Load Specifications
Load data in caliber 7 x 57 R with .284 | 150gr | Hornady GMX bullet and 65 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 62.
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>> | 86% | 43,932 psi | 89% | 2507 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 43,859 psi | 89% | 2543 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 42,728 psi | 87% | 2589 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 82% | 42,931 psi | 87% | 2520 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 88% | 43,845 psi | 89% | 2523 fps | 98.1% |
| Alliant AR-Comp | <<locked>> | 82% | 44,599 psi | 90% | 2520 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 44,614 psi | 90% | 2657 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 43,337 psi | 88% | 2546 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 86% | 43,729 psi | 89% | 2556 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 96% | 43,047 psi | 87% | 2605 fps | 97.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 42,902 psi | 87% | 2631 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 33,982 psi | 69% | 2438 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 41,887 psi | 85% | 2520 fps | 97.3% |
| Bofors RP3 | <<locked>> | 88% | 42,946 psi | 87% | 2549 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 43,337 psi | 88% | 2546 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 88% | 44,121 psi | 89% | 2556 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 82% | 43,279 psi | 88% | 2533 fps | 99% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,469 psi | 90% | 2589 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 41,684 psi | 85% | 2552 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,911 psi | 71% | 1621 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 44,512 psi | 90% | 2539 fps | 99.1% |
| IMR 3031 | <<locked>> | 82% | 42,496 psi | 86% | 2530 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 43,250 psi | 88% | 2503 fps | 98.2% |
| IMR 4831 | <<locked>> | 98% | 43,874 psi | 89% | 2592 fps | 97.8% |
| IMR 4895 | <<locked>> | 84% | 42,032 psi | 85% | 2536 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 84% | 44,498 psi | 90% | 2549 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 43,192 psi | 88% | 2461 fps | 98.6% |
| Lovex S062 | <<locked>> | 86% | 42,844 psi | 87% | 2507 fps | 99.4% |
| Lovex S065 | <<locked>> | 92% | 42,134 psi | 85% | 2490 fps | 95.7% |
| Norma 201 | <<locked>> | 82% | 41,959 psi | 85% | 2477 fps | 99.2% |
| Norma 202 | <<locked>> | 82% | 42,279 psi | 86% | 2487 fps | 100% |
| Norma 203B | <<locked>> | 86% | 42,975 psi | 87% | 2543 fps | 98.6% |
| Norma URP | <<locked>> | 96% | 42,931 psi | 87% | 2589 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 86% | 42,815 psi | 87% | 2562 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 44,440 psi | 90% | 2556 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,230 psi | 71% | 1657 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 42,830 psi | 87% | 2602 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 43,047 psi | 87% | 2644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 42,598 psi | 86% | 2608 fps | 97.1% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 43,482 psi | 88% | 2628 fps | 96.5% |
| Rottweil R 902 | <<locked>> | 84% | 42,279 psi | 86% | 2474 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 90% | 42,801 psi | 87% | 2539 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 42,134 psi | 85% | 2490 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 44,498 psi | 90% | 2549 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 42,844 psi | 87% | 2507 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 44,498 psi | 90% | 2598 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 42,931 psi | 87% | 2503 fps | 96.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 44,048 psi | 89% | 2539 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 43,555 psi | 88% | 2434 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 43,395 psi | 88% | 2441 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 43,134 psi | 87% | 2441 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 42,656 psi | 87% | 2503 fps | 98.4% |
| Somchem S355 | <<locked>> | 90% | 43,627 psi | 88% | 2543 fps | 99% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,671 psi | 89% | 2644 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 82% | 43,801 psi | 89% | 2431 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 44,454 psi | 90% | 2507 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 42,627 psi | 86% | 2474 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 41,959 psi | 85% | 2484 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 94% | 42,424 psi | 86% | 2539 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 86% | 43,758 psi | 89% | 2510 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 44,498 psi | 90% | 2595 fps | 97.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,230 psi | 73% | 2507 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 43,062 psi | 87% | 2530 fps | 99% |
| Winchester 748 | <<locked>> | 82% | 44,295 psi | 90% | 2569 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 43,598 psi | 88% | 2546 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% | 35,853 psi | 73% | 2369 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 33,968 psi | 69% | 2356 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 34,418 psi | 70% | 2421 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 40,292 psi | 82% | 2470 fps | 98% |
| ADI AR 2208 | <<locked>> | 80% | 34,258 psi | 69% | 2326 fps | 95.4% |
| Alliant AR-Comp | <<locked>> | 80% | 41,945 psi | 85% | 2477 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,129 psi | 73% | 2477 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,446 psi | 68% | 2343 fps | 97% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,114 psi | 73% | 2405 fps | 96.4% |
| Alliant Reloder-16 | <<locked>> | 90% | 35,679 psi | 72% | 2444 fps | 95.3% |
| Alliant Reloder-17 | 39.5 gr | 82% | 30,676 psi | 62% | 2346 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 98% | 31,937 psi | 65% | 2385 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,059 psi | 79% | 2464 fps | 96.6% |
| Bofors RP3 | <<locked>> | 80% | 32,677 psi | 66% | 2343 fps | 97% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,364 psi | 82% | 2493 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 84% | 38,479 psi | 78% | 2444 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 40,625 psi | 82% | 2480 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 30,371 psi | 62% | 2290 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,390 psi | 74% | 2448 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,889 psi | 53% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,928 psi | 79% | 2434 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 39,682 psi | 80% | 2480 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,911 psi | 73% | 2359 fps | 96.3% |
| IMR 4831 | <<locked>> | 92% | 35,998 psi | 73% | 2438 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 36,941 psi | 75% | 2434 fps | 97.3% |
| Lovex D073.6 | <<locked>> | 80% | 38,725 psi | 79% | 2448 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 40,872 psi | 83% | 2418 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 35,592 psi | 72% | 2362 fps | 98.1% |
| Lovex S065 | <<locked>> | 90% | 39,566 psi | 80% | 2441 fps | 95% |
| Norma 201 | <<locked>> | 80% | 39,334 psi | 80% | 2425 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 39,610 psi | 80% | 2441 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 35,462 psi | 72% | 2392 fps | 96.8% |
| Norma URP | <<locked>> | 90% | 35,346 psi | 72% | 2431 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 34,708 psi | 70% | 2395 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,466 psi | 84% | 2500 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,005 psi | 53% | 1476 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,463 psi | 76% | 2493 fps | 96.8% |
| ReloadSwiss RS 60 | 38.6 gr | 80% | 30,734 psi | 62% | 2362 fps | 97.8% |
| ReloadSwiss RS 62 | 44.3 gr | 92% | 37,130 psi | 75% | 2500 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 40,596 psi | 82% | 2569 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 37,188 psi | 75% | 2375 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 30,690 psi | 62% | 2287 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 39,566 psi | 80% | 2441 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,725 psi | 79% | 2448 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 35,592 psi | 72% | 2362 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,981 psi | 65% | 2336 fps | 95.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 39,972 psi | 81% | 2448 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,870 psi | 79% | 2441 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,075 psi | 83% | 2395 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,823 psi | 69% | 2267 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 40,524 psi | 82% | 2395 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,784 psi | 81% | 2451 fps | 97.8% |
| Somchem S355 | <<locked>> | 80% | 31,807 psi | 65% | 2297 fps | 96% |
| Somchem S365 | <<locked>> | 86% | 27,601 psi | 56% | 2274 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 41,336 psi | 84% | 2392 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,608 psi | 74% | 2372 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,463 psi | 76% | 2379 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 30,197 psi | 61% | 2244 fps | 96.9% |
| Vihtavuori N160 | <<locked>> | 90% | 37,028 psi | 75% | 2434 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 35,984 psi | 73% | 2369 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 90% | 36,245 psi | 74% | 2434 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 98% | 33,953 psi | 69% | 2457 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 30,734 psi | 62% | 2264 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 41,524 psi | 84% | 2516 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,101 psi | 77% | 2441 fps | 98% |
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 65 powders for 7 x 57 R loaded with the .284 | 150gr | Hornady GMX. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,657 fps; across all powders the maximum-charge window runs from 1,621 fps to 2,657 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 65 of the 65 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Hodgdon Hybrid 100V, 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 62 rank at the top here: for 7 x 57 R with the .284 | 150gr | Hornady GMX 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.