Load Specifications
Load data in caliber 7 x 57 R with .284 | 140gr | Sierra HPBT GameKing bullet and 60 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 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>> | 84% | 42,032 psi | 85% | 2569 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 42,380 psi | 86% | 2608 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 43,656 psi | 89% | 2697 fps | 97.2% |
| ADI AR 2206H | <<locked>> | 82% | 43,584 psi | 88% | 2625 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 88% | 44,469 psi | 90% | 2625 fps | 97.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,279 psi | 86% | 2703 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 44,019 psi | 89% | 2651 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 86% | 44,469 psi | 90% | 2661 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 96% | 43,526 psi | 88% | 2707 fps | 97.3% |
| Alliant Reloder-17 | <<locked>> | 92% | 43,584 psi | 88% | 2736 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,896 psi | 71% | 2539 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 42,656 psi | 87% | 2625 fps | 97% |
| Bofors RP3 | <<locked>> | 88% | 43,671 psi | 89% | 2654 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 82% | 44,034 psi | 89% | 2654 fps | 99.5% |
| Hodgdon H380 | <<locked>> | 86% | 42,061 psi | 85% | 2605 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 82% | 43,961 psi | 89% | 2638 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 42,453 psi | 86% | 2644 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 42,235 psi | 86% | 2654 fps | 98.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,070 psi | 71% | 1696 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,061 psi | 85% | 2585 fps | 98.4% |
| IMR 3031 | <<locked>> | 82% | 43,018 psi | 87% | 2635 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 44,034 psi | 89% | 2612 fps | 97.9% |
| IMR 4831 | <<locked>> | 98% | 44,527 psi | 90% | 2694 fps | 97.5% |
| IMR 4895 | <<locked>> | 84% | 42,598 psi | 86% | 2638 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 82% | 42,337 psi | 86% | 2608 fps | 99.8% |
| Lovex S060 | <<locked>> | 82% | 43,903 psi | 89% | 2566 fps | 98.3% |
| Lovex S062 | <<locked>> | 86% | 43,816 psi | 89% | 2615 fps | 99.2% |
| Norma 201 | <<locked>> | 82% | 42,598 psi | 86% | 2579 fps | 99% |
| Norma 202 | <<locked>> | 82% | 42,743 psi | 87% | 2589 fps | 100% |
| Norma 203B | <<locked>> | 86% | 43,714 psi | 89% | 2651 fps | 98.3% |
| Norma URP | <<locked>> | 96% | 43,700 psi | 89% | 2694 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 86% | 43,468 psi | 88% | 2667 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,404 psi | 72% | 1736 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 43,497 psi | 88% | 2707 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 43,511 psi | 88% | 2749 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 43,395 psi | 88% | 2713 fps | 96.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 44,121 psi | 89% | 2730 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 84% | 43,178 psi | 88% | 2582 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 90% | 43,511 psi | 88% | 2644 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 42,337 psi | 86% | 2608 fps | 99.8% |
| Shooters World Precision | <<locked>> | 86% | 43,816 psi | 89% | 2615 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,177 psi | 86% | 2648 fps | 97.9% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 43,613 psi | 88% | 2605 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 42,105 psi | 85% | 2595 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 44,164 psi | 90% | 2539 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 44,222 psi | 90% | 2546 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 43,671 psi | 89% | 2543 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 43,526 psi | 88% | 2612 fps | 98.1% |
| Somchem S355 | <<locked>> | 90% | 44,614 psi | 90% | 2651 fps | 98.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,208 psi | 90% | 2746 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 82% | 44,309 psi | 90% | 2536 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 42,163 psi | 86% | 2566 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 43,178 psi | 88% | 2575 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 42,496 psi | 86% | 2585 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 94% | 42,931 psi | 87% | 2641 fps | 96.7% |
| Vihtavuori N540 | <<locked>> | 86% | 44,382 psi | 90% | 2615 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 42,235 psi | 86% | 2644 fps | 96.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,289 psi | 76% | 2615 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 43,700 psi | 89% | 2628 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 44,121 psi | 89% | 2648 fps | 98.8% |
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% | 37,043 psi | 75% | 2477 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,041 psi | 71% | 2461 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 38,043 psi | 77% | 2585 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 40,814 psi | 83% | 2572 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 34,809 psi | 71% | 2421 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,796 psi | 75% | 2579 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,084 psi | 69% | 2444 fps | 96.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,651 psi | 74% | 2500 fps | 95.9% |
| Alliant Reloder-16 | 43 gr | 92% | 38,464 psi | 78% | 2595 fps | 95.7% |
| Alliant Reloder-17 | 42.3 gr | 84% | 33,518 psi | 68% | 2503 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,764 psi | 66% | 2484 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,697 psi | 81% | 2566 fps | 96.2% |
| Bofors RP3 | <<locked>> | 80% | 33,373 psi | 68% | 2438 fps | 96.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,234 psi | 84% | 2598 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 84% | 39,305 psi | 80% | 2549 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 41,118 psi | 83% | 2582 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 33,083 psi | 67% | 2438 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,970 psi | 75% | 2546 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,918 psi | 53% | 1509 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,624 psi | 80% | 2536 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 40,321 psi | 82% | 2585 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,506 psi | 74% | 2457 fps | 95.9% |
| IMR 4831 | <<locked>> | 92% | 36,753 psi | 75% | 2539 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 37,492 psi | 76% | 2533 fps | 96.9% |
| Lovex D073.6 | <<locked>> | 80% | 39,566 psi | 80% | 2552 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 41,379 psi | 84% | 2516 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 36,347 psi | 74% | 2464 fps | 97.8% |
| Norma 201 | <<locked>> | 80% | 40,118 psi | 81% | 2530 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 40,205 psi | 82% | 2543 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 36,013 psi | 73% | 2490 fps | 96.4% |
| Norma URP | <<locked>> | 92% | 38,479 psi | 78% | 2585 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 35,418 psi | 72% | 2497 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,310 psi | 53% | 1549 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,072 psi | 77% | 2595 fps | 96.3% |
| ReloadSwiss RS 60 | 40.3 gr | 80% | 31,314 psi | 64% | 2457 fps | 97.4% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,927 psi | 77% | 2602 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,307 psi | 84% | 2667 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 38,058 psi | 77% | 2480 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 31,473 psi | 64% | 2385 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,566 psi | 80% | 2552 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 36,347 psi | 74% | 2464 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,838 psi | 71% | 2487 fps | 95.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,814 psi | 83% | 2552 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,436 psi | 80% | 2539 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,524 psi | 84% | 2493 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,287 psi | 70% | 2359 fps | 99.6% |
| Somchem S335 | <<locked>> | 80% | 41,191 psi | 84% | 2497 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,422 psi | 82% | 2552 fps | 97.5% |
| Somchem S355 | <<locked>> | 80% | 32,576 psi | 66% | 2395 fps | 95.7% |
| Somchem S365 | <<locked>> | 86% | 28,442 psi | 58% | 2372 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 41,727 psi | 85% | 2493 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,144 psi | 75% | 2470 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,029 psi | 77% | 2480 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 30,835 psi | 63% | 2336 fps | 96.6% |
| Vihtavuori N160 | <<locked>> | 90% | 37,782 psi | 77% | 2536 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 36,419 psi | 74% | 2464 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 39,479 psi | 80% | 2589 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 98% | 34,838 psi | 71% | 2559 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,489 psi | 68% | 2411 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,609 psi | 78% | 2543 fps | 97.7% |
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 60 powders for 7 x 57 R loaded with the .284 | 140gr | Sierra HPBT GameKing. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,749 fps; across all powders the maximum-charge window runs from 1,696 fps to 2,749 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 60 of the 60 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 1:10.0 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. Alliant Reloder-16, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 7 x 57 R with the .284 | 140gr | Sierra HPBT GameKing 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.