Load Specifications
Load data in caliber 7 x 57 R with .284 | 127gr | Geco ZERO LG bullet and 61 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 Ramshot Big Game.
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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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 84% | 43,888 psi | 89% | 2674 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 42,946 psi | 87% | 2713 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 42,801 psi | 87% | 2723 fps | 99.3% |
| Accurate 4064 | <<locked>> | 92% | 43,308 psi | 88% | 2753 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 86% | 43,047 psi | 87% | 2726 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 92% | 44,063 psi | 89% | 2723 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 84% | 42,728 psi | 87% | 2694 fps | 98% |
| Alliant AR-Comp | <<locked>> | 86% | 44,280 psi | 90% | 2749 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 42,946 psi | 87% | 2743 fps | 97.8% |
| Alliant Reloder-15 | <<locked>> | 90% | 43,758 psi | 89% | 2762 fps | 96.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 42,946 psi | 87% | 2825 fps | 97.3% |
| Bofors RP3 | <<locked>> | 92% | 42,221 psi | 86% | 2743 fps | 97.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 42,337 psi | 86% | 2644 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 86% | 43,540 psi | 88% | 2762 fps | 98.7% |
| Hodgdon CFE223 | <<locked>> | 82% | 41,887 psi | 85% | 2779 fps | 96% |
| Hodgdon H4895 | <<locked>> | 86% | 43,381 psi | 88% | 2740 fps | 97.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 38,841 psi | 79% | 2671 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 44,512 psi | 90% | 2812 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,982 psi | 69% | 1749 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 42,061 psi | 85% | 2697 fps | 97.1% |
| IMR 3031 | <<locked>> | 86% | 42,250 psi | 86% | 2749 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 43,468 psi | 88% | 2707 fps | 96.5% |
| IMR 4895 | <<locked>> | 88% | 41,771 psi | 85% | 2736 fps | 96.7% |
| IMR 8208 XBR | <<locked>> | 84% | 42,728 psi | 87% | 2694 fps | 98% |
| Lovex D073.5 | <<locked>> | 82% | 44,541 psi | 90% | 2723 fps | 99% |
| Lovex D073.6 | <<locked>> | 88% | 44,237 psi | 90% | 2762 fps | 99.5% |
| Lovex S060 | <<locked>> | 86% | 43,947 psi | 89% | 2674 fps | 97.1% |
| Lovex S062 | <<locked>> | 90% | 42,786 psi | 87% | 2710 fps | 98.1% |
| Norma 201 | <<locked>> | 88% | 44,585 psi | 90% | 2730 fps | 98.4% |
| Norma 202 | <<locked>> | 86% | 42,018 psi | 85% | 2694 fps | 99.5% |
| Norma 203B | <<locked>> | 90% | 42,960 psi | 87% | 2749 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 90% | 42,859 psi | 87% | 2762 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 44,541 psi | 90% | 2762 fps | 97.2% |
| Ramshot X-Terminator | <<locked>> | 82% | 43,540 psi | 88% | 2687 fps | 96.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,156 psi | 69% | 1791 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 42,772 psi | 87% | 2808 fps | 96.2% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 42,873 psi | 87% | 2841 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 84% | 42,975 psi | 87% | 2680 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 88% | 42,438 psi | 86% | 2680 fps | 98% |
| Rottweil R 903 | <<locked>> | 94% | 42,119 psi | 85% | 2733 fps | 97.4% |
| Shooters World Match Rifle | <<locked>> | 88% | 44,237 psi | 90% | 2762 fps | 99.5% |
| Shooters World Precision | <<locked>> | 90% | 42,786 psi | 87% | 2710 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 44,193 psi | 90% | 2795 fps | 97.1% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 44,541 psi | 90% | 2753 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 44,077 psi | 89% | 2651 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 43,772 psi | 89% | 2654 fps | 100% |
| Somchem S321 | <<locked>> | 82% | 42,786 psi | 87% | 2717 fps | 98.3% |
| Somchem S335 | <<locked>> | 86% | 43,221 psi | 88% | 2651 fps | 99.9% |
| Somchem S341 | <<locked>> | 86% | 42,989 psi | 87% | 2707 fps | 96.7% |
| Somchem S355 | <<locked>> | 94% | 43,540 psi | 88% | 2746 fps | 97.5% |
| Somchem S365ᴾ | <<locked>> | 100% | 37,492 psi | 76% | 2710 fps | 97.2% |
| Vihtavuori N130 | <<locked>> | 82% | 44,324 psi | 90% | 2641 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 44,077 psi | 89% | 2651 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 43,990 psi | 89% | 2723 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 42,641 psi | 86% | 2684 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 94% | 41,568 psi | 84% | 2680 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 84% | 42,699 psi | 87% | 2690 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 90% | 43,888 psi | 89% | 2723 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 43,323 psi | 88% | 2717 fps | 97.4% |
| Winchester 748 | <<locked>> | 86% | 44,570 psi | 90% | 2785 fps | 99.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 43,511 psi | 88% | 2749 fps | 97.6% |
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% | 38,537 psi | 78% | 2575 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 30,545 psi | 62% | 2457 fps | 99.4% |
| Accurate 2520 | <<locked>> | 80% | 36,999 psi | 75% | 2608 fps | 98.3% |
| Accurate 4064 | <<locked>> | 80% | 28,964 psi | 59% | 2431 fps | 96.9% |
| ADI AR 2206H | <<locked>> | 82% | 37,695 psi | 76% | 2612 fps | 95.3% |
| ADI AR 2208 | <<locked>> | 90% | 41,408 psi | 84% | 2671 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 37,434 psi | 76% | 2582 fps | 96.7% |
| Alliant AR-Comp | <<locked>> | 80% | 35,984 psi | 73% | 2598 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 35,157 psi | 71% | 2579 fps | 95.6% |
| Alliant Reloder-15 | <<locked>> | 88% | 40,814 psi | 83% | 2700 fps | 95.7% |
| Alliant Reloder-17 | 44.8 gr | 92% | 37,652 psi | 76% | 2703 fps | 95.5% |
| Bofors RP3 | <<locked>> | 86% | 34,360 psi | 70% | 2572 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 39,813 psi | 81% | 2592 fps | 97.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 35,172 psi | 71% | 2585 fps | 96.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 39,059 psi | 79% | 2717 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 35,592 psi | 72% | 2569 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 36,434 psi | 74% | 2615 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 33,910 psi | 69% | 2579 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,164 psi | 51% | 1565 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 36,796 psi | 75% | 2582 fps | 95.6% |
| IMR 3031 | <<locked>> | 80% | 34,374 psi | 70% | 2589 fps | 99.5% |
| IMR 4064 | <<locked>> | 88% | 40,799 psi | 83% | 2654 fps | 95.7% |
| IMR 4895 | <<locked>> | 84% | 36,767 psi | 75% | 2625 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 37,434 psi | 76% | 2582 fps | 96.7% |
| Lovex D073.5 | <<locked>> | 80% | 41,510 psi | 84% | 2667 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 80% | 33,243 psi | 67% | 2533 fps | 97.2% |
| Lovex S060 | <<locked>> | 82% | 38,841 psi | 79% | 2569 fps | 95.7% |
| Lovex S062 | <<locked>> | 82% | 33,141 psi | 67% | 2497 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 34,534 psi | 70% | 2516 fps | 95.8% |
| Norma 202 | <<locked>> | 80% | 34,606 psi | 70% | 2539 fps | 98.2% |
| Norma 203B | <<locked>> | 86% | 37,594 psi | 76% | 2635 fps | 95.3% |
| Ramshot Big Game | 43.5 gr | 88% | 40,030 psi | 81% | 2703 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 38,769 psi | 79% | 2644 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 40,712 psi | 83% | 2631 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,164 psi | 51% | 1598 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 39,769 psi | 81% | 2746 fps | 95.3% |
| ReloadSwiss RS 60 | 40.9 gr | 84% | 30,806 psi | 62% | 2533 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 38,130 psi | 77% | 2582 fps | 98.8% |
| Rottweil R 902 | <<locked>> | 80% | 32,866 psi | 67% | 2470 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 88% | 34,519 psi | 70% | 2569 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 33,243 psi | 67% | 2533 fps | 97.2% |
| Shooters World Precision | <<locked>> | 82% | 33,141 psi | 67% | 2497 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 38,769 psi | 79% | 2684 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 38,798 psi | 79% | 2635 fps | 95.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 36,506 psi | 74% | 2503 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 29,718 psi | 60% | 2359 fps | 97.8% |
| Somchem S321 | <<locked>> | 80% | 39,900 psi | 81% | 2657 fps | 97.7% |
| Somchem S335 | <<locked>> | 80% | 35,839 psi | 73% | 2503 fps | 99.1% |
| Somchem S341 | <<locked>> | 82% | 37,362 psi | 76% | 2592 fps | 95% |
| Somchem S355 | <<locked>> | 88% | 35,694 psi | 72% | 2579 fps | 95.3% |
| Somchem S365 | <<locked>> | 96% | 33,054 psi | 67% | 2598 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 41,597 psi | 84% | 2592 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,593 psi | 74% | 2510 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 80% | 31,589 psi | 64% | 2474 fps | 99.5% |
| Vihtavuori N140 | <<locked>> | 80% | 32,677 psi | 66% | 2474 fps | 98% |
| Vihtavuori N150 | <<locked>> | 86% | 31,995 psi | 65% | 2470 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 37,217 psi | 75% | 2575 fps | 96.7% |
| Vihtavuori N540 | <<locked>> | 80% | 31,357 psi | 64% | 2454 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 37,869 psi | 77% | 2602 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 36,187 psi | 73% | 2615 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 82% | 35,433 psi | 72% | 2579 fps | 95.3% |
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 61 powders for 7 x 57 R loaded with the .284 | 127gr | Geco ZERO LG. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,841 fps; across all powders the maximum-charge window runs from 1,749 fps to 2,841 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 61 of the 61 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 127.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, Hodgdon TrailBoss, ReloadSwiss RS 14 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, Ramshot Big Game rank at the top here: for 7 x 57 R with the .284 | 127gr | Geco ZERO LG 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.