Load Specifications
Load data in caliber 7 x 57 R with .284 | 180gr | Berger Hybrid Target bullet and 52 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% | 42,728 psi | 87% | 2346 fps | 97.7% |
| Accurate 4064 | <<locked>> | 82% | 43,729 psi | 89% | 2293 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 42,496 psi | 86% | 2356 fps | 99% |
| ADI AR 2208 | <<locked>> | 82% | 42,163 psi | 86% | 2267 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 42,090 psi | 85% | 2290 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 92% | 44,338 psi | 90% | 2408 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 88% | 44,396 psi | 90% | 2431 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,654 psi | 82% | 2372 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 36,085 psi | 73% | 2290 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 42,395 psi | 86% | 2467 fps | 98.9% |
| Bofors RP3 | <<locked>> | 82% | 41,887 psi | 85% | 2297 fps | 99.9% |
| Bofors RP7 | <<locked>> | 86% | 42,627 psi | 86% | 2277 fps | 96% |
| Hodgdon H380 | <<locked>> | 82% | 42,612 psi | 86% | 2303 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 88% | 42,134 psi | 85% | 2349 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 43,758 psi | 89% | 2349 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 88% | 41,698 psi | 85% | 2365 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,911 psi | 73% | 1480 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 44,324 psi | 90% | 2297 fps | 99.6% |
| IMR 4350 | <<locked>> | 90% | 42,757 psi | 87% | 2300 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,077 psi | 89% | 2300 fps | 96.9% |
| IMR 4831 | <<locked>> | 92% | 43,352 psi | 88% | 2352 fps | 99.2% |
| Lovex S062 | <<locked>> | 82% | 44,353 psi | 90% | 2297 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 43,642 psi | 89% | 2300 fps | 98.1% |
| Lovex S070 | <<locked>> | 90% | 44,440 psi | 90% | 2333 fps | 97.3% |
| Norma 203B | <<locked>> | 82% | 44,440 psi | 90% | 2336 fps | 99.8% |
| Norma MRP | <<locked>> | 98% | 42,482 psi | 86% | 2431 fps | 96.5% |
| Norma URP | <<locked>> | 90% | 42,453 psi | 86% | 2352 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 82% | 44,150 psi | 90% | 2352 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 92% | 43,801 psi | 89% | 2388 fps | 97.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,448 psi | 74% | 1516 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,989 psi | 87% | 2290 fps | 97.3% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 44,367 psi | 90% | 2431 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 41,945 psi | 85% | 2372 fps | 98.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 41,669 psi | 85% | 2385 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 84% | 42,076 psi | 85% | 2297 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 86% | 42,627 psi | 86% | 2277 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 88% | 43,642 psi | 89% | 2300 fps | 98.1% |
| Shooters World Precision | <<locked>> | 82% | 44,353 psi | 90% | 2297 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 44,440 psi | 90% | 2333 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 43,076 psi | 87% | 2343 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 44,251 psi | 90% | 2221 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,294 psi | 88% | 2257 fps | 96.8% |
| Somchem S355 | <<locked>> | 84% | 42,772 psi | 87% | 2297 fps | 99.8% |
| Somchem S365 | <<locked>> | 94% | 43,294 psi | 88% | 2402 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 43,018 psi | 87% | 2346 fps | 96.1% |
| Vihtavuori N150 | <<locked>> | 86% | 43,526 psi | 88% | 2280 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 44,251 psi | 90% | 2346 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 90% | 43,540 psi | 88% | 2352 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 98% | 41,989 psi | 85% | 2392 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 43,932 psi | 89% | 2326 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 42,424 psi | 86% | 2352 fps | 96.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,550 psi | 74% | 2398 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% | 34,911 psi | 71% | 2205 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 41,002 psi | 83% | 2251 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,211 psi | 61% | 2113 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 39,552 psi | 80% | 2221 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,479 psi | 80% | 2244 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,777 psi | 62% | 2126 fps | 95.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,171 psi | 69% | 2234 fps | 98.8% |
| Alliant Reloder-23 | <<locked>> | 86% | 26,716 psi | 54% | 2054 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 98% | 33,939 psi | 69% | 2241 fps | 95.2% |
| Alliant Reloder-26 | 43.5 gr | 90% | 32,184 psi | 65% | 2247 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 39,262 psi | 80% | 2254 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 40,045 psi | 81% | 2228 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 40,001 psi | 81% | 2257 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 37,072 psi | 75% | 2251 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,137 psi | 57% | 2037 fps | 96.7% |
| Hodgdon Superformance | <<locked>> | 86% | 38,899 psi | 79% | 2310 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,600 psi | 54% | 1316 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,568 psi | 84% | 2251 fps | 99.3% |
| IMR 4350 | <<locked>> | 88% | 40,190 psi | 82% | 2257 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 39,218 psi | 80% | 2215 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 29,501 psi | 60% | 2080 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 41,655 psi | 84% | 2254 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 34,243 psi | 69% | 2123 fps | 95.5% |
| Lovex S070 | <<locked>> | 84% | 36,854 psi | 75% | 2195 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 41,698 psi | 85% | 2290 fps | 99.6% |
| Norma MRP | <<locked>> | 96% | 39,885 psi | 81% | 2379 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 30,632 psi | 62% | 2116 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 41,133 psi | 83% | 2303 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 36,347 psi | 74% | 2247 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,180 psi | 55% | 1352 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,147 psi | 81% | 2241 fps | 96.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,347 psi | 74% | 2287 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 29,936 psi | 61% | 2126 fps | 95.1% |
| ReloadSwiss RS 70 | 39.3 gr | 82% | 32,039 psi | 65% | 2175 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 36,912 psi | 75% | 2205 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 40,045 psi | 81% | 2228 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,243 psi | 69% | 2123 fps | 95.5% |
| Shooters World Precision | <<locked>> | 80% | 41,655 psi | 84% | 2254 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 36,854 psi | 75% | 2195 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,913 psi | 77% | 2251 fps | 99% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,117 psi | 79% | 2142 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 38,101 psi | 77% | 2165 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 37,666 psi | 76% | 2208 fps | 99.3% |
| Somchem S365 | 35.8 gr | 80% | 27,470 psi | 56% | 2077 fps | 97.9% |
| Somchem S385 | <<locked>> | 94% | 40,364 psi | 82% | 2297 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 35,853 psi | 73% | 2152 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 31,952 psi | 65% | 2116 fps | 96.1% |
| Vihtavuori N550 | <<locked>> | 80% | 31,473 psi | 64% | 2119 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 86% | 28,485 psi | 58% | 2113 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,546 psi | 64% | 2093 fps | 98.1% |
| Winchester 760 | <<locked>> | 84% | 37,072 psi | 75% | 2251 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 90% | 26,513 psi | 54% | 2116 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 52 powders for 7 x 57 R loaded with the .284 | 180gr | Berger Hybrid Target. Alliant Reloder-26 delivers the highest muzzle velocity at 2,467 fps; across all powders the maximum-charge window runs from 1,480 fps to 2,467 fps. Accurate 3100 gives the best case fill at 100 %, and 52 of the 52 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 180.0 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, Somchem S365 rank at the top here: for 7 x 57 R with the .284 | 180gr | Berger Hybrid Target 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.