Load Specifications
Load data in caliber 7 x 57 R with .284 | 160gr | Nosler Partition Gold bullet and 47 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, Alliant Reloder-26 and Alliant Reloder-16.
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% | 41,133 psi | 83% | 2474 fps | 96.3% |
| Accurate 4064 | <<locked>> | 82% | 42,293 psi | 86% | 2434 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 43,932 psi | 89% | 2539 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 84% | 43,526 psi | 88% | 2451 fps | 98.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 44,019 psi | 89% | 2582 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 43,250 psi | 88% | 2474 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 82% | 43,555 psi | 88% | 2484 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 92% | 42,989 psi | 87% | 2543 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 88% | 43,004 psi | 87% | 2569 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,479 psi | 80% | 2503 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,888 psi | 89% | 2651 fps | 98.4% |
| Bofors RP3 | <<locked>> | 84% | 43,149 psi | 88% | 2480 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 84% | 44,150 psi | 90% | 2487 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 90% | 43,511 psi | 88% | 2530 fps | 96% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 42,235 psi | 86% | 2484 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,563 psi | 72% | 1591 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 43,105 psi | 87% | 2434 fps | 98.9% |
| IMR 4831 | <<locked>> | 92% | 42,032 psi | 85% | 2490 fps | 98.3% |
| Lovex S062 | <<locked>> | 82% | 43,091 psi | 87% | 2438 fps | 99.8% |
| Lovex S065 | <<locked>> | 88% | 42,424 psi | 86% | 2434 fps | 97% |
| Lovex S070 | <<locked>> | 90% | 42,859 psi | 87% | 2461 fps | 95.9% |
| Norma 203B | <<locked>> | 82% | 42,931 psi | 87% | 2474 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 43,656 psi | 89% | 2533 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 82% | 42,641 psi | 86% | 2490 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 92% | 42,525 psi | 86% | 2520 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,027 psi | 73% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 44,367 psi | 90% | 2470 fps | 96.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 42,917 psi | 87% | 2572 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 43,453 psi | 88% | 2556 fps | 98.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 43,163 psi | 88% | 2569 fps | 97.8% |
| Rottweil R 903 | <<locked>> | 86% | 43,294 psi | 88% | 2477 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 42,424 psi | 86% | 2434 fps | 97% |
| Shooters World Precision | <<locked>> | 82% | 43,091 psi | 87% | 2438 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 90% | 42,859 psi | 87% | 2461 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 44,541 psi | 90% | 2530 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 43,120 psi | 87% | 2365 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 44,092 psi | 89% | 2480 fps | 99.6% |
| Somchem S365 | <<locked>> | 96% | 44,396 psi | 90% | 2585 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 44,556 psi | 90% | 2428 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 42,047 psi | 85% | 2418 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 90% | 42,786 psi | 87% | 2480 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 82% | 43,424 psi | 88% | 2431 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 41,945 psi | 85% | 2484 fps | 97.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,250 psi | 88% | 2575 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 42,670 psi | 87% | 2464 fps | 99.6% |
| Winchester 760 | <<locked>> | 90% | 43,772 psi | 89% | 2536 fps | 96.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,288 psi | 72% | 2510 fps | 99.1% |
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>> | 98% | 38,276 psi | 78% | 2418 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 39,508 psi | 80% | 2388 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 33,272 psi | 67% | 2326 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 38,667 psi | 78% | 2359 fps | 97.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,220 psi | 84% | 2530 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,363 psi | 78% | 2382 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,031 psi | 83% | 2438 fps | 98.6% |
| Alliant Reloder-16 | 39.4 gr | 84% | 33,750 psi | 68% | 2343 fps | 95.9% |
| Alliant Reloder-17 | 40.4 gr | 80% | 33,040 psi | 67% | 2352 fps | 97.5% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,138 psi | 59% | 2254 fps | 95.6% |
| Alliant Reloder-26 | 48.6 gr | 94% | 35,636 psi | 72% | 2474 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 37,869 psi | 77% | 2382 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 80% | 38,624 psi | 78% | 2382 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 88% | 40,712 psi | 83% | 2477 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 29,095 psi | 59% | 2198 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,614 psi | 54% | 1424 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,611 psi | 82% | 2388 fps | 98.5% |
| IMR 4831 | <<locked>> | 84% | 32,242 psi | 65% | 2287 fps | 95.4% |
| Lovex S062 | <<locked>> | 80% | 40,321 psi | 82% | 2388 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 37,521 psi | 76% | 2339 fps | 95.6% |
| Lovex S070 | <<locked>> | 88% | 40,422 psi | 82% | 2415 fps | 95.2% |
| Norma 203B | <<locked>> | 80% | 40,422 psi | 82% | 2425 fps | 98.8% |
| Norma URP | <<locked>> | 84% | 33,736 psi | 68% | 2329 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 39,914 psi | 81% | 2441 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 39,871 psi | 81% | 2467 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,832 psi | 54% | 1453 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,972 psi | 79% | 2369 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,172 psi | 71% | 2415 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 32,938 psi | 67% | 2339 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 35,534 psi | 72% | 2402 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 35,737 psi | 72% | 2333 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 37,521 psi | 76% | 2339 fps | 95.6% |
| Shooters World Precision | <<locked>> | 80% | 40,321 psi | 82% | 2388 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 40,422 psi | 82% | 2415 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,463 psi | 74% | 2375 fps | 97.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,116 psi | 77% | 2280 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 36,361 psi | 74% | 2333 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 26,556 psi | 54% | 2185 fps | 96.2% |
| Vihtavuori N135 | <<locked>> | 80% | 41,858 psi | 85% | 2385 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,780 psi | 71% | 2280 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 32,837 psi | 67% | 2277 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 40,712 psi | 83% | 2385 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 34,606 psi | 70% | 2333 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 90% | 31,082 psi | 63% | 2320 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,661 psi | 62% | 2208 fps | 96.7% |
| Winchester 760 | <<locked>> | 88% | 40,959 psi | 83% | 2480 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 94% | 29,124 psi | 59% | 2326 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 47 powders for 7 x 57 R loaded with the .284 | 160gr | Nosler Partition Gold. Alliant Reloder-26 delivers the highest muzzle velocity at 2,651 fps; across all powders the maximum-charge window runs from 1,591 fps to 2,651 fps. Accurate 3100 gives the best case fill at 100 %, and 47 of the 47 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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-17, Alliant Reloder-26, Alliant Reloder-16 rank at the top here: for 7 x 57 R with the .284 | 160gr | Nosler Partition Gold 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.