Load Specifications
Load data in caliber 7 x 57 with .284 | 175gr | Barnes X S bullet and 74 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 Alliant Reloder-26.
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% | 50,894 psi | 90% | 2369 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 50,952 psi | 90% | 2395 fps | 97.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,717 psi | 83% | 2431 fps | 98.2% |
| Accurate 4064 | <<locked>> | 84% | 50,923 psi | 90% | 2415 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 49,298 psi | 87% | 2484 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 86% | 50,256 psi | 89% | 2425 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 49,995 psi | 88% | 2500 fps | 96.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 48,341 psi | 85% | 2520 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 50,633 psi | 90% | 2448 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 50,894 psi | 90% | 2461 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 49,850 psi | 88% | 2526 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 50,473 psi | 89% | 2552 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 49,342 psi | 87% | 2497 fps | 96.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,816 psi | 77% | 2451 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 39,059 psi | 69% | 2372 fps | 97% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 49,110 psi | 87% | 2608 fps | 99.7% |
| Bofors RP3 | <<locked>> | 84% | 48,515 psi | 86% | 2421 fps | 100% |
| Bofors RP7 | <<locked>> | 90% | 51,010 psi | 90% | 2434 fps | 97.6% |
| Hodgdon H380 | <<locked>> | 84% | 48,834 psi | 86% | 2428 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 92% | 51,111 psi | 90% | 2520 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 88% | 48,602 psi | 86% | 2434 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 49,690 psi | 88% | 2464 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 49,066 psi | 87% | 2461 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 50,792 psi | 90% | 2546 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,318 psi | 64% | 1509 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 50,662 psi | 90% | 2428 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 49,908 psi | 88% | 2408 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 82% | 49,458 psi | 87% | 2385 fps | 97.8% |
| IMR 4350 | <<locked>> | 94% | 50,952 psi | 90% | 2461 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 49,487 psi | 87% | 2415 fps | 97.7% |
| IMR 4831 | <<locked>> | 94% | 49,835 psi | 88% | 2477 fps | 99.7% |
| IMR 4895 | <<locked>> | 82% | 49,226 psi | 87% | 2444 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 50,401 psi | 89% | 2411 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 49,588 psi | 88% | 2418 fps | 98.9% |
| Lovex S070 | <<locked>> | 92% | 50,502 psi | 89% | 2451 fps | 98.2% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,407 psi | 70% | 2310 fps | 96.6% |
| Norma 203B | <<locked>> | 84% | 50,256 psi | 89% | 2451 fps | 100% |
| Norma MRPᴾ | <<locked>> | 100% | 48,631 psi | 86% | 2562 fps | 97.7% |
| Norma URP | <<locked>> | 92% | 48,399 psi | 86% | 2470 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 84% | 50,285 psi | 89% | 2474 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 49,980 psi | 88% | 2513 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,970 psi | 65% | 1545 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 48,718 psi | 86% | 2408 fps | 98.2% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 50,401 psi | 89% | 2552 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 48,269 psi | 85% | 2497 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 50,749 psi | 90% | 2566 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 82% | 49,690 psi | 88% | 2382 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 48,327 psi | 85% | 2415 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 48,051 psi | 85% | 2477 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 90% | 51,010 psi | 90% | 2434 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 49,588 psi | 88% | 2418 fps | 98.9% |
| Shooters World Precision | <<locked>> | 84% | 50,401 psi | 89% | 2411 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 50,502 psi | 89% | 2451 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 49,110 psi | 87% | 2464 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 51,010 psi | 90% | 2444 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 49,835 psi | 88% | 2323 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 49,284 psi | 87% | 2372 fps | 97.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,981 psi | 90% | 2526 fps | 96.8% |
| Somchem S355 | <<locked>> | 86% | 48,733 psi | 86% | 2411 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 49,400 psi | 87% | 2520 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 49,255 psi | 87% | 2467 fps | 97.3% |
| Vihtavuori N135 | <<locked>> | 82% | 49,356 psi | 87% | 2349 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 49,298 psi | 87% | 2359 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 49,298 psi | 87% | 2388 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 50,125 psi | 89% | 2461 fps | 99.6% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 45,194 psi | 80% | 2388 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 84% | 50,720 psi | 90% | 2402 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 49,371 psi | 87% | 2467 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,675 psi | 86% | 2520 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 49,501 psi | 88% | 2438 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 48,138 psi | 85% | 2474 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,668 psi | 70% | 2487 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 50,691 psi | 90% | 2448 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 49,052 psi | 87% | 2454 fps | 96% |
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% | 47,964 psi | 85% | 2329 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 45,136 psi | 80% | 2306 fps | 96.1% |
| Accurate 3100 | <<locked>> | 92% | 36,376 psi | 64% | 2251 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 45,339 psi | 80% | 2333 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,866 psi | 60% | 2205 fps | 96.8% |
| ADI AR 2208 | <<locked>> | 80% | 42,163 psi | 75% | 2290 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 96% | 47,123 psi | 83% | 2451 fps | 95.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,194 psi | 80% | 2467 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,525 psi | 75% | 2320 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,324 psi | 80% | 2375 fps | 99.6% |
| Alliant Reloder-16 | 35.8 gr | 80% | 33,257 psi | 59% | 2201 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,927 psi | 65% | 2313 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,572 psi | 82% | 2451 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 82% | 26,484 psi | 47% | 2054 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 96% | 34,722 psi | 61% | 2274 fps | 95.2% |
| Alliant Reloder-26 | 43.5 gr | 88% | 33,286 psi | 59% | 2290 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 42,801 psi | 76% | 2333 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 40,495 psi | 72% | 2254 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 43,105 psi | 76% | 2333 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 84% | 40,118 psi | 71% | 2333 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 84% | 43,294 psi | 77% | 2343 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,038 psi | 55% | 2119 fps | 97.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,963 psi | 81% | 2411 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 41,843 psi | 74% | 2392 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 48% | 1348 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,776 psi | 84% | 2385 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,324 psi | 78% | 2320 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,702 psi | 83% | 2343 fps | 97.3% |
| IMR 4350 | <<locked>> | 86% | 40,292 psi | 71% | 2280 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,378 psi | 70% | 2238 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 32,721 psi | 58% | 2165 fps | 96.4% |
| IMR 4895 | <<locked>> | 80% | 46,412 psi | 82% | 2398 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,875 psi | 79% | 2326 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,347 psi | 66% | 2201 fps | 96.3% |
| Lovex S070 | <<locked>> | 82% | 37,695 psi | 67% | 2228 fps | 95.1% |
| Lovex S071 | <<locked>> | 96% | 35,215 psi | 62% | 2224 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 44,730 psi | 79% | 2365 fps | 99.7% |
| Norma MRP | <<locked>> | 94% | 40,335 psi | 71% | 2408 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 33,620 psi | 59% | 2198 fps | 96.5% |
| Ramshot Big Game | <<locked>> | 80% | 44,135 psi | 78% | 2379 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 36,869 psi | 65% | 2274 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,630 psi | 49% | 1378 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,192 psi | 76% | 2316 fps | 97.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,073 psi | 69% | 2362 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 33,199 psi | 59% | 2215 fps | 96.1% |
| ReloadSwiss RS 70 | 40.2 gr | 82% | 34,867 psi | 62% | 2260 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 46,934 psi | 83% | 2339 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 40,451 psi | 72% | 2287 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 96% | 45,266 psi | 80% | 2431 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 82% | 40,495 psi | 72% | 2254 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,347 psi | 66% | 2201 fps | 96.3% |
| Shooters World Precision | <<locked>> | 80% | 44,875 psi | 79% | 2326 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 37,695 psi | 67% | 2228 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,712 psi | 72% | 2323 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,877 psi | 85% | 2395 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,901 psi | 74% | 2208 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,725 psi | 68% | 2195 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 44,860 psi | 79% | 2428 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 40,930 psi | 72% | 2283 fps | 99.6% |
| Somchem S365 | <<locked>> | 80% | 30,516 psi | 54% | 2165 fps | 98.7% |
| Somchem S385 | <<locked>> | 92% | 41,075 psi | 73% | 2329 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 46,412 psi | 82% | 2310 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,514 psi | 82% | 2320 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,899 psi | 69% | 2224 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 34,867 psi | 62% | 2195 fps | 96.8% |
| Vihtavuori N165 | <<locked>> | 98% | 42,641 psi | 75% | 2346 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 44,904 psi | 79% | 2316 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,519 psi | 61% | 2201 fps | 96.5% |
| Vihtavuori N555 | <<locked>> | 82% | 28,514 psi | 50% | 2123 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,258 psi | 61% | 2172 fps | 98.6% |
| Winchester 760 | <<locked>> | 84% | 40,118 psi | 71% | 2333 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 86% | 26,527 psi | 47% | 2123 fps | 95.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,543 psi | 84% | 2402 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 45,803 psi | 81% | 2402 fps | 95.1% |
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 74 powders for 7 x 57 loaded with the .284 | 175gr | Barnes X S. Alliant Reloder-26 delivers the highest muzzle velocity at 2,608 fps; across all powders the maximum-charge window runs from 1,509 fps to 2,608 fps. Accurate 3100 gives the best case fill at 100 %, and 74 of the 74 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 175.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-25 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, Alliant Reloder-26 rank at the top here: for 7 x 57 with the .284 | 175gr | Barnes X S 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.