Load Specifications
Load data in caliber 7 x 57 R with .284 | 120gr | Barnes X BT bullet and 48 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 Alliant Reloder- TS 15.5.
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 2495 | <<locked>> | 84% | 43,555 psi | 88% | 2782 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 43,482 psi | 88% | 2815 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 82% | 43,598 psi | 88% | 2808 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 88% | 44,222 psi | 90% | 2805 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 43,888 psi | 89% | 2835 fps | 97.9% |
| Alliant Reloder-15 | <<locked>> | 86% | 44,411 psi | 90% | 2844 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 92% | 43,497 psi | 88% | 2913 fps | 97.3% |
| Bofors RP3 | <<locked>> | 88% | 44,019 psi | 89% | 2844 fps | 98% |
| Hodgdon BL-C2 | <<locked>> | 82% | 44,179 psi | 90% | 2844 fps | 98.7% |
| Hodgdon H4895 | <<locked>> | 82% | 43,976 psi | 89% | 2825 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 42,264 psi | 86% | 2818 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 42,163 psi | 86% | 2838 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,157 psi | 71% | 1844 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,134 psi | 85% | 2772 fps | 97.1% |
| IMR 3031 | <<locked>> | 82% | 42,946 psi | 87% | 2831 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 43,801 psi | 89% | 2789 fps | 96.5% |
| IMR 4831 | <<locked>> | 98% | 44,324 psi | 90% | 2874 fps | 95.8% |
| IMR 4895 | <<locked>> | 84% | 42,743 psi | 87% | 2825 fps | 96.8% |
| Lovex D073.6 | <<locked>> | 82% | 42,743 psi | 87% | 2802 fps | 99.2% |
| Lovex S060 | <<locked>> | 82% | 43,932 psi | 89% | 2749 fps | 97% |
| Lovex S062 | <<locked>> | 86% | 43,874 psi | 89% | 2802 fps | 98.3% |
| Norma 201 | <<locked>> | 82% | 43,236 psi | 88% | 2772 fps | 98.1% |
| Norma 202 | <<locked>> | 82% | 42,917 psi | 87% | 2782 fps | 99.6% |
| Norma 203B | <<locked>> | 86% | 43,700 psi | 89% | 2835 fps | 97% |
| Ramshot Big Game | <<locked>> | 86% | 43,076 psi | 87% | 2841 fps | 96.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,795 psi | 73% | 1893 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 43,323 psi | 88% | 2894 fps | 96.2% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 43,265 psi | 88% | 2927 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 84% | 43,700 psi | 89% | 2772 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 90% | 43,845 psi | 89% | 2835 fps | 97.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 42,743 psi | 87% | 2802 fps | 99.2% |
| Shooters World Precision | <<locked>> | 86% | 43,874 psi | 89% | 2802 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,221 psi | 86% | 2831 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,887 psi | 85% | 2772 fps | 96.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 44,498 psi | 90% | 2733 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 43,918 psi | 89% | 2730 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 44,092 psi | 89% | 2736 fps | 99.9% |
| Somchem S341 | <<locked>> | 82% | 43,192 psi | 88% | 2785 fps | 96.7% |
| Somchem S355 | <<locked>> | 90% | 44,599 psi | 90% | 2838 fps | 97.7% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,150 psi | 90% | 2930 fps | 98.8% |
| Vihtavuori N133 | <<locked>> | 82% | 44,454 psi | 90% | 2733 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 42,395 psi | 86% | 2762 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 43,018 psi | 87% | 2762 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 90% | 42,612 psi | 86% | 2769 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 86% | 44,280 psi | 90% | 2802 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 43,424 psi | 88% | 2795 fps | 97.4% |
| Winchester 748 | <<locked>> | 82% | 44,599 psi | 90% | 2861 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 84% | 44,005 psi | 89% | 2831 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 2495 | <<locked>> | 80% | 38,580 psi | 78% | 2684 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 36,390 psi | 74% | 2661 fps | 98.8% |
| ADI AR 2206H | <<locked>> | 80% | 41,133 psi | 83% | 2756 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 86% | 41,727 psi | 85% | 2753 fps | 95.6% |
| Alliant Reloder- TS 15.5 | 39.5 gr | 80% | 34,447 psi | 70% | 2618 fps | 95.1% |
| Alliant Reloder-15 | <<locked>> | 82% | 39,407 psi | 80% | 2736 fps | 95.1% |
| Alliant Reloder-17 | 46.4 gr | 88% | 38,464 psi | 78% | 2792 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 34,243 psi | 69% | 2625 fps | 95.2% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,365 psi | 84% | 2785 fps | 98.2% |
| Hodgdon H4895 | <<locked>> | 80% | 41,394 psi | 84% | 2769 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 37,695 psi | 76% | 2713 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,202 psi | 75% | 2723 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,252 psi | 53% | 1647 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,668 psi | 80% | 2717 fps | 96.4% |
| IMR 3031 | <<locked>> | 80% | 40,263 psi | 82% | 2779 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 39,044 psi | 79% | 2684 fps | 95% |
| IMR 4831 | <<locked>> | 96% | 41,727 psi | 85% | 2818 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 37,898 psi | 77% | 2717 fps | 95.3% |
| Lovex D073.6 | <<locked>> | 80% | 39,943 psi | 81% | 2743 fps | 98.7% |
| Lovex S060 | <<locked>> | 80% | 41,423 psi | 84% | 2697 fps | 96.4% |
| Lovex S062 | <<locked>> | 80% | 36,941 psi | 75% | 2648 fps | 96.5% |
| Norma 201 | <<locked>> | 80% | 40,727 psi | 83% | 2720 fps | 97.5% |
| Norma 202 | <<locked>> | 80% | 40,379 psi | 82% | 2730 fps | 99.3% |
| Norma 203B | <<locked>> | 82% | 38,769 psi | 79% | 2726 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 82% | 38,116 psi | 77% | 2730 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,658 psi | 54% | 1690 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 40,408 psi | 82% | 2828 fps | 95.3% |
| ReloadSwiss RS 60 | 42.2 gr | 80% | 31,966 psi | 65% | 2628 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 38,856 psi | 79% | 2667 fps | 97% |
| Rottweil R 903 | <<locked>> | 84% | 36,477 psi | 74% | 2674 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,943 psi | 81% | 2743 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 36,941 psi | 75% | 2648 fps | 96.5% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 39,523 psi | 80% | 2769 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,479 psi | 80% | 2717 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,872 psi | 85% | 2680 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,722 psi | 70% | 2539 fps | 99% |
| Somchem S335 | <<locked>> | 80% | 41,568 psi | 84% | 2687 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 40,451 psi | 82% | 2726 fps | 95.9% |
| Somchem S355 | <<locked>> | 84% | 37,492 psi | 76% | 2684 fps | 95.7% |
| Somchem S365 | <<locked>> | 90% | 32,822 psi | 67% | 2651 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 41,785 psi | 85% | 2684 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,652 psi | 76% | 2664 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,348 psi | 78% | 2664 fps | 99.2% |
| Vihtavuori N150 | <<locked>> | 80% | 31,633 psi | 64% | 2513 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 37,072 psi | 75% | 2651 fps | 98.6% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 36,201 psi | 73% | 2631 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 41,945 psi | 85% | 2808 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,769 psi | 79% | 2720 fps | 96.2% |
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 74 powders for 7 x 57 R loaded with the .284 | 120gr | Barnes X BT. Somchem S365 delivers the highest muzzle velocity at 2,930 fps; across all powders the maximum-charge window runs from 1,844 fps to 2,930 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 74 of the 74 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, Hodgdon TrailBoss 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, Alliant Reloder- TS 15.5 rank at the top here: for 7 x 57 R with the .284 | 120gr | Barnes X BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-23, Alliant Reloder-26, Hodgdon H380 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.