Load Specifications
Load data in caliber 7 x 57 R with .284 | 145gr | Fox Classic Hunter bullet and 63 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>> | 86% | 43,526 psi | 88% | 2549 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 43,700 psi | 89% | 2589 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 42,264 psi | 86% | 2628 fps | 97.1% |
| ADI AR 2206H | <<locked>> | 82% | 42,627 psi | 86% | 2562 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 88% | 43,758 psi | 89% | 2566 fps | 97.9% |
| Alliant AR-Comp | <<locked>> | 82% | 44,324 psi | 90% | 2566 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 44,324 psi | 90% | 2700 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 42,888 psi | 87% | 2585 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 86% | 43,584 psi | 88% | 2602 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 96% | 42,699 psi | 87% | 2644 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 92% | 42,786 psi | 87% | 2677 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,852 psi | 69% | 2474 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 41,713 psi | 85% | 2562 fps | 97.1% |
| Bofors RP3 | <<locked>> | 88% | 42,380 psi | 86% | 2589 fps | 99% |
| Hodgdon BL-C2 | <<locked>> | 82% | 43,192 psi | 88% | 2592 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 88% | 43,903 psi | 89% | 2598 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 82% | 42,960 psi | 87% | 2575 fps | 98.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,367 psi | 90% | 2635 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 44,498 psi | 90% | 2651 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,751 psi | 70% | 1654 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 44,193 psi | 90% | 2582 fps | 98.9% |
| IMR 3031 | <<locked>> | 82% | 42,235 psi | 86% | 2575 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 43,207 psi | 88% | 2549 fps | 98% |
| IMR 4831 | <<locked>> | 98% | 43,656 psi | 89% | 2635 fps | 97.5% |
| IMR 4895 | <<locked>> | 84% | 41,684 psi | 85% | 2575 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 84% | 44,019 psi | 89% | 2592 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 42,989 psi | 87% | 2503 fps | 98.3% |
| Lovex S062 | <<locked>> | 86% | 42,801 psi | 87% | 2552 fps | 99.2% |
| Norma 201 | <<locked>> | 84% | 44,382 psi | 90% | 2569 fps | 99.4% |
| Norma 202 | <<locked>> | 82% | 41,974 psi | 85% | 2533 fps | 100% |
| Norma 203B | <<locked>> | 86% | 42,844 psi | 87% | 2589 fps | 98.4% |
| Norma URP | <<locked>> | 96% | 42,844 psi | 87% | 2635 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 86% | 42,511 psi | 86% | 2602 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 82% | 43,976 psi | 89% | 2595 fps | 98.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,056 psi | 71% | 1693 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 42,685 psi | 87% | 2648 fps | 97.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 42,641 psi | 86% | 2684 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 42,308 psi | 86% | 2651 fps | 96.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 43,207 psi | 88% | 2667 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 84% | 41,989 psi | 85% | 2516 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 90% | 42,583 psi | 86% | 2582 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 44,019 psi | 89% | 2592 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 42,801 psi | 87% | 2552 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 44,164 psi | 90% | 2641 fps | 98.5% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 42,786 psi | 87% | 2546 fps | 96.5% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 43,903 psi | 89% | 2582 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 43,424 psi | 88% | 2480 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 43,076 psi | 87% | 2484 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 42,627 psi | 86% | 2480 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 42,496 psi | 86% | 2549 fps | 98.2% |
| Somchem S355 | <<locked>> | 90% | 43,410 psi | 88% | 2589 fps | 98.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,424 psi | 88% | 2687 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 82% | 43,642 psi | 89% | 2477 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 44,135 psi | 90% | 2552 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 42,293 psi | 86% | 2513 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 44,483 psi | 90% | 2575 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 94% | 42,076 psi | 85% | 2579 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 86% | 43,294 psi | 88% | 2549 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 44,005 psi | 89% | 2635 fps | 97.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,056 psi | 73% | 2549 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 42,830 psi | 87% | 2569 fps | 98.8% |
| Winchester 748 | <<locked>> | 82% | 44,208 psi | 90% | 2615 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 43,381 psi | 88% | 2589 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% | 35,389 psi | 72% | 2405 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 33,504 psi | 68% | 2392 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 36,854 psi | 75% | 2520 fps | 95.5% |
| ADI AR 2206H | <<locked>> | 80% | 39,813 psi | 81% | 2507 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 80% | 33,881 psi | 69% | 2362 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 41,408 psi | 84% | 2520 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,056 psi | 73% | 2516 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,025 psi | 67% | 2379 fps | 96.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,607 psi | 72% | 2438 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 92% | 37,521 psi | 76% | 2533 fps | 95.7% |
| Alliant Reloder-17 | 41.3 gr | 84% | 32,518 psi | 66% | 2438 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 31,865 psi | 65% | 2425 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 38,928 psi | 79% | 2507 fps | 96.3% |
| Bofors RP3 | <<locked>> | 80% | 32,184 psi | 65% | 2372 fps | 96.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,263 psi | 82% | 2539 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 84% | 38,377 psi | 78% | 2487 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 40,118 psi | 81% | 2520 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 32,256 psi | 65% | 2382 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,071 psi | 73% | 2484 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,657 psi | 52% | 1473 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,725 psi | 79% | 2474 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 39,494 psi | 80% | 2526 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,505 psi | 72% | 2392 fps | 95.9% |
| IMR 4831 | <<locked>> | 92% | 35,737 psi | 72% | 2477 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 36,463 psi | 74% | 2467 fps | 96.8% |
| Lovex D073.6 | <<locked>> | 80% | 38,392 psi | 78% | 2490 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 40,437 psi | 82% | 2454 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 35,186 psi | 71% | 2398 fps | 97.7% |
| Norma 201 | <<locked>> | 80% | 38,899 psi | 79% | 2464 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 39,160 psi | 79% | 2477 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 35,012 psi | 71% | 2428 fps | 96.3% |
| Norma URP | <<locked>> | 92% | 37,463 psi | 76% | 2523 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 34,577 psi | 70% | 2438 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,104 psi | 83% | 2539 fps | 97.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,020 psi | 53% | 1512 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,115 psi | 75% | 2533 fps | 96.3% |
| ReloadSwiss RS 60 | 39.4 gr | 80% | 30,458 psi | 62% | 2395 fps | 97.3% |
| ReloadSwiss RS 62 | 45.2 gr | 92% | 36,753 psi | 75% | 2536 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 40,364 psi | 82% | 2605 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 37,043 psi | 75% | 2418 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 80% | 30,284 psi | 61% | 2320 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,392 psi | 78% | 2490 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 35,186 psi | 71% | 2398 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 33,765 psi | 68% | 2425 fps | 95.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,871 psi | 81% | 2490 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,566 psi | 78% | 2480 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,698 psi | 83% | 2434 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,504 psi | 68% | 2303 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 40,074 psi | 81% | 2434 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,668 psi | 80% | 2493 fps | 97.5% |
| Somchem S355 | <<locked>> | 80% | 31,444 psi | 64% | 2333 fps | 95.5% |
| Somchem S365 | <<locked>> | 88% | 29,283 psi | 59% | 2362 fps | 95.9% |
| Vihtavuori N133 | <<locked>> | 80% | 40,959 psi | 83% | 2434 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,216 psi | 73% | 2411 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 36,985 psi | 75% | 2418 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 29,776 psi | 60% | 2274 fps | 96.5% |
| Vihtavuori N160 | <<locked>> | 90% | 36,811 psi | 75% | 2474 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 35,723 psi | 72% | 2405 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 38,522 psi | 78% | 2526 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 98% | 33,823 psi | 69% | 2497 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 32,634 psi | 66% | 2352 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 41,176 psi | 84% | 2559 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,753 psi | 77% | 2480 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 63 powders for 7 x 57 R loaded with the .284 | 145gr | Fox Classic Hunter. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,700 fps; across all powders the maximum-charge window runs from 1,654 fps to 2,700 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 63 of the 63 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Hodgdon Hybrid 100V, 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, ReloadSwiss RS 62 rank at the top here: for 7 x 57 R with the .284 | 145gr | Fox Classic Hunter 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.