Load Specifications
Load data in caliber 7 x 57 with .284 | 160gr | Barnes MRX BT bullet and 90 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-16 and ReloadSwiss RS 70.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 86% | 50,546 psi | 89% | 2543 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 50,140 psi | 89% | 2546 fps | 96.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 41,205 psi | 73% | 2497 fps | 96.6% |
| Accurate 4064 | <<locked>> | 88% | 50,850 psi | 90% | 2589 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 50,473 psi | 89% | 2667 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 82% | 48,530 psi | 86% | 2572 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 88% | 49,690 psi | 88% | 2575 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 50,807 psi | 90% | 2575 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 47,645 psi | 84% | 2674 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 49,298 psi | 87% | 2595 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 49,995 psi | 88% | 2615 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 49,124 psi | 87% | 2677 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 49,777 psi | 88% | 2707 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,697 psi | 70% | 2530 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,396 psi | 78% | 2687 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 51,097 psi | 90% | 2631 fps | 99.6% |
| Bofors RP3 | <<locked>> | 88% | 49,429 psi | 87% | 2605 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 49,995 psi | 88% | 2582 fps | 97% |
| Hodgdon BL-C2 | <<locked>> | 82% | 49,603 psi | 88% | 2598 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 50,502 psi | 89% | 2618 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 94% | 50,328 psi | 89% | 2671 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 92% | 50,879 psi | 90% | 2631 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 82% | 48,994 psi | 87% | 2582 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 48,428 psi | 86% | 2605 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 48,037 psi | 85% | 2608 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 50,299 psi | 89% | 2697 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,534 psi | 63% | 1611 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 50,009 psi | 88% | 2582 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 48,892 psi | 86% | 2566 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 49,008 psi | 87% | 2559 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 84% | 48,950 psi | 87% | 2536 fps | 97.3% |
| IMR 4350 | <<locked>> | 96% | 50,401 psi | 89% | 2608 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 48,776 psi | 86% | 2562 fps | 97.2% |
| IMR 4831 | <<locked>> | 96% | 48,022 psi | 85% | 2615 fps | 99.4% |
| IMR 4895 | <<locked>> | 84% | 48,066 psi | 85% | 2592 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 82% | 50,807 psi | 90% | 2575 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 50,937 psi | 90% | 2592 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 48,414 psi | 86% | 2510 fps | 99.8% |
| Lovex S062 | <<locked>> | 86% | 48,791 psi | 86% | 2556 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 51,068 psi | 90% | 2605 fps | 98.8% |
| Lovex S070 | <<locked>> | 94% | 48,718 psi | 86% | 2585 fps | 97.5% |
| Norma 201 | <<locked>> | 84% | 50,459 psi | 89% | 2569 fps | 100% |
| Norma 202 | <<locked>> | 84% | 50,995 psi | 90% | 2572 fps | 100% |
| Norma 203B | <<locked>> | 86% | 49,269 psi | 87% | 2602 fps | 99.9% |
| Norma 204 | <<locked>> | 96% | 50,575 psi | 89% | 2651 fps | 95.8% |
| Norma MRPᴾ | <<locked>> | 100% | 44,309 psi | 78% | 2641 fps | 96.2% |
| Norma URP | <<locked>> | 96% | 50,009 psi | 88% | 2661 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 86% | 49,487 psi | 87% | 2625 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 48,892 psi | 86% | 2657 fps | 98.2% |
| Ramshot TAC | <<locked>> | 82% | 50,807 psi | 90% | 2592 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 50,444 psi | 89% | 2608 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,911 psi | 63% | 1647 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 50,850 psi | 90% | 2602 fps | 98.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 49,922 psi | 88% | 2667 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 49,400 psi | 87% | 2703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 50,285 psi | 89% | 2690 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 50,183 psi | 89% | 2717 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 82% | 51,155 psi | 90% | 2546 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 50,763 psi | 90% | 2566 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 49,632 psi | 88% | 2602 fps | 100% |
| Rottweil R 907 | <<locked>> | 92% | 49,995 psi | 88% | 2582 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 94% | 51,068 psi | 90% | 2605 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 84% | 50,937 psi | 90% | 2592 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 48,791 psi | 86% | 2556 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 48,718 psi | 86% | 2585 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 48,022 psi | 85% | 2608 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 48,863 psi | 86% | 2562 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 49,980 psi | 88% | 2592 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 48,602 psi | 86% | 2467 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 49,124 psi | 87% | 2474 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 51,024 psi | 90% | 2559 fps | 97.7% |
| Somchem S335 | <<locked>> | 82% | 48,269 psi | 85% | 2470 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 48,834 psi | 86% | 2562 fps | 99.8% |
| Somchem S355 | <<locked>> | 90% | 50,111 psi | 89% | 2602 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 48,124 psi | 85% | 2664 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 47,688 psi | 84% | 2602 fps | 96.5% |
| Vihtavuori N133 | <<locked>> | 82% | 49,023 psi | 87% | 2457 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 50,618 psi | 89% | 2536 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 48,254 psi | 85% | 2510 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 51,140 psi | 90% | 2579 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 48,979 psi | 87% | 2608 fps | 99.3% |
| Vihtavuori N530 | <<locked>> | 82% | 50,908 psi | 90% | 2572 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 49,617 psi | 88% | 2549 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 48,298 psi | 85% | 2615 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,642 psi | 77% | 2602 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 49,095 psi | 87% | 2589 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 50,981 psi | 90% | 2618 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 50,328 psi | 89% | 2671 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,389 psi | 63% | 2536 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 84% | 49,632 psi | 88% | 2598 fps | 100% |
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% | 41,466 psi | 73% | 2408 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 43,859 psi | 78% | 2441 fps | 95.2% |
| Accurate 3100 | <<locked>> | 98% | 38,392 psi | 68% | 2444 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 39,247 psi | 69% | 2405 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 30,951 psi | 55% | 2293 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 45,498 psi | 80% | 2520 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 38,595 psi | 68% | 2382 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 47,659 psi | 84% | 2526 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,481 psi | 73% | 2556 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,174 psi | 67% | 2398 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,133 psi | 73% | 2461 fps | 98.7% |
| Alliant Reloder-16 | 39.8 gr | 82% | 31,560 psi | 56% | 2310 fps | 95.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 32,880 psi | 58% | 2372 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,935 psi | 51% | 2270 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 92% | 33,315 psi | 59% | 2438 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,715 psi | 79% | 2526 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 37,753 psi | 67% | 2402 fps | 99.2% |
| Bofors RP7 | <<locked>> | 88% | 43,918 psi | 78% | 2477 fps | 95.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 46,528 psi | 82% | 2549 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 38,551 psi | 68% | 2405 fps | 97.1% |
| Hodgdon H414 | <<locked>> | 88% | 41,046 psi | 73% | 2507 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 88% | 44,773 psi | 79% | 2526 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 45,963 psi | 81% | 2533 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,079 psi | 48% | 2165 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,814 psi | 74% | 2503 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 90% | 43,555 psi | 77% | 2579 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,310 psi | 47% | 1434 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,918 psi | 78% | 2484 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 45,643 psi | 81% | 2520 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,538 psi | 72% | 2411 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,134 psi | 76% | 2434 fps | 95.9% |
| IMR 4350 | <<locked>> | 92% | 44,367 psi | 78% | 2510 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 40,625 psi | 72% | 2415 fps | 95.1% |
| IMR 4831 | <<locked>> | 84% | 32,271 psi | 57% | 2310 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 42,177 psi | 75% | 2490 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 80% | 47,659 psi | 84% | 2526 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 44,585 psi | 79% | 2500 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,440 psi | 80% | 2461 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 40,393 psi | 71% | 2415 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 35,244 psi | 62% | 2313 fps | 95% |
| Lovex S070 | <<locked>> | 88% | 40,393 psi | 71% | 2438 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 44,295 psi | 78% | 2470 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 44,730 psi | 79% | 2477 fps | 100% |
| Norma 203B | <<locked>> | 80% | 40,495 psi | 72% | 2451 fps | 99% |
| Norma 204 | <<locked>> | 94% | 47,340 psi | 84% | 2595 fps | 95% |
| Norma MRP | <<locked>> | 98% | 41,510 psi | 73% | 2589 fps | 95.3% |
| Norma URP | <<locked>> | 82% | 31,444 psi | 56% | 2297 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 40,176 psi | 71% | 2464 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 37,565 psi | 66% | 2441 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 47,456 psi | 84% | 2536 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,036 psi | 83% | 2556 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,731 psi | 47% | 1473 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,146 psi | 69% | 2395 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,584 psi | 77% | 2562 fps | 99.1% |
| ReloadSwiss RS 60 | 41.8 gr | 80% | 35,056 psi | 62% | 2434 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 33,083 psi | 58% | 2365 fps | 95.5% |
| ReloadSwiss RS 70 | 45.7 gr | 86% | 35,592 psi | 63% | 2428 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 48,269 psi | 85% | 2507 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 42,047 psi | 74% | 2425 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 35,418 psi | 63% | 2349 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 43,918 psi | 78% | 2477 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 82% | 35,244 psi | 62% | 2313 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 44,585 psi | 79% | 2500 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 40,393 psi | 71% | 2415 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 40,393 psi | 71% | 2438 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 36,695 psi | 65% | 2402 fps | 98.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,745 psi | 81% | 2513 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,005 psi | 78% | 2493 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 45,788 psi | 81% | 2425 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,116 psi | 67% | 2303 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 41,872 psi | 74% | 2408 fps | 95.7% |
| Somchem S335 | <<locked>> | 80% | 45,310 psi | 80% | 2425 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,513 psi | 80% | 2510 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 36,361 psi | 64% | 2356 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 26,353 psi | 47% | 2198 fps | 96.4% |
| Somchem S385 | <<locked>> | 98% | 44,643 psi | 79% | 2549 fps | 95.8% |
| Vihtavuori N133 | <<locked>> | 80% | 46,209 psi | 82% | 2418 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 41,829 psi | 74% | 2408 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,322 psi | 75% | 2418 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,505 psi | 61% | 2297 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 32,982 psi | 58% | 2303 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 47,674 psi | 84% | 2523 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 40,698 psi | 72% | 2408 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 32,416 psi | 57% | 2303 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 90% | 31,140 psi | 55% | 2343 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 30,589 psi | 54% | 2231 fps | 96.9% |
| Winchester 748 | <<locked>> | 80% | 47,398 psi | 84% | 2566 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 41,046 psi | 73% | 2507 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 94% | 28,993 psi | 51% | 2349 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 43,323 psi | 77% | 2493 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 108 powders for 7 x 57 loaded with the .284 | 160gr | Barnes MRX BT. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,717 fps; across all powders the maximum-charge window runs from 1,611 fps to 2,717 fps. Accurate 3100 gives the best case fill at 100 %, and 108 of the 108 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, ADI AR 2213 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-16, ReloadSwiss RS 70 rank at the top here: for 7 x 57 with the .284 | 160gr | Barnes MRX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Alliant Reloder-25 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.