Load Specifications
Load data in caliber 8 x 57 IS with .323 | 187gr | RWS H-Mantel bullet and 85 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.
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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>> | 86% | 47,993 psi | 85% | 2500 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 49,356 psi | 87% | 2559 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 51,097 psi | 90% | 2595 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 48,820 psi | 86% | 2598 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 48,820 psi | 86% | 2598 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 51,010 psi | 90% | 2635 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 42,888 psi | 76% | 2566 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 90% | 50,169 psi | 89% | 2615 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 96% | 51,039 psi | 90% | 2608 fps | 98.3% |
| ADI Benchmark 8208 | <<locked>> | 88% | 49,559 psi | 88% | 2575 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 88% | 48,805 psi | 86% | 2569 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 50,749 psi | 90% | 2671 fps | 99.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 49,240 psi | 87% | 2703 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 96% | 49,806 psi | 88% | 2628 fps | 99.3% |
| Alliant Reloder-10x | <<locked>> | 84% | 51,082 psi | 90% | 2549 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 50,778 psi | 90% | 2648 fps | 98.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 43,613 psi | 77% | 2575 fps | 96.2% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 50,111 psi | 89% | 2723 fps | 99.2% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 50,140 psi | 89% | 2490 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 49,298 psi | 87% | 2618 fps | 97.7% |
| Bofors RP3 | <<locked>> | 96% | 49,777 psi | 88% | 2638 fps | 99.4% |
| Hodgdon Benchmark | <<locked>> | 86% | 48,747 psi | 86% | 2523 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 90% | 51,155 psi | 90% | 2651 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 86% | 49,298 psi | 87% | 2680 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 86% | 49,414 psi | 87% | 2572 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 50,517 psi | 89% | 2602 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 48,341 psi | 85% | 2595 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 90% | 50,546 psi | 89% | 2628 fps | 99.2% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,885 psi | 71% | 2470 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 48,602 psi | 86% | 2648 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,447 psi | 61% | 1585 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 50,734 psi | 90% | 2612 fps | 99.1% |
| IMR 3031 | <<locked>> | 94% | 50,778 psi | 90% | 2641 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 49,472 psi | 87% | 2579 fps | 98.2% |
| IMR 4198 | <<locked>> | 82% | 48,936 psi | 87% | 2477 fps | 100% |
| IMR 4895 | <<locked>> | 92% | 48,718 psi | 86% | 2625 fps | 98.6% |
| IMR 8208 XBR | <<locked>> | 88% | 49,559 psi | 88% | 2575 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 84% | 49,139 psi | 87% | 2562 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 90% | 48,501 psi | 86% | 2595 fps | 99.9% |
| Lovex S060 | <<locked>> | 90% | 50,778 psi | 90% | 2556 fps | 98.8% |
| Lovex S062 | <<locked>> | 94% | 49,661 psi | 88% | 2592 fps | 99.5% |
| Lovex S065ᴾ | <<locked>> | 100% | 48,950 psi | 87% | 2575 fps | 95.9% |
| Norma 201 | <<locked>> | 90% | 48,863 psi | 86% | 2566 fps | 99.4% |
| Norma 202 | <<locked>> | 90% | 49,182 psi | 87% | 2579 fps | 100% |
| Norma 203B | <<locked>> | 94% | 49,893 psi | 88% | 2635 fps | 98.8% |
| Norma URPᴾ | <<locked>> | 100% | 43,424 psi | 77% | 2566 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 94% | 50,082 psi | 89% | 2657 fps | 98.6% |
| Ramshot TAC | <<locked>> | 88% | 49,995 psi | 88% | 2582 fps | 96.4% |
| Ramshot Wild Boar | <<locked>> | 88% | 48,762 psi | 86% | 2602 fps | 98.5% |
| Ramshot X-Terminator | <<locked>> | 86% | 50,633 psi | 90% | 2575 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,592 psi | 61% | 1621 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 49,139 psi | 87% | 2566 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 50,009 psi | 88% | 2700 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 50,140 psi | 89% | 2736 fps | 100% |
| Rottweil R 901 | <<locked>> | 88% | 50,372 psi | 89% | 2566 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 49,371 psi | 87% | 2566 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 98% | 49,676 psi | 88% | 2628 fps | 99.2% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 48,950 psi | 87% | 2575 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 90% | 48,501 psi | 86% | 2595 fps | 99.9% |
| Shooters World Precision | <<locked>> | 94% | 49,661 psi | 88% | 2592 fps | 99.5% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 49,139 psi | 87% | 2536 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 48,443 psi | 86% | 2638 fps | 98.4% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 48,892 psi | 86% | 2523 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 51,111 psi | 90% | 2605 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 48,312 psi | 85% | 2582 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 48,298 psi | 85% | 2487 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 50,589 psi | 89% | 2523 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 50,285 psi | 89% | 2608 fps | 99.6% |
| Somchem S335 | <<locked>> | 90% | 50,140 psi | 89% | 2526 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 50,444 psi | 89% | 2602 fps | 98.7% |
| Somchem S355 | <<locked>> | 98% | 50,488 psi | 89% | 2628 fps | 99.1% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,624 psi | 68% | 2513 fps | 98.2% |
| Unknown powderᴾ | <<locked>> | 100% | 47,790 psi | 84% | 2625 fps | 96.4% |
| Vihtavuori N130 | <<locked>> | 86% | 51,068 psi | 90% | 2503 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 48,298 psi | 85% | 2480 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 48,211 psi | 85% | 2546 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 49,545 psi | 88% | 2559 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 48,776 psi | 86% | 2569 fps | 99.6% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 45,832 psi | 81% | 2569 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 88% | 49,864 psi | 88% | 2575 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 94% | 50,923 psi | 90% | 2598 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 44,875 psi | 79% | 2572 fps | 96.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 47,326 psi | 84% | 2562 fps | 98.7% |
| Winchester 748 | <<locked>> | 86% | 49,313 psi | 87% | 2628 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 49,284 psi | 87% | 2615 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% | 39,987 psi | 71% | 2372 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 43,308 psi | 77% | 2464 fps | 99.8% |
| Accurate 2495 | <<locked>> | 80% | 32,358 psi | 57% | 2280 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 37,086 psi | 66% | 2395 fps | 98.7% |
| Accurate 2520 | <<locked>> | 80% | 37,086 psi | 66% | 2395 fps | 98.7% |
| Accurate 4064 | <<locked>> | 80% | 30,632 psi | 54% | 2260 fps | 98.1% |
| Accurate 4350 | <<locked>> | 98% | 40,161 psi | 71% | 2516 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 36,579 psi | 65% | 2365 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 86% | 37,637 psi | 67% | 2369 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,522 psi | 68% | 2382 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 80% | 37,188 psi | 66% | 2392 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,367 psi | 78% | 2562 fps | 98.3% |
| Alliant Power Pro 2000-MR | 48.9 gr | 86% | 40,103 psi | 71% | 2526 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 32,068 psi | 57% | 2290 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,252 psi | 80% | 2464 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 37,130 psi | 66% | 2398 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 98% | 41,147 psi | 73% | 2526 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 90% | 36,085 psi | 64% | 2448 fps | 95.6% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 47,224 psi | 83% | 2448 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 40,509 psi | 72% | 2464 fps | 95.6% |
| Bofors RP3 | <<locked>> | 82% | 31,372 psi | 55% | 2287 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,785 psi | 72% | 2385 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,448 psi | 64% | 2392 fps | 97.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 40,074 psi | 71% | 2510 fps | 96.1% |
| Hodgdon H322 | <<locked>> | 80% | 40,814 psi | 72% | 2434 fps | 99.9% |
| Hodgdon H335 | <<locked>> | 80% | 47,050 psi | 83% | 2549 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 42,395 psi | 75% | 2490 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 36,782 psi | 65% | 2375 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 35,201 psi | 62% | 2372 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 33,185 psi | 59% | 2346 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,570 psi | 45% | 1414 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 35,114 psi | 62% | 2326 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 32,489 psi | 57% | 2320 fps | 99.5% |
| IMR 4064 | <<locked>> | 86% | 36,753 psi | 65% | 2346 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 46,021 psi | 81% | 2434 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 35,534 psi | 63% | 2375 fps | 95.4% |
| IMR 8208 XBR | <<locked>> | 80% | 38,522 psi | 68% | 2382 fps | 97.6% |
| Lovex D073.5 | <<locked>> | 80% | 42,830 psi | 76% | 2461 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 80% | 34,650 psi | 61% | 2346 fps | 98.2% |
| Lovex S060 | <<locked>> | 80% | 37,637 psi | 67% | 2323 fps | 96% |
| Lovex S062 | <<locked>> | 80% | 32,416 psi | 57% | 2267 fps | 95.8% |
| Lovex S065 | <<locked>> | 98% | 45,919 psi | 81% | 2526 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 35,911 psi | 63% | 2329 fps | 96.9% |
| Norma 202 | <<locked>> | 80% | 35,781 psi | 63% | 2343 fps | 99% |
| Norma 203B | <<locked>> | 84% | 36,448 psi | 64% | 2388 fps | 95.7% |
| Norma URP | <<locked>> | 98% | 40,886 psi | 72% | 2516 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 84% | 35,969 psi | 64% | 2395 fps | 95.1% |
| Ramshot TAC | <<locked>> | 86% | 46,717 psi | 83% | 2530 fps | 95.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,507 psi | 66% | 2395 fps | 95.9% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,785 psi | 74% | 2425 fps | 96.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,802 psi | 46% | 1450 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,395 psi | 77% | 2470 fps | 99.4% |
| ReloadSwiss RS 52 | 46.3 gr | 84% | 38,189 psi | 68% | 2484 fps | 95.5% |
| ReloadSwiss RS 60 | 45.9 gr | 82% | 29,718 psi | 53% | 2293 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 39,653 psi | 70% | 2382 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 34,185 psi | 60% | 2283 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 86% | 33,475 psi | 59% | 2329 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 98% | 45,919 psi | 81% | 2526 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 34,650 psi | 61% | 2346 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 32,416 psi | 57% | 2267 fps | 95.8% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,759 psi | 81% | 2480 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 37,304 psi | 66% | 2428 fps | 95.7% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,919 psi | 81% | 2480 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 44,585 psi | 79% | 2503 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 35,128 psi | 62% | 2333 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 37,652 psi | 67% | 2306 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 30,792 psi | 54% | 2178 fps | 98.6% |
| Somchem S321 | <<locked>> | 80% | 41,249 psi | 73% | 2457 fps | 98.4% |
| Somchem S335 | <<locked>> | 80% | 37,115 psi | 66% | 2310 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 36,056 psi | 64% | 2346 fps | 95.3% |
| Somchem S355 | <<locked>> | 86% | 34,722 psi | 61% | 2339 fps | 95.6% |
| Somchem S365 | <<locked>> | 94% | 32,010 psi | 57% | 2359 fps | 95.8% |
| Unknown powder | <<locked>> | 98% | 45,063 psi | 80% | 2579 fps | 95.7% |
| Vihtavuori N130 | <<locked>> | 80% | 42,743 psi | 76% | 2382 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 37,710 psi | 67% | 2310 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 32,880 psi | 58% | 2283 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 33,968 psi | 60% | 2287 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 82% | 29,037 psi | 51% | 2188 fps | 95% |
| Vihtavuori N160 | <<locked>> | 96% | 40,466 psi | 72% | 2470 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 38,435 psi | 68% | 2379 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 80% | 32,634 psi | 58% | 2274 fps | 98.1% |
| Vihtavuori N550 | <<locked>> | 98% | 42,018 psi | 74% | 2523 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 36,390 psi | 64% | 2359 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 40,147 psi | 71% | 2470 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,772 psi | 76% | 2507 fps | 98% |
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 105 powders for 8 x 57 IS loaded with the .323 | 187gr | RWS H-Mantel. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,736 fps; across all powders the maximum-charge window runs from 1,585 fps to 2,736 fps. Accurate 4350 gives the best case fill at 100 %, and 105 of the 105 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 187.0 gr projectile in 0.323" calls for a 1:15.5 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 60, ReloadSwiss RS 52 rank at the top here: for 8 x 57 IS with the .323 | 187gr | RWS H-Mantel 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.