Load Specifications
Load data in caliber 7 x 57 R with .284 | 140gr | Swift A-Frame bullet and 46 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 ReloadSwiss RS 62.
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>> | 84% | 44,570 psi | 90% | 2621 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 41,989 psi | 85% | 2615 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 43,497 psi | 88% | 2710 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 86% | 43,903 psi | 89% | 2631 fps | 98% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 44,382 psi | 90% | 2766 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 43,294 psi | 88% | 2651 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 84% | 43,729 psi | 89% | 2664 fps | 98.1% |
| Alliant Reloder-16 | <<locked>> | 94% | 42,902 psi | 87% | 2713 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 90% | 43,149 psi | 88% | 2746 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,825 psi | 75% | 2605 fps | 97.3% |
| Bofors RP3 | <<locked>> | 86% | 43,192 psi | 88% | 2661 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 86% | 44,309 psi | 90% | 2667 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 42,134 psi | 85% | 2657 fps | 98.7% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 41,814 psi | 85% | 2661 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,317 psi | 72% | 1719 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 44,164 psi | 90% | 2644 fps | 98.9% |
| IMR 4064 | <<locked>> | 84% | 43,323 psi | 88% | 2615 fps | 98.1% |
| IMR 4831 | <<locked>> | 96% | 44,585 psi | 90% | 2713 fps | 97.8% |
| IMR 4895 | <<locked>> | 82% | 42,047 psi | 85% | 2644 fps | 98.3% |
| Lovex S062 | <<locked>> | 84% | 43,178 psi | 88% | 2618 fps | 99.3% |
| Norma 201 | <<locked>> | 82% | 44,541 psi | 90% | 2631 fps | 99.5% |
| Norma 203B | <<locked>> | 84% | 43,047 psi | 87% | 2654 fps | 98.4% |
| Norma URP | <<locked>> | 94% | 43,497 psi | 88% | 2703 fps | 97.3% |
| Ramshot Big Game | <<locked>> | 84% | 42,801 psi | 87% | 2671 fps | 98.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,650 psi | 72% | 1759 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 43,207 psi | 88% | 2717 fps | 98% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 42,902 psi | 87% | 2753 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 43,004 psi | 87% | 2723 fps | 97% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 43,598 psi | 88% | 2740 fps | 96.4% |
| Rottweil R 902 | <<locked>> | 82% | 42,351 psi | 86% | 2582 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 88% | 43,323 psi | 88% | 2654 fps | 99% |
| Shooters World Precision | <<locked>> | 84% | 43,178 psi | 88% | 2618 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 44,599 psi | 90% | 2710 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 44,077 psi | 89% | 2648 fps | 98.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 43,395 psi | 88% | 2546 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 44,063 psi | 89% | 2657 fps | 99% |
| Somchem S365 | <<locked>> | 98% | 44,092 psi | 89% | 2762 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 84% | 44,411 psi | 90% | 2615 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 42,554 psi | 86% | 2579 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 42,206 psi | 86% | 2595 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 92% | 42,743 psi | 87% | 2651 fps | 97% |
| Vihtavuori N540 | <<locked>> | 84% | 43,540 psi | 88% | 2612 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 41,974 psi | 85% | 2654 fps | 96.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,740 psi | 81% | 2680 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 42,902 psi | 87% | 2635 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 43,526 psi | 88% | 2654 fps | 98.9% |
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% | 39,015 psi | 79% | 2523 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 36,912 psi | 75% | 2513 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 37,666 psi | 76% | 2592 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 36,318 psi | 74% | 2474 fps | 95.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,595 psi | 78% | 2638 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,955 psi | 73% | 2500 fps | 97.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,493 psi | 78% | 2556 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,810 psi | 73% | 2549 fps | 95% |
| Alliant Reloder-17 | 43.3 gr | 82% | 32,953 psi | 67% | 2507 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,547 psi | 66% | 2497 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 35,201 psi | 71% | 2493 fps | 97.5% |
| Hodgdon H380 | <<locked>> | 82% | 38,725 psi | 79% | 2552 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,705 psi | 62% | 2392 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,957 psi | 79% | 2602 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,266 psi | 53% | 1535 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,466 psi | 84% | 2592 fps | 98.5% |
| IMR 4064 | <<locked>> | 80% | 38,101 psi | 77% | 2510 fps | 96.8% |
| IMR 4831 | <<locked>> | 90% | 36,637 psi | 74% | 2552 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 39,392 psi | 80% | 2585 fps | 97.7% |
| Lovex S062 | <<locked>> | 80% | 37,985 psi | 77% | 2516 fps | 98.4% |
| Norma 201 | <<locked>> | 80% | 41,829 psi | 85% | 2579 fps | 99.1% |
| Norma 203B | <<locked>> | 80% | 37,898 psi | 77% | 2546 fps | 97.3% |
| Norma URP | <<locked>> | 88% | 35,839 psi | 73% | 2543 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 37,260 psi | 76% | 2552 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,411 psi | 54% | 1568 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,089 psi | 81% | 2654 fps | 97.3% |
| ReloadSwiss RS 60 | 42.3 gr | 80% | 32,924 psi | 67% | 2520 fps | 98.3% |
| ReloadSwiss RS 62 | 47.5 gr | 90% | 37,536 psi | 76% | 2608 fps | 95.3% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,683 psi | 83% | 2677 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 39,987 psi | 81% | 2536 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 33,330 psi | 68% | 2444 fps | 96.6% |
| Shooters World Precision | <<locked>> | 80% | 37,985 psi | 77% | 2516 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,185 psi | 69% | 2487 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,176 psi | 84% | 2592 fps | 98% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,882 psi | 73% | 2408 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 34,127 psi | 69% | 2448 fps | 96.6% |
| Somchem S365 | <<locked>> | 84% | 28,094 psi | 57% | 2379 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 39,102 psi | 79% | 2520 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,929 psi | 81% | 2530 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,532 psi | 66% | 2392 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 88% | 37,333 psi | 76% | 2543 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 38,377 psi | 78% | 2516 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 36,753 psi | 75% | 2543 fps | 95% |
| Vihtavuori N555 | <<locked>> | 96% | 34,824 psi | 71% | 2572 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,951 psi | 63% | 2362 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,596 psi | 82% | 2598 fps | 98.4% |
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 46 powders for 7 x 57 R loaded with the .284 | 140gr | Swift A-Frame. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,766 fps; across all powders the maximum-charge window runs from 1,719 fps to 2,766 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 46 of the 46 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, 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, ReloadSwiss RS 62 rank at the top here: for 7 x 57 R with the .284 | 140gr | Swift A-Frame 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.