Load Specifications
Load data in caliber 7 x 57 with .284 | 160gr | North Fork FPS bullet and 85 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 70 and Ramshot Hunter.
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% | 48,457 psi | 86% | 2500 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 50,633 psi | 90% | 2539 fps | 96.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,858 psi | 74% | 2497 fps | 96.6% |
| Accurate 4064 | <<locked>> | 86% | 48,457 psi | 86% | 2543 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 47,805 psi | 85% | 2615 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 82% | 48,849 psi | 86% | 2566 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 88% | 49,966 psi | 88% | 2569 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 51,039 psi | 90% | 2566 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 47,993 psi | 85% | 2667 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 49,719 psi | 88% | 2589 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 50,415 psi | 89% | 2608 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 49,269 psi | 87% | 2667 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 92% | 49,995 psi | 88% | 2700 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,885 psi | 71% | 2523 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,715 psi | 79% | 2680 fps | 98.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 48,051 psi | 85% | 2572 fps | 99.3% |
| Bofors RP3 | <<locked>> | 88% | 50,096 psi | 89% | 2602 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 50,502 psi | 89% | 2575 fps | 97% |
| Hodgdon BL-C2 | <<locked>> | 82% | 50,125 psi | 89% | 2592 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 51,039 psi | 90% | 2612 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 94% | 50,560 psi | 89% | 2661 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 82% | 49,342 psi | 87% | 2572 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 48,965 psi | 87% | 2602 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 48,428 psi | 86% | 2602 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 50,691 psi | 90% | 2690 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,607 psi | 63% | 1601 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 50,227 psi | 89% | 2572 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 49,139 psi | 87% | 2559 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 49,327 psi | 87% | 2549 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 84% | 49,269 psi | 87% | 2530 fps | 97.2% |
| IMR 4350 | <<locked>> | 96% | 50,560 psi | 89% | 2598 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 90% | 49,124 psi | 87% | 2556 fps | 97.1% |
| IMR 4831 | <<locked>> | 96% | 48,370 psi | 86% | 2605 fps | 99.3% |
| IMR 4895 | <<locked>> | 84% | 48,472 psi | 86% | 2585 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 82% | 51,039 psi | 90% | 2566 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 48,225 psi | 85% | 2543 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 48,617 psi | 86% | 2500 fps | 99.8% |
| Lovex S062 | <<locked>> | 86% | 49,255 psi | 87% | 2549 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 48,544 psi | 86% | 2549 fps | 98.3% |
| Lovex S070 | <<locked>> | 94% | 49,342 psi | 87% | 2585 fps | 97.5% |
| Norma 201 | <<locked>> | 84% | 50,937 psi | 90% | 2562 fps | 100% |
| Norma 202 | <<locked>> | 82% | 48,109 psi | 85% | 2516 fps | 100% |
| Norma 203B | <<locked>> | 86% | 49,676 psi | 88% | 2598 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 44,541 psi | 79% | 2635 fps | 96.1% |
| Norma URP | <<locked>> | 96% | 50,227 psi | 89% | 2651 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 86% | 49,617 psi | 88% | 2615 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 96% | 49,182 psi | 87% | 2648 fps | 98.2% |
| Ramshot TAC | <<locked>> | 82% | 50,894 psi | 90% | 2579 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 50,517 psi | 89% | 2598 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,071 psi | 64% | 1640 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 47,921 psi | 85% | 2543 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 50,314 psi | 89% | 2664 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 49,864 psi | 88% | 2700 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 50,647 psi | 90% | 2684 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 50,212 psi | 89% | 2703 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 84% | 48,385 psi | 86% | 2516 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 49,922 psi | 88% | 2592 fps | 100% |
| Rottweil R 907 | <<locked>> | 92% | 50,502 psi | 89% | 2575 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 92% | 48,544 psi | 86% | 2549 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 82% | 48,225 psi | 85% | 2543 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 49,255 psi | 87% | 2549 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 49,342 psi | 87% | 2585 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 48,167 psi | 85% | 2598 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 49,385 psi | 87% | 2559 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 50,314 psi | 89% | 2585 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 49,124 psi | 87% | 2464 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 49,385 psi | 87% | 2467 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 48,457 psi | 86% | 2503 fps | 97.1% |
| Somchem S335 | <<locked>> | 82% | 48,646 psi | 86% | 2464 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 48,936 psi | 87% | 2552 fps | 99.8% |
| Somchem S355 | <<locked>> | 90% | 50,676 psi | 90% | 2595 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 48,370 psi | 86% | 2657 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 47,848 psi | 85% | 2592 fps | 96.4% |
| Vihtavuori N133 | <<locked>> | 82% | 49,487 psi | 87% | 2451 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 47,935 psi | 85% | 2487 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 48,573 psi | 86% | 2500 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 48,370 psi | 86% | 2526 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 49,487 psi | 87% | 2602 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 86% | 50,082 psi | 89% | 2543 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 48,602 psi | 86% | 2605 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,092 psi | 78% | 2598 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 49,414 psi | 87% | 2582 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 50,560 psi | 89% | 2661 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,795 psi | 63% | 2533 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 84% | 50,038 psi | 88% | 2592 fps | 100% |
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% | 42,641 psi | 75% | 2411 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 44,324 psi | 78% | 2434 fps | 95.2% |
| Accurate 3100 | <<locked>> | 96% | 36,622 psi | 65% | 2395 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 40,350 psi | 71% | 2411 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 31,633 psi | 56% | 2297 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 45,832 psi | 81% | 2513 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 39,102 psi | 69% | 2375 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,892 psi | 85% | 2520 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,858 psi | 74% | 2552 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,812 psi | 69% | 2398 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,510 psi | 73% | 2457 fps | 98.7% |
| Alliant Reloder-16 | 39.1 gr | 82% | 31,966 psi | 57% | 2306 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,359 psi | 59% | 2372 fps | 97.7% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,559 psi | 52% | 2277 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 92% | 33,910 psi | 60% | 2441 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,078 psi | 80% | 2523 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 38,348 psi | 68% | 2402 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 44,425 psi | 79% | 2470 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,978 psi | 83% | 2543 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,305 psi | 69% | 2408 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 88% | 41,539 psi | 73% | 2503 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 46,238 psi | 82% | 2523 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,543 psi | 49% | 2165 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,467 psi | 75% | 2503 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 90% | 43,932 psi | 78% | 2569 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,542 psi | 47% | 1430 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,440 psi | 79% | 2480 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 46,180 psi | 82% | 2516 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,075 psi | 73% | 2408 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,424 psi | 77% | 2428 fps | 95.9% |
| IMR 4350 | <<locked>> | 92% | 44,527 psi | 79% | 2500 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 40,930 psi | 72% | 2408 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 32,837 psi | 58% | 2310 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 42,511 psi | 75% | 2484 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 80% | 47,892 psi | 85% | 2520 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 45,150 psi | 80% | 2493 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,629 psi | 81% | 2451 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 40,828 psi | 72% | 2408 fps | 99.6% |
| Lovex S065 | <<locked>> | 82% | 35,752 psi | 63% | 2310 fps | 95% |
| Lovex S070 | <<locked>> | 88% | 41,017 psi | 73% | 2438 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 45,034 psi | 80% | 2470 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 45,368 psi | 80% | 2474 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,915 psi | 72% | 2444 fps | 99% |
| Norma MRP | <<locked>> | 98% | 41,727 psi | 74% | 2579 fps | 95.1% |
| Norma URP | <<locked>> | 82% | 32,097 psi | 57% | 2300 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 40,538 psi | 72% | 2461 fps | 98.8% |
| Ramshot Hunter | 44.5 gr | 88% | 37,855 psi | 67% | 2438 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 47,834 psi | 85% | 2530 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,398 psi | 84% | 2549 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,021 psi | 48% | 1467 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,624 psi | 70% | 2388 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,932 psi | 78% | 2556 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,505 psi | 63% | 2434 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 33,475 psi | 59% | 2362 fps | 95.5% |
| ReloadSwiss RS 70 | 44.9 gr | 86% | 35,969 psi | 64% | 2421 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 42,786 psi | 76% | 2425 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 36,230 psi | 64% | 2352 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 88% | 44,425 psi | 79% | 2470 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 82% | 35,752 psi | 63% | 2310 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,150 psi | 80% | 2493 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,828 psi | 72% | 2408 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 41,017 psi | 73% | 2438 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,101 psi | 66% | 2398 fps | 98.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,311 psi | 82% | 2510 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,324 psi | 78% | 2487 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,267 psi | 82% | 2418 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,624 psi | 68% | 2300 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 42,467 psi | 75% | 2405 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 45,963 psi | 81% | 2421 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,905 psi | 81% | 2503 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 37,072 psi | 66% | 2359 fps | 98.6% |
| Somchem S365 | <<locked>> | 80% | 26,905 psi | 48% | 2201 fps | 96.5% |
| Somchem S385 | <<locked>> | 98% | 45,078 psi | 80% | 2546 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 46,644 psi | 82% | 2411 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,467 psi | 75% | 2405 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,917 psi | 76% | 2415 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,201 psi | 62% | 2297 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 33,446 psi | 59% | 2303 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 41,379 psi | 73% | 2408 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 32,938 psi | 58% | 2303 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 88% | 29,762 psi | 53% | 2293 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,111 psi | 55% | 2231 fps | 97% |
| Winchester 760 | <<locked>> | 88% | 41,539 psi | 73% | 2503 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 92% | 27,818 psi | 49% | 2293 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,729 psi | 77% | 2490 fps | 99.6% |
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 85 powders for 7 x 57 loaded with the .284 | 160gr | North Fork FPS. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,703 fps; across all powders the maximum-charge window runs from 1,601 fps to 2,703 fps. Accurate 3100 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 63–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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 70, Ramshot Hunter rank at the top here: for 7 x 57 with the .284 | 160gr | North Fork FPS 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.