Load Specifications
Load data in caliber 7 x 57 R with .284 | 140gr | Sierra 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% | 42,235 psi | 86% | 2572 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 42,308 psi | 86% | 2608 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 43,555 psi | 88% | 2697 fps | 97.2% |
| ADI AR 2206H | <<locked>> | 82% | 43,497 psi | 88% | 2625 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 86% | 41,858 psi | 85% | 2575 fps | 97.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,192 psi | 86% | 2703 fps | 97.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 43,961 psi | 89% | 2651 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 86% | 44,353 psi | 90% | 2661 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 96% | 43,424 psi | 88% | 2703 fps | 97.3% |
| Alliant Reloder-17 | <<locked>> | 92% | 43,758 psi | 89% | 2743 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,824 psi | 71% | 2539 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 42,598 psi | 86% | 2625 fps | 97% |
| Bofors RP3 | <<locked>> | 88% | 43,888 psi | 89% | 2657 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 82% | 44,237 psi | 90% | 2657 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 86% | 41,989 psi | 85% | 2605 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 82% | 43,903 psi | 89% | 2638 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 42,627 psi | 86% | 2648 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 42,453 psi | 86% | 2661 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,027 psi | 71% | 1696 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,250 psi | 86% | 2589 fps | 98.4% |
| IMR 3031 | <<locked>> | 82% | 43,250 psi | 88% | 2638 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 43,961 psi | 89% | 2608 fps | 97.9% |
| IMR 4831 | <<locked>> | 96% | 41,771 psi | 85% | 2644 fps | 96.8% |
| IMR 4895 | <<locked>> | 84% | 42,830 psi | 87% | 2641 fps | 98.2% |
| Lovex D073.6 | <<locked>> | 82% | 42,264 psi | 86% | 2605 fps | 99.8% |
| Lovex S060 | <<locked>> | 82% | 43,787 psi | 89% | 2566 fps | 98.3% |
| Lovex S062 | <<locked>> | 86% | 43,714 psi | 89% | 2615 fps | 99.2% |
| Norma 201 | <<locked>> | 82% | 42,786 psi | 87% | 2582 fps | 99.1% |
| Norma 202 | <<locked>> | 82% | 42,960 psi | 87% | 2595 fps | 100% |
| Norma 203B | <<locked>> | 86% | 43,656 psi | 89% | 2651 fps | 98.3% |
| Norma URP | <<locked>> | 96% | 43,627 psi | 88% | 2694 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 86% | 43,337 psi | 88% | 2664 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,375 psi | 72% | 1736 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 43,700 psi | 89% | 2713 fps | 97.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 43,671 psi | 89% | 2753 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 43,308 psi | 88% | 2713 fps | 96.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 44,034 psi | 89% | 2726 fps | 96.1% |
| Rottweil R 902 | <<locked>> | 84% | 43,105 psi | 87% | 2582 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 90% | 43,729 psi | 89% | 2651 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 42,264 psi | 86% | 2605 fps | 99.8% |
| Shooters World Precision | <<locked>> | 86% | 43,714 psi | 89% | 2615 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,351 psi | 86% | 2654 fps | 98% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 43,830 psi | 89% | 2612 fps | 96.5% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 42,032 psi | 85% | 2595 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 44,382 psi | 90% | 2543 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 44,092 psi | 89% | 2546 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 43,874 psi | 89% | 2546 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 43,395 psi | 88% | 2612 fps | 98.1% |
| Somchem S355 | <<locked>> | 90% | 44,541 psi | 90% | 2651 fps | 98.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,382 psi | 90% | 2749 fps | 99.7% |
| Vihtavuori N133 | <<locked>> | 82% | 44,527 psi | 90% | 2539 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 42,380 psi | 86% | 2569 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 43,120 psi | 87% | 2575 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 42,757 psi | 87% | 2589 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 94% | 43,149 psi | 88% | 2644 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 86% | 44,280 psi | 90% | 2615 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 42,409 psi | 86% | 2648 fps | 96.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,217 psi | 75% | 2615 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 43,613 psi | 88% | 2628 fps | 98.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 44,309 psi | 90% | 2654 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% | 37,028 psi | 75% | 2477 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,998 psi | 71% | 2461 fps | 99.5% |
| Accurate 4350 | <<locked>> | 92% | 37,971 psi | 77% | 2585 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 40,727 psi | 83% | 2569 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 80% | 34,766 psi | 71% | 2421 fps | 95% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,970 psi | 75% | 2582 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,040 psi | 69% | 2444 fps | 96.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,593 psi | 74% | 2500 fps | 95.9% |
| Alliant Reloder-16 | 43.1 gr | 92% | 38,624 psi | 78% | 2598 fps | 95.7% |
| Alliant Reloder-17 | 42.3 gr | 84% | 33,460 psi | 68% | 2503 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 98% | 32,895 psi | 67% | 2487 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,871 psi | 81% | 2569 fps | 96.3% |
| Bofors RP3 | <<locked>> | 80% | 33,562 psi | 68% | 2444 fps | 96.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,437 psi | 84% | 2605 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 84% | 39,233 psi | 80% | 2549 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 41,060 psi | 83% | 2582 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 33,025 psi | 67% | 2438 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,144 psi | 75% | 2549 fps | 97.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,150 psi | 53% | 1516 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,537 psi | 80% | 2536 fps | 97.8% |
| IMR 3031 | <<locked>> | 80% | 40,553 psi | 82% | 2592 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,434 psi | 74% | 2457 fps | 95.9% |
| IMR 4831 | <<locked>> | 92% | 36,680 psi | 74% | 2539 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 37,434 psi | 76% | 2530 fps | 96.9% |
| Lovex D073.6 | <<locked>> | 80% | 39,465 psi | 80% | 2552 fps | 99.5% |
| Lovex S060 | <<locked>> | 80% | 41,321 psi | 84% | 2516 fps | 97.8% |
| Lovex S062 | <<locked>> | 80% | 36,289 psi | 74% | 2464 fps | 97.8% |
| Norma 201 | <<locked>> | 80% | 40,059 psi | 81% | 2530 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 40,161 psi | 81% | 2543 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 35,955 psi | 73% | 2490 fps | 96.4% |
| Norma URP | <<locked>> | 92% | 38,348 psi | 78% | 2585 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 35,592 psi | 72% | 2500 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,281 psi | 53% | 1549 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,985 psi | 77% | 2595 fps | 96.3% |
| ReloadSwiss RS 60 | 40.3 gr | 80% | 31,270 psi | 63% | 2457 fps | 97.3% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 37,826 psi | 77% | 2602 fps | 95% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,234 psi | 84% | 2667 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 38,218 psi | 78% | 2484 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 31,415 psi | 64% | 2385 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,465 psi | 80% | 2552 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 36,289 psi | 74% | 2464 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 34,780 psi | 71% | 2487 fps | 95.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,756 psi | 83% | 2549 fps | 95.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,392 psi | 80% | 2539 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,742 psi | 85% | 2497 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,461 psi | 70% | 2365 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 41,118 psi | 83% | 2497 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,669 psi | 82% | 2556 fps | 97.5% |
| Somchem S355 | <<locked>> | 80% | 32,518 psi | 66% | 2395 fps | 95.7% |
| Somchem S365 | <<locked>> | 86% | 28,384 psi | 58% | 2372 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 41,945 psi | 85% | 2497 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,362 psi | 76% | 2477 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,942 psi | 77% | 2477 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 30,792 psi | 62% | 2336 fps | 96.6% |
| Vihtavuori N160 | <<locked>> | 90% | 37,956 psi | 77% | 2539 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 36,608 psi | 74% | 2467 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 92% | 39,639 psi | 80% | 2592 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 98% | 34,998 psi | 71% | 2566 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 33,620 psi | 68% | 2415 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,551 psi | 78% | 2539 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 82 powders for 7 x 57 R loaded with the .284 | 140gr | Sierra GameKing. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,753 fps; across all powders the maximum-charge window runs from 1,696 fps to 2,753 fps. Accurate 3100 gives the best case fill at 100 %, and 82 of the 82 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 63–90 %, 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. 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. Alliant Reloder-16, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 7 x 57 R with the .284 | 140gr | Sierra GameKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 3100, Alliant Reloder-26 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.