Load Specifications
Load data in caliber 7 x 57 R with .284 | 185gr | Nosler RDF bullet and 50 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% | 43,439 psi | 88% | 2323 fps | 98.1% |
| Accurate 4064 | <<locked>> | 82% | 44,309 psi | 90% | 2264 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 43,004 psi | 87% | 2326 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 82% | 42,641 psi | 86% | 2241 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 42,612 psi | 86% | 2264 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 42,293 psi | 86% | 2336 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 86% | 42,061 psi | 85% | 2352 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,220 psi | 84% | 2346 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 36,303 psi | 74% | 2264 fps | 96.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 43,120 psi | 87% | 2448 fps | 99.3% |
| Bofors RP3 | <<locked>> | 82% | 42,525 psi | 86% | 2270 fps | 100% |
| Bofors RP7 | <<locked>> | 86% | 42,902 psi | 87% | 2247 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 82% | 43,250 psi | 88% | 2280 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 88% | 42,873 psi | 87% | 2326 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 86% | 43,729 psi | 89% | 2293 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 44,251 psi | 90% | 2320 fps | 100% |
| Hodgdon Superformance | <<locked>> | 88% | 42,221 psi | 86% | 2339 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,882 psi | 73% | 1453 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 43,163 psi | 88% | 2274 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,959 psi | 85% | 2231 fps | 96.6% |
| IMR 4831 | <<locked>> | 92% | 44,179 psi | 90% | 2329 fps | 99.4% |
| Lovex S065 | <<locked>> | 88% | 44,266 psi | 90% | 2277 fps | 98.4% |
| Lovex S070 | <<locked>> | 88% | 42,076 psi | 85% | 2257 fps | 97% |
| Lovex S071ᴾ | <<locked>> | 100% | 36,187 psi | 73% | 2198 fps | 96.3% |
| Norma MRP | <<locked>> | 98% | 43,120 psi | 87% | 2408 fps | 97% |
| Norma URP | <<locked>> | 90% | 42,902 psi | 87% | 2323 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 92% | 44,614 psi | 90% | 2365 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,463 psi | 74% | 1490 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,308 psi | 88% | 2260 fps | 97.6% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 41,989 psi | 85% | 2356 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 42,554 psi | 86% | 2346 fps | 99% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 42,148 psi | 85% | 2359 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 84% | 42,728 psi | 87% | 2270 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 86% | 42,902 psi | 87% | 2247 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 44,266 psi | 90% | 2277 fps | 98.4% |
| Shooters World SW4350 | <<locked>> | 88% | 42,076 psi | 85% | 2257 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 43,743 psi | 89% | 2316 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 42,221 psi | 86% | 2156 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,656 psi | 89% | 2228 fps | 97.1% |
| Somchem S355 | <<locked>> | 84% | 43,076 psi | 87% | 2267 fps | 99.9% |
| Somchem S365 | <<locked>> | 94% | 43,888 psi | 89% | 2372 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 43,613 psi | 88% | 2320 fps | 96.6% |
| Vihtavuori N150 | <<locked>> | 86% | 43,845 psi | 89% | 2251 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 41,872 psi | 85% | 2274 fps | 98.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 42,772 psi | 87% | 2293 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 90% | 44,005 psi | 89% | 2326 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 98% | 42,612 psi | 86% | 2365 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 44,440 psi | 90% | 2300 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 42,873 psi | 87% | 2326 fps | 97.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,825 psi | 75% | 2372 fps | 100% |
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>> | 92% | 33,083 psi | 67% | 2136 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 41,524 psi | 84% | 2221 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,690 psi | 62% | 2093 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 80% | 39,987 psi | 81% | 2195 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,914 psi | 81% | 2218 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,154 psi | 63% | 2103 fps | 96.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,432 psi | 70% | 2208 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 84% | 25,324 psi | 51% | 1982 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 98% | 34,374 psi | 70% | 2218 fps | 95.8% |
| Alliant Reloder-26 | 42.1 gr | 88% | 30,603 psi | 62% | 2175 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 39,827 psi | 81% | 2228 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 40,524 psi | 82% | 2205 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 40,567 psi | 82% | 2234 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 84% | 37,391 psi | 76% | 2224 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 84% | 41,060 psi | 83% | 2247 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,485 psi | 58% | 2014 fps | 97.1% |
| Hodgdon Superformance | <<locked>> | 86% | 39,334 psi | 80% | 2287 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,760 psi | 54% | 1296 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 40,524 psi | 82% | 2228 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 37,260 psi | 76% | 2142 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 29,965 psi | 61% | 2060 fps | 96% |
| Lovex S065 | <<locked>> | 80% | 34,650 psi | 70% | 2100 fps | 96% |
| Lovex S070 | <<locked>> | 84% | 37,347 psi | 76% | 2172 fps | 95.7% |
| Lovex S071 | <<locked>> | 98% | 33,852 psi | 69% | 2152 fps | 95.4% |
| Norma MRP | <<locked>> | 94% | 37,681 psi | 76% | 2300 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 31,067 psi | 63% | 2093 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 84% | 34,432 psi | 70% | 2172 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,079 psi | 55% | 1325 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,683 psi | 83% | 2215 fps | 97% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,637 psi | 74% | 2257 fps | 100% |
| ReloadSwiss RS 62 | 37.3 gr | 80% | 30,400 psi | 62% | 2106 fps | 95.6% |
| ReloadSwiss RS 70 | 38.9 gr | 82% | 32,547 psi | 66% | 2159 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 37,434 psi | 76% | 2178 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 40,524 psi | 82% | 2205 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,650 psi | 70% | 2100 fps | 96% |
| Shooters World SW4350 | <<locked>> | 84% | 37,347 psi | 76% | 2172 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,174 psi | 77% | 2221 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,494 psi | 80% | 2113 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 36,187 psi | 73% | 2096 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 38,145 psi | 77% | 2182 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 27,876 psi | 57% | 2057 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 38,334 psi | 78% | 2228 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 36,274 psi | 74% | 2126 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 32,401 psi | 66% | 2093 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 98% | 40,103 psi | 81% | 2247 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 31,952 psi | 65% | 2096 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 27,122 psi | 55% | 2047 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,995 psi | 65% | 2073 fps | 98.4% |
| Winchester 760 | <<locked>> | 84% | 37,666 psi | 76% | 2231 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 88% | 25,251 psi | 51% | 2047 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 50 powders for 7 x 57 R loaded with the .284 | 185gr | Nosler RDF. Alliant Reloder-26 delivers the highest muzzle velocity at 2,448 fps; across all powders the maximum-charge window runs from 1,453 fps to 2,448 fps. Accurate 3100 gives the best case fill at 100 %, and 50 of the 50 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 185.0 gr projectile in 0.284" calls for a 1:9.0 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 | 185gr | Nosler RDF 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.