Load Specifications
Load data in caliber 8 x 56 R M 89 Port. Krop. with .323 | 179gr | CutEdge ESP Raptor bullet and 66 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Hodgdon BL-C2 and Hodgdon LEVERevolution.
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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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 88% | 43,352 psi | 88% | 2457 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 44,222 psi | 90% | 2500 fps | 99.4% |
| Accurate 2495 | <<locked>> | 96% | 44,048 psi | 89% | 2530 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 42,917 psi | 87% | 2530 fps | 99% |
| Accurate 4064 | <<locked>> | 98% | 44,106 psi | 89% | 2562 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 90% | 42,569 psi | 86% | 2500 fps | 96.1% |
| ADI AR 2219 | <<locked>> | 82% | 43,627 psi | 88% | 2507 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 88% | 42,322 psi | 86% | 2470 fps | 97.4% |
| Alliant AR-Comp | <<locked>> | 90% | 43,192 psi | 88% | 2526 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 42,670 psi | 87% | 2552 fps | 96.9% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 43,004 psi | 87% | 2516 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 44,179 psi | 90% | 2556 fps | 97.5% |
| Alliant Reloder-10x | <<locked>> | 84% | 43,758 psi | 89% | 2470 fps | 100% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 42,032 psi | 85% | 2575 fps | 96% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 43,656 psi | 89% | 2411 fps | 99.9% |
| Bofors RP3 | <<locked>> | 98% | 43,656 psi | 89% | 2559 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 42,293 psi | 86% | 2425 fps | 97.9% |
| Hodgdon BL-C2 | <<locked>> | 90% | 42,627 psi | 86% | 2533 fps | 98.1% |
| Hodgdon CFE223 | <<locked>> | 88% | 44,251 psi | 90% | 2602 fps | 95.9% |
| Hodgdon H322 | <<locked>> | 84% | 42,453 psi | 86% | 2487 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 84% | 43,033 psi | 87% | 2503 fps | 99.4% |
| Hodgdon H4895 | <<locked>> | 90% | 42,844 psi | 87% | 2513 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 43,642 psi | 89% | 2575 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,344 psi | 68% | 1565 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 44,338 psi | 90% | 2520 fps | 97% |
| IMR 3031 | <<locked>> | 92% | 43,613 psi | 88% | 2562 fps | 100% |
| IMR 4198 | <<locked>> | 82% | 42,685 psi | 87% | 2408 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 43,642 psi | 89% | 2556 fps | 96.6% |
| IMR 8208 XBR | <<locked>> | 88% | 42,322 psi | 86% | 2470 fps | 97.4% |
| Lovex D073.5 | <<locked>> | 86% | 44,237 psi | 90% | 2507 fps | 98.6% |
| Lovex D073.6 | <<locked>> | 92% | 42,917 psi | 87% | 2530 fps | 99% |
| Lovex S060 | <<locked>> | 90% | 43,976 psi | 89% | 2451 fps | 96.4% |
| Lovex S062 | <<locked>> | 96% | 44,585 psi | 90% | 2530 fps | 98% |
| Norma 201 | <<locked>> | 92% | 44,106 psi | 89% | 2507 fps | 97.8% |
| Norma 202 | <<locked>> | 92% | 44,164 psi | 90% | 2523 fps | 99.5% |
| Norma 203B | <<locked>> | 94% | 41,843 psi | 85% | 2513 fps | 96% |
| Ramshot Wild Boar | <<locked>> | 90% | 43,961 psi | 89% | 2533 fps | 96.4% |
| Ramshot X-Terminator | <<locked>> | 86% | 43,511 psi | 88% | 2467 fps | 96% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,344 psi | 68% | 1601 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 42,206 psi | 86% | 2467 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 42,177 psi | 86% | 2595 fps | 98.5% |
| Rottweil R 901 | <<locked>> | 88% | 42,569 psi | 86% | 2461 fps | 99.1% |
| Rottweil R 902 | <<locked>> | 94% | 44,382 psi | 90% | 2500 fps | 97.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 43,569 psi | 88% | 2549 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 92% | 42,917 psi | 87% | 2530 fps | 99% |
| Shooters World Precision | <<locked>> | 96% | 44,585 psi | 90% | 2530 fps | 98% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 41,959 psi | 85% | 2428 fps | 96.9% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 44,005 psi | 89% | 2510 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 43,149 psi | 88% | 2552 fps | 96% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 41,959 psi | 85% | 2441 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 43,845 psi | 89% | 2520 fps | 96.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 44,034 psi | 89% | 2434 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 42,902 psi | 87% | 2428 fps | 99.8% |
| Somchem S321 | <<locked>> | 86% | 42,540 psi | 86% | 2497 fps | 97.7% |
| Somchem S335 | <<locked>> | 90% | 42,844 psi | 87% | 2434 fps | 99.7% |
| Somchem S341 | <<locked>> | 90% | 42,612 psi | 86% | 2487 fps | 95.9% |
| Somchem S355 | <<locked>> | 98% | 42,105 psi | 85% | 2507 fps | 96.6% |
| Vihtavuori N130 | <<locked>> | 86% | 44,237 psi | 90% | 2428 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 43,801 psi | 89% | 2438 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 42,511 psi | 86% | 2493 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 44,556 psi | 90% | 2507 fps | 99.7% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 43,381 psi | 88% | 2503 fps | 98.1% |
| Vihtavuori N530 | <<locked>> | 88% | 42,482 psi | 86% | 2467 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 94% | 42,960 psi | 87% | 2497 fps | 99.3% |
| Winchester 748 | <<locked>> | 90% | 43,656 psi | 89% | 2552 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 92% | 42,670 psi | 87% | 2520 fps | 96.8% |
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% | 33,518 psi | 68% | 2277 fps | 99.4% |
| Accurate 2460 | <<locked>> | 80% | 36,027 psi | 73% | 2352 fps | 98% |
| Accurate 2495 | <<locked>> | 80% | 25,512 psi | 52% | 2156 fps | 97.8% |
| Accurate 2520 | <<locked>> | 80% | 29,979 psi | 61% | 2267 fps | 95.5% |
| Accurate 4064 | <<locked>> | 82% | 26,020 psi | 53% | 2178 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 88% | 39,842 psi | 81% | 2451 fps | 95.3% |
| ADI AR 2219 | <<locked>> | 80% | 40,698 psi | 83% | 2457 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 82% | 34,896 psi | 71% | 2323 fps | 95.2% |
| Alliant AR-Comp | <<locked>> | 80% | 30,821 psi | 63% | 2297 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 37,304 psi | 76% | 2448 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 37,608 psi | 76% | 2411 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 36,506 psi | 74% | 2411 fps | 95.5% |
| Alliant Reloder-10x | <<locked>> | 80% | 38,595 psi | 78% | 2382 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 98% | 39,378 psi | 80% | 2520 fps | 95% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 40,973 psi | 83% | 2365 fps | 99.8% |
| Bofors RP3 | <<locked>> | 92% | 35,563 psi | 72% | 2405 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 35,215 psi | 71% | 2287 fps | 96% |
| Hodgdon BL-C2 | 42 gr | 82% | 32,256 psi | 65% | 2323 fps | 95% |
| Hodgdon CFE223 | <<locked>> | 86% | 41,452 psi | 84% | 2546 fps | 95% |
| Hodgdon H322 | <<locked>> | 80% | 37,159 psi | 75% | 2392 fps | 99.1% |
| Hodgdon H335 | <<locked>> | 80% | 37,608 psi | 76% | 2405 fps | 98.5% |
| Hodgdon H4895 | <<locked>> | 86% | 37,463 psi | 76% | 2408 fps | 95.3% |
| Hodgdon LEVERevolution | 44.2 gr | 88% | 35,853 psi | 73% | 2418 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 24,671 psi | 50% | 1398 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 39,088 psi | 79% | 2421 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 29,486 psi | 60% | 2277 fps | 98% |
| IMR 4198 | <<locked>> | 80% | 40,118 psi | 81% | 2365 fps | 100% |
| IMR 4895 | <<locked>> | 90% | 38,406 psi | 78% | 2457 fps | 95% |
| IMR 8208 XBR | <<locked>> | 82% | 34,896 psi | 71% | 2323 fps | 95.2% |
| Lovex D073.5 | <<locked>> | 80% | 35,839 psi | 73% | 2349 fps | 96.7% |
| Lovex D073.6 | <<locked>> | 82% | 30,182 psi | 61% | 2274 fps | 95.6% |
| Lovex S060 | <<locked>> | 86% | 38,899 psi | 79% | 2359 fps | 95% |
| Lovex S062 | <<locked>> | 88% | 34,751 psi | 70% | 2339 fps | 95.3% |
| Norma 201 | <<locked>> | 84% | 34,171 psi | 69% | 2310 fps | 95.1% |
| Norma 202 | <<locked>> | 80% | 29,863 psi | 61% | 2234 fps | 96.3% |
| Norma 203B | <<locked>> | 92% | 39,117 psi | 79% | 2461 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 88% | 41,162 psi | 83% | 2484 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 84% | 40,828 psi | 83% | 2418 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 24,555 psi | 50% | 1427 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 36,854 psi | 75% | 2365 fps | 97.4% |
| ReloadSwiss RS 60 | 46.4 gr | 92% | 34,679 psi | 70% | 2428 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 33,214 psi | 67% | 2274 fps | 97.1% |
| Rottweil R 902 | <<locked>> | 86% | 34,592 psi | 70% | 2313 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 96% | 38,087 psi | 77% | 2451 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 30,182 psi | 61% | 2274 fps | 95.6% |
| Shooters World Precision | <<locked>> | 88% | 34,751 psi | 70% | 2339 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 39,233 psi | 80% | 2375 fps | 96.1% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 41,191 psi | 84% | 2464 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 40,683 psi | 83% | 2507 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 39,392 psi | 80% | 2395 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 41,046 psi | 83% | 2470 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 32,242 psi | 65% | 2208 fps | 97% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 26,005 psi | 53% | 2077 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 34,606 psi | 70% | 2343 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 31,372 psi | 64% | 2208 fps | 97.6% |
| Somchem S341 | <<locked>> | 88% | 39,595 psi | 80% | 2431 fps | 95% |
| Somchem S355 | <<locked>> | 94% | 36,999 psi | 75% | 2408 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 36,811 psi | 75% | 2303 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 32,140 psi | 65% | 2221 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 80% | 27,006 psi | 55% | 2178 fps | 98.1% |
| Vihtavuori N140 | <<locked>> | 80% | 28,210 psi | 57% | 2175 fps | 96% |
| Vihtavuori N150 | <<locked>> | 92% | 33,098 psi | 67% | 2306 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 82% | 34,577 psi | 70% | 2313 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 82% | 28,950 psi | 59% | 2208 fps | 95.7% |
| Winchester 748 | <<locked>> | 82% | 33,344 psi | 68% | 2346 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 88% | 37,376 psi | 76% | 2418 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 66 powders for 8 x 56 R M 89 Port. Krop. loaded with the .323 | 179gr | CutEdge ESP Raptor. Hodgdon CFE223 delivers the highest muzzle velocity at 2,602 fps; across all powders the maximum-charge window runs from 1,565 fps to 2,602 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 66 of the 66 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 68–90 %, 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. Alliant Reloder-17, Hodgdon TrailBoss, ReloadSwiss RS 14 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 60, Hodgdon BL-C2, Hodgdon LEVERevolution rank at the top here: for 8 x 56 R M 89 Port. Krop. 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.