Load Specifications
Load data in caliber 7 x 57 R with .284 | 142gr | Lehigh Defense Controlled Chaos bullet and 60 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, 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 2495 | <<locked>> | 86% | 44,440 psi | 90% | 2585 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 44,498 psi | 90% | 2621 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 43,047 psi | 87% | 2661 fps | 97.1% |
| ADI AR 2206H | <<locked>> | 82% | 43,062 psi | 87% | 2589 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 88% | 44,019 psi | 89% | 2592 fps | 97.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 44,599 psi | 90% | 2723 fps | 97.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 43,250 psi | 88% | 2612 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 86% | 43,961 psi | 89% | 2628 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 42,975 psi | 87% | 2667 fps | 97.1% |
| Alliant Reloder-17 | <<locked>> | 92% | 43,076 psi | 87% | 2700 fps | 98.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 41,974 psi | 85% | 2589 fps | 96.9% |
| Bofors RP3 | <<locked>> | 88% | 43,221 psi | 88% | 2621 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 82% | 43,598 psi | 88% | 2618 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 88% | 44,324 psi | 90% | 2625 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 82% | 43,381 psi | 88% | 2602 fps | 98.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,585 psi | 90% | 2657 fps | 98.8% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 41,800 psi | 85% | 2621 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,896 psi | 71% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 44,454 psi | 90% | 2605 fps | 98.8% |
| IMR 3031 | <<locked>> | 82% | 42,641 psi | 86% | 2602 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 43,555 psi | 88% | 2575 fps | 97.8% |
| IMR 4831 | <<locked>> | 98% | 44,019 psi | 89% | 2661 fps | 97.3% |
| IMR 4895 | <<locked>> | 84% | 42,105 psi | 85% | 2602 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 84% | 44,512 psi | 90% | 2621 fps | 99.9% |
| Lovex S060 | <<locked>> | 82% | 43,613 psi | 88% | 2536 fps | 98.3% |
| Lovex S062 | <<locked>> | 86% | 43,279 psi | 88% | 2579 fps | 99.2% |
| Norma 201 | <<locked>> | 82% | 42,308 psi | 86% | 2549 fps | 99% |
| Norma 202 | <<locked>> | 82% | 42,453 psi | 86% | 2559 fps | 100% |
| Norma 203B | <<locked>> | 86% | 43,265 psi | 88% | 2615 fps | 98.3% |
| Norma URP | <<locked>> | 96% | 43,163 psi | 88% | 2657 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 86% | 42,844 psi | 87% | 2628 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 82% | 44,324 psi | 90% | 2621 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,244 psi | 71% | 1709 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 42,975 psi | 87% | 2674 fps | 97.7% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 42,975 psi | 87% | 2710 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 42,670 psi | 87% | 2677 fps | 96.6% |
| Rottweil R 902 | <<locked>> | 84% | 42,627 psi | 86% | 2546 fps | 99% |
| Rottweil R 903 | <<locked>> | 90% | 43,134 psi | 87% | 2612 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 44,512 psi | 90% | 2621 fps | 99.9% |
| Shooters World Precision | <<locked>> | 86% | 43,279 psi | 88% | 2579 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 44,411 psi | 90% | 2664 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 43,192 psi | 88% | 2572 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 44,251 psi | 90% | 2608 fps | 98.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 43,787 psi | 89% | 2507 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 43,685 psi | 89% | 2513 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 43,381 psi | 88% | 2510 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 42,844 psi | 87% | 2572 fps | 98% |
| Somchem S355 | <<locked>> | 90% | 43,903 psi | 89% | 2615 fps | 98.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,743 psi | 89% | 2713 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 82% | 43,976 psi | 89% | 2503 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 44,614 psi | 90% | 2579 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 42,685 psi | 87% | 2543 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 42,148 psi | 85% | 2552 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 94% | 42,366 psi | 86% | 2605 fps | 96.6% |
| Vihtavuori N540 | <<locked>> | 86% | 44,005 psi | 89% | 2582 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 41,684 psi | 85% | 2608 fps | 96.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,564 psi | 74% | 2579 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 43,105 psi | 87% | 2592 fps | 98.7% |
| Winchester 748 | <<locked>> | 82% | 44,469 psi | 90% | 2641 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 43,714 psi | 89% | 2615 fps | 98.8% |
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 2495 | <<locked>> | 80% | 36,390 psi | 74% | 2441 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,432 psi | 70% | 2428 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 37,391 psi | 76% | 2549 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 40,509 psi | 82% | 2539 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 36,695 psi | 74% | 2441 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,405 psi | 74% | 2543 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,533 psi | 68% | 2405 fps | 96.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,347 psi | 74% | 2470 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 38,145 psi | 77% | 2562 fps | 95.5% |
| Alliant Reloder-17 | 41.4 gr | 84% | 33,199 psi | 67% | 2474 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,291 psi | 80% | 2533 fps | 96.1% |
| Bofors RP3 | <<locked>> | 80% | 33,112 psi | 67% | 2411 fps | 96.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,698 psi | 83% | 2566 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 38,885 psi | 79% | 2516 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 40,828 psi | 83% | 2552 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,721 psi | 66% | 2408 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,477 psi | 74% | 2510 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,107 psi | 53% | 1496 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,073 psi | 79% | 2500 fps | 97.7% |
| IMR 3031 | <<locked>> | 80% | 39,900 psi | 81% | 2552 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,201 psi | 73% | 2425 fps | 95.9% |
| IMR 4831 | <<locked>> | 92% | 36,201 psi | 73% | 2503 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 37,188 psi | 75% | 2500 fps | 96.8% |
| Lovex D073.6 | <<locked>> | 80% | 39,015 psi | 79% | 2520 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 40,828 psi | 83% | 2480 fps | 97.7% |
| Lovex S062 | <<locked>> | 80% | 35,752 psi | 73% | 2428 fps | 97.7% |
| Norma 201 | <<locked>> | 80% | 39,508 psi | 80% | 2493 fps | 98.5% |
| Norma 202 | <<locked>> | 80% | 39,624 psi | 80% | 2507 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 35,766 psi | 73% | 2461 fps | 96.3% |
| Norma URP | <<locked>> | 92% | 37,869 psi | 77% | 2549 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 35,027 psi | 71% | 2464 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,437 psi | 84% | 2566 fps | 97.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,252 psi | 53% | 1529 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,550 psi | 76% | 2559 fps | 96.2% |
| ReloadSwiss RS 60 | 39.4 gr | 80% | 30,951 psi | 63% | 2421 fps | 97.2% |
| ReloadSwiss RS 62 | 46.2 gr | 94% | 39,842 psi | 81% | 2618 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 37,681 psi | 76% | 2448 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 80% | 31,169 psi | 63% | 2356 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,015 psi | 79% | 2520 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 35,752 psi | 73% | 2428 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,432 psi | 70% | 2454 fps | 95.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,393 psi | 82% | 2520 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,957 psi | 79% | 2507 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,147 psi | 83% | 2461 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,939 psi | 69% | 2329 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 40,596 psi | 82% | 2464 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,016 psi | 81% | 2516 fps | 97.4% |
| Somchem S355 | <<locked>> | 80% | 32,024 psi | 65% | 2359 fps | 95.5% |
| Somchem S365 | <<locked>> | 88% | 29,849 psi | 61% | 2392 fps | 95.9% |
| Vihtavuori N133 | <<locked>> | 80% | 41,336 psi | 84% | 2461 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,724 psi | 74% | 2441 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,695 psi | 76% | 2448 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 30,545 psi | 62% | 2306 fps | 96.5% |
| Vihtavuori N160 | <<locked>> | 90% | 37,463 psi | 76% | 2503 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 36,201 psi | 73% | 2434 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 92% | 38,928 psi | 79% | 2552 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 98% | 34,330 psi | 70% | 2523 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,069 psi | 67% | 2375 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 41,510 psi | 84% | 2585 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,130 psi | 77% | 2507 fps | 97.6% |
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 84 powders for 7 x 57 R loaded with the .284 | 142gr | Lehigh Defense Controlled Chaos. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,723 fps; across all powders the maximum-charge window runs from 1,670 fps to 2,723 fps. Accurate 3100 gives the best case fill at 100 %, and 84 of the 84 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 142.0 gr projectile in 0.284" calls for a 1:9.5 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. ReloadSwiss RS 60, Alliant Reloder-17, ReloadSwiss RS 62 rank at the top here: for 7 x 57 R with the .284 | 142gr | Lehigh Defense Controlled Chaos they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 3100, Alliant Reloder-26 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.