Load Specifications
Load data in caliber 7 x 57 R with .284 | 130gr | NorthFork Bonded Core bullet and 58 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 Bofors RP3.
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 2495 | <<locked>> | 86% | 44,019 psi | 89% | 2710 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 44,193 psi | 90% | 2749 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 42,496 psi | 86% | 2776 fps | 96.3% |
| ADI AR 2206H | <<locked>> | 82% | 42,598 psi | 86% | 2710 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 88% | 43,584 psi | 88% | 2710 fps | 97.1% |
| Alliant AR-Comp | <<locked>> | 82% | 44,338 psi | 90% | 2726 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 44,164 psi | 90% | 2844 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 42,975 psi | 87% | 2733 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 86% | 43,439 psi | 88% | 2746 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 96% | 42,714 psi | 87% | 2789 fps | 96.4% |
| Alliant Reloder-17 | <<locked>> | 92% | 42,859 psi | 87% | 2825 fps | 98.1% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 44,599 psi | 90% | 2766 fps | 96.9% |
| Bofors RP3 | <<locked>> | 88% | 42,728 psi | 87% | 2740 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 82% | 43,207 psi | 88% | 2743 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 88% | 44,019 psi | 89% | 2746 fps | 96% |
| Hodgdon H4895 | <<locked>> | 82% | 42,902 psi | 87% | 2723 fps | 98.1% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,367 psi | 90% | 2782 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 44,150 psi | 90% | 2795 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,809 psi | 71% | 1772 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 44,135 psi | 90% | 2730 fps | 98.3% |
| IMR 3031 | <<locked>> | 82% | 42,293 psi | 86% | 2730 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 43,207 psi | 88% | 2697 fps | 97.2% |
| IMR 4831 | <<locked>> | 98% | 43,685 psi | 89% | 2782 fps | 96.7% |
| IMR 4895 | <<locked>> | 86% | 44,498 psi | 90% | 2782 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 84% | 44,208 psi | 90% | 2746 fps | 99.8% |
| Lovex S060 | <<locked>> | 82% | 43,076 psi | 87% | 2654 fps | 97.7% |
| Lovex S062 | <<locked>> | 86% | 42,917 psi | 87% | 2703 fps | 98.7% |
| Norma 201 | <<locked>> | 84% | 44,454 psi | 90% | 2720 fps | 99% |
| Norma 202 | <<locked>> | 84% | 44,541 psi | 90% | 2730 fps | 99.9% |
| Norma 203B | <<locked>> | 86% | 42,743 psi | 87% | 2733 fps | 97.6% |
| Norma URP | <<locked>> | 96% | 42,743 psi | 87% | 2776 fps | 96.2% |
| Ramshot Big Game | <<locked>> | 86% | 42,395 psi | 86% | 2749 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 43,947 psi | 89% | 2743 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,099 psi | 71% | 1811 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 42,583 psi | 86% | 2795 fps | 97% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 42,641 psi | 86% | 2835 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 42,235 psi | 86% | 2667 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 90% | 42,569 psi | 86% | 2730 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 44,208 psi | 90% | 2746 fps | 99.8% |
| Shooters World Precision | <<locked>> | 86% | 42,917 psi | 87% | 2703 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 44,193 psi | 90% | 2792 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 43,932 psi | 89% | 2733 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 43,410 psi | 88% | 2631 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 43,091 psi | 87% | 2631 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 42,801 psi | 87% | 2631 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 42,395 psi | 86% | 2690 fps | 97.4% |
| Somchem S355 | <<locked>> | 90% | 43,468 psi | 88% | 2736 fps | 98.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,250 psi | 88% | 2831 fps | 99.3% |
| Vihtavuori N133 | <<locked>> | 82% | 43,584 psi | 88% | 2631 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 44,092 psi | 89% | 2707 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 42,380 psi | 86% | 2664 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 92% | 44,483 psi | 90% | 2723 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 94% | 42,061 psi | 85% | 2723 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 86% | 43,598 psi | 88% | 2707 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 96% | 44,251 psi | 90% | 2782 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 42,815 psi | 87% | 2710 fps | 98.1% |
| Winchester 748 | <<locked>> | 82% | 43,932 psi | 89% | 2762 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 84% | 43,207 psi | 88% | 2736 fps | 98.2% |
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% | 36,187 psi | 73% | 2559 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,229 psi | 69% | 2543 fps | 99% |
| Accurate 4350 | <<locked>> | 94% | 39,653 psi | 80% | 2720 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 39,972 psi | 81% | 2654 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 84% | 38,609 psi | 78% | 2605 fps | 95.6% |
| Alliant AR-Comp | <<locked>> | 80% | 41,307 psi | 84% | 2677 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 38,638 psi | 78% | 2720 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,344 psi | 68% | 2520 fps | 95.7% |
| Alliant Reloder-15 | <<locked>> | 82% | 38,203 psi | 77% | 2635 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 94% | 40,089 psi | 81% | 2730 fps | 95.4% |
| Alliant Reloder-17 | 45 gr | 86% | 34,998 psi | 71% | 2635 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,030 psi | 79% | 2651 fps | 95.3% |
| Bofors RP3 | 40.4 gr | 80% | 32,735 psi | 66% | 2516 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,263 psi | 82% | 2684 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 86% | 41,292 psi | 84% | 2690 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 40,248 psi | 82% | 2667 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 34,418 psi | 70% | 2566 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,201 psi | 73% | 2625 fps | 96.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,005 psi | 53% | 1588 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,769 psi | 79% | 2618 fps | 97% |
| IMR 3031 | <<locked>> | 80% | 39,479 psi | 80% | 2677 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,824 psi | 73% | 2536 fps | 95% |
| IMR 4831 | <<locked>> | 94% | 38,261 psi | 78% | 2671 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 36,637 psi | 74% | 2612 fps | 95.9% |
| Lovex D073.6 | <<locked>> | 80% | 38,493 psi | 78% | 2635 fps | 99.1% |
| Lovex S060 | <<locked>> | 80% | 40,451 psi | 82% | 2598 fps | 97% |
| Lovex S062 | <<locked>> | 80% | 35,404 psi | 72% | 2539 fps | 96.9% |
| Norma 201 | <<locked>> | 80% | 39,363 psi | 80% | 2615 fps | 98% |
| Norma 202 | <<locked>> | 80% | 39,378 psi | 80% | 2631 fps | 99.6% |
| Norma 203B | <<locked>> | 80% | 35,201 psi | 71% | 2569 fps | 95.4% |
| Norma URP | <<locked>> | 94% | 40,045 psi | 81% | 2720 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 82% | 37,130 psi | 75% | 2631 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,234 psi | 84% | 2690 fps | 97.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,107 psi | 53% | 1621 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,014 psi | 75% | 2671 fps | 95.2% |
| ReloadSwiss RS 60 | 41.9 gr | 80% | 30,705 psi | 62% | 2526 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 80% | 37,347 psi | 76% | 2562 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 82% | 32,866 psi | 67% | 2513 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,493 psi | 78% | 2635 fps | 99.1% |
| Shooters World Precision | <<locked>> | 80% | 35,404 psi | 72% | 2539 fps | 96.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 36,303 psi | 74% | 2618 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,479 psi | 78% | 2618 fps | 96.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,915 psi | 83% | 2582 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,736 psi | 68% | 2444 fps | 99.3% |
| Somchem S335 | <<locked>> | 80% | 40,451 psi | 82% | 2585 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 39,798 psi | 81% | 2638 fps | 96.7% |
| Somchem S355 | <<locked>> | 82% | 33,794 psi | 69% | 2523 fps | 95.4% |
| Somchem S365 | <<locked>> | 90% | 31,517 psi | 64% | 2552 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 41,089 psi | 83% | 2585 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,448 psi | 74% | 2562 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,202 psi | 75% | 2562 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 80% | 30,110 psi | 61% | 2408 fps | 95.6% |
| Vihtavuori N160 | <<locked>> | 92% | 39,421 psi | 80% | 2667 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 35,810 psi | 73% | 2546 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 94% | 41,220 psi | 84% | 2723 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 35,215 psi | 71% | 2543 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 41,133 psi | 83% | 2710 fps | 99% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,753 psi | 77% | 2621 fps | 96.9% |
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 58 powders for 7 x 57 R loaded with the .284 | 130gr | NorthFork Bonded Core. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,844 fps; across all powders the maximum-charge window runs from 1,772 fps to 2,844 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 58 of the 58 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 130.0 gr projectile in 0.284" calls for a 1:12.0 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, Bofors RP3 rank at the top here: for 7 x 57 R with the .284 | 130gr | NorthFork Bonded Core 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.