Load Specifications
Load data in caliber 7 x 57 R with .284 | 160gr | Nosler CT FailSafe bullet and 49 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 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% | 41,104 psi | 83% | 2470 fps | 96.3% |
| Accurate 4064 | <<locked>> | 82% | 42,192 psi | 86% | 2434 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 43,526 psi | 88% | 2533 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 84% | 43,497 psi | 88% | 2448 fps | 98.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 43,976 psi | 89% | 2582 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 43,149 psi | 88% | 2470 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 82% | 43,511 psi | 88% | 2480 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 92% | 42,960 psi | 87% | 2543 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 88% | 42,989 psi | 87% | 2569 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,204 psi | 80% | 2497 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,888 psi | 89% | 2651 fps | 98.4% |
| Bofors RP3 | <<locked>> | 84% | 43,033 psi | 87% | 2477 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 84% | 44,106 psi | 89% | 2487 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 90% | 43,439 psi | 88% | 2530 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 42,177 psi | 86% | 2480 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 44,570 psi | 90% | 2530 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,708 psi | 72% | 1594 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 43,033 psi | 87% | 2434 fps | 98.9% |
| IMR 4831 | <<locked>> | 92% | 41,669 psi | 85% | 2484 fps | 98.2% |
| IMR 4895 | <<locked>> | 82% | 44,599 psi | 90% | 2510 fps | 99.5% |
| Lovex S062 | <<locked>> | 82% | 43,018 psi | 87% | 2438 fps | 99.8% |
| Lovex S065 | <<locked>> | 88% | 42,380 psi | 86% | 2431 fps | 96.9% |
| Lovex S070 | <<locked>> | 90% | 42,801 psi | 87% | 2461 fps | 95.9% |
| Norma 203B | <<locked>> | 82% | 42,844 psi | 87% | 2470 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 43,352 psi | 88% | 2526 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 82% | 42,598 psi | 86% | 2490 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 92% | 42,525 psi | 86% | 2520 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,158 psi | 73% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 44,338 psi | 90% | 2467 fps | 96.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 42,859 psi | 87% | 2572 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 43,120 psi | 87% | 2549 fps | 98.2% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 43,120 psi | 87% | 2566 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 86% | 43,207 psi | 88% | 2474 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 42,380 psi | 86% | 2431 fps | 96.9% |
| Shooters World Precision | <<locked>> | 82% | 43,018 psi | 87% | 2438 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 90% | 42,801 psi | 87% | 2461 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 44,469 psi | 90% | 2526 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 43,018 psi | 87% | 2362 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 43,758 psi | 89% | 2474 fps | 99.6% |
| Somchem S365 | <<locked>> | 96% | 44,324 psi | 90% | 2582 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 44,454 psi | 90% | 2425 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 44,585 psi | 90% | 2457 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 42,728 psi | 87% | 2480 fps | 98.2% |
| Vihtavuori N540 | <<locked>> | 82% | 43,395 psi | 88% | 2431 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 41,901 psi | 85% | 2480 fps | 97.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,960 psi | 87% | 2569 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 42,337 psi | 86% | 2457 fps | 99.6% |
| Winchester 760 | <<locked>> | 90% | 43,439 psi | 88% | 2530 fps | 95.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,056 psi | 71% | 2500 fps | 99% |
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% | 38,232 psi | 78% | 2418 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 39,450 psi | 80% | 2385 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 33,199 psi | 67% | 2326 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 80% | 38,319 psi | 78% | 2349 fps | 97.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,162 psi | 83% | 2526 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,000 psi | 77% | 2372 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,988 psi | 83% | 2434 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 33,460 psi | 68% | 2333 fps | 95.8% |
| Alliant Reloder-17 | 40.2 gr | 80% | 32,779 psi | 66% | 2346 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,906 psi | 59% | 2247 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 94% | 35,607 psi | 72% | 2470 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 37,797 psi | 77% | 2379 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 80% | 38,580 psi | 78% | 2382 fps | 96.8% |
| Hodgdon H414 | <<locked>> | 88% | 40,683 psi | 83% | 2474 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 28,834 psi | 58% | 2192 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,655 psi | 84% | 2477 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,440 psi | 54% | 1417 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,248 psi | 82% | 2382 fps | 98.4% |
| IMR 4831 | <<locked>> | 84% | 32,155 psi | 65% | 2283 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 42,003 psi | 85% | 2464 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 40,263 psi | 82% | 2385 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 37,463 psi | 76% | 2336 fps | 95.5% |
| Lovex S070 | <<locked>> | 88% | 40,132 psi | 81% | 2408 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 40,379 psi | 82% | 2425 fps | 98.8% |
| Norma URP | <<locked>> | 84% | 33,446 psi | 68% | 2323 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 39,827 psi | 81% | 2438 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 90% | 39,813 psi | 81% | 2467 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,934 psi | 55% | 1457 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 38,928 psi | 79% | 2365 fps | 95.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,867 psi | 71% | 2405 fps | 99.7% |
| ReloadSwiss RS 62 | 42.2 gr | 84% | 32,909 psi | 67% | 2336 fps | 95.1% |
| ReloadSwiss RS 70 | 43.9 gr | 86% | 35,259 psi | 72% | 2395 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 35,418 psi | 72% | 2326 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 37,463 psi | 76% | 2336 fps | 95.5% |
| Shooters World Precision | <<locked>> | 80% | 40,263 psi | 82% | 2385 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 40,132 psi | 81% | 2408 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,376 psi | 74% | 2372 fps | 97.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,058 psi | 77% | 2277 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 36,289 psi | 74% | 2333 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 26,498 psi | 54% | 2182 fps | 96.2% |
| Vihtavuori N135 | <<locked>> | 80% | 41,771 psi | 85% | 2385 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,461 psi | 70% | 2270 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 32,764 psi | 66% | 2277 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 40,654 psi | 82% | 2385 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 34,563 psi | 70% | 2329 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 90% | 30,995 psi | 63% | 2316 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,632 psi | 62% | 2208 fps | 96.6% |
| Winchester 760 | <<locked>> | 88% | 40,683 psi | 83% | 2474 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 94% | 28,906 psi | 59% | 2316 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 49 powders for 7 x 57 R loaded with the .284 | 160gr | Nosler CT FailSafe. Alliant Reloder-26 delivers the highest muzzle velocity at 2,651 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,651 fps. Accurate 3100 gives the best case fill at 100 %, and 49 of the 49 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.0 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. ReloadSwiss RS 70, Alliant Reloder-17, ReloadSwiss RS 62 rank at the top here: for 7 x 57 R with the .284 | 160gr | Nosler CT FailSafe 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.