Load Specifications
Load data in caliber 7 x 57 with .284 | 150gr | Hornady ECX bullet and 87 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 70.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 48,428 psi | 86% | 2543 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 49,226 psi | 87% | 2602 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 48,109 psi | 85% | 2618 fps | 100% |
| Accurate 4064 | <<locked>> | 90% | 49,197 psi | 87% | 2641 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 48,544 psi | 86% | 2707 fps | 98.8% |
| ADI AR 2206H | <<locked>> | 86% | 50,575 psi | 89% | 2674 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 90% | 48,733 psi | 86% | 2628 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 84% | 50,053 psi | 88% | 2631 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 50,299 psi | 89% | 2615 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 50,038 psi | 88% | 2779 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 48,341 psi | 85% | 2648 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 88% | 48,762 psi | 86% | 2664 fps | 99.2% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,720 psi | 90% | 2769 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 94% | 48,283 psi | 85% | 2749 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,723 psi | 63% | 2500 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,697 psi | 70% | 2644 fps | 96.3% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 50,343 psi | 89% | 2687 fps | 99.1% |
| Bofors RP3 | <<locked>> | 90% | 47,993 psi | 85% | 2654 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 48,733 psi | 86% | 2572 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 48,675 psi | 86% | 2654 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 50,517 psi | 89% | 2746 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 90% | 49,356 psi | 87% | 2664 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 96% | 48,791 psi | 86% | 2710 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 86% | 51,053 psi | 90% | 2684 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,862 psi | 83% | 2651 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 50,212 psi | 89% | 2713 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,940 psi | 62% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 49,284 psi | 87% | 2638 fps | 99.7% |
| IMR 3031 | <<locked>> | 86% | 50,676 psi | 90% | 2671 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 48,298 psi | 85% | 2612 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 86% | 48,211 psi | 85% | 2582 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 92% | 47,993 psi | 85% | 2608 fps | 95.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,617 psi | 88% | 2707 fps | 99% |
| IMR 4895 | <<locked>> | 88% | 49,995 psi | 88% | 2694 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 84% | 50,053 psi | 88% | 2631 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 49,806 psi | 88% | 2651 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 50,720 psi | 90% | 2608 fps | 99.7% |
| Lovex S062 | <<locked>> | 90% | 50,836 psi | 90% | 2654 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 49,835 psi | 88% | 2648 fps | 97.8% |
| Lovex S070 | <<locked>> | 98% | 50,575 psi | 89% | 2677 fps | 96.9% |
| Norma 201 | <<locked>> | 86% | 49,284 psi | 87% | 2621 fps | 99.9% |
| Norma 202 | <<locked>> | 86% | 50,096 psi | 89% | 2631 fps | 100% |
| Norma 203B | <<locked>> | 88% | 47,964 psi | 85% | 2651 fps | 99.5% |
| Norma URP | <<locked>> | 98% | 48,356 psi | 85% | 2703 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 88% | 48,182 psi | 85% | 2674 fps | 99.4% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,792 psi | 90% | 2749 fps | 97.7% |
| Ramshot TAC | <<locked>> | 84% | 49,937 psi | 88% | 2641 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 84% | 49,313 psi | 87% | 2657 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 82% | 50,836 psi | 90% | 2631 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,273 psi | 62% | 1680 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 49,922 psi | 88% | 2648 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 48,617 psi | 86% | 2720 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 48,196 psi | 85% | 2756 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 48,443 psi | 86% | 2730 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 48,776 psi | 86% | 2753 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 84% | 50,212 psi | 89% | 2608 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 49,980 psi | 88% | 2625 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 47,892 psi | 85% | 2644 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 96% | 49,835 psi | 88% | 2648 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 49,806 psi | 88% | 2651 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 50,836 psi | 90% | 2654 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 50,575 psi | 89% | 2677 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 49,951 psi | 88% | 2710 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 48,080 psi | 85% | 2615 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 49,211 psi | 87% | 2648 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 48,298 psi | 85% | 2530 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 48,138 psi | 85% | 2530 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 50,357 psi | 89% | 2605 fps | 96.6% |
| Somchem S321 | <<locked>> | 82% | 50,647 psi | 90% | 2657 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 50,401 psi | 89% | 2569 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 48,066 psi | 85% | 2615 fps | 99.4% |
| Somchem S355 | <<locked>> | 92% | 48,907 psi | 86% | 2651 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 46,006 psi | 81% | 2703 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 48,559 psi | 86% | 2523 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 49,472 psi | 87% | 2595 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 50,343 psi | 89% | 2608 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 50,038 psi | 88% | 2635 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 50,821 psi | 90% | 2700 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 84% | 50,169 psi | 89% | 2628 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 48,588 psi | 86% | 2605 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 49,676 psi | 88% | 2703 fps | 98.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,450 psi | 68% | 2572 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 48,167 psi | 85% | 2638 fps | 99.8% |
| Winchester 748 | <<locked>> | 84% | 49,893 psi | 88% | 2674 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 48,791 psi | 86% | 2710 fps | 96.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,923 psi | 56% | 2480 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 86% | 48,762 psi | 86% | 2654 fps | 99.7% |
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% | 45,513 psi | 80% | 2500 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,536 psi | 66% | 2415 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,614 psi | 79% | 2562 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,520 psi | 63% | 2405 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 34,055 psi | 60% | 2431 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 41,727 psi | 74% | 2520 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 35,563 psi | 63% | 2375 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,816 psi | 77% | 2530 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 43,830 psi | 77% | 2523 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,956 psi | 67% | 2539 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,853 psi | 62% | 2392 fps | 97.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,449 psi | 66% | 2451 fps | 97% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,940 psi | 62% | 2451 fps | 95.4% |
| Alliant Reloder-17 | 40.4 gr | 80% | 29,950 psi | 53% | 2349 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,531 psi | 56% | 2395 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,072 psi | 66% | 2582 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,017 psi | 73% | 2523 fps | 97.4% |
| Bofors RP3 | <<locked>> | 80% | 34,272 psi | 61% | 2395 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,963 psi | 81% | 2526 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,511 psi | 75% | 2552 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,847 psi | 83% | 2684 fps | 99% |
| Hodgdon H380 | <<locked>> | 82% | 37,840 psi | 67% | 2451 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 94% | 45,556 psi | 81% | 2651 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 42,061 psi | 74% | 2530 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,907 psi | 53% | 2297 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,218 psi | 68% | 2503 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,049 psi | 46% | 1467 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,567 psi | 72% | 2487 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 41,495 psi | 73% | 2526 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,275 psi | 66% | 2408 fps | 97% |
| IMR 4166 Enduron | <<locked>> | 84% | 45,455 psi | 80% | 2536 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 44,976 psi | 80% | 2556 fps | 95.2% |
| IMR 4831 | <<locked>> | 90% | 35,505 psi | 63% | 2448 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 38,363 psi | 68% | 2480 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 80% | 43,816 psi | 77% | 2530 fps | 99.6% |
| Lovex D073.6 | <<locked>> | 80% | 40,480 psi | 72% | 2500 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 42,235 psi | 75% | 2464 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 37,028 psi | 65% | 2411 fps | 98.6% |
| Lovex S065 | <<locked>> | 88% | 39,015 psi | 69% | 2451 fps | 95.1% |
| Lovex S070 | <<locked>> | 94% | 44,570 psi | 79% | 2575 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 40,799 psi | 72% | 2474 fps | 99.2% |
| Norma 202 | <<locked>> | 80% | 41,118 psi | 73% | 2487 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,840 psi | 65% | 2441 fps | 97.4% |
| Norma URP | <<locked>> | 88% | 34,679 psi | 61% | 2434 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 36,535 psi | 65% | 2457 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 94% | 41,626 psi | 74% | 2585 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 43,918 psi | 78% | 2536 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,236 psi | 76% | 2552 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,398 psi | 84% | 2579 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,165 psi | 46% | 1499 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 43,772 psi | 77% | 2543 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,233 psi | 69% | 2549 fps | 97.5% |
| ReloadSwiss RS 60 | 40.4 gr | 80% | 31,952 psi | 56% | 2415 fps | 98.5% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 36,448 psi | 64% | 2503 fps | 95.5% |
| ReloadSwiss RS 70 | 47.2 gr | 92% | 39,639 psi | 70% | 2572 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 44,541 psi | 79% | 2516 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,943 psi | 69% | 2431 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 32,097 psi | 57% | 2336 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,015 psi | 69% | 2451 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,480 psi | 72% | 2500 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 37,028 psi | 65% | 2411 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 94% | 44,570 psi | 79% | 2575 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,330 psi | 59% | 2388 fps | 96.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 42,003 psi | 74% | 2507 fps | 96.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,364 psi | 71% | 2490 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,627 psi | 75% | 2441 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,230 psi | 62% | 2313 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 43,816 psi | 77% | 2500 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 47,427 psi | 84% | 2608 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 41,945 psi | 74% | 2438 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,742 psi | 74% | 2507 fps | 98.4% |
| Somchem S355 | <<locked>> | 80% | 33,170 psi | 59% | 2349 fps | 96.8% |
| Somchem S365 | <<locked>> | 84% | 27,238 psi | 48% | 2280 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 42,946 psi | 76% | 2438 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,319 psi | 68% | 2421 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,885 psi | 69% | 2425 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,444 psi | 56% | 2290 fps | 97.6% |
| Vihtavuori N160 | <<locked>> | 88% | 36,492 psi | 65% | 2441 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 44,063 psi | 78% | 2530 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 37,463 psi | 66% | 2415 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 35,679 psi | 63% | 2441 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 96% | 33,881 psi | 60% | 2470 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,994 psi | 53% | 2264 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 43,221 psi | 76% | 2566 fps | 99.9% |
| Winchester 760 | <<locked>> | 94% | 45,556 psi | 81% | 2651 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,921 psi | 53% | 2415 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,595 psi | 70% | 2490 fps | 98.6% |
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 87 powders for 7 x 57 loaded with the .284 | 150gr | Hornady ECX. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,779 fps; across all powders the maximum-charge window runs from 1,640 fps to 2,779 fps. Alliant Reloder-16 gives the best case fill at 100 %, and 87 of the 87 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, 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 70 rank at the top here: for 7 x 57 with the .284 | 150gr | Hornady ECX 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.