Load Specifications
Load data in caliber 8 x 57 IS with .323 | 179gr | CutEdge ESP Raptor bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, Winchester 748 and Hodgdon BL-C2.
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 1680 | <<locked>> | 82% | 50,488 psi | 89% | 2454 fps | 100% |
| Accurate 2015 | <<locked>> | 94% | 48,515 psi | 86% | 2503 fps | 100% |
| Accurate 2200 | <<locked>> | 86% | 50,270 psi | 89% | 2572 fps | 96.2% |
| Accurate 2230 | <<locked>> | 86% | 50,546 psi | 89% | 2585 fps | 96.7% |
| Accurate 2460 | <<locked>> | 92% | 50,198 psi | 89% | 2559 fps | 99.6% |
| Accurate 2495ᴾ | <<locked>> | 100% | 46,296 psi | 82% | 2539 fps | 100% |
| Accurate 2520 | <<locked>> | 96% | 50,908 psi | 90% | 2608 fps | 99.5% |
| Accurate 4064ᴾ | <<locked>> | 100% | 42,975 psi | 76% | 2516 fps | 99.4% |
| Accurate LT-30 | <<locked>> | 86% | 48,298 psi | 85% | 2431 fps | 99.9% |
| Accurate LT-32 | <<locked>> | 86% | 48,704 psi | 86% | 2444 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 98% | 51,068 psi | 90% | 2605 fps | 97.3% |
| ADI AR 2207 | <<locked>> | 84% | 48,573 psi | 86% | 2461 fps | 100% |
| ADI AR 2219 | <<locked>> | 88% | 50,082 psi | 89% | 2575 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 96% | 51,010 psi | 90% | 2575 fps | 98.4% |
| Alliant AR-Comp | <<locked>> | 96% | 48,573 psi | 86% | 2579 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 90% | 48,341 psi | 85% | 2618 fps | 97.6% |
| Alliant Reloder- TS 15.5ᴾ | <<locked>> | 100% | 43,395 psi | 77% | 2510 fps | 96.8% |
| Alliant Reloder-10x | <<locked>> | 90% | 49,342 psi | 87% | 2526 fps | 100% |
| Alliant Reloder-15ᴾ | <<locked>> | 100% | 47,964 psi | 85% | 2579 fps | 96.1% |
| Alliant Reloder-7 | <<locked>> | 84% | 49,763 psi | 88% | 2474 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 88% | 49,951 psi | 88% | 2470 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 98% | 50,618 psi | 89% | 2608 fps | 95.9% |
| Bofors RP3ᴾ | <<locked>> | 100% | 43,004 psi | 76% | 2516 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 94% | 50,647 psi | 90% | 2526 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 96% | 48,370 psi | 86% | 2595 fps | 98.6% |
| Hodgdon CFE223 | <<locked>> | 94% | 50,633 psi | 90% | 2671 fps | 96.7% |
| Hodgdon H322 | <<locked>> | 90% | 48,254 psi | 85% | 2549 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 90% | 49,139 psi | 87% | 2569 fps | 99.7% |
| Hodgdon H4198 | <<locked>> | 84% | 50,430 psi | 89% | 2477 fps | 99.9% |
| Hodgdon H4895 | <<locked>> | 96% | 48,211 psi | 85% | 2569 fps | 97.4% |
| Hodgdon LEVERevolutionᴾ | <<locked>> | 100% | 49,400 psi | 87% | 2635 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,938 psi | 58% | 1529 fps | 100% |
| Hodgdon VARGET | <<locked>> | 98% | 49,893 psi | 88% | 2575 fps | 97.5% |
| IMR 3031 | <<locked>> | 98% | 49,095 psi | 87% | 2618 fps | 100% |
| IMR 4064ᴾ | <<locked>> | 100% | 48,095 psi | 85% | 2530 fps | 96.1% |
| IMR 4198 | <<locked>> | 90% | 50,836 psi | 90% | 2500 fps | 100% |
| IMR 4895ᴾ | <<locked>> | 100% | 49,081 psi | 87% | 2612 fps | 97.1% |
| IMR 8208 XBR | <<locked>> | 96% | 51,010 psi | 90% | 2575 fps | 98.4% |
| Lovex D073.4 | <<locked>> | 86% | 50,763 psi | 90% | 2575 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 92% | 50,415 psi | 89% | 2569 fps | 99% |
| Lovex D073.6 | <<locked>> | 98% | 48,385 psi | 86% | 2585 fps | 99.3% |
| Lovex S060 | <<locked>> | 96% | 49,559 psi | 88% | 2507 fps | 97% |
| Lovex S062ᴾ | <<locked>> | 100% | 46,630 psi | 82% | 2530 fps | 97.8% |
| Norma 200 | <<locked>> | 86% | 49,008 psi | 87% | 2500 fps | 100% |
| Norma 201 | <<locked>> | 98% | 49,458 psi | 87% | 2556 fps | 98.3% |
| Norma 202 | <<locked>> | 98% | 49,458 psi | 87% | 2572 fps | 99.7% |
| Norma 203Bᴾ | <<locked>> | 100% | 46,963 psi | 83% | 2569 fps | 96.6% |
| Ramshot Big Gameᴾ | <<locked>> | 100% | 47,587 psi | 84% | 2585 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 96% | 49,908 psi | 88% | 2595 fps | 97% |
| Ramshot X-Terminator | <<locked>> | 92% | 49,777 psi | 88% | 2533 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,924 psi | 58% | 1568 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 92% | 51,155 psi | 90% | 2579 fps | 99.4% |
| ReloadSwiss RS 52ᴾ | <<locked>> | 100% | 50,227 psi | 89% | 2677 fps | 96.6% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 41,959 psi | 74% | 2546 fps | 97.7% |
| Rottweil R 901 | <<locked>> | 96% | 50,401 psi | 89% | 2556 fps | 99.7% |
| Rottweil R 902ᴾ | <<locked>> | 100% | 49,748 psi | 88% | 2552 fps | 98.3% |
| Shooters World AR Plus | <<locked>> | 86% | 50,763 psi | 90% | 2575 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 98% | 48,385 psi | 86% | 2585 fps | 99.3% |
| Shooters World Precisionᴾ | <<locked>> | 100% | 46,630 psi | 82% | 2530 fps | 97.8% |
| Shooters World Tactical Rifle | <<locked>> | 88% | 48,037 psi | 85% | 2493 fps | 97.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 84% | 50,227 psi | 89% | 2244 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 88% | 50,372 psi | 89% | 2579 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 90% | 50,546 psi | 89% | 2539 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 98% | 49,356 psi | 87% | 2575 fps | 96.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 96% | 49,734 psi | 88% | 2487 fps | 99.6% |
| SNPE Vectan Tubal 5000ᴾ | <<locked>> | 100% | 45,310 psi | 80% | 2434 fps | 99.7% |
| Somchem S321 | <<locked>> | 92% | 48,385 psi | 86% | 2562 fps | 98.3% |
| Somchem S335 | <<locked>> | 98% | 51,155 psi | 90% | 2526 fps | 100% |
| Somchem S341 | <<locked>> | 96% | 48,515 psi | 86% | 2549 fps | 96.6% |
| Vihtavuori N120 | <<locked>> | 84% | 48,689 psi | 86% | 2418 fps | 100% |
| Vihtavuori N130 | <<locked>> | 92% | 49,719 psi | 88% | 2477 fps | 100% |
| Vihtavuori N133 | <<locked>> | 96% | 49,197 psi | 87% | 2484 fps | 100% |
| Vihtavuori N135ᴾ | <<locked>> | 100% | 47,471 psi | 84% | 2539 fps | 100% |
| Vihtavuori N140ᴾ | <<locked>> | 100% | 50,183 psi | 89% | 2559 fps | 99.9% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 39,914 psi | 71% | 2408 fps | 96.7% |
| Vihtavuori N530 | <<locked>> | 94% | 48,051 psi | 85% | 2526 fps | 98% |
| Vihtavuori N540ᴾ | <<locked>> | 100% | 48,109 psi | 85% | 2549 fps | 99.5% |
| Winchester 748 | <<locked>> | 96% | 49,487 psi | 87% | 2615 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 98% | 48,631 psi | 86% | 2582 fps | 97.4% |
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 1680 | <<locked>> | 80% | 47,050 psi | 83% | 2408 fps | 100% |
| Accurate 2015 | <<locked>> | 80% | 31,140 psi | 55% | 2201 fps | 98.7% |
| Accurate 2200 | <<locked>> | 84% | 47,079 psi | 83% | 2523 fps | 95.5% |
| Accurate 2230 | <<locked>> | 82% | 43,569 psi | 77% | 2470 fps | 95.1% |
| Accurate 2460 | <<locked>> | 80% | 33,388 psi | 59% | 2270 fps | 96.7% |
| Accurate 2495 | <<locked>> | 80% | 23,308 psi | 41% | 2073 fps | 96.3% |
| Accurate 2520 | <<locked>> | 82% | 31,125 psi | 55% | 2257 fps | 95.4% |
| Accurate 4064 | <<locked>> | 86% | 27,035 psi | 48% | 2185 fps | 95.1% |
| Accurate LT-30 | <<locked>> | 80% | 40,147 psi | 71% | 2300 fps | 99.3% |
| Accurate LT-32 | <<locked>> | 80% | 40,509 psi | 72% | 2310 fps | 98% |
| ADI AR 2206H | <<locked>> | 92% | 42,206 psi | 75% | 2461 fps | 95.3% |
| ADI AR 2207 | <<locked>> | 80% | 42,844 psi | 76% | 2379 fps | 100% |
| ADI AR 2219 | <<locked>> | 80% | 37,826 psi | 67% | 2375 fps | 98.9% |
| ADI Benchmark 8208 | <<locked>> | 86% | 37,173 psi | 66% | 2339 fps | 95.3% |
| Alliant AR-Comp | <<locked>> | 80% | 28,616 psi | 51% | 2218 fps | 99.7% |
| Alliant Power Pro 1200-R | 37.9 gr | 84% | 39,566 psi | 70% | 2461 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 38,435 psi | 68% | 2418 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 35,940 psi | 64% | 2306 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 98% | 44,976 psi | 80% | 2530 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 80% | 44,048 psi | 78% | 2388 fps | 100% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 38,464 psi | 68% | 2293 fps | 99.2% |
| Baschieri & Pellagri 107 | <<locked>> | 96% | 47,572 psi | 84% | 2562 fps | 95.2% |
| Bofors RP3 | <<locked>> | 96% | 37,217 psi | 66% | 2411 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 35,157 psi | 62% | 2254 fps | 95.3% |
| Hodgdon BL-C2 | 41.3 gr | 86% | 34,156 psi | 60% | 2339 fps | 95.1% |
| Hodgdon CFE223 | <<locked>> | 90% | 44,005 psi | 78% | 2559 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 34,621 psi | 61% | 2310 fps | 98.2% |
| Hodgdon H335 | <<locked>> | 80% | 34,838 psi | 62% | 2320 fps | 97.3% |
| Hodgdon H4198 | <<locked>> | 80% | 44,338 psi | 78% | 2382 fps | 99.5% |
| Hodgdon H4895 | <<locked>> | 90% | 39,769 psi | 70% | 2425 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 37,884 psi | 67% | 2428 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,076 psi | 43% | 1362 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 41,234 psi | 73% | 2431 fps | 95.5% |
| IMR 3031 | <<locked>> | 80% | 27,195 psi | 48% | 2188 fps | 96.5% |
| IMR 4064 | <<locked>> | 98% | 45,411 psi | 80% | 2487 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 37,594 psi | 66% | 2293 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 43,105 psi | 76% | 2513 fps | 95.7% |
| IMR 8208 XBR | <<locked>> | 86% | 37,173 psi | 66% | 2339 fps | 95.3% |
| Lovex D073.4 | <<locked>> | 80% | 40,930 psi | 72% | 2418 fps | 98% |
| Lovex D073.5 | <<locked>> | 80% | 33,069 psi | 58% | 2264 fps | 95.1% |
| Lovex D073.6 | <<locked>> | 86% | 31,792 psi | 56% | 2283 fps | 95.6% |
| Lovex S060 | <<locked>> | 90% | 41,423 psi | 73% | 2372 fps | 95% |
| Lovex S062 | <<locked>> | 92% | 36,303 psi | 64% | 2343 fps | 95.2% |
| Norma 200 | <<locked>> | 80% | 40,625 psi | 72% | 2375 fps | 100% |
| Norma 201 | <<locked>> | 88% | 36,056 psi | 64% | 2323 fps | 95.1% |
| Norma 202 | <<locked>> | 82% | 29,689 psi | 52% | 2205 fps | 95.6% |
| Norma 203B | <<locked>> | 96% | 41,263 psi | 73% | 2470 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 98% | 44,396 psi | 78% | 2530 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 92% | 43,671 psi | 77% | 2493 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 88% | 43,439 psi | 77% | 2431 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,207 psi | 43% | 1398 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 34,548 psi | 61% | 2287 fps | 96.1% |
| ReloadSwiss RS 52 | <<locked>> | 96% | 44,048 psi | 78% | 2572 fps | 95% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 36,825 psi | 65% | 2434 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 31,154 psi | 55% | 2201 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 90% | 36,332 psi | 64% | 2320 fps | 95.1% |
| Shooters World AR Plus | <<locked>> | 80% | 40,930 psi | 72% | 2418 fps | 98% |
| Shooters World Match Rifle | <<locked>> | 86% | 31,792 psi | 56% | 2283 fps | 95.6% |
| Shooters World Precision | <<locked>> | 92% | 36,303 psi | 64% | 2343 fps | 95.2% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 39,247 psi | 69% | 2343 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 45,107 psi | 80% | 2178 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 38,276 psi | 68% | 2379 fps | 98.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 36,695 psi | 65% | 2316 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 43,236 psi | 76% | 2477 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 30,124 psi | 53% | 2133 fps | 95.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 27,499 psi | 49% | 2090 fps | 95.7% |
| Somchem S321 | <<locked>> | 84% | 36,709 psi | 65% | 2356 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 29,385 psi | 52% | 2136 fps | 96.4% |
| Somchem S341 | <<locked>> | 92% | 42,148 psi | 75% | 2444 fps | 95% |
| Vihtavuori N120 | <<locked>> | 80% | 42,975 psi | 76% | 2339 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 34,447 psi | 61% | 2231 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 80% | 29,936 psi | 53% | 2146 fps | 98.2% |
| Vihtavuori N135 | <<locked>> | 80% | 24,903 psi | 44% | 2096 fps | 96.7% |
| Vihtavuori N140 | <<locked>> | 82% | 28,137 psi | 50% | 2146 fps | 95.3% |
| Vihtavuori N150 | <<locked>> | 96% | 34,983 psi | 62% | 2316 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 86% | 36,941 psi | 65% | 2333 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 86% | 30,560 psi | 54% | 2221 fps | 95.7% |
| Winchester 748 | 40.6 gr | 86% | 35,433 psi | 63% | 2362 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 92% | 39,581 psi | 70% | 2428 fps | 95.2% |
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 79 powders for 8 x 57 IS loaded with the .323 | 179gr | CutEdge ESP Raptor. ReloadSwiss RS 52 delivers the highest muzzle velocity at 2,677 fps; across all powders the maximum-charge window runs from 1,529 fps to 2,677 fps. Accurate 2495 gives the best case fill at 100 %, and 79 of the 79 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 179.0 gr projectile in 0.323" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 2495, Accurate 4064, Alliant Reloder- TS 15.5 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 1200-R, Winchester 748, Hodgdon BL-C2 rank at the top here: for 8 x 57 IS with the .323 | 179gr | CutEdge ESP Raptor 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.