Load Specifications
Load data in caliber 8 x 57 IS with .323 | 180gr | RWS Speed Tip Professional 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 2000-MR, ReloadSwiss RS 52 and Hodgdon CFE223.
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>> | 90% | 50,836 psi | 90% | 2575 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 49,298 psi | 87% | 2592 fps | 99.9% |
| Accurate 2495 | <<locked>> | 96% | 50,212 psi | 89% | 2625 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 50,009 psi | 88% | 2641 fps | 99.9% |
| Accurate 4064 | <<locked>> | 98% | 49,806 psi | 88% | 2654 fps | 100% |
| Accurate LT-30 | <<locked>> | 82% | 48,631 psi | 86% | 2487 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 49,008 psi | 87% | 2503 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 92% | 49,661 psi | 88% | 2638 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 98% | 50,531 psi | 89% | 2628 fps | 97.5% |
| ADI AR 2219 | <<locked>> | 82% | 48,066 psi | 85% | 2589 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 49,385 psi | 87% | 2605 fps | 99% |
| Alliant AR-Comp | <<locked>> | 90% | 48,022 psi | 85% | 2602 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 50,183 psi | 89% | 2697 fps | 98.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 48,834 psi | 86% | 2720 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 49,298 psi | 87% | 2651 fps | 98.8% |
| Alliant Reloder-10x | <<locked>> | 86% | 50,894 psi | 90% | 2585 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 50,357 psi | 89% | 2671 fps | 97.8% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 46,644 psi | 82% | 2687 fps | 97.9% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 50,502 psi | 89% | 2530 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 48,994 psi | 87% | 2644 fps | 96.9% |
| Bofors RP3 | <<locked>> | 98% | 49,269 psi | 87% | 2664 fps | 98.9% |
| Hodgdon Benchmark | <<locked>> | 88% | 48,936 psi | 87% | 2556 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 92% | 50,633 psi | 90% | 2677 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 88% | 49,066 psi | 87% | 2707 fps | 97.5% |
| Hodgdon H322 | <<locked>> | 86% | 49,879 psi | 88% | 2618 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 50,894 psi | 90% | 2641 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 51,111 psi | 90% | 2667 fps | 96.6% |
| Hodgdon H4895 | <<locked>> | 92% | 50,038 psi | 88% | 2651 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 48,167 psi | 85% | 2671 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,953 psi | 60% | 1591 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 48,602 psi | 86% | 2608 fps | 98.3% |
| IMR 3031 | <<locked>> | 92% | 48,544 psi | 86% | 2648 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 50,038 psi | 88% | 2615 fps | 97.7% |
| IMR 4198 | <<locked>> | 84% | 49,023 psi | 87% | 2516 fps | 100% |
| IMR 4895 | <<locked>> | 94% | 48,472 psi | 86% | 2654 fps | 98% |
| IMR 8208 XBR | <<locked>> | 90% | 49,385 psi | 87% | 2605 fps | 99% |
| Lovex D073.5 | <<locked>> | 86% | 49,139 psi | 87% | 2595 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 92% | 48,138 psi | 85% | 2625 fps | 99.7% |
| Lovex S060 | <<locked>> | 92% | 50,560 psi | 89% | 2579 fps | 98.2% |
| Lovex S062 | <<locked>> | 96% | 49,501 psi | 88% | 2621 fps | 99.1% |
| Norma 200 | <<locked>> | 82% | 51,111 psi | 90% | 2566 fps | 100% |
| Norma 201 | <<locked>> | 92% | 48,646 psi | 86% | 2595 fps | 98.9% |
| Norma 202 | <<locked>> | 92% | 48,892 psi | 86% | 2608 fps | 100% |
| Norma 203B | <<locked>> | 96% | 49,414 psi | 87% | 2657 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 96% | 49,559 psi | 88% | 2677 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 90% | 48,675 psi | 86% | 2628 fps | 97.9% |
| Ramshot X-Terminator | <<locked>> | 88% | 50,720 psi | 90% | 2605 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,316 psi | 61% | 1634 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 49,197 psi | 87% | 2598 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 49,342 psi | 87% | 2720 fps | 97.6% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 49,835 psi | 88% | 2756 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 90% | 49,966 psi | 88% | 2592 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 94% | 48,863 psi | 86% | 2589 fps | 98.9% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 48,791 psi | 86% | 2648 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 48,138 psi | 85% | 2625 fps | 99.7% |
| Shooters World Precision | <<locked>> | 96% | 49,501 psi | 88% | 2621 fps | 99.1% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 49,081 psi | 87% | 2562 fps | 98.6% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 48,457 psi | 86% | 2595 fps | 99.9% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 50,908 psi | 90% | 2703 fps | 98.2% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 48,892 psi | 86% | 2562 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 50,952 psi | 90% | 2631 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 48,240 psi | 85% | 2612 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 48,182 psi | 85% | 2513 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 50,328 psi | 89% | 2552 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 50,169 psi | 89% | 2638 fps | 99.3% |
| Somchem S335 | <<locked>> | 92% | 50,009 psi | 88% | 2556 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 50,111 psi | 89% | 2628 fps | 98% |
| Somchem S355ᴾ | <<locked>> | 100% | 49,734 psi | 88% | 2648 fps | 98.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 35,795 psi | 63% | 2474 fps | 96.4% |
| Vihtavuori N130 | <<locked>> | 88% | 51,097 psi | 90% | 2539 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 51,039 psi | 90% | 2552 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 50,502 psi | 89% | 2618 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 49,023 psi | 87% | 2585 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 48,182 psi | 85% | 2592 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 90% | 49,734 psi | 88% | 2605 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 96% | 50,618 psi | 89% | 2628 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 44,150 psi | 78% | 2530 fps | 97.2% |
| Winchester 748 | <<locked>> | 90% | 48,399 psi | 86% | 2648 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 94% | 50,691 psi | 90% | 2667 fps | 98.7% |
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% | 37,376 psi | 66% | 2359 fps | 99.9% |
| Accurate 2460 | <<locked>> | 80% | 40,161 psi | 71% | 2441 fps | 99.1% |
| Accurate 2495 | <<locked>> | 80% | 29,776 psi | 53% | 2260 fps | 99.2% |
| Accurate 2520 | <<locked>> | 80% | 35,549 psi | 63% | 2388 fps | 97.9% |
| Accurate 4064 | <<locked>> | 80% | 28,210 psi | 50% | 2234 fps | 96.6% |
| Accurate LT-30 | <<locked>> | 80% | 45,716 psi | 81% | 2441 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 46,079 psi | 81% | 2454 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 38,740 psi | 68% | 2441 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 92% | 42,119 psi | 74% | 2487 fps | 95.6% |
| ADI AR 2219 | <<locked>> | 80% | 44,831 psi | 79% | 2539 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 36,230 psi | 64% | 2362 fps | 96.2% |
| Alliant AR-Comp | <<locked>> | 80% | 34,418 psi | 61% | 2379 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 41,452 psi | 73% | 2539 fps | 97.1% |
| Alliant Power Pro 2000-MR | 49.3 gr | 90% | 42,743 psi | 76% | 2602 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 33,663 psi | 60% | 2359 fps | 95% |
| Alliant Reloder-10x | <<locked>> | 80% | 42,351 psi | 75% | 2454 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 39,160 psi | 69% | 2470 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 94% | 38,189 psi | 68% | 2516 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 44,512 psi | 79% | 2438 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 42,946 psi | 76% | 2539 fps | 95.4% |
| Bofors RP3 | <<locked>> | 88% | 35,288 psi | 62% | 2408 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 38,334 psi | 68% | 2365 fps | 97.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 33,678 psi | 60% | 2362 fps | 96.1% |
| Hodgdon CFE223 | 46 gr | 82% | 39,900 psi | 71% | 2533 fps | 95.1% |
| Hodgdon H322 | <<locked>> | 80% | 40,959 psi | 72% | 2470 fps | 99.8% |
| Hodgdon H335 | <<locked>> | 80% | 41,626 psi | 74% | 2490 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 94% | 44,773 psi | 79% | 2562 fps | 95% |
| Hodgdon H4895 | <<locked>> | 82% | 36,651 psi | 65% | 2402 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 34,751 psi | 61% | 2408 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,309 psi | 45% | 1424 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 35,505 psi | 63% | 2362 fps | 95% |
| IMR 3031 | <<locked>> | 80% | 32,982 psi | 58% | 2365 fps | 99.2% |
| IMR 4064 | <<locked>> | 88% | 39,088 psi | 69% | 2421 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 43,453 psi | 77% | 2431 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 37,376 psi | 66% | 2448 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 36,230 psi | 64% | 2362 fps | 96.2% |
| Lovex D073.5 | <<locked>> | 80% | 40,059 psi | 71% | 2444 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 80% | 31,995 psi | 57% | 2320 fps | 96.8% |
| Lovex S060 | <<locked>> | 82% | 37,478 psi | 66% | 2343 fps | 95.1% |
| Lovex S062 | <<locked>> | 84% | 33,997 psi | 60% | 2333 fps | 95.6% |
| Norma 200 | <<locked>> | 80% | 48,008 psi | 85% | 2520 fps | 100% |
| Norma 201 | <<locked>> | 80% | 33,649 psi | 59% | 2306 fps | 95.4% |
| Norma 202 | <<locked>> | 80% | 33,388 psi | 59% | 2323 fps | 97.9% |
| Norma 203B | <<locked>> | 88% | 38,406 psi | 68% | 2461 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 90% | 40,654 psi | 72% | 2516 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 39,856 psi | 70% | 2470 fps | 95.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 39,204 psi | 69% | 2402 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,266 psi | 45% | 1457 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 40,669 psi | 72% | 2451 fps | 98.6% |
| ReloadSwiss RS 52 | 46.8 gr | 88% | 40,582 psi | 72% | 2562 fps | 95.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 31,589 psi | 56% | 2362 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 37,130 psi | 66% | 2365 fps | 98.5% |
| Rottweil R 902 | <<locked>> | 82% | 34,040 psi | 60% | 2310 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 90% | 35,186 psi | 62% | 2398 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 31,995 psi | 57% | 2320 fps | 96.8% |
| Shooters World Precision | <<locked>> | 84% | 33,997 psi | 60% | 2333 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 42,786 psi | 76% | 2457 fps | 97.5% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 45,324 psi | 80% | 2546 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 39,523 psi | 70% | 2503 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 43,018 psi | 76% | 2467 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 47,529 psi | 84% | 2579 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 37,260 psi | 66% | 2408 fps | 95% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 35,331 psi | 62% | 2287 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,718 psi | 51% | 2159 fps | 97.4% |
| Somchem S321 | <<locked>> | 80% | 38,421 psi | 68% | 2431 fps | 97.2% |
| Somchem S335 | <<locked>> | 80% | 34,867 psi | 62% | 2293 fps | 98.8% |
| Somchem S341 | <<locked>> | 84% | 38,319 psi | 68% | 2421 fps | 95.2% |
| Somchem S355 | <<locked>> | 90% | 36,506 psi | 65% | 2411 fps | 95.4% |
| Somchem S365 | <<locked>> | 98% | 33,518 psi | 59% | 2418 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 40,176 psi | 71% | 2372 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 35,288 psi | 62% | 2297 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 80% | 30,342 psi | 54% | 2260 fps | 99.3% |
| Vihtavuori N140 | <<locked>> | 80% | 31,473 psi | 56% | 2264 fps | 97.6% |
| Vihtavuori N150 | <<locked>> | 88% | 32,677 psi | 58% | 2306 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 35,868 psi | 63% | 2352 fps | 96.2% |
| Vihtavuori N540 | <<locked>> | 80% | 30,342 psi | 54% | 2251 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 38,783 psi | 69% | 2428 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 34,606 psi | 61% | 2385 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 36,376 psi | 64% | 2411 fps | 95.5% |
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 103 powders for 8 x 57 IS loaded with the .323 | 180gr | RWS Speed Tip Professional. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,756 fps; across all powders the maximum-charge window runs from 1,591 fps to 2,756 fps. Accurate 4350 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.323" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. 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 52, Hodgdon CFE223 rank at the top here: for 8 x 57 IS with the .323 | 180gr | RWS Speed Tip Professional they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 4350, Alliant Reloder-16 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.