Load Specifications
Load data in caliber 7 x 57 with .284 | 170gr | Geco PLUS bullet and 79 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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 48,646 psi | 86% | 2428 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 50,299 psi | 89% | 2474 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,818 psi | 81% | 2500 fps | 98.3% |
| Accurate 4064 | <<locked>> | 84% | 49,037 psi | 87% | 2474 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 48,399 psi | 86% | 2552 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 86% | 49,690 psi | 88% | 2497 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 49,922 psi | 88% | 2582 fps | 96.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 48,051 psi | 85% | 2598 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 50,053 psi | 88% | 2520 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 50,343 psi | 89% | 2539 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 49,821 psi | 88% | 2608 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 50,430 psi | 89% | 2635 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 49,095 psi | 87% | 2575 fps | 96.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 45,788 psi | 81% | 2566 fps | 95.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,265 psi | 76% | 2523 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,043 psi | 67% | 2434 fps | 97% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,689 psi | 86% | 2684 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 50,488 psi | 89% | 2536 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 45,788 psi | 81% | 2566 fps | 95.9% |
| Bofors RP7 | <<locked>> | 90% | 50,517 psi | 89% | 2513 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 86% | 50,966 psi | 90% | 2543 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 50,952 psi | 90% | 2602 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 88% | 48,370 psi | 86% | 2513 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 49,443 psi | 87% | 2539 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 48,530 psi | 86% | 2533 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 50,836 psi | 90% | 2631 fps | 98.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,955 psi | 64% | 1565 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 50,328 psi | 89% | 2507 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 49,429 psi | 87% | 2484 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 82% | 48,892 psi | 86% | 2461 fps | 97.9% |
| IMR 4350 | <<locked>> | 94% | 50,705 psi | 90% | 2539 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 49,139 psi | 87% | 2493 fps | 97.9% |
| IMR 4831 | <<locked>> | 94% | 49,153 psi | 87% | 2549 fps | 99.7% |
| IMR 4895 | <<locked>> | 82% | 48,457 psi | 86% | 2516 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 49,472 psi | 87% | 2484 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 48,704 psi | 86% | 2490 fps | 98.9% |
| Lovex S070 | <<locked>> | 92% | 49,574 psi | 88% | 2523 fps | 98.3% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,130 psi | 67% | 2362 fps | 96.5% |
| Norma 201 | <<locked>> | 82% | 50,734 psi | 90% | 2490 fps | 100% |
| Norma 203B | <<locked>> | 84% | 49,647 psi | 88% | 2526 fps | 100% |
| Norma 204 | <<locked>> | 94% | 50,937 psi | 90% | 2582 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 48,240 psi | 85% | 2641 fps | 98% |
| Norma URP | <<locked>> | 94% | 50,995 psi | 90% | 2592 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 49,734 psi | 88% | 2546 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 49,545 psi | 88% | 2589 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,448 psi | 64% | 1601 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 51,126 psi | 90% | 2530 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 50,517 psi | 89% | 2592 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 49,980 psi | 88% | 2628 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 48,080 psi | 85% | 2572 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 50,372 psi | 89% | 2644 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 82% | 48,269 psi | 85% | 2448 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 50,328 psi | 89% | 2530 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,140 psi | 90% | 2608 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 90% | 50,517 psi | 89% | 2513 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 48,704 psi | 86% | 2490 fps | 98.9% |
| Shooters World Precision | <<locked>> | 84% | 49,472 psi | 87% | 2484 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 49,574 psi | 88% | 2523 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 48,573 psi | 86% | 2536 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 50,154 psi | 89% | 2513 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 49,385 psi | 87% | 2395 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 48,414 psi | 86% | 2444 fps | 97.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,662 psi | 90% | 2605 fps | 97.1% |
| Somchem S355 | <<locked>> | 88% | 50,604 psi | 89% | 2526 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 49,110 psi | 87% | 2592 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 48,573 psi | 86% | 2539 fps | 97.4% |
| Vihtavuori N135 | <<locked>> | 82% | 48,312 psi | 85% | 2418 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 48,776 psi | 86% | 2431 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 48,617 psi | 86% | 2461 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 49,879 psi | 88% | 2539 fps | 99.7% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 44,773 psi | 79% | 2464 fps | 96.1% |
| Vihtavuori N540 | <<locked>> | 84% | 49,937 psi | 88% | 2470 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 49,037 psi | 87% | 2546 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,095 psi | 85% | 2592 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 49,501 psi | 88% | 2516 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 50,952 psi | 90% | 2602 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,754 psi | 69% | 2552 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 50,009 psi | 88% | 2520 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 48,544 psi | 86% | 2530 fps | 96.2% |
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% | 45,556 psi | 81% | 2382 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,121 psi | 78% | 2372 fps | 96.1% |
| Accurate 3100 | <<locked>> | 92% | 34,940 psi | 62% | 2300 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 43,076 psi | 76% | 2385 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,097 psi | 57% | 2244 fps | 96.3% |
| ADI AR 2208 | <<locked>> | 80% | 41,365 psi | 73% | 2359 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 96% | 46,789 psi | 83% | 2530 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,715 psi | 79% | 2539 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,292 psi | 73% | 2379 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,367 psi | 78% | 2441 fps | 99.6% |
| Alliant Reloder-16 | 38.9 gr | 80% | 32,271 psi | 57% | 2260 fps | 96.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,781 psi | 63% | 2369 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 43,294 psi | 77% | 2474 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 98% | 42,989 psi | 76% | 2513 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,455 psi | 47% | 2133 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 96% | 33,620 psi | 59% | 2329 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,053 psi | 57% | 2339 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 41,234 psi | 73% | 2388 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 42,989 psi | 76% | 2513 fps | 95.1% |
| Bofors RP7 | <<locked>> | 82% | 39,262 psi | 69% | 2313 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 42,032 psi | 74% | 2395 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 84% | 39,131 psi | 69% | 2392 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 84% | 42,380 psi | 75% | 2408 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,631 psi | 52% | 2165 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,513 psi | 80% | 2484 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 41,176 psi | 73% | 2461 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,731 psi | 47% | 1394 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,224 psi | 83% | 2461 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,482 psi | 77% | 2388 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,934 psi | 81% | 2411 fps | 97.4% |
| IMR 4350 | <<locked>> | 86% | 39,740 psi | 70% | 2349 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,334 psi | 68% | 2297 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 31,067 psi | 55% | 2208 fps | 96% |
| IMR 4895 | <<locked>> | 80% | 45,455 psi | 80% | 2467 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 43,584 psi | 77% | 2388 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,824 psi | 63% | 2254 fps | 96% |
| Lovex S070 | <<locked>> | 82% | 36,434 psi | 64% | 2283 fps | 95% |
| Lovex S071 | <<locked>> | 98% | 35,650 psi | 63% | 2313 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 47,630 psi | 84% | 2444 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,714 psi | 77% | 2431 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 44,469 psi | 79% | 2474 fps | 95.1% |
| Norma MRP | <<locked>> | 94% | 39,494 psi | 70% | 2474 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 32,401 psi | 57% | 2247 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 80% | 43,468 psi | 77% | 2448 fps | 99.6% |
| Ramshot Hunter | 43.3 gr | 84% | 35,926 psi | 64% | 2333 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,267 psi | 48% | 1430 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,163 psi | 75% | 2379 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,253 psi | 84% | 2543 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,058 psi | 67% | 2421 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,720 psi | 56% | 2260 fps | 95.8% |
| ReloadSwiss RS 70 | 43.6 gr | 82% | 33,823 psi | 60% | 2316 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 45,571 psi | 81% | 2405 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,001 psi | 69% | 2343 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 96% | 44,817 psi | 79% | 2507 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 82% | 39,262 psi | 69% | 2313 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,824 psi | 63% | 2254 fps | 96% |
| Shooters World Precision | <<locked>> | 80% | 43,584 psi | 77% | 2388 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 36,434 psi | 64% | 2283 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,842 psi | 70% | 2385 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,181 psi | 83% | 2467 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,857 psi | 72% | 2270 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 37,463 psi | 66% | 2251 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 44,396 psi | 78% | 2500 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 39,465 psi | 70% | 2339 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 29,037 psi | 51% | 2205 fps | 98.4% |
| Somchem S385 | <<locked>> | 92% | 40,059 psi | 71% | 2392 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 45,237 psi | 80% | 2372 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,774 psi | 81% | 2388 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,753 psi | 67% | 2283 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 33,663 psi | 60% | 2247 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 98% | 41,989 psi | 74% | 2415 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 44,092 psi | 78% | 2385 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,257 psi | 59% | 2251 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 84% | 28,543 psi | 50% | 2201 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,112 psi | 59% | 2224 fps | 98.5% |
| Winchester 760 | <<locked>> | 84% | 39,131 psi | 69% | 2392 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,353 psi | 47% | 2201 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,949 psi | 83% | 2474 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 45,426 psi | 80% | 2477 fps | 95.4% |
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 79 powders for 7 x 57 loaded with the .284 | 170gr | Geco PLUS. Alliant Reloder-26 delivers the highest muzzle velocity at 2,684 fps; across all powders the maximum-charge window runs from 1,565 fps to 2,684 fps. Accurate 3100 gives the best case fill at 100 %, and 79 of the 79 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 64–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 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 | 170gr | Geco PLUS 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.