Load Specifications
Load data in caliber 7 x 57 R with .284 | 127gr | Hasler Hunting bullet and 59 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.
A valid access license is required to use the Personalized Load Calculator.
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% | 43,555 psi | 88% | 2687 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 43,163 psi | 88% | 2733 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 42,496 psi | 86% | 2736 fps | 99.5% |
| Accurate 4064 | <<locked>> | 90% | 43,395 psi | 88% | 2769 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 42,728 psi | 87% | 2743 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 90% | 43,758 psi | 89% | 2740 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 42,206 psi | 86% | 2703 fps | 98.2% |
| Alliant AR-Comp | <<locked>> | 84% | 44,063 psi | 89% | 2759 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 44,614 psi | 90% | 2881 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 42,772 psi | 87% | 2759 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 88% | 43,308 psi | 88% | 2772 fps | 96.8% |
| Alliant Reloder-17 | <<locked>> | 94% | 42,656 psi | 87% | 2844 fps | 97.7% |
| Bofors RP3 | <<locked>> | 90% | 42,337 psi | 86% | 2766 fps | 98.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 44,367 psi | 90% | 2703 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 84% | 43,308 psi | 88% | 2776 fps | 98.9% |
| Hodgdon CFE223 | <<locked>> | 82% | 44,440 psi | 90% | 2854 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 84% | 43,062 psi | 87% | 2756 fps | 97.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 41,278 psi | 84% | 2746 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 44,425 psi | 90% | 2831 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,330 psi | 70% | 1781 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 44,280 psi | 90% | 2759 fps | 98% |
| IMR 3031 | <<locked>> | 84% | 42,018 psi | 85% | 2759 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 43,265 psi | 88% | 2726 fps | 96.9% |
| IMR 4831ᴾ | <<locked>> | 100% | 43,236 psi | 88% | 2802 fps | 96.1% |
| IMR 4895 | <<locked>> | 88% | 44,367 psi | 90% | 2808 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 82% | 42,206 psi | 86% | 2703 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 86% | 43,845 psi | 89% | 2772 fps | 99.6% |
| Lovex S060 | <<locked>> | 84% | 43,511 psi | 88% | 2690 fps | 97.4% |
| Lovex S062 | <<locked>> | 88% | 42,714 psi | 87% | 2730 fps | 98.4% |
| Norma 201 | <<locked>> | 86% | 44,251 psi | 90% | 2746 fps | 98.7% |
| Norma 202 | <<locked>> | 84% | 41,872 psi | 85% | 2710 fps | 99.7% |
| Norma 203B | <<locked>> | 88% | 42,583 psi | 86% | 2762 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 88% | 42,656 psi | 87% | 2782 fps | 97% |
| Ramshot Wild Boar | <<locked>> | 84% | 44,222 psi | 90% | 2776 fps | 97.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,519 psi | 70% | 1821 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 42,395 psi | 86% | 2822 fps | 96.6% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 42,699 psi | 87% | 2861 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 82% | 42,728 psi | 87% | 2697 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 86% | 42,192 psi | 86% | 2697 fps | 98.3% |
| Rottweil R 903 | <<locked>> | 92% | 42,235 psi | 86% | 2753 fps | 97.8% |
| Shooters World Match Rifle | <<locked>> | 86% | 43,845 psi | 89% | 2772 fps | 99.6% |
| Shooters World Precision | <<locked>> | 88% | 42,714 psi | 87% | 2730 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 44,237 psi | 90% | 2818 fps | 97.5% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 43,947 psi | 89% | 2762 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 43,497 psi | 88% | 2661 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 43,250 psi | 88% | 2664 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 42,960 psi | 87% | 2664 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 42,670 psi | 87% | 2723 fps | 97.1% |
| Somchem S355 | <<locked>> | 92% | 43,294 psi | 88% | 2762 fps | 97.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 40,379 psi | 82% | 2799 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 84% | 43,642 psi | 89% | 2664 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 43,859 psi | 89% | 2736 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 42,264 psi | 86% | 2694 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 94% | 44,483 psi | 90% | 2753 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 82% | 42,047 psi | 85% | 2697 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 88% | 43,555 psi | 88% | 2736 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 43,134 psi | 87% | 2740 fps | 97.8% |
| Winchester 748 | <<locked>> | 84% | 44,150 psi | 90% | 2799 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 86% | 43,468 psi | 88% | 2769 fps | 98% |
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% | 40,683 psi | 83% | 2635 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 32,880 psi | 67% | 2526 fps | 99.8% |
| Accurate 2520 | <<locked>> | 80% | 39,697 psi | 81% | 2680 fps | 99.1% |
| Accurate 4064 | <<locked>> | 80% | 31,140 psi | 63% | 2503 fps | 98% |
| ADI AR 2206H | <<locked>> | 80% | 37,420 psi | 76% | 2628 fps | 95.7% |
| ADI AR 2208 | <<locked>> | 86% | 38,580 psi | 78% | 2635 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 39,508 psi | 80% | 2648 fps | 97.6% |
| Alliant AR-Comp | <<locked>> | 80% | 38,334 psi | 78% | 2657 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 41,495 psi | 84% | 2812 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 32,822 psi | 67% | 2539 fps | 95.1% |
| Alliant Reloder-15 | <<locked>> | 84% | 38,145 psi | 77% | 2664 fps | 95.3% |
| Alliant Reloder-17 | 46.3 gr | 90% | 37,405 psi | 76% | 2723 fps | 96% |
| Bofors RP3 | <<locked>> | 84% | 34,330 psi | 70% | 2589 fps | 95.9% |
| Hodgdon Benchmark | <<locked>> | 80% | 41,568 psi | 84% | 2651 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 37,623 psi | 76% | 2657 fps | 97.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 41,539 psi | 84% | 2792 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 80% | 37,681 psi | 76% | 2638 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 36,289 psi | 74% | 2638 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,808 psi | 69% | 2595 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,396 psi | 52% | 1591 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 36,448 psi | 74% | 2595 fps | 95.9% |
| IMR 3031 | <<locked>> | 80% | 36,637 psi | 74% | 2651 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 38,087 psi | 77% | 2618 fps | 95.3% |
| IMR 4831 | <<locked>> | 98% | 40,335 psi | 82% | 2743 fps | 95.3% |
| IMR 4895 | <<locked>> | 82% | 36,492 psi | 74% | 2638 fps | 95.5% |
| IMR 8208 XBR | <<locked>> | 80% | 39,508 psi | 80% | 2648 fps | 97.6% |
| Lovex D073.6 | <<locked>> | 80% | 35,621 psi | 72% | 2605 fps | 98.2% |
| Lovex S060 | <<locked>> | 80% | 38,421 psi | 78% | 2582 fps | 96% |
| Lovex S062 | <<locked>> | 80% | 33,040 psi | 67% | 2513 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 36,666 psi | 74% | 2585 fps | 96.9% |
| Norma 202 | <<locked>> | 80% | 36,782 psi | 75% | 2605 fps | 99% |
| Norma 203B | <<locked>> | 84% | 37,478 psi | 76% | 2651 fps | 95.7% |
| Ramshot Big Game | 43.9 gr | 84% | 37,159 psi | 75% | 2661 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 38,537 psi | 78% | 2661 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,672 psi | 52% | 1631 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 39,523 psi | 80% | 2759 fps | 95.7% |
| ReloadSwiss RS 60 | 42.2 gr | 82% | 30,560 psi | 62% | 2549 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 40,263 psi | 82% | 2648 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 80% | 34,722 psi | 70% | 2533 fps | 96.3% |
| Rottweil R 903 | <<locked>> | 86% | 34,490 psi | 70% | 2585 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,621 psi | 72% | 2605 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 33,040 psi | 67% | 2513 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 36,071 psi | 73% | 2641 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 36,085 psi | 73% | 2592 fps | 95.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,435 psi | 78% | 2562 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,459 psi | 64% | 2418 fps | 98.6% |
| Somchem S335 | <<locked>> | 80% | 37,898 psi | 77% | 2566 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 37,086 psi | 75% | 2608 fps | 95.4% |
| Somchem S355 | <<locked>> | 86% | 35,592 psi | 72% | 2598 fps | 95.7% |
| Somchem S365 | <<locked>> | 92% | 31,067 psi | 63% | 2566 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 38,609 psi | 78% | 2569 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,692 psi | 68% | 2536 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 34,737 psi | 70% | 2539 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 82% | 29,834 psi | 61% | 2431 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 39,552 psi | 80% | 2648 fps | 97.7% |
| Vihtavuori N540 | <<locked>> | 80% | 33,402 psi | 68% | 2520 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 35,186 psi | 71% | 2566 fps | 95.2% |
| Winchester 748 | <<locked>> | 80% | 38,508 psi | 78% | 2684 fps | 98.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 35,317 psi | 72% | 2595 fps | 95.7% |
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 59 powders for 7 x 57 R loaded with the .284 | 127gr | Hasler Hunting. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,881 fps; across all powders the maximum-charge window runs from 1,781 fps to 2,881 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 59 of the 59 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 70–90 %, leaving at least 10 % headroom. The 127.0 gr projectile in 0.284" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, Hodgdon TrailBoss, IMR 4831 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 | Hasler Hunting 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.