Load Specifications
Load data in caliber 7 x 57 R with .284 | 173gr | RWS H-Mantel bullet and 48 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 and ReloadSwiss RS 62.
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 3100ᴾ | <<locked>> | 100% | 43,468 psi | 88% | 2418 fps | 97.7% |
| Accurate 4064 | <<locked>> | 82% | 44,295 psi | 90% | 2362 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 43,192 psi | 88% | 2428 fps | 99% |
| ADI AR 2208 | <<locked>> | 82% | 42,699 psi | 87% | 2339 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 42,598 psi | 86% | 2359 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 90% | 42,322 psi | 86% | 2434 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 86% | 42,250 psi | 86% | 2454 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,437 psi | 84% | 2444 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 36,361 psi | 74% | 2352 fps | 96.1% |
| Alliant Reloder-26 | <<locked>> | 98% | 43,091 psi | 87% | 2543 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 42,293 psi | 86% | 2365 fps | 99.9% |
| Bofors RP7 | <<locked>> | 86% | 43,149 psi | 88% | 2346 fps | 96% |
| Hodgdon H380 | <<locked>> | 82% | 43,279 psi | 88% | 2375 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 88% | 42,728 psi | 87% | 2418 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 44,396 psi | 90% | 2421 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,897 psi | 73% | 1529 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 43,352 psi | 88% | 2372 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,570 psi | 90% | 2372 fps | 96.8% |
| IMR 4831 | <<locked>> | 92% | 44,237 psi | 90% | 2428 fps | 99.2% |
| Lovex S065 | <<locked>> | 88% | 44,150 psi | 90% | 2369 fps | 98.1% |
| Lovex S070 | <<locked>> | 88% | 42,177 psi | 86% | 2356 fps | 96.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 36,056 psi | 73% | 2283 fps | 95.7% |
| Norma MRP | <<locked>> | 98% | 43,294 psi | 88% | 2507 fps | 96.6% |
| Norma URP | <<locked>> | 90% | 42,830 psi | 87% | 2418 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 82% | 44,614 psi | 90% | 2425 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 92% | 44,425 psi | 90% | 2457 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,434 psi | 74% | 1565 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,511 psi | 88% | 2359 fps | 97.3% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 42,003 psi | 85% | 2454 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 42,685 psi | 87% | 2444 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 42,482 psi | 86% | 2461 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 84% | 42,496 psi | 86% | 2362 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 86% | 43,149 psi | 88% | 2346 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 88% | 44,150 psi | 90% | 2369 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 88% | 42,177 psi | 86% | 2356 fps | 96.6% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 43,845 psi | 89% | 2415 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 42,090 psi | 85% | 2251 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,729 psi | 89% | 2323 fps | 96.7% |
| Somchem S355 | <<locked>> | 84% | 43,221 psi | 88% | 2365 fps | 99.8% |
| Somchem S365 | <<locked>> | 94% | 43,801 psi | 89% | 2470 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 43,569 psi | 88% | 2415 fps | 96.1% |
| Vihtavuori N150 | <<locked>> | 86% | 44,106 psi | 89% | 2352 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 41,887 psi | 85% | 2369 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 90% | 44,019 psi | 89% | 2421 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 98% | 42,960 psi | 87% | 2467 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 44,440 psi | 90% | 2398 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 43,004 psi | 87% | 2425 fps | 96.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,941 psi | 75% | 2464 fps | 99.9% |
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 3100 | <<locked>> | 94% | 35,563 psi | 72% | 2274 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 41,684 psi | 85% | 2323 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,705 psi | 62% | 2175 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 40,176 psi | 81% | 2293 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,059 psi | 81% | 2316 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,053 psi | 63% | 2188 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,447 psi | 70% | 2297 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 86% | 26,948 psi | 55% | 2110 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 98% | 34,301 psi | 70% | 2303 fps | 95.2% |
| Alliant Reloder-26 | 45.6 gr | 90% | 32,808 psi | 67% | 2320 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 39,755 psi | 81% | 2320 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 40,364 psi | 82% | 2293 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 40,451 psi | 82% | 2326 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 37,565 psi | 76% | 2320 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,601 psi | 58% | 2103 fps | 96.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,731 psi | 54% | 1362 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 40,567 psi | 82% | 2323 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 82% | 39,624 psi | 80% | 2280 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 29,776 psi | 60% | 2139 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 34,766 psi | 71% | 2188 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 37,173 psi | 75% | 2257 fps | 95.1% |
| Lovex S071 | <<locked>> | 98% | 34,055 psi | 69% | 2244 fps | 95% |
| Norma MRP | <<locked>> | 96% | 40,466 psi | 82% | 2451 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 31,111 psi | 63% | 2178 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 41,713 psi | 85% | 2372 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 36,651 psi | 74% | 2310 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,006 psi | 55% | 1391 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,741 psi | 83% | 2310 fps | 96.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,666 psi | 74% | 2352 fps | 100% |
| ReloadSwiss RS 62 | 39.5 gr | 80% | 30,429 psi | 62% | 2188 fps | 95% |
| ReloadSwiss RS 70 | 42.1 gr | 84% | 34,577 psi | 70% | 2293 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,463 psi | 76% | 2274 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 40,364 psi | 82% | 2293 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,766 psi | 71% | 2188 fps | 95.5% |
| Shooters World SW4350 | <<locked>> | 84% | 37,173 psi | 75% | 2257 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,261 psi | 78% | 2316 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,566 psi | 80% | 2208 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 38,595 psi | 78% | 2231 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 38,218 psi | 78% | 2277 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 27,876 psi | 57% | 2139 fps | 97.8% |
| Somchem S385 | <<locked>> | 94% | 40,973 psi | 83% | 2365 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 36,361 psi | 74% | 2218 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 32,416 psi | 66% | 2178 fps | 96.1% |
| Vihtavuori N550 | <<locked>> | 80% | 31,850 psi | 65% | 2182 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 86% | 28,964 psi | 59% | 2178 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,908 psi | 65% | 2156 fps | 98% |
| Winchester 760 | <<locked>> | 84% | 37,565 psi | 76% | 2320 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 90% | 26,977 psi | 55% | 2182 fps | 96.1% |
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 48 powders for 7 x 57 R loaded with the .284 | 173gr | RWS H-Mantel. Alliant Reloder-26 delivers the highest muzzle velocity at 2,543 fps; across all powders the maximum-charge window runs from 1,529 fps to 2,543 fps. Accurate 3100 gives the best case fill at 100 %, and 48 of the 48 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 73–90 %, leaving at least 10 % headroom. The 173.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-25 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 Reloder-26, ReloadSwiss RS 70, ReloadSwiss RS 62 rank at the top here: for 7 x 57 R with the .284 | 173gr | RWS H-Mantel 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.