Load Specifications
Load data in caliber 7 x 57 with .284 | 160gr | Barnes X S bullet and 80 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, ReloadSwiss RS 60 and Alliant Reloder-17.
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% | 48,849 psi | 86% | 2467 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 49,197 psi | 87% | 2484 fps | 96.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 44,440 psi | 79% | 2510 fps | 97% |
| Accurate 4064 | <<locked>> | 84% | 48,747 psi | 86% | 2510 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 49,995 psi | 88% | 2615 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 82% | 50,589 psi | 89% | 2559 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 86% | 48,399 psi | 86% | 2513 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 49,472 psi | 87% | 2661 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 48,820 psi | 86% | 2543 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 49,168 psi | 87% | 2559 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 96% | 50,879 psi | 90% | 2661 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 90% | 48,341 psi | 85% | 2641 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,800 psi | 74% | 2530 fps | 99.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,499 psi | 82% | 2680 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 49,806 psi | 88% | 2569 fps | 99.4% |
| Bofors RP3 | <<locked>> | 86% | 49,371 psi | 87% | 2559 fps | 100% |
| Bofors RP7 | <<locked>> | 90% | 49,139 psi | 87% | 2520 fps | 96.4% |
| Hodgdon H380 | <<locked>> | 86% | 49,763 psi | 88% | 2559 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 92% | 48,849 psi | 86% | 2605 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 90% | 49,647 psi | 88% | 2569 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 82% | 51,053 psi | 90% | 2569 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 50,531 psi | 89% | 2598 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 50,212 psi | 89% | 2602 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 48,660 psi | 86% | 2625 fps | 96.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,114 psi | 64% | 1591 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 48,820 psi | 86% | 2523 fps | 99.9% |
| IMR 3031 | <<locked>> | 82% | 51,053 psi | 90% | 2556 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 50,923 psi | 90% | 2546 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 84% | 50,807 psi | 90% | 2523 fps | 97.3% |
| IMR 4350 | <<locked>> | 94% | 49,095 psi | 87% | 2546 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 50,459 psi | 89% | 2546 fps | 97.1% |
| IMR 4831 | <<locked>> | 96% | 50,502 psi | 89% | 2608 fps | 99.4% |
| IMR 4895 | <<locked>> | 84% | 50,372 psi | 89% | 2585 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 82% | 50,618 psi | 89% | 2546 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 50,212 psi | 89% | 2493 fps | 99.8% |
| Lovex S062 | <<locked>> | 84% | 48,501 psi | 86% | 2507 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 50,473 psi | 89% | 2549 fps | 98.4% |
| Lovex S070 | <<locked>> | 94% | 51,140 psi | 90% | 2582 fps | 97.6% |
| Norma 201 | <<locked>> | 82% | 50,125 psi | 89% | 2516 fps | 100% |
| Norma 202 | <<locked>> | 82% | 50,169 psi | 89% | 2516 fps | 100% |
| Norma 203B | <<locked>> | 84% | 48,530 psi | 86% | 2549 fps | 99.7% |
| Norma MRPᴾ | <<locked>> | 100% | 46,398 psi | 82% | 2638 fps | 96.2% |
| Norma URP | <<locked>> | 94% | 48,878 psi | 86% | 2602 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 84% | 48,124 psi | 85% | 2562 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 96% | 50,792 psi | 90% | 2644 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,695 psi | 65% | 1627 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 49,951 psi | 88% | 2543 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 48,863 psi | 86% | 2608 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 48,109 psi | 85% | 2644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 49,269 psi | 87% | 2635 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 48,472 psi | 86% | 2648 fps | 98.7% |
| Rottweil R 902 | <<locked>> | 84% | 50,865 psi | 90% | 2520 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 49,211 psi | 87% | 2549 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 90% | 49,139 psi | 87% | 2520 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 50,473 psi | 89% | 2549 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 50,618 psi | 89% | 2546 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 48,501 psi | 86% | 2507 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 51,140 psi | 90% | 2582 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 49,835 psi | 88% | 2598 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 48,950 psi | 87% | 2533 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 50,879 psi | 90% | 2457 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 50,923 psi | 90% | 2461 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 50,459 psi | 89% | 2503 fps | 97.2% |
| Somchem S335 | <<locked>> | 82% | 50,720 psi | 90% | 2461 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 50,749 psi | 90% | 2549 fps | 99.8% |
| Somchem S355 | <<locked>> | 88% | 49,690 psi | 88% | 2549 fps | 99.9% |
| Somchem S365 | <<locked>> | 98% | 50,169 psi | 89% | 2657 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,951 psi | 88% | 2595 fps | 96.6% |
| Vihtavuori N133 | <<locked>> | 82% | 51,068 psi | 90% | 2444 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 50,082 psi | 89% | 2487 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 50,285 psi | 89% | 2497 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 50,502 psi | 89% | 2530 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 51,010 psi | 90% | 2595 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 84% | 48,660 psi | 86% | 2493 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 50,430 psi | 89% | 2605 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,035 psi | 81% | 2602 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 50,734 psi | 90% | 2575 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 49,226 psi | 87% | 2608 fps | 97.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,840 psi | 67% | 2549 fps | 99.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 48,515 psi | 86% | 2539 fps | 99.9% |
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% | 46,151 psi | 82% | 2428 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 46,238 psi | 82% | 2434 fps | 95.4% |
| Accurate 3100 | <<locked>> | 96% | 39,233 psi | 69% | 2415 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 43,555 psi | 77% | 2428 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,242 psi | 57% | 2274 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 47,790 psi | 84% | 2516 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 40,799 psi | 72% | 2379 fps | 98.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,555 psi | 77% | 2556 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,915 psi | 72% | 2408 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 43,598 psi | 77% | 2461 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 33,895 psi | 60% | 2320 fps | 95.8% |
| Alliant Reloder-17 | 39.8 gr | 80% | 35,346 psi | 62% | 2385 fps | 98.1% |
| Alliant Reloder-23 | <<locked>> | 88% | 30,008 psi | 53% | 2251 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 92% | 36,143 psi | 64% | 2464 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,847 psi | 83% | 2523 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 40,988 psi | 72% | 2418 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 43,932 psi | 78% | 2431 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 41,379 psi | 73% | 2415 fps | 97.4% |
| Hodgdon H414 | <<locked>> | 88% | 43,323 psi | 77% | 2507 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 88% | 46,644 psi | 82% | 2516 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 48,283 psi | 85% | 2526 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,675 psi | 52% | 2188 fps | 96% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 44,208 psi | 78% | 2503 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 90% | 45,759 psi | 81% | 2572 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,079 psi | 48% | 1421 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 46,093 psi | 81% | 2477 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 48,066 psi | 85% | 2513 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 42,873 psi | 76% | 2408 fps | 98.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,194 psi | 80% | 2428 fps | 96% |
| IMR 4350 | <<locked>> | 90% | 43,613 psi | 77% | 2451 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,511 psi | 75% | 2405 fps | 95.2% |
| IMR 4831 | <<locked>> | 82% | 33,141 psi | 59% | 2283 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 44,672 psi | 79% | 2490 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 47,485 psi | 84% | 2497 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,485 psi | 84% | 2451 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 43,366 psi | 77% | 2421 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 38,072 psi | 67% | 2323 fps | 95.5% |
| Lovex S070 | <<locked>> | 86% | 40,683 psi | 72% | 2395 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 47,427 psi | 84% | 2474 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,413 psi | 84% | 2477 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,076 psi | 76% | 2454 fps | 99.2% |
| Norma MRP | <<locked>> | 98% | 43,787 psi | 77% | 2589 fps | 95.5% |
| Norma URP | <<locked>> | 82% | 34,113 psi | 60% | 2316 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 42,366 psi | 75% | 2464 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 39,697 psi | 70% | 2444 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,427 psi | 48% | 1453 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 41,481 psi | 73% | 2395 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,701 psi | 81% | 2556 fps | 99.2% |
| ReloadSwiss RS 60 | 39.8 gr | 80% | 37,405 psi | 66% | 2441 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 33,634 psi | 59% | 2333 fps | 95.2% |
| ReloadSwiss RS 70 | 43.5 gr | 86% | 37,840 psi | 67% | 2434 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 45,121 psi | 80% | 2428 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 38,812 psi | 69% | 2369 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 86% | 43,932 psi | 78% | 2431 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 82% | 38,072 psi | 67% | 2323 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 47,485 psi | 84% | 2497 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,366 psi | 77% | 2421 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 40,683 psi | 72% | 2395 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,914 psi | 69% | 2405 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 46,021 psi | 81% | 2484 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,993 psi | 85% | 2415 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,321 psi | 71% | 2297 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,887 psi | 74% | 2362 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 48,022 psi | 85% | 2421 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,703 psi | 84% | 2503 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 39,378 psi | 70% | 2369 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 29,211 psi | 52% | 2231 fps | 97.4% |
| Somchem S385 | <<locked>> | 96% | 44,251 psi | 78% | 2500 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 48,211 psi | 85% | 2405 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 44,541 psi | 79% | 2405 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,875 psi | 79% | 2415 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,391 psi | 66% | 2310 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 33,417 psi | 59% | 2267 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 43,279 psi | 77% | 2408 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 35,085 psi | 62% | 2320 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 86% | 30,342 psi | 54% | 2274 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,069 psi | 58% | 2244 fps | 97.4% |
| Winchester 760 | <<locked>> | 88% | 43,323 psi | 77% | 2507 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,311 psi | 50% | 2270 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,571 psi | 81% | 2490 fps | 99.7% |
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 80 powders for 7 x 57 loaded with the .284 | 160gr | Barnes X S. Alliant Reloder-26 delivers the highest muzzle velocity at 2,680 fps; across all powders the maximum-charge window runs from 1,591 fps to 2,680 fps. Accurate 3100 gives the best case fill at 100 %, and 80 of the 80 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 160.0 gr projectile in 0.284" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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 70, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 7 x 57 with the .284 | 160gr | 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.