Load Specifications
Load data in caliber 7 x 57 R with .284 | 140gr | Nosler CT FailSafe bullet and 49 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>> | 84% | 44,280 psi | 90% | 2615 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 44,541 psi | 90% | 2657 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 43,279 psi | 88% | 2703 fps | 97.4% |
| ADI AR 2208 | <<locked>> | 86% | 43,656 psi | 89% | 2625 fps | 97.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 44,164 psi | 90% | 2759 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 43,033 psi | 87% | 2648 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 84% | 43,497 psi | 88% | 2657 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 94% | 42,714 psi | 87% | 2710 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 90% | 42,975 psi | 87% | 2743 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,695 psi | 74% | 2602 fps | 97.2% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 44,614 psi | 90% | 2677 fps | 97.8% |
| Bofors RP3 | <<locked>> | 86% | 42,931 psi | 87% | 2654 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 86% | 44,077 psi | 89% | 2661 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 41,945 psi | 85% | 2651 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 44,382 psi | 90% | 2710 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,215 psi | 71% | 1716 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 43,961 psi | 89% | 2638 fps | 98.9% |
| IMR 4064 | <<locked>> | 84% | 43,062 psi | 87% | 2608 fps | 98% |
| IMR 4831 | <<locked>> | 96% | 44,106 psi | 89% | 2700 fps | 97.6% |
| IMR 4895 | <<locked>> | 84% | 44,556 psi | 90% | 2690 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 82% | 44,367 psi | 90% | 2654 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 42,931 psi | 87% | 2612 fps | 99.3% |
| Norma 201 | <<locked>> | 82% | 44,324 psi | 90% | 2625 fps | 99.4% |
| Norma 203B | <<locked>> | 84% | 42,815 psi | 87% | 2648 fps | 98.4% |
| Norma URP | <<locked>> | 94% | 42,989 psi | 87% | 2694 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 84% | 42,583 psi | 86% | 2664 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,549 psi | 72% | 1755 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 42,917 psi | 87% | 2710 fps | 97.9% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 42,714 psi | 87% | 2749 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 42,815 psi | 87% | 2717 fps | 97% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 43,163 psi | 88% | 2730 fps | 96.2% |
| Rottweil R 902 | <<locked>> | 82% | 42,351 psi | 86% | 2582 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 88% | 43,134 psi | 87% | 2651 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 44,367 psi | 90% | 2654 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 42,931 psi | 87% | 2612 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 44,382 psi | 90% | 2703 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 43,903 psi | 89% | 2644 fps | 98.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 43,134 psi | 87% | 2543 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 43,845 psi | 89% | 2654 fps | 98.9% |
| Somchem S365 | <<locked>> | 98% | 43,888 psi | 89% | 2756 fps | 99.8% |
| Vihtavuori N135 | <<locked>> | 84% | 44,440 psi | 90% | 2615 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 42,337 psi | 86% | 2572 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 42,003 psi | 85% | 2589 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 92% | 42,540 psi | 86% | 2648 fps | 97% |
| Vihtavuori N540 | <<locked>> | 84% | 43,569 psi | 88% | 2615 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 44,541 psi | 90% | 2700 fps | 97.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,537 psi | 80% | 2677 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 42,786 psi | 87% | 2628 fps | 98.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 43,323 psi | 88% | 2648 fps | 98.9% |
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% | 39,015 psi | 79% | 2523 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 36,883 psi | 75% | 2513 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 37,710 psi | 76% | 2592 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 36,332 psi | 74% | 2474 fps | 95.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,624 psi | 78% | 2638 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,723 psi | 72% | 2493 fps | 97.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,247 psi | 78% | 2549 fps | 96.7% |
| Alliant Reloder-16 | <<locked>> | 90% | 37,898 psi | 77% | 2602 fps | 95.9% |
| Alliant Reloder-17 | 43.1 gr | 82% | 32,764 psi | 66% | 2500 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,401 psi | 66% | 2490 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,669 psi | 85% | 2621 fps | 97.1% |
| Bofors RP3 | <<locked>> | 80% | 35,244 psi | 71% | 2493 fps | 97.5% |
| Hodgdon H380 | <<locked>> | 82% | 38,508 psi | 78% | 2546 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 32,576 psi | 66% | 2441 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,754 psi | 79% | 2598 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,136 psi | 53% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,205 psi | 84% | 2585 fps | 98.4% |
| IMR 4064 | <<locked>> | 80% | 38,116 psi | 77% | 2507 fps | 96.8% |
| IMR 4831 | <<locked>> | 90% | 36,434 psi | 74% | 2546 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 39,175 psi | 79% | 2582 fps | 97.6% |
| Lovex D073.6 | <<locked>> | 80% | 41,597 psi | 84% | 2605 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 37,739 psi | 77% | 2507 fps | 98.4% |
| Norma 201 | <<locked>> | 80% | 41,858 psi | 85% | 2579 fps | 99.1% |
| Norma 203B | <<locked>> | 80% | 37,637 psi | 76% | 2539 fps | 97.1% |
| Norma URP | <<locked>> | 90% | 37,985 psi | 77% | 2589 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 37,275 psi | 76% | 2552 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,542 psi | 54% | 1572 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,856 psi | 81% | 2648 fps | 97.2% |
| ReloadSwiss RS 60 | 42.1 gr | 80% | 32,750 psi | 66% | 2513 fps | 98.2% |
| ReloadSwiss RS 62 | 47.3 gr | 90% | 37,362 psi | 76% | 2605 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 40,524 psi | 82% | 2674 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 39,740 psi | 81% | 2530 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 80% | 33,098 psi | 67% | 2438 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,597 psi | 84% | 2605 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 37,739 psi | 77% | 2507 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,968 psi | 69% | 2480 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,959 psi | 83% | 2585 fps | 97.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,911 psi | 73% | 2408 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 34,098 psi | 69% | 2448 fps | 96.5% |
| Somchem S365 | <<locked>> | 84% | 27,949 psi | 57% | 2372 fps | 95.2% |
| Vihtavuori N135 | <<locked>> | 80% | 39,131 psi | 79% | 2520 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,682 psi | 80% | 2523 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,300 psi | 66% | 2385 fps | 97.4% |
| Vihtavuori N160 | <<locked>> | 88% | 37,130 psi | 75% | 2536 fps | 95.3% |
| Vihtavuori N540 | <<locked>> | 80% | 38,189 psi | 77% | 2510 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 90% | 38,986 psi | 79% | 2592 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 96% | 34,650 psi | 70% | 2566 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,806 psi | 62% | 2356 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,408 psi | 82% | 2592 fps | 98.3% |
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 49 powders for 7 x 57 R loaded with the .284 | 140gr | Nosler CT FailSafe. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,759 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,759 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 49 of the 49 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 71–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Hodgdon TrailBoss, ReloadSwiss RS 14 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 | 140gr | Nosler CT FailSafe 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.