Load Specifications
Load data in caliber 7 x 57 R with .284 | 175gr | Barnes Solid RN bullet and 53 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 Somchem S365.
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% | 43,062 psi | 87% | 2392 fps | 97.6% |
| Accurate 4064 | <<locked>> | 82% | 43,816 psi | 89% | 2336 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 42,873 psi | 87% | 2402 fps | 99% |
| ADI AR 2208 | <<locked>> | 82% | 42,250 psi | 86% | 2310 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 42,090 psi | 85% | 2333 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 90% | 41,989 psi | 85% | 2408 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 86% | 41,945 psi | 85% | 2431 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,031 psi | 83% | 2418 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 36,071 psi | 73% | 2326 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 98% | 42,801 psi | 87% | 2516 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 42,192 psi | 86% | 2343 fps | 99.9% |
| Bofors RP7 | <<locked>> | 86% | 42,830 psi | 87% | 2320 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 82% | 42,888 psi | 87% | 2349 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 86% | 43,337 psi | 88% | 2411 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 44,092 psi | 89% | 2395 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 43,714 psi | 89% | 2392 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,795 psi | 73% | 1509 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 44,092 psi | 89% | 2333 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 84% | 43,656 psi | 89% | 2306 fps | 96.7% |
| IMR 4350 | <<locked>> | 90% | 42,815 psi | 87% | 2343 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,266 psi | 90% | 2346 fps | 96.7% |
| IMR 4831 | <<locked>> | 96% | 44,585 psi | 90% | 2415 fps | 99.3% |
| Lovex S062 | <<locked>> | 82% | 44,440 psi | 90% | 2343 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 44,092 psi | 89% | 2349 fps | 98.1% |
| Lovex S070 | <<locked>> | 90% | 44,483 psi | 90% | 2375 fps | 97.2% |
| Norma MRP | <<locked>> | 98% | 42,685 psi | 87% | 2474 fps | 96.4% |
| Norma URP | <<locked>> | 90% | 42,525 psi | 86% | 2395 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 82% | 44,280 psi | 90% | 2398 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 92% | 44,237 psi | 90% | 2434 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,332 psi | 74% | 1545 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,192 psi | 88% | 2333 fps | 97.2% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 41,684 psi | 85% | 2431 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 42,467 psi | 86% | 2421 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 42,061 psi | 85% | 2434 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 84% | 42,366 psi | 86% | 2343 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 86% | 42,830 psi | 87% | 2320 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 88% | 44,092 psi | 89% | 2349 fps | 98.1% |
| Shooters World Precision | <<locked>> | 82% | 44,440 psi | 90% | 2343 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 44,483 psi | 90% | 2375 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 43,497 psi | 88% | 2392 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 41,916 psi | 85% | 2228 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,395 psi | 88% | 2300 fps | 96.7% |
| Somchem S355 | <<locked>> | 84% | 42,772 psi | 87% | 2339 fps | 99.8% |
| Somchem S365 | <<locked>> | 94% | 43,569 psi | 88% | 2448 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 43,105 psi | 87% | 2385 fps | 96% |
| Unknown powder | <<locked>> | 88% | 43,192 psi | 88% | 2395 fps | 98.5% |
| Vihtavuori N150 | <<locked>> | 86% | 43,714 psi | 89% | 2326 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 44,585 psi | 90% | 2395 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 90% | 43,758 psi | 89% | 2398 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 98% | 42,467 psi | 86% | 2441 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 44,019 psi | 89% | 2372 fps | 99.9% |
| Winchester 760 | <<locked>> | 86% | 43,337 psi | 88% | 2411 fps | 96.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,651 psi | 74% | 2438 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% | 35,099 psi | 71% | 2247 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 41,118 psi | 83% | 2293 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,284 psi | 61% | 2149 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 39,740 psi | 81% | 2267 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,595 psi | 80% | 2287 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,893 psi | 63% | 2165 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,142 psi | 69% | 2270 fps | 98.6% |
| Alliant Reloder-23 | <<locked>> | 86% | 26,687 psi | 54% | 2087 fps | 95.4% |
| Alliant Reloder-25 | <<locked>> | 98% | 33,968 psi | 69% | 2277 fps | 95% |
| Alliant Reloder-26 | 44.8 gr | 90% | 32,430 psi | 66% | 2290 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 39,305 psi | 80% | 2293 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 40,277 psi | 82% | 2274 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 40,001 psi | 81% | 2297 fps | 98% |
| Hodgdon H414 | <<locked>> | 82% | 37,753 psi | 77% | 2306 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,253 psi | 57% | 2077 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,756 psi | 83% | 2343 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,745 psi | 54% | 1348 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,175 psi | 79% | 2247 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 38,928 psi | 79% | 2218 fps | 95.3% |
| IMR 4350 | <<locked>> | 88% | 40,292 psi | 82% | 2297 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 82% | 39,218 psi | 80% | 2254 fps | 95.3% |
| IMR 4831 | <<locked>> | 84% | 30,472 psi | 62% | 2139 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 41,785 psi | 85% | 2297 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 34,360 psi | 70% | 2162 fps | 95.4% |
| Lovex S070 | <<locked>> | 84% | 37,072 psi | 75% | 2238 fps | 95.1% |
| Norma MRP | <<locked>> | 96% | 40,147 psi | 81% | 2425 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 30,705 psi | 62% | 2152 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 41,336 psi | 84% | 2349 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 36,405 psi | 74% | 2287 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,035 psi | 55% | 1378 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,379 psi | 82% | 2283 fps | 96.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,318 psi | 74% | 2326 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 32,285 psi | 65% | 2218 fps | 95.9% |
| ReloadSwiss RS 70 | 41.4 gr | 84% | 34,345 psi | 70% | 2270 fps | 95.8% |
| Rottweil R 903 | <<locked>> | 80% | 37,028 psi | 75% | 2244 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 84% | 40,277 psi | 82% | 2274 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,360 psi | 70% | 2162 fps | 95.4% |
| Shooters World Precision | <<locked>> | 80% | 41,785 psi | 85% | 2297 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 37,072 psi | 75% | 2238 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,884 psi | 77% | 2290 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,334 psi | 80% | 2185 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 38,290 psi | 78% | 2208 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 37,782 psi | 77% | 2247 fps | 99.2% |
| Somchem S365 | 36.8 gr | 80% | 27,557 psi | 56% | 2113 fps | 97.7% |
| Somchem S385 | <<locked>> | 94% | 40,495 psi | 82% | 2339 fps | 95.2% |
| Unknown powder | <<locked>> | 80% | 33,330 psi | 68% | 2201 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 35,926 psi | 73% | 2192 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 32,024 psi | 65% | 2156 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 31,517 psi | 64% | 2156 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 86% | 28,645 psi | 58% | 2152 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,865 psi | 65% | 2139 fps | 98% |
| Winchester 760 | <<locked>> | 82% | 37,753 psi | 77% | 2306 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 26,672 psi | 54% | 2156 fps | 95.9% |
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 53 powders for 7 x 57 R loaded with the .284 | 175gr | Barnes Solid RN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,516 fps; across all powders the maximum-charge window runs from 1,509 fps to 2,516 fps. Accurate 3100 gives the best case fill at 100 %, and 53 of the 53 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 175.0 gr projectile in 0.284" calls for a 1:10.5 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, Somchem S365 rank at the top here: for 7 x 57 R with the .284 | 175gr | Barnes Solid RN 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.