Load Specifications
Load data in caliber 7 x 57 with .284 | 145gr | Speer Grand Slam 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 2495 | <<locked>> | 86% | 49,763 psi | 88% | 2664 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 49,864 psi | 88% | 2707 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 49,052 psi | 87% | 2772 fps | 98.9% |
| ADI AR 2206H | <<locked>> | 84% | 50,546 psi | 89% | 2733 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 88% | 48,443 psi | 86% | 2684 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 49,472 psi | 87% | 2684 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 82% | 50,198 psi | 89% | 2671 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 49,705 psi | 88% | 2835 fps | 99.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 48,283 psi | 85% | 2707 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 86% | 48,718 psi | 86% | 2723 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 98% | 50,662 psi | 90% | 2831 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 92% | 48,327 psi | 85% | 2812 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,740 psi | 68% | 2625 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,960 psi | 76% | 2772 fps | 97.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 49,777 psi | 88% | 2740 fps | 99% |
| Bofors RP3 | <<locked>> | 88% | 48,356 psi | 85% | 2717 fps | 99.9% |
| Bofors RP7 | <<locked>> | 92% | 48,936 psi | 87% | 2684 fps | 95.7% |
| Hodgdon BL-C2 | <<locked>> | 82% | 48,602 psi | 86% | 2710 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 49,342 psi | 87% | 2723 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 94% | 48,878 psi | 86% | 2772 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 84% | 51,082 psi | 90% | 2746 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,241 psi | 89% | 2762 fps | 99.9% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 50,154 psi | 89% | 2772 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,418 psi | 63% | 1699 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 48,849 psi | 86% | 2694 fps | 99.7% |
| IMR 3031 | <<locked>> | 84% | 50,734 psi | 90% | 2730 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 50,981 psi | 90% | 2717 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 86% | 50,879 psi | 90% | 2690 fps | 96.8% |
| IMR 4350 | <<locked>> | 96% | 49,139 psi | 87% | 2710 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 50,705 psi | 90% | 2717 fps | 96.6% |
| IMR 4831 | <<locked>> | 98% | 49,806 psi | 88% | 2769 fps | 99% |
| IMR 4895 | <<locked>> | 86% | 49,966 psi | 88% | 2753 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 82% | 49,472 psi | 87% | 2684 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 84% | 49,951 psi | 88% | 2713 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 50,299 psi | 89% | 2664 fps | 99.6% |
| Lovex S062 | <<locked>> | 88% | 50,836 psi | 90% | 2717 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 50,212 psi | 89% | 2713 fps | 97.9% |
| Lovex S070 | <<locked>> | 96% | 50,778 psi | 90% | 2743 fps | 97% |
| Norma 201 | <<locked>> | 84% | 49,313 psi | 87% | 2680 fps | 99.9% |
| Norma 202 | <<locked>> | 84% | 49,893 psi | 88% | 2687 fps | 100% |
| Norma 203B | <<locked>> | 88% | 51,024 psi | 90% | 2759 fps | 99.7% |
| Norma URP | <<locked>> | 96% | 48,646 psi | 86% | 2766 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 86% | 48,080 psi | 85% | 2733 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 98% | 50,705 psi | 90% | 2812 fps | 97.7% |
| Ramshot TAC | <<locked>> | 82% | 49,501 psi | 88% | 2694 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 82% | 49,037 psi | 87% | 2713 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,795 psi | 63% | 1739 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 49,574 psi | 88% | 2703 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 48,646 psi | 86% | 2779 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 48,080 psi | 85% | 2815 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 48,805 psi | 86% | 2795 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 48,501 psi | 86% | 2808 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 82% | 50,401 psi | 89% | 2667 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 49,893 psi | 88% | 2680 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 48,182 psi | 85% | 2707 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 92% | 48,936 psi | 87% | 2684 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 94% | 50,212 psi | 89% | 2713 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 49,951 psi | 88% | 2713 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 50,836 psi | 90% | 2717 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 50,778 psi | 90% | 2743 fps | 97% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 49,980 psi | 88% | 2769 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 47,863 psi | 85% | 2671 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 48,979 psi | 87% | 2703 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 50,792 psi | 90% | 2628 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 50,850 psi | 90% | 2628 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 50,067 psi | 89% | 2661 fps | 96.6% |
| Somchem S335 | <<locked>> | 84% | 50,256 psi | 89% | 2628 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 50,763 psi | 90% | 2720 fps | 99.6% |
| Somchem S355 | <<locked>> | 90% | 48,805 psi | 86% | 2707 fps | 99.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,647 psi | 88% | 2822 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 51,082 psi | 90% | 2618 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 49,545 psi | 88% | 2654 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 50,227 psi | 89% | 2667 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 50,183 psi | 89% | 2694 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 50,850 psi | 90% | 2762 fps | 99% |
| Vihtavuori N530 | <<locked>> | 82% | 49,821 psi | 88% | 2684 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 48,660 psi | 86% | 2664 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 50,067 psi | 89% | 2766 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 42,221 psi | 75% | 2697 fps | 98.3% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 47,921 psi | 85% | 2694 fps | 99.8% |
| Winchester 748 | <<locked>> | 82% | 49,545 psi | 88% | 2730 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 48,878 psi | 86% | 2772 fps | 96.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,650 psi | 61% | 2615 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 84% | 48,472 psi | 86% | 2707 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 2495 | <<locked>> | 80% | 40,988 psi | 72% | 2523 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 38,754 psi | 69% | 2516 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 34,824 psi | 62% | 2493 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 44,469 psi | 79% | 2625 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 37,855 psi | 67% | 2480 fps | 97% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,528 psi | 82% | 2635 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 46,949 psi | 83% | 2625 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,408 psi | 71% | 2654 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,376 psi | 66% | 2500 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,190 psi | 71% | 2562 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 35,027 psi | 62% | 2503 fps | 95.4% |
| Alliant Reloder-17 | 43.1 gr | 80% | 32,271 psi | 57% | 2461 fps | 96.2% |
| Alliant Reloder-23 | <<locked>> | 92% | 30,182 psi | 53% | 2405 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 96% | 37,347 psi | 66% | 2644 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,555 psi | 77% | 2628 fps | 98% |
| Bofors RP3 | <<locked>> | 80% | 37,159 psi | 66% | 2507 fps | 98.4% |
| Bofors RP7 | <<locked>> | 90% | 46,021 psi | 81% | 2631 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,397 psi | 80% | 2657 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 80% | 37,927 psi | 67% | 2507 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 92% | 45,614 psi | 81% | 2713 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 44,846 psi | 79% | 2638 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 30,313 psi | 54% | 2356 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,727 psi | 72% | 2605 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,527 psi | 47% | 1522 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,120 psi | 76% | 2592 fps | 99.1% |
| IMR 3031 | <<locked>> | 80% | 44,469 psi | 79% | 2631 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,740 psi | 70% | 2513 fps | 97.7% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,802 psi | 79% | 2582 fps | 95.3% |
| IMR 4350 | <<locked>> | 94% | 45,934 psi | 81% | 2654 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,962 psi | 79% | 2612 fps | 95.2% |
| IMR 4831 | <<locked>> | 86% | 33,721 psi | 60% | 2451 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 41,147 psi | 73% | 2592 fps | 98.5% |
| IMR 8208 XBR | <<locked>> | 80% | 46,528 psi | 82% | 2635 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 43,743 psi | 77% | 2608 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 44,556 psi | 79% | 2566 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 39,653 psi | 70% | 2516 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 39,131 psi | 69% | 2507 fps | 95.2% |
| Lovex S070 | <<locked>> | 92% | 44,918 psi | 79% | 2641 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 43,584 psi | 77% | 2582 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 43,758 psi | 77% | 2589 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,552 psi | 70% | 2549 fps | 98.1% |
| Norma URP | <<locked>> | 86% | 35,099 psi | 62% | 2493 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 39,117 psi | 69% | 2562 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 92% | 41,713 psi | 74% | 2641 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 46,383 psi | 82% | 2638 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,890 psi | 81% | 2661 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,701 psi | 47% | 1555 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,685 psi | 77% | 2598 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,119 psi | 74% | 2661 fps | 98.2% |
| ReloadSwiss RS 60 | 43.1 gr | 80% | 34,360 psi | 61% | 2530 fps | 99.2% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 37,028 psi | 65% | 2569 fps | 95.8% |
| ReloadSwiss RS 70 | 49.3 gr | 90% | 39,842 psi | 70% | 2635 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 47,732 psi | 84% | 2625 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,437 psi | 73% | 2533 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 34,969 psi | 62% | 2451 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 90% | 46,021 psi | 81% | 2631 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 86% | 39,131 psi | 69% | 2507 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,743 psi | 77% | 2608 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 39,653 psi | 70% | 2516 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 44,918 psi | 79% | 2641 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,708 psi | 63% | 2493 fps | 96.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,744 psi | 79% | 2615 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,830 psi | 76% | 2592 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,005 psi | 80% | 2536 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,449 psi | 66% | 2405 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,874 psi | 78% | 2556 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 44,512 psi | 79% | 2536 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,382 psi | 78% | 2612 fps | 98.9% |
| Somchem S355 | <<locked>> | 80% | 35,737 psi | 63% | 2454 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 27,630 psi | 49% | 2336 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 45,339 psi | 80% | 2533 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,031 psi | 73% | 2520 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,669 psi | 74% | 2526 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,069 psi | 60% | 2395 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 84% | 34,519 psi | 61% | 2448 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 46,760 psi | 83% | 2635 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 40,016 psi | 71% | 2513 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 36,245 psi | 64% | 2500 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 92% | 32,358 psi | 57% | 2480 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,081 psi | 53% | 2313 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 46,180 psi | 82% | 2674 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 45,876 psi | 81% | 2717 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 30,356 psi | 54% | 2480 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,337 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 104 powders for 7 x 57 loaded with the .284 | 145gr | Speer Grand Slam. 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. Accurate 3100 gives the best case fill at 100 %, and 104 of the 104 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 1:13.0 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 Grand Slam 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.