Load Specifications
Load data in caliber 7 x 57 R with .283 | 140gr | Frontier PH HPBT bullet and 60 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 60 and Alliant Reloder-17.
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% | 42,148 psi | 85% | 2569 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 42,235 psi | 86% | 2605 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 43,497 psi | 88% | 2694 fps | 97.2% |
| ADI AR 2206H | <<locked>> | 82% | 43,424 psi | 88% | 2621 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 88% | 44,309 psi | 90% | 2621 fps | 97.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,148 psi | 85% | 2700 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 43,830 psi | 89% | 2648 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 86% | 44,280 psi | 90% | 2657 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 96% | 43,337 psi | 88% | 2700 fps | 97.2% |
| Alliant Reloder-17 | <<locked>> | 92% | 43,671 psi | 89% | 2740 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,795 psi | 71% | 2536 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 42,511 psi | 86% | 2621 fps | 97% |
| Bofors RP3 | <<locked>> | 88% | 43,468 psi | 88% | 2651 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 82% | 44,179 psi | 90% | 2654 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 86% | 41,872 psi | 85% | 2602 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 82% | 43,758 psi | 89% | 2635 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 42,264 psi | 86% | 2641 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 42,366 psi | 86% | 2657 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,143 psi | 71% | 1696 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,177 psi | 86% | 2589 fps | 98.4% |
| IMR 3031 | <<locked>> | 82% | 43,149 psi | 88% | 2635 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 43,903 psi | 89% | 2608 fps | 97.9% |
| IMR 4831 | <<locked>> | 96% | 41,713 psi | 85% | 2641 fps | 96.8% |
| IMR 4895 | <<locked>> | 84% | 42,699 psi | 87% | 2641 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 82% | 42,206 psi | 86% | 2602 fps | 99.8% |
| Lovex S060 | <<locked>> | 82% | 43,714 psi | 89% | 2562 fps | 98.3% |
| Lovex S062 | <<locked>> | 86% | 43,642 psi | 89% | 2612 fps | 99.2% |
| Norma 201 | <<locked>> | 82% | 42,424 psi | 86% | 2575 fps | 99% |
| Norma 202 | <<locked>> | 82% | 42,873 psi | 87% | 2592 fps | 100% |
| Norma 203B | <<locked>> | 86% | 43,569 psi | 88% | 2648 fps | 98.3% |
| Norma URP | <<locked>> | 96% | 43,540 psi | 88% | 2690 fps | 97% |
| Ramshot Big Game | <<locked>> | 86% | 43,294 psi | 88% | 2664 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,491 psi | 72% | 1736 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 43,598 psi | 88% | 2710 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 43,352 psi | 88% | 2743 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 43,265 psi | 88% | 2713 fps | 96.7% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 43,961 psi | 89% | 2726 fps | 96% |
| Rottweil R 902 | <<locked>> | 84% | 42,975 psi | 87% | 2579 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 90% | 43,671 psi | 89% | 2648 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 42,206 psi | 86% | 2602 fps | 99.8% |
| Shooters World Precision | <<locked>> | 86% | 43,642 psi | 89% | 2612 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,279 psi | 86% | 2651 fps | 97.9% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 43,758 psi | 89% | 2608 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,959 psi | 85% | 2592 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 44,295 psi | 90% | 2543 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 44,034 psi | 89% | 2543 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 43,497 psi | 88% | 2539 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 43,352 psi | 88% | 2608 fps | 98.1% |
| Somchem S355 | <<locked>> | 90% | 44,425 psi | 90% | 2648 fps | 98.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,338 psi | 90% | 2749 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 82% | 44,425 psi | 90% | 2536 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 42,293 psi | 86% | 2566 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 43,018 psi | 87% | 2572 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 42,641 psi | 86% | 2585 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 94% | 43,091 psi | 87% | 2644 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 86% | 44,237 psi | 90% | 2612 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 42,047 psi | 85% | 2641 fps | 96.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,115 psi | 75% | 2612 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 43,569 psi | 88% | 2625 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 43,947 psi | 89% | 2648 fps | 98.8% |
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% | 36,898 psi | 75% | 2474 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,882 psi | 71% | 2457 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 37,869 psi | 77% | 2582 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 40,654 psi | 82% | 2566 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 82% | 36,825 psi | 75% | 2467 fps | 95.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,666 psi | 74% | 2572 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,953 psi | 69% | 2438 fps | 96.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,521 psi | 74% | 2497 fps | 95.9% |
| Alliant Reloder-16 | 42.9 gr | 92% | 38,319 psi | 78% | 2592 fps | 95.6% |
| Alliant Reloder-17 | 42.2 gr | 84% | 33,373 psi | 68% | 2500 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,634 psi | 66% | 2480 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,813 psi | 81% | 2569 fps | 96.3% |
| Bofors RP3 | <<locked>> | 80% | 33,431 psi | 68% | 2441 fps | 96.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,046 psi | 83% | 2595 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 84% | 39,189 psi | 79% | 2546 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 40,973 psi | 83% | 2579 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,924 psi | 67% | 2434 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,028 psi | 75% | 2546 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,962 psi | 53% | 1509 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,465 psi | 80% | 2533 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 40,437 psi | 82% | 2585 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,347 psi | 74% | 2451 fps | 95.9% |
| IMR 4831 | <<locked>> | 92% | 36,622 psi | 74% | 2536 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 37,347 psi | 76% | 2530 fps | 96.8% |
| Lovex D073.6 | <<locked>> | 80% | 39,392 psi | 80% | 2549 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 41,234 psi | 84% | 2513 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 36,201 psi | 73% | 2461 fps | 97.8% |
| Norma 201 | <<locked>> | 80% | 39,972 psi | 81% | 2526 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 40,030 psi | 81% | 2539 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 35,882 psi | 73% | 2487 fps | 96.3% |
| Norma URP | <<locked>> | 92% | 38,319 psi | 78% | 2582 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 35,288 psi | 72% | 2493 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,353 psi | 53% | 1552 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,913 psi | 77% | 2592 fps | 96.3% |
| ReloadSwiss RS 60 | 40.2 gr | 80% | 31,212 psi | 63% | 2454 fps | 97.3% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,782 psi | 77% | 2598 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,176 psi | 84% | 2667 fps | 95% |
| Rottweil R 902 | <<locked>> | 80% | 38,130 psi | 77% | 2480 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 31,343 psi | 64% | 2382 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,392 psi | 80% | 2549 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 36,201 psi | 73% | 2461 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,679 psi | 70% | 2484 fps | 95.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,669 psi | 82% | 2549 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,262 psi | 80% | 2536 fps | 97.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,640 psi | 84% | 2493 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,374 psi | 70% | 2362 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 41,031 psi | 83% | 2493 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,553 psi | 82% | 2552 fps | 97.5% |
| Somchem S355 | <<locked>> | 80% | 32,416 psi | 66% | 2395 fps | 95.6% |
| Somchem S365 | <<locked>> | 86% | 28,297 psi | 57% | 2369 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 41,843 psi | 85% | 2493 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,260 psi | 76% | 2474 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,869 psi | 77% | 2477 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 30,719 psi | 62% | 2333 fps | 96.5% |
| Vihtavuori N160 | <<locked>> | 90% | 37,637 psi | 76% | 2533 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 36,535 psi | 74% | 2464 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 39,624 psi | 80% | 2592 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 98% | 34,925 psi | 71% | 2562 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,562 psi | 68% | 2411 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,450 psi | 78% | 2539 fps | 97.7% |
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 60 powders for 7 x 57 R loaded with the .283 | 140gr | Frontier PH HPBT. Somchem S365 delivers the highest muzzle velocity at 2,749 fps; across all powders the maximum-charge window runs from 1,696 fps to 2,749 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 60 of the 60 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 140.0 gr projectile in 0.283" calls for a 1:10.0 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. Alliant Reloder-16, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 7 x 57 R with the .283 | 140gr | Frontier PH HPBT 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.