Load Specifications
Load data in caliber 7 x 57 with .284 | 145gr | Barnes LRX BT 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 Alliant Power Pro 2000-MR.
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>> | 84% | 49,617 psi | 88% | 2598 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 50,923 psi | 90% | 2661 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 49,966 psi | 88% | 2654 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 49,226 psi | 87% | 2674 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 50,256 psi | 89% | 2700 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 49,385 psi | 87% | 2759 fps | 98.6% |
| ADI AR 2206H | <<locked>> | 86% | 48,849 psi | 86% | 2680 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 92% | 49,705 psi | 88% | 2677 fps | 98.9% |
| ADI Benchmark 8208 | <<locked>> | 84% | 48,051 psi | 85% | 2638 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 86% | 51,097 psi | 90% | 2671 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 47,645 psi | 84% | 2772 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 49,153 psi | 87% | 2700 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 90% | 49,951 psi | 88% | 2720 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 48,733 psi | 86% | 2766 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 96% | 49,211 psi | 87% | 2802 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,185 psi | 60% | 2493 fps | 96.2% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 48,283 psi | 85% | 2690 fps | 98.5% |
| Bofors RP3 | <<locked>> | 92% | 49,153 psi | 87% | 2710 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 50,067 psi | 89% | 2631 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 49,821 psi | 88% | 2710 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 48,167 psi | 85% | 2746 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 92% | 50,647 psi | 90% | 2723 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 98% | 49,647 psi | 88% | 2759 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 86% | 49,284 psi | 87% | 2694 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,802 psi | 79% | 2651 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 47,964 psi | 85% | 2720 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,795 psi | 62% | 1660 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 50,604 psi | 89% | 2697 fps | 99.7% |
| IMR 3031 | <<locked>> | 86% | 48,660 psi | 86% | 2684 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 49,226 psi | 87% | 2664 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 88% | 49,603 psi | 88% | 2638 fps | 95.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 47,079 psi | 83% | 2703 fps | 98.2% |
| IMR 4895 | <<locked>> | 88% | 47,834 psi | 85% | 2697 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 84% | 48,051 psi | 85% | 2638 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 82% | 50,821 psi | 90% | 2671 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 50,995 psi | 90% | 2710 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 49,182 psi | 87% | 2621 fps | 99.3% |
| Lovex S062 | <<locked>> | 90% | 48,718 psi | 86% | 2661 fps | 99.8% |
| Lovex S065 | <<locked>> | 98% | 51,126 psi | 90% | 2703 fps | 97.6% |
| Lovex S070 | <<locked>> | 98% | 48,544 psi | 86% | 2680 fps | 95.9% |
| Norma 201 | <<locked>> | 88% | 50,531 psi | 89% | 2677 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 50,981 psi | 90% | 2687 fps | 100% |
| Norma 203B | <<locked>> | 90% | 49,139 psi | 87% | 2710 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 49,153 psi | 87% | 2753 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 90% | 49,327 psi | 87% | 2730 fps | 99.3% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 48,428 psi | 86% | 2743 fps | 96.7% |
| Ramshot TAC | <<locked>> | 84% | 48,066 psi | 85% | 2644 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 86% | 50,894 psi | 90% | 2720 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 82% | 48,936 psi | 87% | 2638 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,099 psi | 62% | 1699 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 50,647 psi | 90% | 2671 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 47,964 psi | 85% | 2651 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 49,690 psi | 88% | 2779 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 49,429 psi | 87% | 2815 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 49,211 psi | 87% | 2782 fps | 98.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 49,922 psi | 88% | 2802 fps | 97.9% |
| Rottweil R 901 | <<locked>> | 84% | 48,443 psi | 86% | 2618 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 50,923 psi | 90% | 2677 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 94% | 49,037 psi | 87% | 2700 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 98% | 51,126 psi | 90% | 2703 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 50,995 psi | 90% | 2710 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 48,718 psi | 86% | 2661 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 98% | 48,544 psi | 86% | 2680 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 50,850 psi | 90% | 2762 fps | 99.5% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 49,342 psi | 87% | 2671 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 50,459 psi | 89% | 2703 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 49,313 psi | 87% | 2582 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 49,211 psi | 87% | 2585 fps | 100% |
| Somchem S321 | <<locked>> | 82% | 48,631 psi | 86% | 2664 fps | 99.9% |
| Somchem S335 | <<locked>> | 86% | 48,747 psi | 86% | 2585 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 49,255 psi | 87% | 2671 fps | 99.2% |
| Somchem S355 | <<locked>> | 94% | 49,748 psi | 88% | 2703 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,874 psi | 78% | 2703 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 82% | 49,255 psi | 87% | 2556 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 49,530 psi | 88% | 2575 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 50,299 psi | 89% | 2651 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 48,544 psi | 86% | 2621 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 51,053 psi | 90% | 2687 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 48,617 psi | 86% | 2703 fps | 98.2% |
| Vihtavuori N530 | <<locked>> | 84% | 48,080 psi | 85% | 2635 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 90% | 49,821 psi | 88% | 2664 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 50,952 psi | 90% | 2759 fps | 98.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,448 psi | 64% | 2566 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 49,298 psi | 87% | 2687 fps | 99.7% |
| Winchester 748 | <<locked>> | 86% | 51,097 psi | 90% | 2736 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 49,647 psi | 88% | 2759 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 49,980 psi | 88% | 2710 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% | 43,787 psi | 77% | 2510 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 47,529 psi | 84% | 2612 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 35,781 psi | 63% | 2421 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,830 psi | 76% | 2569 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 33,881 psi | 60% | 2408 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 37,101 psi | 66% | 2533 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 40,147 psi | 71% | 2523 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 80% | 34,200 psi | 60% | 2375 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 42,250 psi | 75% | 2536 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 80% | 41,858 psi | 74% | 2536 fps | 100% |
| Alliant Power Pro 2000-MR | 40.5 gr | 80% | 36,303 psi | 64% | 2533 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,359 psi | 59% | 2395 fps | 96.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,955 psi | 64% | 2454 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 90% | 35,766 psi | 63% | 2500 fps | 95% |
| Alliant Reloder-17 | 41.9 gr | 84% | 32,953 psi | 58% | 2461 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,213 psi | 57% | 2441 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,189 psi | 69% | 2520 fps | 96.4% |
| Bofors RP3 | <<locked>> | 80% | 32,489 psi | 57% | 2388 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 44,164 psi | 78% | 2533 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,567 psi | 72% | 2552 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 44,628 psi | 79% | 2684 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 84% | 38,682 psi | 68% | 2503 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 96% | 46,354 psi | 82% | 2700 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 40,451 psi | 72% | 2533 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,489 psi | 57% | 2395 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,376 psi | 64% | 2497 fps | 97.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,802 psi | 46% | 1483 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,059 psi | 69% | 2490 fps | 98% |
| IMR 3031 | <<locked>> | 80% | 39,639 psi | 70% | 2536 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,853 psi | 63% | 2411 fps | 96.1% |
| IMR 4166 Enduron | <<locked>> | 86% | 46,731 psi | 83% | 2589 fps | 95.1% |
| IMR 4831 | <<locked>> | 92% | 35,940 psi | 64% | 2490 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 36,796 psi | 65% | 2484 fps | 97% |
| IMR 8208 XBR | <<locked>> | 80% | 42,250 psi | 75% | 2536 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 47,471 psi | 84% | 2618 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 38,754 psi | 69% | 2503 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 40,814 psi | 72% | 2470 fps | 97.9% |
| Lovex S062 | <<locked>> | 80% | 35,534 psi | 63% | 2415 fps | 97.9% |
| Lovex S065 | <<locked>> | 92% | 42,409 psi | 75% | 2552 fps | 95.6% |
| Lovex S070 | <<locked>> | 96% | 45,368 psi | 80% | 2625 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 39,262 psi | 69% | 2480 fps | 98.7% |
| Norma 202 | <<locked>> | 80% | 39,508 psi | 70% | 2493 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 35,331 psi | 62% | 2441 fps | 96.5% |
| Norma URP | <<locked>> | 92% | 37,681 psi | 67% | 2536 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 34,867 psi | 62% | 2451 fps | 96% |
| Ramshot Hunter | <<locked>> | 96% | 42,366 psi | 75% | 2631 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 42,206 psi | 75% | 2536 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,379 psi | 73% | 2556 fps | 98% |
| Ramshot X-Terminator | <<locked>> | 80% | 45,861 psi | 81% | 2585 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,150 psi | 46% | 1522 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 47,688 psi | 84% | 2625 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 44,889 psi | 79% | 2595 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,463 psi | 66% | 2549 fps | 96.5% |
| ReloadSwiss RS 60 | 39.9 gr | 80% | 30,690 psi | 54% | 2411 fps | 97.5% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,173 psi | 66% | 2552 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 40,712 psi | 72% | 2625 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 42,888 psi | 76% | 2526 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 37,405 psi | 66% | 2434 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 80% | 30,589 psi | 54% | 2333 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 42,409 psi | 75% | 2552 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,754 psi | 69% | 2503 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 35,534 psi | 63% | 2415 fps | 97.9% |
| Shooters World SW4350 | <<locked>> | 96% | 45,368 psi | 80% | 2625 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,026 psi | 60% | 2438 fps | 95.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,176 psi | 71% | 2507 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,870 psi | 69% | 2497 fps | 97.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,828 psi | 72% | 2444 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,620 psi | 59% | 2313 fps | 99.7% |
| Somchem S321 | <<locked>> | 80% | 45,440 psi | 80% | 2612 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 40,466 psi | 72% | 2451 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,914 psi | 71% | 2507 fps | 97.6% |
| Somchem S355 | <<locked>> | 80% | 31,749 psi | 56% | 2349 fps | 95.7% |
| Somchem S365 | <<locked>> | 86% | 27,528 psi | 49% | 2316 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 46,296 psi | 82% | 2513 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,075 psi | 73% | 2444 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,361 psi | 64% | 2421 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,362 psi | 66% | 2431 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 30,110 psi | 53% | 2290 fps | 96.7% |
| Vihtavuori N160 | <<locked>> | 90% | 37,289 psi | 66% | 2493 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 42,163 psi | 75% | 2533 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 80% | 35,766 psi | 63% | 2415 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 39,015 psi | 69% | 2546 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 98% | 34,229 psi | 61% | 2513 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 30,908 psi | 55% | 2316 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 41,524 psi | 73% | 2575 fps | 99.5% |
| Winchester 760 | <<locked>> | 96% | 46,673 psi | 83% | 2707 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,043 psi | 67% | 2497 fps | 97.8% |
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 | 145gr | Barnes LRX BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,815 fps; across all powders the maximum-charge window runs from 1,660 fps to 2,815 fps. Accurate 4350 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 60–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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, Alliant Power Pro 2000-MR rank at the top here: for 7 x 57 with the .284 | 145gr | Barnes LRX BT 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.