Load Specifications
Load data in caliber 7 x 57 R with .284 | 125gr | Lehigh Defense Controlled Chaos bullet and 59 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 Ramshot Big Game.
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 2015 | <<locked>> | 82% | 43,845 psi | 89% | 2700 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 43,816 psi | 89% | 2753 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 42,844 psi | 87% | 2753 fps | 99.4% |
| Accurate 4064 | <<locked>> | 90% | 44,019 psi | 89% | 2792 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 42,946 psi | 87% | 2756 fps | 97% |
| ADI AR 2208 | <<locked>> | 90% | 43,874 psi | 89% | 2753 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 42,322 psi | 86% | 2717 fps | 98% |
| Alliant AR-Comp | <<locked>> | 84% | 44,425 psi | 90% | 2776 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 44,498 psi | 90% | 2884 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 43,018 psi | 87% | 2776 fps | 98% |
| Alliant Reloder-15 | <<locked>> | 88% | 43,555 psi | 88% | 2789 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 94% | 42,946 psi | 87% | 2858 fps | 97.4% |
| Bofors RP3 | <<locked>> | 90% | 42,714 psi | 87% | 2782 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 82% | 44,469 psi | 90% | 2717 fps | 98.9% |
| Hodgdon BL-C2 | <<locked>> | 84% | 43,265 psi | 88% | 2785 fps | 98.7% |
| Hodgdon CFE223 | <<locked>> | 82% | 44,512 psi | 90% | 2864 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 84% | 43,279 psi | 88% | 2766 fps | 97.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,553 psi | 84% | 2759 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 44,266 psi | 90% | 2841 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,650 psi | 70% | 1791 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 44,353 psi | 90% | 2772 fps | 97.8% |
| IMR 3031 | <<locked>> | 84% | 42,076 psi | 85% | 2772 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 43,439 psi | 88% | 2740 fps | 96.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 43,221 psi | 88% | 2808 fps | 95.8% |
| IMR 4895 | <<locked>> | 88% | 44,599 psi | 90% | 2822 fps | 97.5% |
| IMR 8208 XBR | <<locked>> | 82% | 42,322 psi | 86% | 2717 fps | 98% |
| Lovex D073.6 | <<locked>> | 86% | 44,179 psi | 90% | 2789 fps | 99.5% |
| Lovex S060 | <<locked>> | 84% | 43,627 psi | 88% | 2697 fps | 97.2% |
| Lovex S062 | <<locked>> | 88% | 42,975 psi | 87% | 2743 fps | 98.3% |
| Norma 201 | <<locked>> | 84% | 42,003 psi | 85% | 2710 fps | 98% |
| Norma 202 | <<locked>> | 84% | 42,076 psi | 85% | 2723 fps | 99.6% |
| Norma 203B | <<locked>> | 88% | 42,801 psi | 87% | 2776 fps | 97% |
| Ramshot Big Game | <<locked>> | 88% | 42,598 psi | 86% | 2789 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 84% | 44,382 psi | 90% | 2789 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,882 psi | 71% | 1834 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 42,540 psi | 86% | 2835 fps | 96.3% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 42,960 psi | 87% | 2877 fps | 99.4% |
| Rottweil R 901 | <<locked>> | 82% | 43,221 psi | 88% | 2713 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 86% | 42,554 psi | 86% | 2713 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 92% | 42,583 psi | 86% | 2769 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 86% | 44,179 psi | 90% | 2789 fps | 99.5% |
| Shooters World Precision | <<locked>> | 88% | 42,975 psi | 87% | 2743 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 44,121 psi | 89% | 2825 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 44,092 psi | 89% | 2776 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 43,932 psi | 89% | 2680 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 43,352 psi | 88% | 2677 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 43,207 psi | 88% | 2680 fps | 99.9% |
| Somchem S341 | <<locked>> | 84% | 42,844 psi | 87% | 2736 fps | 96.8% |
| Somchem S355 | <<locked>> | 92% | 43,569 psi | 88% | 2776 fps | 97.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,422 psi | 82% | 2808 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 84% | 43,990 psi | 89% | 2680 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 44,005 psi | 89% | 2749 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 42,453 psi | 86% | 2710 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 94% | 44,440 psi | 90% | 2762 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 82% | 42,235 psi | 86% | 2710 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 88% | 43,801 psi | 89% | 2749 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 43,207 psi | 88% | 2746 fps | 97.5% |
| Winchester 748 | <<locked>> | 84% | 44,251 psi | 90% | 2812 fps | 99.1% |
| Winchester StaBALL Match | <<locked>> | 86% | 43,352 psi | 88% | 2779 fps | 97.7% |
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 2015 | <<locked>> | 80% | 41,278 psi | 84% | 2654 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 33,634 psi | 68% | 2549 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 40,016 psi | 81% | 2697 fps | 99% |
| Accurate 4064 | <<locked>> | 80% | 31,821 psi | 65% | 2526 fps | 98% |
| ADI AR 2206H | <<locked>> | 80% | 37,681 psi | 76% | 2641 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 88% | 41,350 psi | 84% | 2700 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,639 psi | 80% | 2661 fps | 97.4% |
| Alliant AR-Comp | <<locked>> | 80% | 38,725 psi | 79% | 2677 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 41,698 psi | 85% | 2825 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 33,344 psi | 68% | 2559 fps | 95% |
| Alliant Reloder-15 | <<locked>> | 84% | 38,421 psi | 78% | 2677 fps | 95% |
| Alliant Reloder-17 | 45.8 gr | 90% | 37,492 psi | 76% | 2733 fps | 95.6% |
| Bofors RP3 | <<locked>> | 84% | 34,766 psi | 71% | 2605 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,974 psi | 85% | 2667 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,898 psi | 77% | 2671 fps | 97.6% |
| Hodgdon CFE223 | <<locked>> | 80% | 41,684 psi | 85% | 2805 fps | 96% |
| Hodgdon H4895 | <<locked>> | 80% | 37,927 psi | 77% | 2651 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 36,608 psi | 74% | 2651 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,055 psi | 69% | 2608 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,657 psi | 52% | 1601 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,622 psi | 74% | 2605 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 36,767 psi | 75% | 2664 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 38,290 psi | 78% | 2631 fps | 95.1% |
| IMR 4831 | <<locked>> | 98% | 40,625 psi | 82% | 2759 fps | 95% |
| IMR 4895 | <<locked>> | 82% | 36,796 psi | 75% | 2654 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 39,639 psi | 80% | 2661 fps | 97.4% |
| Lovex D073.6 | <<locked>> | 80% | 35,998 psi | 73% | 2621 fps | 98.1% |
| Lovex S060 | <<locked>> | 80% | 38,609 psi | 78% | 2592 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 33,417 psi | 68% | 2530 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 37,043 psi | 75% | 2602 fps | 96.8% |
| Norma 202 | <<locked>> | 80% | 37,028 psi | 75% | 2618 fps | 98.9% |
| Norma 203B | <<locked>> | 84% | 37,739 psi | 77% | 2667 fps | 95.5% |
| Ramshot Big Game | 44.5 gr | 86% | 39,929 psi | 81% | 2730 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,696 psi | 78% | 2671 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,715 psi | 52% | 1637 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 39,726 psi | 81% | 2772 fps | 95.4% |
| ReloadSwiss RS 60 | 41.8 gr | 82% | 30,922 psi | 63% | 2562 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 40,770 psi | 83% | 2664 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 80% | 35,375 psi | 72% | 2556 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 86% | 34,940 psi | 71% | 2605 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,998 psi | 73% | 2621 fps | 98.1% |
| Shooters World Precision | <<locked>> | 80% | 33,417 psi | 68% | 2530 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 38,769 psi | 79% | 2713 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 38,754 psi | 79% | 2664 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,609 psi | 78% | 2575 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,691 psi | 64% | 2434 fps | 98.4% |
| Somchem S335 | <<locked>> | 80% | 38,232 psi | 78% | 2582 fps | 99.5% |
| Somchem S341 | <<locked>> | 80% | 37,333 psi | 76% | 2621 fps | 95.2% |
| Somchem S355 | <<locked>> | 86% | 36,201 psi | 73% | 2618 fps | 95.6% |
| Somchem S365 | <<locked>> | 94% | 33,388 psi | 68% | 2635 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 38,711 psi | 79% | 2582 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,982 psi | 69% | 2552 fps | 99.8% |
| Vihtavuori N140 | <<locked>> | 80% | 34,969 psi | 71% | 2552 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 84% | 32,097 psi | 65% | 2497 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 39,740 psi | 81% | 2657 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 80% | 33,736 psi | 68% | 2536 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 37,826 psi | 77% | 2635 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 38,653 psi | 78% | 2697 fps | 98.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,578 psi | 72% | 2608 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 59 powders for 7 x 57 R loaded with the .284 | 125gr | Lehigh Defense Controlled Chaos. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,884 fps; across all powders the maximum-charge window runs from 1,791 fps to 2,884 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 59 of the 59 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 70–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, Hodgdon TrailBoss, IMR 4831 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, Ramshot Big Game rank at the top here: for 7 x 57 R with the .284 | 125gr | Lehigh Defense Controlled Chaos 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.