Load Specifications
Load data in caliber 7 x 57 R with .284 | 157gr | CutEdge MTAC bullet and 61 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 70.
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% | 42,598 psi | 86% | 2425 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 42,931 psi | 87% | 2467 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 41,655 psi | 84% | 2513 fps | 97.7% |
| ADI AR 2206H | <<locked>> | 82% | 44,251 psi | 90% | 2490 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 86% | 42,714 psi | 87% | 2448 fps | 98.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,975 psi | 87% | 2572 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 42,032 psi | 85% | 2464 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 84% | 42,395 psi | 86% | 2474 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 96% | 44,512 psi | 90% | 2579 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 92% | 44,498 psi | 90% | 2605 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,288 psi | 72% | 2421 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,233 psi | 80% | 2559 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 43,584 psi | 88% | 2497 fps | 98.2% |
| Bofors RP3 | <<locked>> | 88% | 44,541 psi | 90% | 2520 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 86% | 42,801 psi | 87% | 2477 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 43,555 psi | 88% | 2520 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 43,192 psi | 88% | 2523 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,998 psi | 71% | 1581 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 43,033 psi | 87% | 2457 fps | 99.2% |
| IMR 3031 | <<locked>> | 82% | 43,976 psi | 89% | 2490 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 42,105 psi | 85% | 2428 fps | 98.4% |
| IMR 4831 | <<locked>> | 96% | 42,757 psi | 87% | 2516 fps | 98% |
| IMR 4895 | <<locked>> | 84% | 43,453 psi | 88% | 2503 fps | 99% |
| Lovex D073.6 | <<locked>> | 82% | 42,830 psi | 87% | 2464 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 44,527 psi | 90% | 2477 fps | 99.8% |
| Lovex S065 | <<locked>> | 92% | 43,845 psi | 89% | 2470 fps | 96.8% |
| Norma 201 | <<locked>> | 82% | 43,207 psi | 88% | 2441 fps | 99.6% |
| Norma 202 | <<locked>> | 82% | 43,584 psi | 88% | 2451 fps | 100% |
| Norma 203B | <<locked>> | 86% | 44,454 psi | 90% | 2513 fps | 99.1% |
| Norma URP | <<locked>> | 96% | 44,614 psi | 90% | 2562 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 86% | 44,411 psi | 90% | 2533 fps | 99% |
| Ramshot Hunter | <<locked>> | 96% | 43,758 psi | 89% | 2549 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,375 psi | 72% | 1621 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 43,308 psi | 88% | 2461 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 41,611 psi | 84% | 2520 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 44,599 psi | 90% | 2615 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 44,425 psi | 90% | 2589 fps | 98% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 42,018 psi | 85% | 2549 fps | 96.8% |
| Rottweil R 902 | <<locked>> | 84% | 43,555 psi | 88% | 2441 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 90% | 44,440 psi | 90% | 2513 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 43,845 psi | 89% | 2470 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 42,830 psi | 87% | 2464 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 44,527 psi | 90% | 2477 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 43,279 psi | 88% | 2520 fps | 98.9% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 44,338 psi | 90% | 2477 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 42,670 psi | 87% | 2457 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 42,177 psi | 86% | 2362 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 44,367 psi | 90% | 2402 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 44,396 psi | 90% | 2480 fps | 99% |
| Somchem S355 | <<locked>> | 88% | 42,598 psi | 86% | 2467 fps | 99.2% |
| Somchem S365 | <<locked>> | 98% | 42,598 psi | 86% | 2569 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 84% | 43,004 psi | 87% | 2421 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 43,976 psi | 89% | 2438 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 43,410 psi | 88% | 2454 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 94% | 44,019 psi | 89% | 2513 fps | 98% |
| Vihtavuori N540 | <<locked>> | 84% | 42,134 psi | 85% | 2425 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 43,062 psi | 87% | 2513 fps | 97.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,884 psi | 77% | 2490 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 44,556 psi | 90% | 2503 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,372 psi | 64% | 2395 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 41,974 psi | 85% | 2461 fps | 99.1% |
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% | 37,188 psi | 75% | 2336 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,215 psi | 71% | 2326 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 33,504 psi | 68% | 2349 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 41,539 psi | 84% | 2438 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 35,288 psi | 72% | 2300 fps | 96.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,565 psi | 76% | 2457 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,592 psi | 70% | 2316 fps | 97.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,275 psi | 76% | 2375 fps | 97.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,606 psi | 70% | 2372 fps | 95.5% |
| Alliant Reloder-17 | 38.4 gr | 80% | 29,776 psi | 60% | 2277 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,169 psi | 63% | 2316 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,492 psi | 74% | 2500 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,654 psi | 82% | 2441 fps | 97.5% |
| Bofors RP3 | <<locked>> | 80% | 33,881 psi | 69% | 2316 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 80% | 34,969 psi | 71% | 2320 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,472 psi | 60% | 2221 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,652 psi | 76% | 2418 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,918 psi | 53% | 1411 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,379 psi | 82% | 2408 fps | 98.8% |
| IMR 3031 | <<locked>> | 80% | 41,394 psi | 84% | 2448 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,970 psi | 75% | 2329 fps | 97.2% |
| IMR 4831 | <<locked>> | 88% | 32,837 psi | 67% | 2316 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 38,174 psi | 77% | 2405 fps | 98% |
| Lovex D073.6 | <<locked>> | 80% | 40,132 psi | 81% | 2418 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 36,724 psi | 74% | 2333 fps | 98.7% |
| Lovex S065 | <<locked>> | 88% | 38,682 psi | 78% | 2372 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 40,524 psi | 82% | 2395 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 40,843 psi | 83% | 2405 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,666 psi | 74% | 2365 fps | 97.6% |
| Norma URP | <<locked>> | 88% | 34,389 psi | 70% | 2359 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 36,143 psi | 73% | 2375 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 94% | 41,118 psi | 83% | 2500 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,339 psi | 53% | 1447 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 40,727 psi | 83% | 2411 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,870 psi | 79% | 2467 fps | 97.6% |
| ReloadSwiss RS 60 | 38.4 gr | 80% | 31,749 psi | 64% | 2343 fps | 98.7% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 36,013 psi | 73% | 2425 fps | 95.7% |
| ReloadSwiss RS 70 | 44.8 gr | 92% | 39,189 psi | 79% | 2490 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 38,580 psi | 78% | 2349 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 31,850 psi | 65% | 2264 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,682 psi | 78% | 2372 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,132 psi | 81% | 2418 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 36,724 psi | 74% | 2333 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,054 psi | 67% | 2313 fps | 96.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,321 psi | 84% | 2421 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,074 psi | 81% | 2411 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,838 psi | 71% | 2234 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 41,684 psi | 85% | 2359 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,379 psi | 84% | 2425 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 32,895 psi | 67% | 2274 fps | 96.9% |
| Somchem S365 | <<locked>> | 84% | 26,847 psi | 54% | 2205 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 37,855 psi | 77% | 2336 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,667 psi | 78% | 2346 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,227 psi | 63% | 2218 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 88% | 35,955 psi | 73% | 2359 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 37,130 psi | 75% | 2336 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 35,273 psi | 72% | 2362 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 94% | 31,096 psi | 63% | 2336 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,849 psi | 61% | 2195 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,486 psi | 60% | 2336 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,378 psi | 80% | 2415 fps | 98.7% |
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 61 powders for 7 x 57 R loaded with the .284 | 157gr | CutEdge MTAC. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,615 fps; across all powders the maximum-charge window runs from 1,581 fps to 2,615 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 61 of the 61 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 64–90 %, leaving at least 10 % headroom. The 157.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, 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 70 rank at the top here: for 7 x 57 R with the .284 | 157gr | CutEdge MTAC 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.