Load Specifications
Load data in caliber 7 x 57 with .284 | 145gr | Speer Hot-Cor bullet and 85 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 2495 | <<locked>> | 86% | 49,937 psi | 88% | 2664 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 50,038 psi | 88% | 2710 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 49,269 psi | 87% | 2776 fps | 98.9% |
| ADI AR 2206H | <<locked>> | 84% | 50,430 psi | 89% | 2733 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 88% | 48,646 psi | 86% | 2687 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 49,632 psi | 88% | 2687 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 82% | 50,038 psi | 88% | 2671 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 49,545 psi | 88% | 2835 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 48,167 psi | 85% | 2703 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 86% | 48,892 psi | 86% | 2726 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 98% | 50,836 psi | 90% | 2835 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 92% | 48,501 psi | 86% | 2815 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,609 psi | 68% | 2621 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 43,105 psi | 76% | 2776 fps | 97.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 49,995 psi | 88% | 2743 fps | 99.1% |
| Bofors RP3 | <<locked>> | 88% | 48,530 psi | 86% | 2720 fps | 99.9% |
| Bofors RP7 | <<locked>> | 92% | 49,081 psi | 87% | 2687 fps | 95.8% |
| Hodgdon BL-C2 | <<locked>> | 82% | 48,486 psi | 86% | 2710 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 49,501 psi | 88% | 2726 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 94% | 48,747 psi | 86% | 2769 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 84% | 50,952 psi | 90% | 2743 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,430 psi | 89% | 2766 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 50,038 psi | 88% | 2772 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 94% | 49,023 psi | 87% | 2795 fps | 95.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,360 psi | 63% | 1699 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 48,994 psi | 87% | 2697 fps | 99.7% |
| IMR 3031 | <<locked>> | 84% | 50,937 psi | 90% | 2733 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 51,155 psi | 90% | 2720 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 86% | 51,039 psi | 90% | 2694 fps | 96.8% |
| IMR 4350 | <<locked>> | 96% | 49,008 psi | 87% | 2710 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 50,879 psi | 90% | 2720 fps | 96.7% |
| IMR 4831 | <<locked>> | 98% | 49,995 psi | 88% | 2769 fps | 99.1% |
| IMR 4895 | <<locked>> | 86% | 50,111 psi | 89% | 2756 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 82% | 49,632 psi | 88% | 2687 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 84% | 49,821 psi | 88% | 2710 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 50,154 psi | 89% | 2664 fps | 99.6% |
| Lovex S062 | <<locked>> | 88% | 51,010 psi | 90% | 2720 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 50,067 psi | 89% | 2713 fps | 97.9% |
| Lovex S070 | <<locked>> | 96% | 50,966 psi | 90% | 2746 fps | 97.1% |
| Norma 201 | <<locked>> | 84% | 49,501 psi | 88% | 2684 fps | 100% |
| Norma 202 | <<locked>> | 84% | 49,777 psi | 88% | 2687 fps | 100% |
| Norma 203B | <<locked>> | 86% | 48,167 psi | 85% | 2713 fps | 99.5% |
| Norma URP | <<locked>> | 96% | 48,834 psi | 86% | 2769 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 86% | 47,964 psi | 85% | 2730 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 98% | 50,865 psi | 90% | 2812 fps | 97.8% |
| Ramshot TAC | <<locked>> | 82% | 49,676 psi | 88% | 2697 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 82% | 49,226 psi | 87% | 2717 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,013 psi | 64% | 1742 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 49,792 psi | 88% | 2710 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 48,515 psi | 86% | 2779 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 48,269 psi | 85% | 2818 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 48,979 psi | 87% | 2795 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 48,689 psi | 86% | 2815 fps | 98.3% |
| Rottweil R 901 | <<locked>> | 82% | 50,575 psi | 89% | 2671 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 50,053 psi | 88% | 2684 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 48,399 psi | 86% | 2710 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 92% | 49,081 psi | 87% | 2687 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 94% | 50,067 psi | 89% | 2713 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 49,821 psi | 88% | 2710 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 51,010 psi | 90% | 2720 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 50,966 psi | 90% | 2746 fps | 97.1% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 49,850 psi | 88% | 2766 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 48,066 psi | 85% | 2674 fps | 98.2% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 48,863 psi | 86% | 2700 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 50,995 psi | 90% | 2631 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 51,039 psi | 90% | 2631 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 50,241 psi | 89% | 2667 fps | 96.6% |
| Somchem S335 | <<locked>> | 84% | 50,430 psi | 89% | 2631 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 50,923 psi | 90% | 2723 fps | 99.7% |
| Somchem S355 | <<locked>> | 90% | 48,936 psi | 87% | 2710 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,821 psi | 88% | 2822 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 48,182 psi | 85% | 2575 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 49,414 psi | 87% | 2654 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 50,372 psi | 89% | 2671 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 50,053 psi | 88% | 2690 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 51,039 psi | 90% | 2766 fps | 99% |
| Vihtavuori N530 | <<locked>> | 82% | 50,038 psi | 88% | 2687 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 48,530 psi | 86% | 2661 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 50,212 psi | 89% | 2769 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,366 psi | 75% | 2700 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 48,109 psi | 85% | 2697 fps | 99.8% |
| Winchester 748 | <<locked>> | 82% | 49,690 psi | 88% | 2733 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 49,023 psi | 87% | 2772 fps | 96.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,519 psi | 61% | 2615 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 84% | 48,660 psi | 86% | 2710 fps | 99.8% |
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% | 41,118 psi | 73% | 2526 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 38,885 psi | 69% | 2520 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,954 psi | 62% | 2497 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 44,614 psi | 79% | 2631 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 37,985 psi | 67% | 2480 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,702 psi | 83% | 2638 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 46,833 psi | 83% | 2625 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,553 psi | 72% | 2657 fps | 97.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,507 psi | 66% | 2503 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,350 psi | 71% | 2566 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 35,128 psi | 62% | 2510 fps | 95.5% |
| Alliant Reloder-17 | 43.2 gr | 80% | 32,372 psi | 57% | 2467 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 92% | 30,269 psi | 54% | 2408 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,492 psi | 66% | 2648 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,700 psi | 77% | 2631 fps | 98% |
| Bofors RP3 | <<locked>> | 80% | 37,115 psi | 66% | 2507 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 46,137 psi | 82% | 2635 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,542 psi | 81% | 2661 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 38,072 psi | 67% | 2510 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 92% | 45,759 psi | 81% | 2717 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 45,063 psi | 80% | 2641 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,255 psi | 53% | 2356 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,901 psi | 72% | 2608 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 92% | 45,759 psi | 81% | 2733 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,484 psi | 47% | 1522 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,033 psi | 76% | 2592 fps | 99.1% |
| IMR 3031 | <<locked>> | 80% | 44,701 psi | 79% | 2635 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,885 psi | 71% | 2516 fps | 97.8% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,991 psi | 80% | 2585 fps | 95.4% |
| IMR 4350 | <<locked>> | 94% | 46,064 psi | 81% | 2657 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,860 psi | 79% | 2612 fps | 95.2% |
| IMR 4831 | <<locked>> | 86% | 33,866 psi | 60% | 2454 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 41,350 psi | 73% | 2595 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 46,702 psi | 83% | 2638 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 43,613 psi | 77% | 2608 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,454 psi | 79% | 2566 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 39,610 psi | 70% | 2516 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 39,291 psi | 69% | 2510 fps | 95.3% |
| Lovex S070 | <<locked>> | 92% | 44,788 psi | 79% | 2638 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 43,743 psi | 77% | 2585 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 43,976 psi | 78% | 2592 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,740 psi | 70% | 2556 fps | 98.2% |
| Norma URP | <<locked>> | 86% | 35,244 psi | 62% | 2500 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 39,262 psi | 69% | 2566 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 92% | 41,843 psi | 74% | 2648 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 46,557 psi | 82% | 2644 fps | 97.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,050 psi | 81% | 2661 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,643 psi | 47% | 1555 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,845 psi | 78% | 2602 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,293 psi | 75% | 2664 fps | 98.2% |
| ReloadSwiss RS 60 | 43.2 gr | 80% | 34,461 psi | 61% | 2533 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,970 psi | 65% | 2566 fps | 95.7% |
| ReloadSwiss RS 70 | 49.3 gr | 90% | 39,726 psi | 70% | 2631 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 47,601 psi | 84% | 2625 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,597 psi | 74% | 2536 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 34,911 psi | 62% | 2448 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 46,137 psi | 82% | 2635 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,291 psi | 69% | 2510 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,613 psi | 77% | 2608 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,610 psi | 70% | 2516 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 44,788 psi | 79% | 2638 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,824 psi | 63% | 2497 fps | 97% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,933 psi | 79% | 2618 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,018 psi | 76% | 2598 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,918 psi | 79% | 2536 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,362 psi | 66% | 2405 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,990 psi | 78% | 2559 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 44,686 psi | 79% | 2539 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,512 psi | 79% | 2615 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 35,868 psi | 63% | 2457 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 27,746 psi | 49% | 2339 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 45,237 psi | 80% | 2530 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,959 psi | 72% | 2520 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,568 psi | 73% | 2526 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,982 psi | 60% | 2395 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 86% | 36,912 psi | 65% | 2503 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 80% | 46,659 psi | 82% | 2635 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 40,147 psi | 71% | 2520 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 36,172 psi | 64% | 2500 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 92% | 32,489 psi | 57% | 2484 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,182 psi | 53% | 2316 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 46,383 psi | 82% | 2677 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 45,759 psi | 81% | 2717 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,443 psi | 54% | 2484 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,467 psi | 75% | 2602 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 85 powders for 7 x 57 loaded with the .284 | 145gr | Speer Hot-Cor. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,835 fps; across all powders the maximum-charge window runs from 1,699 fps to 2,835 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.284" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, Hodgdon Hybrid 100V 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 Hot-Cor 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.