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 57,580 psi | 90% | 3310 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 54,099 psi | 85% | 3356 fps | 99.4% |
| Somchem S335 | <<locked>> | 92% | 56,695 psi | 89% | 3314 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,563 psi | 86% | 3350 fps | 98.3% |
| Somchem S355 | <<locked>> | 98% | 54,592 psi | 86% | 3379 fps | 98.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,279 psi | 66% | 3228 fps | 97.8% |
| Vihtavuori N130 | <<locked>> | 88% | 57,217 psi | 90% | 3294 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 57,464 psi | 90% | 3307 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 55,071 psi | 86% | 3340 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 56,594 psi | 89% | 3353 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 56,507 psi | 89% | 3366 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 50,009 psi | 78% | 3301 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 90% | 56,913 psi | 89% | 3386 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 94% | 55,042 psi | 86% | 3346 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,590 psi | 81% | 3291 fps | 98.6% |
| Winchester 748 | <<locked>> | 90% | 56,405 psi | 88% | 3435 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 92% | 55,274 psi | 87% | 3399 fps | 99% |
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% | 42,177 psi | 66% | 3068 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 53,954 psi | 85% | 3379 fps | 97.5% |
| Accurate 2460 | <<locked>> | 80% | 46,021 psi | 72% | 3173 fps | 99.4% |
| Accurate 2495 | <<locked>> | 80% | 34,679 psi | 54% | 2940 fps | 99.5% |
| Accurate 2520 | <<locked>> | 80% | 41,263 psi | 65% | 3107 fps | 98.4% |
| Accurate 4064 | <<locked>> | 80% | 32,779 psi | 51% | 2904 fps | 97.1% |
| Accurate LT-30 | <<locked>> | 80% | 50,560 psi | 79% | 3176 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 50,923 psi | 80% | 3199 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 41,408 psi | 65% | 3107 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 90% | 45,223 psi | 71% | 3169 fps | 95.7% |
| ADI AR 2219 | <<locked>> | 80% | 51,010 psi | 80% | 3301 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,698 psi | 64% | 3068 fps | 96.6% |
| Alliant AR-Comp | <<locked>> | 80% | 39,682 psi | 62% | 3091 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,065 psi | 74% | 3304 fps | 97.5% |
| Alliant Power Pro 2000-MR | 72 gr | 88% | 46,166 psi | 72% | 3317 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 39,146 psi | 61% | 3068 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,703 psi | 75% | 3196 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 42,293 psi | 66% | 3146 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 92% | 41,684 psi | 65% | 3209 fps | 95.9% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,734 psi | 78% | 3156 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 46,543 psi | 73% | 3232 fps | 95.7% |
| Bofors RP3 | <<locked>> | 86% | 38,696 psi | 61% | 3068 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,772 psi | 67% | 3074 fps | 97.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,189 psi | 61% | 3077 fps | 96.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 42,902 psi | 67% | 3222 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 46,528 psi | 73% | 3215 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 47,543 psi | 75% | 3232 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 92% | 48,907 psi | 77% | 3268 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 38,972 psi | 61% | 3058 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 40,466 psi | 63% | 3110 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 37,521 psi | 59% | 3068 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,570 psi | 40% | 1903 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 40,161 psi | 63% | 3068 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 37,956 psi | 59% | 3077 fps | 99.4% |
| IMR 4064 | <<locked>> | 86% | 41,858 psi | 66% | 3091 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 48,008 psi | 75% | 3163 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 40,451 psi | 63% | 3117 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 40,698 psi | 64% | 3068 fps | 96.6% |
| Lovex D073.5 | <<locked>> | 80% | 45,847 psi | 72% | 3173 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 80% | 37,217 psi | 58% | 3018 fps | 97.4% |
| Lovex S060 | <<locked>> | 82% | 41,989 psi | 66% | 3054 fps | 95.7% |
| Lovex S062 | <<locked>> | 82% | 36,608 psi | 57% | 2976 fps | 95.4% |
| Norma 200 | <<locked>> | 80% | 53,751 psi | 84% | 3274 fps | 100% |
| Norma 201 | <<locked>> | 80% | 38,014 psi | 60% | 2999 fps | 95.9% |
| Norma 202 | <<locked>> | 80% | 37,971 psi | 60% | 3018 fps | 98.2% |
| Norma 203B | <<locked>> | 86% | 41,597 psi | 65% | 3133 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 86% | 41,408 psi | 65% | 3143 fps | 95.2% |
| Ramshot TAC | <<locked>> | 88% | 53,490 psi | 84% | 3317 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 42,815 psi | 67% | 3143 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,367 psi | 70% | 3123 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,759 psi | 40% | 1946 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,919 psi | 72% | 3186 fps | 99% |
| ReloadSwiss RS 52 | 68.2 gr | 86% | 44,106 psi | 69% | 3261 fps | 95.5% |
| ReloadSwiss RS 60 | 67.7 gr | 84% | 34,026 psi | 53% | 3012 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 41,727 psi | 65% | 3077 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 80% | 36,085 psi | 57% | 2940 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 88% | 38,769 psi | 61% | 3061 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,217 psi | 58% | 3018 fps | 97.4% |
| Shooters World Precision | <<locked>> | 82% | 36,608 psi | 57% | 2976 fps | 95.4% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,631 psi | 76% | 3202 fps | 98.2% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 53,925 psi | 85% | 2976 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,503 psi | 81% | 3304 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 43,018 psi | 67% | 3186 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,254 psi | 76% | 3215 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 47,979 psi | 75% | 3215 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 42,627 psi | 67% | 3130 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,552 psi | 62% | 2976 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,518 psi | 51% | 2808 fps | 97.7% |
| Somchem S321 | <<locked>> | 80% | 43,961 psi | 69% | 3156 fps | 97.8% |
| Somchem S335 | <<locked>> | 80% | 39,117 psi | 61% | 2979 fps | 99.1% |
| Somchem S341 | <<locked>> | 82% | 41,336 psi | 65% | 3084 fps | 95.3% |
| Somchem S355 | <<locked>> | 88% | 39,697 psi | 62% | 3071 fps | 95.5% |
| Somchem S365 | <<locked>> | 96% | 37,028 psi | 58% | 3094 fps | 96% |
| Vihtavuori N130 | <<locked>> | 80% | 44,846 psi | 70% | 3084 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,624 psi | 62% | 2986 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 34,954 psi | 55% | 2943 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 36,013 psi | 56% | 2943 fps | 98.1% |
| Vihtavuori N150 | <<locked>> | 86% | 35,462 psi | 56% | 2936 fps | 95.6% |
| Vihtavuori N160 | <<locked>> | 98% | 46,833 psi | 73% | 3238 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 40,698 psi | 64% | 3061 fps | 96.7% |
| Vihtavuori N540 | <<locked>> | 80% | 34,751 psi | 54% | 2920 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 39,189 psi | 61% | 3025 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 39,755 psi | 62% | 3104 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 82% | 39,218 psi | 61% | 3064 fps | 95.4% |
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 84 powders for 8 x 57 PCC loaded with the .323 | 126gr | Sax MJG-SX. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,540 fps; across all powders the maximum-charge window runs from 2,123 fps to 3,540 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 84 of the 84 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 126.0 gr projectile in 0.323" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon Hybrid 100V, Hodgdon TrailBoss 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 52, Alliant Power Pro 2000-MR, ReloadSwiss RS 60 rank at the top here: for 8 x 57 PCC with the .323 | 126gr | Sax MJG-SX 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.