Load Specifications
Load data in caliber 7 x 57 with .284 | 145gr | Speer Boat-Tail bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, ReloadSwiss RS 60 and Alliant Reloder-17.
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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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% | 51,097 psi | 90% | 2638 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 49,429 psi | 87% | 2657 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 50,995 psi | 90% | 2717 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 49,574 psi | 88% | 2703 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 48,805 psi | 86% | 2769 fps | 98.8% |
| ADI AR 2206H | <<locked>> | 84% | 50,343 psi | 89% | 2730 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 88% | 48,211 psi | 85% | 2677 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 49,487 psi | 87% | 2684 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 82% | 49,835 psi | 88% | 2667 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 49,487 psi | 87% | 2831 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 51,111 psi | 90% | 2753 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 48,472 psi | 86% | 2717 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 98% | 50,473 psi | 89% | 2825 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 92% | 48,138 psi | 85% | 2808 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,537 psi | 68% | 2618 fps | 98.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,772 psi | 76% | 2766 fps | 97.4% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 49,559 psi | 88% | 2733 fps | 99% |
| Bofors RP3 | <<locked>> | 88% | 48,109 psi | 85% | 2710 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 51,053 psi | 90% | 2667 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 48,356 psi | 85% | 2707 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 49,110 psi | 87% | 2720 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 94% | 48,341 psi | 85% | 2759 fps | 96.4% |
| Hodgdon H4895 | <<locked>> | 84% | 50,807 psi | 90% | 2740 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,038 psi | 88% | 2759 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 49,908 psi | 88% | 2769 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,331 psi | 62% | 1696 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 48,588 psi | 86% | 2687 fps | 99.7% |
| IMR 3031 | <<locked>> | 84% | 50,430 psi | 89% | 2726 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 50,749 psi | 90% | 2713 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 86% | 50,662 psi | 90% | 2684 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 92% | 50,502 psi | 89% | 2713 fps | 96.6% |
| IMR 4831 | <<locked>> | 98% | 49,588 psi | 88% | 2762 fps | 99% |
| IMR 4895 | <<locked>> | 86% | 49,705 psi | 88% | 2749 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 82% | 49,487 psi | 87% | 2684 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 84% | 49,676 psi | 88% | 2707 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 50,038 psi | 88% | 2661 fps | 99.6% |
| Lovex S062 | <<locked>> | 88% | 50,604 psi | 89% | 2713 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 49,719 psi | 88% | 2703 fps | 97.8% |
| Lovex S070 | <<locked>> | 96% | 50,604 psi | 89% | 2740 fps | 97% |
| Norma 201 | <<locked>> | 84% | 49,052 psi | 87% | 2677 fps | 99.9% |
| Norma 202 | <<locked>> | 84% | 49,647 psi | 88% | 2684 fps | 100% |
| Norma 203B | <<locked>> | 88% | 50,778 psi | 90% | 2756 fps | 99.7% |
| Norma URP | <<locked>> | 96% | 48,399 psi | 86% | 2762 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 86% | 47,863 psi | 85% | 2726 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 98% | 50,531 psi | 89% | 2808 fps | 97.7% |
| Ramshot TAC | <<locked>> | 82% | 49,284 psi | 87% | 2690 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 48,805 psi | 86% | 2710 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,984 psi | 64% | 1742 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 49,371 psi | 87% | 2700 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 48,385 psi | 86% | 2776 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 47,863 psi | 85% | 2812 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 48,588 psi | 86% | 2792 fps | 98.6% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 48,385 psi | 86% | 2808 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 82% | 50,444 psi | 89% | 2667 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 49,603 psi | 88% | 2677 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 48,008 psi | 85% | 2703 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 49,719 psi | 88% | 2703 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 49,676 psi | 88% | 2707 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 50,604 psi | 89% | 2713 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 50,604 psi | 89% | 2740 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 49,487 psi | 87% | 2762 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 51,068 psi | 90% | 2723 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 48,747 psi | 86% | 2700 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 50,531 psi | 89% | 2621 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 50,647 psi | 90% | 2625 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 49,879 psi | 88% | 2657 fps | 96.5% |
| Somchem S335 | <<locked>> | 84% | 49,980 psi | 88% | 2625 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 50,546 psi | 89% | 2713 fps | 99.6% |
| Somchem S355 | <<locked>> | 90% | 48,559 psi | 86% | 2703 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,458 psi | 87% | 2818 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 50,792 psi | 90% | 2612 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 49,255 psi | 87% | 2651 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 49,966 psi | 88% | 2664 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 49,966 psi | 88% | 2690 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 50,662 psi | 90% | 2759 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 82% | 49,545 psi | 88% | 2680 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 48,428 psi | 86% | 2661 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 49,835 psi | 88% | 2762 fps | 98.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,032 psi | 74% | 2697 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 51,097 psi | 90% | 2743 fps | 99.9% |
| Winchester 748 | <<locked>> | 82% | 49,269 psi | 87% | 2726 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 48,631 psi | 86% | 2766 fps | 96.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,301 psi | 61% | 2605 fps | 97.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 48,298 psi | 85% | 2703 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% | 48,283 psi | 85% | 2598 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,683 psi | 72% | 2516 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,848 psi | 85% | 2667 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 38,493 psi | 68% | 2510 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,577 psi | 61% | 2490 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 44,222 psi | 78% | 2621 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 80% | 37,623 psi | 67% | 2474 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,282 psi | 82% | 2631 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 46,615 psi | 82% | 2621 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,205 psi | 71% | 2648 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,376 psi | 66% | 2500 fps | 98.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,943 psi | 71% | 2556 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 35,041 psi | 62% | 2503 fps | 95.4% |
| Alliant Reloder-17 | 42.9 gr | 80% | 32,082 psi | 57% | 2457 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,879 psi | 56% | 2454 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,231 psi | 66% | 2641 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,352 psi | 77% | 2625 fps | 97.9% |
| Bofors RP3 | <<locked>> | 80% | 36,956 psi | 65% | 2500 fps | 98.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,080 psi | 85% | 2621 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,150 psi | 80% | 2651 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 37,681 psi | 67% | 2500 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 92% | 45,426 psi | 80% | 2707 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 44,628 psi | 79% | 2631 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,124 psi | 53% | 2352 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,785 psi | 72% | 2608 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,397 psi | 47% | 1519 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,888 psi | 76% | 2585 fps | 99.1% |
| IMR 3031 | <<locked>> | 80% | 44,483 psi | 79% | 2631 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,494 psi | 70% | 2507 fps | 97.6% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,889 psi | 79% | 2582 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,759 psi | 79% | 2608 fps | 95.1% |
| IMR 4831 | <<locked>> | 88% | 35,781 psi | 63% | 2500 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 40,930 psi | 72% | 2589 fps | 98.4% |
| IMR 8208 XBR | <<locked>> | 80% | 46,282 psi | 82% | 2631 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 43,482 psi | 77% | 2605 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,309 psi | 78% | 2562 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 39,436 psi | 70% | 2513 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 38,943 psi | 69% | 2503 fps | 95.1% |
| Lovex S070 | <<locked>> | 92% | 44,715 psi | 79% | 2638 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 43,308 psi | 77% | 2575 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 43,787 psi | 77% | 2589 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,334 psi | 70% | 2546 fps | 98% |
| Norma URP | <<locked>> | 86% | 34,911 psi | 62% | 2490 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 38,885 psi | 69% | 2559 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 92% | 41,495 psi | 73% | 2638 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 46,151 psi | 82% | 2635 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,643 psi | 81% | 2654 fps | 99.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,818 psi | 47% | 1555 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,482 psi | 77% | 2595 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,105 psi | 74% | 2661 fps | 98.2% |
| ReloadSwiss RS 60 | 42.9 gr | 80% | 34,156 psi | 60% | 2523 fps | 99.1% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,840 psi | 65% | 2562 fps | 95.7% |
| ReloadSwiss RS 70 | 49.1 gr | 90% | 39,697 psi | 70% | 2631 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 47,413 psi | 84% | 2618 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,437 psi | 73% | 2533 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 34,751 psi | 61% | 2448 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 38,943 psi | 69% | 2503 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,482 psi | 77% | 2605 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,436 psi | 70% | 2513 fps | 99% |
| Shooters World SW4350 | <<locked>> | 92% | 44,715 psi | 79% | 2638 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,737 psi | 63% | 2493 fps | 96.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,498 psi | 79% | 2612 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,888 psi | 76% | 2595 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,759 psi | 79% | 2533 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,246 psi | 66% | 2402 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,656 psi | 77% | 2552 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 44,251 psi | 78% | 2533 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,150 psi | 78% | 2605 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 35,491 psi | 63% | 2448 fps | 97.5% |
| Somchem S365 | <<locked>> | 82% | 27,456 psi | 49% | 2329 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 45,049 psi | 80% | 2526 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,756 psi | 72% | 2513 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,423 psi | 73% | 2523 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,852 psi | 60% | 2392 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 86% | 36,579 psi | 65% | 2497 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 46,514 psi | 82% | 2631 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 39,798 psi | 70% | 2510 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 36,071 psi | 64% | 2497 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 92% | 32,169 psi | 57% | 2477 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,950 psi | 53% | 2310 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 45,963 psi | 81% | 2671 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 45,426 psi | 80% | 2707 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,211 psi | 53% | 2474 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,380 psi | 75% | 2598 fps | 99.1% |
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 107 powders for 7 x 57 loaded with the .284 | 145gr | Speer Boat-Tail. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,831 fps; across all powders the maximum-charge window runs from 1,696 fps to 2,831 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 7 x 57 with the .284 | 145gr | Speer Boat-Tail they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 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.