Load Specifications
Load data in caliber 7 x 57 with .284 | 140gr | Sierra HPBT GameKing bullet and 83 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, 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>> | 84% | 50,908 psi | 90% | 2667 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 48,733 psi | 86% | 2684 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 50,575 psi | 89% | 2743 fps | 100% |
| Accurate 4064 | <<locked>> | 90% | 48,892 psi | 86% | 2726 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,966 psi | 90% | 2831 fps | 98.6% |
| ADI AR 2206H | <<locked>> | 86% | 50,009 psi | 88% | 2753 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 92% | 50,952 psi | 90% | 2749 fps | 99% |
| ADI Benchmark 8208 | <<locked>> | 84% | 49,197 psi | 87% | 2707 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 84% | 49,342 psi | 87% | 2697 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 49,095 psi | 87% | 2848 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 50,546 psi | 89% | 2772 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 90% | 51,010 psi | 90% | 2785 fps | 99.1% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,980 psi | 88% | 2841 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 96% | 50,778 psi | 90% | 2881 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,433 psi | 63% | 2566 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 49,443 psi | 87% | 2759 fps | 98.5% |
| Bofors RP3 | <<locked>> | 92% | 50,662 psi | 90% | 2782 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 48,095 psi | 85% | 2648 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 84% | 47,979 psi | 85% | 2733 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 82% | 49,197 psi | 87% | 2815 fps | 98.9% |
| Hodgdon H380 | <<locked>> | 90% | 48,660 psi | 86% | 2740 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 98% | 50,894 psi | 90% | 2828 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 86% | 50,517 psi | 89% | 2762 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,890 psi | 81% | 2717 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 49,197 psi | 87% | 2789 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,114 psi | 62% | 1706 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 48,370 psi | 86% | 2713 fps | 99.4% |
| IMR 3031 | <<locked>> | 86% | 50,053 psi | 88% | 2756 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 50,299 psi | 89% | 2730 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 88% | 50,821 psi | 90% | 2707 fps | 95.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,515 psi | 86% | 2776 fps | 98.3% |
| IMR 4895 | <<locked>> | 88% | 49,284 psi | 87% | 2772 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 84% | 49,197 psi | 87% | 2707 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 86% | 49,197 psi | 87% | 2733 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 49,951 psi | 88% | 2684 fps | 99.3% |
| Lovex S062 | <<locked>> | 90% | 49,980 psi | 88% | 2733 fps | 99.8% |
| Lovex S065 | <<locked>> | 96% | 49,429 psi | 87% | 2723 fps | 97.1% |
| Lovex S070 | <<locked>> | 98% | 49,705 psi | 88% | 2749 fps | 96% |
| Norma 201 | <<locked>> | 86% | 48,979 psi | 87% | 2703 fps | 99.8% |
| Norma 202 | <<locked>> | 86% | 49,240 psi | 87% | 2710 fps | 100% |
| Norma 203B | <<locked>> | 90% | 50,198 psi | 89% | 2776 fps | 99.3% |
| Norma URPᴾ | <<locked>> | 100% | 50,531 psi | 89% | 2825 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 90% | 50,430 psi | 89% | 2799 fps | 99.3% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,588 psi | 88% | 2815 fps | 96.7% |
| Ramshot TAC | <<locked>> | 84% | 49,327 psi | 87% | 2713 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 48,617 psi | 86% | 2733 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 82% | 49,966 psi | 88% | 2703 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,447 psi | 63% | 1745 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 49,153 psi | 87% | 2717 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 51,053 psi | 90% | 2851 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 50,386 psi | 89% | 2881 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,749 psi | 90% | 2854 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 47,979 psi | 85% | 2818 fps | 97.3% |
| Rottweil R 901 | <<locked>> | 84% | 49,937 psi | 88% | 2690 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 49,284 psi | 87% | 2700 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 94% | 50,546 psi | 89% | 2772 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 96% | 49,429 psi | 87% | 2723 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 86% | 49,197 psi | 87% | 2733 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 49,980 psi | 88% | 2733 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 98% | 49,705 psi | 88% | 2749 fps | 96% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 48,965 psi | 87% | 2782 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 50,676 psi | 90% | 2743 fps | 98% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 48,515 psi | 86% | 2723 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 50,633 psi | 90% | 2654 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 50,589 psi | 89% | 2654 fps | 100% |
| Somchem S321 | <<locked>> | 82% | 50,067 psi | 89% | 2740 fps | 99.9% |
| Somchem S335 | <<locked>> | 86% | 50,067 psi | 89% | 2654 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 50,488 psi | 89% | 2740 fps | 99.3% |
| Somchem S355 | <<locked>> | 94% | 51,184 psi | 90% | 2772 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,223 psi | 80% | 2776 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 82% | 50,415 psi | 89% | 2621 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 50,778 psi | 90% | 2644 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 48,602 psi | 86% | 2674 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 49,690 psi | 88% | 2690 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 49,240 psi | 87% | 2710 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 98% | 49,980 psi | 88% | 2776 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 84% | 49,298 psi | 87% | 2703 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 90% | 51,068 psi | 90% | 2730 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 48,892 psi | 86% | 2776 fps | 98% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,985 psi | 67% | 2641 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 50,502 psi | 89% | 2756 fps | 99.7% |
| Winchester 748 | <<locked>> | 84% | 48,805 psi | 86% | 2749 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 86% | 48,022 psi | 85% | 2730 fps | 99.4% |
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% | 44,860 psi | 79% | 2575 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,608 psi | 66% | 2497 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,309 psi | 78% | 2641 fps | 99.9% |
| Accurate 4064 | <<locked>> | 80% | 35,520 psi | 63% | 2480 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 36,013 psi | 64% | 2552 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 41,249 psi | 73% | 2589 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 80% | 35,244 psi | 62% | 2444 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,250 psi | 76% | 2602 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 80% | 43,149 psi | 76% | 2605 fps | 100% |
| Alliant Power Pro 2000-MR | 41.7 gr | 80% | 37,362 psi | 66% | 2602 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,548 psi | 61% | 2464 fps | 96.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,086 psi | 66% | 2520 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,767 psi | 65% | 2566 fps | 95.1% |
| Alliant Reloder-17 | 42.1 gr | 82% | 31,879 psi | 56% | 2470 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 98% | 33,272 psi | 59% | 2510 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,292 psi | 71% | 2589 fps | 96.5% |
| Bofors RP3 | <<locked>> | 80% | 34,040 psi | 60% | 2464 fps | 96.9% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,165 psi | 80% | 2598 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,843 psi | 74% | 2621 fps | 99.3% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,050 psi | 81% | 2759 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 84% | 39,914 psi | 71% | 2572 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 96% | 47,645 psi | 84% | 2772 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 41,582 psi | 74% | 2602 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 31,647 psi | 56% | 2411 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,579 psi | 66% | 2569 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,107 psi | 46% | 1522 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,045 psi | 71% | 2556 fps | 98% |
| IMR 3031 | <<locked>> | 80% | 40,944 psi | 72% | 2605 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,912 psi | 65% | 2477 fps | 96.2% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,688 psi | 84% | 2654 fps | 95.1% |
| IMR 4831 | <<locked>> | 92% | 37,289 psi | 66% | 2562 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 37,956 psi | 67% | 2552 fps | 97.1% |
| IMR 8208 XBR | <<locked>> | 80% | 43,250 psi | 76% | 2602 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 80% | 39,987 psi | 71% | 2572 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 41,829 psi | 74% | 2536 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 36,796 psi | 65% | 2484 fps | 98% |
| Lovex S065 | <<locked>> | 92% | 43,540 psi | 77% | 2618 fps | 95.7% |
| Lovex S070 | <<locked>> | 96% | 46,934 psi | 83% | 2697 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 40,582 psi | 72% | 2549 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 40,698 psi | 72% | 2562 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 36,463 psi | 64% | 2510 fps | 96.6% |
| Norma URP | <<locked>> | 90% | 36,709 psi | 65% | 2556 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 35,969 psi | 64% | 2520 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 96% | 43,613 psi | 77% | 2700 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 43,279 psi | 77% | 2602 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,511 psi | 75% | 2625 fps | 98.1% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,949 psi | 83% | 2654 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,237 psi | 46% | 1558 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 46,122 psi | 82% | 2664 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,508 psi | 68% | 2615 fps | 96.6% |
| ReloadSwiss RS 60 | 41.1 gr | 80% | 31,792 psi | 56% | 2480 fps | 97.7% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 38,595 psi | 68% | 2628 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,858 psi | 74% | 2694 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 44,440 psi | 79% | 2598 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,508 psi | 68% | 2500 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 80% | 31,937 psi | 56% | 2405 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 92% | 43,540 psi | 77% | 2618 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,987 psi | 71% | 2572 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 36,796 psi | 65% | 2484 fps | 98% |
| Shooters World SW4350 | <<locked>> | 96% | 46,934 psi | 83% | 2697 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,967 psi | 58% | 2451 fps | 95.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,423 psi | 73% | 2575 fps | 95.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,813 psi | 70% | 2559 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,032 psi | 74% | 2513 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,751 psi | 61% | 2379 fps | 99.7% |
| Somchem S321 | <<locked>> | 80% | 46,688 psi | 83% | 2684 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 41,669 psi | 74% | 2516 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,031 psi | 73% | 2575 fps | 97.7% |
| Somchem S355 | <<locked>> | 80% | 32,982 psi | 58% | 2418 fps | 95.9% |
| Somchem S365 | <<locked>> | 86% | 28,863 psi | 51% | 2395 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 47,543 psi | 84% | 2579 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,250 psi | 75% | 2510 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,695 psi | 67% | 2493 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,479 psi | 68% | 2497 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 31,241 psi | 55% | 2356 fps | 96.8% |
| Vihtavuori N160 | <<locked>> | 90% | 38,276 psi | 68% | 2556 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 43,468 psi | 77% | 2602 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 80% | 37,086 psi | 66% | 2484 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 90% | 37,681 psi | 67% | 2562 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 98% | 35,476 psi | 63% | 2585 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,807 psi | 56% | 2379 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 42,714 psi | 76% | 2644 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,233 psi | 69% | 2562 fps | 97.9% |
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 83 powders for 7 x 57 loaded with the .284 | 140gr | Sierra HPBT GameKing. Alliant Reloder-17 delivers the highest muzzle velocity at 2,881 fps; across all powders the maximum-charge window runs from 1,706 fps to 2,881 fps. Accurate 4350 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:10.0 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 7 x 57 with the .284 | 140gr | Sierra HPBT GameKing 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.