Load Specifications
Load data in caliber 7 x 57 R with .284 | 170gr | CutEdge MTH bullet and 57 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 Somchem S365.
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>> | 82% | 41,684 psi | 85% | 2303 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 42,148 psi | 85% | 2349 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 44,005 psi | 89% | 2451 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 86% | 44,396 psi | 90% | 2375 fps | 99.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 41,930 psi | 85% | 2451 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 43,932 psi | 89% | 2395 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 84% | 44,237 psi | 90% | 2405 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 94% | 43,555 psi | 88% | 2461 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 90% | 43,729 psi | 89% | 2490 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,101 psi | 75% | 2369 fps | 98.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,118 psi | 83% | 2510 fps | 98% |
| Bofors RP3 | <<locked>> | 86% | 43,497 psi | 88% | 2398 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 84% | 41,698 psi | 85% | 2356 fps | 97.9% |
| Hodgdon H414 | <<locked>> | 92% | 44,208 psi | 90% | 2451 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 42,772 psi | 87% | 2405 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 42,482 psi | 86% | 2405 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,433 psi | 72% | 1516 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 43,743 psi | 89% | 2356 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 82% | 43,845 psi | 89% | 2333 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 43,584 psi | 88% | 2356 fps | 95.9% |
| IMR 4831 | <<locked>> | 94% | 42,105 psi | 85% | 2405 fps | 98.5% |
| IMR 4895 | <<locked>> | 82% | 42,467 psi | 86% | 2385 fps | 99.3% |
| Lovex S062 | <<locked>> | 84% | 43,482 psi | 88% | 2356 fps | 99.9% |
| Lovex S065 | <<locked>> | 90% | 42,757 psi | 87% | 2352 fps | 97.3% |
| Lovex S070 | <<locked>> | 92% | 43,105 psi | 87% | 2379 fps | 96.2% |
| Norma 203B | <<locked>> | 84% | 43,555 psi | 88% | 2395 fps | 99.4% |
| Norma URP | <<locked>> | 94% | 43,859 psi | 89% | 2448 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 84% | 43,511 psi | 88% | 2415 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 94% | 43,120 psi | 87% | 2441 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,563 psi | 72% | 1549 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 42,235 psi | 86% | 2343 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 43,801 psi | 89% | 2454 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 43,424 psi | 88% | 2490 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 43,700 psi | 89% | 2474 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 43,859 psi | 89% | 2487 fps | 98.1% |
| Rottweil R 902 | <<locked>> | 82% | 42,685 psi | 87% | 2323 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 88% | 43,714 psi | 89% | 2395 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,757 psi | 87% | 2352 fps | 97.3% |
| Shooters World Precision | <<locked>> | 84% | 43,482 psi | 88% | 2356 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 92% | 43,105 psi | 87% | 2379 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 42,366 psi | 86% | 2402 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 44,469 psi | 90% | 2388 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 43,772 psi | 89% | 2283 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 42,496 psi | 86% | 2306 fps | 95.8% |
| Somchem S355 | <<locked>> | 88% | 44,599 psi | 90% | 2398 fps | 99.7% |
| Somchem S365 | <<locked>> | 96% | 42,018 psi | 85% | 2454 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 42,163 psi | 86% | 2303 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 42,902 psi | 87% | 2316 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 42,656 psi | 87% | 2339 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 43,250 psi | 88% | 2402 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 84% | 43,990 psi | 89% | 2352 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 42,409 psi | 86% | 2402 fps | 98.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,277 psi | 82% | 2434 fps | 98.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 43,236 psi | 88% | 2382 fps | 99.7% |
| Winchester 760 | <<locked>> | 92% | 44,208 psi | 90% | 2451 fps | 96.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,909 psi | 67% | 2362 fps | 98.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 43,947 psi | 89% | 2392 fps | 99.7% |
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% | 39,175 psi | 79% | 2264 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 37,115 psi | 75% | 2260 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 30,850 psi | 63% | 2195 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 36,796 psi | 75% | 2234 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,262 psi | 80% | 2398 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,289 psi | 74% | 2257 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,812 psi | 79% | 2306 fps | 98.3% |
| Alliant Reloder-16 | 36.5 gr | 84% | 31,778 psi | 64% | 2211 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 31,125 psi | 63% | 2224 fps | 97% |
| Alliant Reloder-23 | <<locked>> | 92% | 28,950 psi | 59% | 2175 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 33,214 psi | 67% | 2333 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 35,476 psi | 72% | 2254 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 80% | 36,521 psi | 74% | 2257 fps | 96.5% |
| Hodgdon H414 | <<locked>> | 90% | 41,394 psi | 84% | 2402 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 27,180 psi | 55% | 2073 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,465 psi | 80% | 2352 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,092 psi | 53% | 1348 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,609 psi | 78% | 2264 fps | 98.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,133 psi | 83% | 2283 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 41,205 psi | 84% | 2313 fps | 95.3% |
| IMR 4831 | <<locked>> | 86% | 32,387 psi | 66% | 2215 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 39,769 psi | 81% | 2336 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 38,450 psi | 78% | 2267 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 35,520 psi | 72% | 2215 fps | 95.2% |
| Lovex S070 | <<locked>> | 90% | 40,727 psi | 83% | 2336 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 38,203 psi | 77% | 2297 fps | 98.6% |
| Norma URP | <<locked>> | 84% | 31,633 psi | 64% | 2205 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 37,884 psi | 77% | 2313 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 37,681 psi | 76% | 2336 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,571 psi | 54% | 1385 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 39,624 psi | 80% | 2293 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,857 psi | 83% | 2402 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,214 psi | 67% | 2287 fps | 99.6% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 33,185 psi | 67% | 2267 fps | 95.6% |
| ReloadSwiss RS 70 | 41.9 gr | 88% | 35,911 psi | 73% | 2326 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 40,248 psi | 82% | 2283 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 33,315 psi | 68% | 2201 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 35,520 psi | 72% | 2215 fps | 95.2% |
| Shooters World Precision | <<locked>> | 80% | 38,450 psi | 78% | 2267 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 90% | 40,727 psi | 83% | 2336 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,563 psi | 70% | 2254 fps | 97.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,713 psi | 85% | 2339 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,332 psi | 74% | 2165 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 39,755 psi | 81% | 2260 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 34,534 psi | 70% | 2215 fps | 98.2% |
| Somchem S365 | 35.5 gr | 80% | 24,656 psi | 50% | 2054 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 39,639 psi | 80% | 2264 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,176 psi | 81% | 2270 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,590 psi | 66% | 2156 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 84% | 33,098 psi | 67% | 2205 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 38,667 psi | 78% | 2264 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 32,387 psi | 66% | 2205 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 90% | 28,906 psi | 59% | 2188 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,095 psi | 59% | 2093 fps | 96.3% |
| Winchester 760 | <<locked>> | 90% | 41,394 psi | 84% | 2402 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 94% | 27,224 psi | 55% | 2192 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,176 psi | 84% | 2346 fps | 99.4% |
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 81 powders for 7 x 57 R loaded with the .284 | 170gr | CutEdge MTH. Alliant Reloder-26 delivers the highest muzzle velocity at 2,510 fps; across all powders the maximum-charge window runs from 1,516 fps to 2,510 fps. Accurate 3100 gives the best case fill at 100 %, and 81 of the 81 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 170.0 gr projectile in 0.284" calls for a 1:9.0 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, Somchem S365 rank at the top here: for 7 x 57 R with the .284 | 170gr | CutEdge MTH they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, ADI AR 2209, Alliant Reloder-19 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.