Load Specifications
Load data in caliber 7 x 57 R with .284 | 168gr | Nosler Custom Competition bullet and 46 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% | 43,207 psi | 88% | 2454 fps | 97.5% |
| Accurate 4064 | <<locked>> | 82% | 43,947 psi | 89% | 2402 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 42,844 psi | 87% | 2461 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 82% | 42,409 psi | 86% | 2375 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 42,235 psi | 86% | 2395 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 90% | 42,105 psi | 85% | 2470 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 86% | 41,916 psi | 85% | 2490 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,249 psi | 84% | 2484 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 42,931 psi | 87% | 2579 fps | 98.8% |
| Bofors RP3 | <<locked>> | 82% | 42,177 psi | 86% | 2405 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 82% | 42,873 psi | 87% | 2408 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 88% | 42,714 psi | 87% | 2457 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 44,324 psi | 90% | 2461 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,853 psi | 73% | 1558 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 44,585 psi | 90% | 2402 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,454 psi | 90% | 2408 fps | 96.6% |
| IMR 4831 | <<locked>> | 92% | 43,918 psi | 89% | 2464 fps | 99% |
| Lovex S062 | <<locked>> | 82% | 44,585 psi | 90% | 2405 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 43,961 psi | 89% | 2405 fps | 97.9% |
| Lovex S070 | <<locked>> | 90% | 44,483 psi | 90% | 2434 fps | 97% |
| Norma MRP | <<locked>> | 98% | 42,946 psi | 87% | 2539 fps | 96.2% |
| Norma URP | <<locked>> | 90% | 42,554 psi | 86% | 2454 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 82% | 44,382 psi | 90% | 2461 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 92% | 44,309 psi | 90% | 2497 fps | 97.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,347 psi | 74% | 1594 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,381 psi | 88% | 2398 fps | 97.1% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 41,756 psi | 85% | 2493 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 42,540 psi | 86% | 2484 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 42,047 psi | 85% | 2493 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 84% | 42,409 psi | 86% | 2402 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 43,961 psi | 89% | 2405 fps | 97.9% |
| Shooters World Precision | <<locked>> | 82% | 44,585 psi | 90% | 2405 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 44,483 psi | 90% | 2434 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 43,337 psi | 88% | 2448 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 44,541 psi | 90% | 2326 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,468 psi | 88% | 2359 fps | 96.4% |
| Somchem S355 | <<locked>> | 84% | 43,134 psi | 87% | 2405 fps | 99.7% |
| Somchem S365 | <<locked>> | 94% | 43,671 psi | 89% | 2510 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 43,337 psi | 88% | 2448 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 86% | 43,642 psi | 89% | 2385 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 44,541 psi | 90% | 2454 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 90% | 43,961 psi | 89% | 2461 fps | 98.7% |
| Vihtavuori N555 | <<locked>> | 98% | 42,467 psi | 86% | 2500 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 44,266 psi | 90% | 2434 fps | 99.9% |
| Winchester 760 | <<locked>> | 88% | 42,714 psi | 87% | 2457 fps | 96.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,854 psi | 75% | 2500 fps | 99.8% |
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% | 35,201 psi | 71% | 2303 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 41,394 psi | 84% | 2359 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,429 psi | 62% | 2208 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 80% | 39,943 psi | 81% | 2329 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,784 psi | 81% | 2352 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,864 psi | 63% | 2218 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,360 psi | 70% | 2333 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 86% | 26,832 psi | 54% | 2139 fps | 95.1% |
| Alliant Reloder-26 | 46.5 gr | 90% | 32,663 psi | 66% | 2349 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 39,436 psi | 80% | 2356 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 80% | 40,118 psi | 81% | 2359 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 86% | 39,958 psi | 81% | 2408 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,456 psi | 58% | 2133 fps | 96.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,571 psi | 54% | 1385 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,974 psi | 85% | 2359 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 39,305 psi | 80% | 2313 fps | 95.1% |
| IMR 4831 | <<locked>> | 80% | 29,718 psi | 60% | 2172 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 42,032 psi | 85% | 2362 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 34,548 psi | 70% | 2221 fps | 95.2% |
| Lovex S070 | <<locked>> | 86% | 39,320 psi | 80% | 2339 fps | 95.5% |
| Norma MRP | <<locked>> | 96% | 40,219 psi | 82% | 2484 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 30,893 psi | 63% | 2211 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 41,524 psi | 84% | 2411 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 36,419 psi | 74% | 2343 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,093 psi | 55% | 1424 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,625 psi | 82% | 2346 fps | 96.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,535 psi | 74% | 2392 fps | 100% |
| ReloadSwiss RS 62 | 41.3 gr | 82% | 32,401 psi | 66% | 2274 fps | 95.6% |
| ReloadSwiss RS 70 | 43 gr | 84% | 34,577 psi | 70% | 2329 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 37,231 psi | 76% | 2306 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,548 psi | 70% | 2221 fps | 95.2% |
| Shooters World Precision | <<locked>> | 80% | 42,032 psi | 85% | 2362 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 39,320 psi | 80% | 2339 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,159 psi | 77% | 2352 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,378 psi | 80% | 2244 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 40,901 psi | 83% | 2313 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 38,000 psi | 77% | 2310 fps | 99.1% |
| Somchem S365 | <<locked>> | 80% | 27,659 psi | 56% | 2169 fps | 97.5% |
| Somchem S385 | <<locked>> | 94% | 40,567 psi | 82% | 2398 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 36,085 psi | 73% | 2251 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 32,155 psi | 65% | 2211 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 31,560 psi | 64% | 2211 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 86% | 28,834 psi | 58% | 2208 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,778 psi | 64% | 2188 fps | 97.8% |
| Winchester 760 | <<locked>> | 86% | 39,958 psi | 81% | 2408 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 90% | 26,760 psi | 54% | 2208 fps | 95.4% |
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 46 powders for 7 x 57 R loaded with the .284 | 168gr | Nosler Custom Competition. Alliant Reloder-26 delivers the highest muzzle velocity at 2,579 fps; across all powders the maximum-charge window runs from 1,558 fps to 2,579 fps. Accurate 3100 gives the best case fill at 100 %, and 46 of the 46 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 168.0 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, Hodgdon TrailBoss 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 | 168gr | Nosler Custom Competition 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.