Load Specifications
Load data in caliber 7 x 57 with .284 | 151gr | Warner Tool Co. Flat Line bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, 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.
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 2015 | <<locked>> | 84% | 50,662 psi | 90% | 2543 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 48,689 psi | 86% | 2562 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 50,459 psi | 89% | 2621 fps | 100% |
| Accurate 4064 | <<locked>> | 90% | 48,704 psi | 86% | 2602 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 50,546 psi | 89% | 2707 fps | 98.9% |
| ADI AR 2206H | <<locked>> | 86% | 49,676 psi | 88% | 2625 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 92% | 50,604 psi | 89% | 2621 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 84% | 49,008 psi | 87% | 2585 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 84% | 48,849 psi | 86% | 2566 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 48,820 psi | 86% | 2723 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 50,270 psi | 89% | 2648 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 90% | 51,010 psi | 90% | 2667 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 49,400 psi | 87% | 2710 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 96% | 50,459 psi | 89% | 2753 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,041 psi | 62% | 2451 fps | 96.8% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 49,066 psi | 87% | 2635 fps | 98.7% |
| Bofors RP3 | <<locked>> | 92% | 50,285 psi | 89% | 2657 fps | 99.9% |
| Bofors RP7 | <<locked>> | 96% | 51,155 psi | 90% | 2621 fps | 95.8% |
| Hodgdon Benchmark | <<locked>> | 84% | 50,908 psi | 90% | 2572 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 51,039 psi | 90% | 2661 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 49,153 psi | 87% | 2690 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 90% | 48,515 psi | 86% | 2618 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 98% | 50,575 psi | 89% | 2703 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 86% | 50,125 psi | 89% | 2635 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 45,542 psi | 81% | 2595 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 48,733 psi | 86% | 2661 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,940 psi | 62% | 1611 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 48,312 psi | 85% | 2592 fps | 99.5% |
| IMR 3031 | <<locked>> | 86% | 49,719 psi | 88% | 2628 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 50,082 psi | 89% | 2605 fps | 99.2% |
| IMR 4166 Enduron | <<locked>> | 88% | 50,430 psi | 89% | 2582 fps | 96.2% |
| IMR 4350ᴾ | <<locked>> | 100% | 50,952 psi | 90% | 2641 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 94% | 50,038 psi | 88% | 2608 fps | 96.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 48,037 psi | 85% | 2651 fps | 98.6% |
| IMR 4895 | <<locked>> | 88% | 48,834 psi | 86% | 2641 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 84% | 49,008 psi | 87% | 2585 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 86% | 48,747 psi | 86% | 2605 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 50,082 psi | 89% | 2566 fps | 99.5% |
| Lovex S062 | <<locked>> | 90% | 49,777 psi | 88% | 2608 fps | 99.9% |
| Lovex S065 | <<locked>> | 96% | 48,820 psi | 86% | 2598 fps | 97.3% |
| Lovex S070 | <<locked>> | 98% | 49,371 psi | 87% | 2625 fps | 96.3% |
| Norma 201 | <<locked>> | 86% | 48,805 psi | 86% | 2579 fps | 99.9% |
| Norma 202 | <<locked>> | 86% | 49,052 psi | 87% | 2585 fps | 100% |
| Norma 203B | <<locked>> | 90% | 50,256 psi | 89% | 2654 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 50,053 psi | 88% | 2697 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 90% | 49,966 psi | 88% | 2671 fps | 99.4% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 49,168 psi | 87% | 2690 fps | 97.1% |
| Ramshot TAC | <<locked>> | 84% | 49,095 psi | 87% | 2592 fps | 97.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 48,298 psi | 85% | 2608 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 82% | 49,777 psi | 88% | 2582 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,346 psi | 62% | 1650 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 48,863 psi | 86% | 2598 fps | 96.6% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 50,836 psi | 90% | 2723 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 50,241 psi | 89% | 2756 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 50,096 psi | 89% | 2726 fps | 98.6% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 50,792 psi | 90% | 2749 fps | 98.3% |
| Rottweil R 901 | <<locked>> | 84% | 49,966 psi | 88% | 2569 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 49,211 psi | 87% | 2579 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 94% | 50,169 psi | 89% | 2648 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 96% | 51,155 psi | 90% | 2621 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 96% | 48,820 psi | 86% | 2598 fps | 97.3% |
| Shooters World Match Rifle | <<locked>> | 86% | 48,747 psi | 86% | 2605 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 49,777 psi | 88% | 2608 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 98% | 49,371 psi | 87% | 2625 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 48,428 psi | 86% | 2654 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 50,575 psi | 89% | 2621 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 48,138 psi | 85% | 2598 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 50,560 psi | 89% | 2530 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 50,328 psi | 89% | 2530 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 49,095 psi | 87% | 2552 fps | 95.9% |
| Somchem S321 | <<locked>> | 82% | 49,588 psi | 88% | 2612 fps | 99.9% |
| Somchem S335 | <<locked>> | 86% | 49,908 psi | 88% | 2533 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 50,067 psi | 89% | 2615 fps | 99.4% |
| Somchem S355 | <<locked>> | 94% | 51,024 psi | 90% | 2651 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 44,802 psi | 79% | 2651 fps | 99.9% |
| Vihtavuori N130 | <<locked>> | 82% | 50,256 psi | 89% | 2497 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 50,691 psi | 90% | 2520 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 48,327 psi | 85% | 2549 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 49,429 psi | 87% | 2566 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 48,892 psi | 86% | 2585 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 49,400 psi | 87% | 2648 fps | 98.5% |
| Vihtavuori N530 | <<locked>> | 84% | 49,182 psi | 87% | 2582 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 90% | 50,981 psi | 90% | 2608 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 48,515 psi | 86% | 2651 fps | 98.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,478 psi | 66% | 2523 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 50,009 psi | 88% | 2631 fps | 99.8% |
| Winchester 748 | <<locked>> | 84% | 48,631 psi | 86% | 2625 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 50,575 psi | 89% | 2703 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 88% | 50,821 psi | 90% | 2651 fps | 99.8% |
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 2015 | <<locked>> | 80% | 44,962 psi | 79% | 2457 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,492 psi | 66% | 2382 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,092 psi | 78% | 2520 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,462 psi | 63% | 2372 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 35,984 psi | 64% | 2444 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 41,292 psi | 73% | 2477 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 80% | 35,143 psi | 62% | 2333 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,352 psi | 77% | 2487 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 42,975 psi | 76% | 2484 fps | 100% |
| Alliant Power Pro 2000-MR | 39.1 gr | 80% | 37,304 psi | 66% | 2490 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,490 psi | 61% | 2356 fps | 97.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,130 psi | 66% | 2415 fps | 96.7% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,593 psi | 65% | 2454 fps | 95.6% |
| Alliant Reloder-17 | 39.4 gr | 82% | 31,618 psi | 56% | 2362 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,067 psi | 55% | 2349 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,292 psi | 71% | 2477 fps | 97% |
| Bofors RP3 | <<locked>> | 80% | 33,910 psi | 60% | 2356 fps | 97.4% |
| Bofors RP7 | <<locked>> | 94% | 48,109 psi | 85% | 2572 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,136 psi | 80% | 2480 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,785 psi | 74% | 2507 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,832 psi | 81% | 2635 fps | 98.7% |
| Hodgdon H380 | <<locked>> | 82% | 37,217 psi | 66% | 2408 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 96% | 47,514 psi | 84% | 2654 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 41,655 psi | 74% | 2490 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 31,357 psi | 55% | 2303 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,362 psi | 66% | 2454 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,223 psi | 46% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,103 psi | 71% | 2444 fps | 98.4% |
| IMR 3031 | <<locked>> | 80% | 40,756 psi | 72% | 2487 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,811 psi | 65% | 2365 fps | 96.6% |
| IMR 4166 Enduron | <<locked>> | 86% | 47,500 psi | 84% | 2533 fps | 95.5% |
| IMR 4350 | <<locked>> | 98% | 47,935 psi | 85% | 2595 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 92% | 47,108 psi | 83% | 2559 fps | 95.4% |
| IMR 4831 | <<locked>> | 90% | 34,838 psi | 62% | 2402 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 38,014 psi | 67% | 2444 fps | 97.6% |
| IMR 8208 XBR | <<locked>> | 80% | 43,352 psi | 77% | 2487 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 39,943 psi | 71% | 2457 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 41,756 psi | 74% | 2421 fps | 98.3% |
| Lovex S062 | <<locked>> | 80% | 36,709 psi | 65% | 2375 fps | 98.3% |
| Lovex S065 | <<locked>> | 90% | 40,959 psi | 72% | 2457 fps | 95.4% |
| Lovex S070 | <<locked>> | 96% | 46,456 psi | 82% | 2575 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 40,509 psi | 72% | 2434 fps | 99% |
| Norma 202 | <<locked>> | 80% | 40,654 psi | 72% | 2448 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,521 psi | 65% | 2402 fps | 97.1% |
| Norma URP | <<locked>> | 90% | 36,405 psi | 64% | 2444 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 35,897 psi | 63% | 2411 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 96% | 43,236 psi | 76% | 2582 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 42,989 psi | 76% | 2484 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,453 psi | 75% | 2507 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,586 psi | 82% | 2530 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,397 psi | 47% | 1476 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 42,989 psi | 76% | 2493 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,493 psi | 68% | 2503 fps | 97.1% |
| ReloadSwiss RS 60 | 38.5 gr | 80% | 31,705 psi | 56% | 2375 fps | 98.1% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 38,290 psi | 68% | 2513 fps | 95.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 41,568 psi | 73% | 2579 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 44,222 psi | 78% | 2477 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,609 psi | 68% | 2392 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 80% | 31,879 psi | 56% | 2303 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 94% | 48,109 psi | 85% | 2572 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 40,959 psi | 72% | 2457 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,943 psi | 71% | 2457 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 36,709 psi | 65% | 2375 fps | 98.3% |
| Shooters World SW4350 | <<locked>> | 96% | 46,456 psi | 82% | 2575 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,967 psi | 58% | 2349 fps | 95.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,104 psi | 73% | 2457 fps | 96.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,798 psi | 70% | 2448 fps | 97.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,018 psi | 74% | 2398 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,722 psi | 61% | 2270 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 46,035 psi | 81% | 2503 fps | 95.2% |
| Somchem S321 | <<locked>> | 80% | 46,673 psi | 83% | 2566 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 41,568 psi | 73% | 2402 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,031 psi | 73% | 2461 fps | 98.1% |
| Somchem S355 | <<locked>> | 80% | 32,938 psi | 58% | 2310 fps | 96.4% |
| Somchem S365 | <<locked>> | 84% | 26,919 psi | 48% | 2238 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 47,543 psi | 84% | 2461 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,235 psi | 75% | 2395 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,739 psi | 67% | 2382 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,464 psi | 68% | 2385 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 31,227 psi | 55% | 2254 fps | 97.3% |
| Vihtavuori N160 | <<locked>> | 88% | 35,752 psi | 63% | 2395 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 43,337 psi | 77% | 2484 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 80% | 36,999 psi | 65% | 2375 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 90% | 37,579 psi | 66% | 2451 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 96% | 33,011 psi | 58% | 2421 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 31,633 psi | 56% | 2274 fps | 95.7% |
| Winchester 748 | <<locked>> | 80% | 42,554 psi | 75% | 2523 fps | 99.7% |
| Winchester 760 | <<locked>> | 94% | 44,628 psi | 79% | 2602 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,102 psi | 69% | 2451 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 103 powders for 7 x 57 loaded with the .284 | 151gr | Warner Tool Co. Flat Line. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,756 fps; across all powders the maximum-charge window runs from 1,611 fps to 2,756 fps. Accurate 3100 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 151.0 gr projectile in 0.284" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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 Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 7 x 57 with the .284 | 151gr | Warner Tool Co. Flat Line they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 2700, Accurate 3100, ADI AR 2209 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.