Load Specifications
Load data in caliber 7 x 57 with .284 | 161gr | Peregrine VLR-4 bullet and 93 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 Winchester 760.
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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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>> | 82% | 48,298 psi | 85% | 2431 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 49,037 psi | 87% | 2487 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 48,037 psi | 85% | 2507 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 49,400 psi | 87% | 2484 fps | 95.9% |
| Accurate 4064 | <<locked>> | 90% | 49,240 psi | 87% | 2533 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 48,399 psi | 86% | 2598 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 86% | 50,778 psi | 90% | 2566 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 90% | 48,689 psi | 86% | 2516 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 84% | 50,082 psi | 89% | 2523 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 50,067 psi | 89% | 2497 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 49,937 psi | 88% | 2664 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 48,095 psi | 85% | 2536 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 88% | 48,776 psi | 86% | 2552 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,575 psi | 89% | 2654 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 94% | 48,240 psi | 85% | 2641 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,607 psi | 63% | 2402 fps | 97.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,392 psi | 70% | 2539 fps | 96.8% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 50,082 psi | 89% | 2572 fps | 99.3% |
| Bofors RP3 | <<locked>> | 90% | 47,935 psi | 85% | 2546 fps | 99.9% |
| Bofors RP7 | <<locked>> | 94% | 48,849 psi | 86% | 2513 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 82% | 48,820 psi | 86% | 2464 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 48,457 psi | 86% | 2543 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 50,314 psi | 89% | 2631 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 90% | 49,385 psi | 87% | 2556 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 96% | 48,341 psi | 85% | 2595 fps | 96.8% |
| Hodgdon H4895 | <<locked>> | 84% | 48,138 psi | 85% | 2526 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,601 psi | 82% | 2539 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 50,256 psi | 89% | 2605 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 48,892 psi | 86% | 2621 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,070 psi | 62% | 1562 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 49,124 psi | 87% | 2526 fps | 99.8% |
| IMR 3031 | <<locked>> | 86% | 50,995 psi | 90% | 2559 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 48,080 psi | 85% | 2500 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 86% | 48,124 psi | 85% | 2474 fps | 96.5% |
| IMR 4350 | <<locked>> | 98% | 48,994 psi | 87% | 2539 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 94% | 50,995 psi | 90% | 2549 fps | 97% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,255 psi | 87% | 2592 fps | 99.2% |
| IMR 4895 | <<locked>> | 88% | 50,009 psi | 88% | 2582 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 84% | 50,082 psi | 89% | 2523 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 49,908 psi | 88% | 2543 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 50,705 psi | 90% | 2500 fps | 99.8% |
| Lovex S062 | <<locked>> | 90% | 50,850 psi | 90% | 2546 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 50,038 psi | 88% | 2543 fps | 98.2% |
| Lovex S070 | <<locked>> | 98% | 50,343 psi | 89% | 2569 fps | 97.3% |
| Norma 201 | <<locked>> | 86% | 49,298 psi | 87% | 2510 fps | 100% |
| Norma 202 | <<locked>> | 86% | 49,806 psi | 88% | 2516 fps | 100% |
| Norma 203B | <<locked>> | 90% | 51,140 psi | 90% | 2592 fps | 99.8% |
| Norma URP | <<locked>> | 98% | 48,109 psi | 85% | 2592 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 88% | 48,080 psi | 85% | 2562 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,473 psi | 89% | 2635 fps | 98% |
| Ramshot TAC | <<locked>> | 84% | 49,864 psi | 88% | 2530 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 84% | 49,501 psi | 88% | 2552 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 82% | 50,850 psi | 90% | 2523 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,462 psi | 63% | 1598 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 49,734 psi | 88% | 2539 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 48,385 psi | 86% | 2605 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 47,979 psi | 85% | 2641 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 48,008 psi | 85% | 2618 fps | 98.8% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 48,559 psi | 86% | 2641 fps | 98.5% |
| Rottweil R 901 | <<locked>> | 84% | 50,183 psi | 89% | 2493 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 49,719 psi | 88% | 2510 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 51,097 psi | 90% | 2582 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 48,849 psi | 86% | 2513 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 96% | 50,038 psi | 88% | 2543 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 86% | 49,908 psi | 88% | 2543 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 50,850 psi | 90% | 2546 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 50,343 psi | 89% | 2569 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 49,937 psi | 88% | 2598 fps | 99.7% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 47,921 psi | 85% | 2507 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 48,965 psi | 87% | 2536 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 51,097 psi | 90% | 2461 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 51,126 psi | 90% | 2461 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 50,111 psi | 89% | 2497 fps | 96.9% |
| Somchem S321 | <<locked>> | 82% | 50,705 psi | 90% | 2549 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 50,459 psi | 89% | 2461 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 51,068 psi | 90% | 2552 fps | 99.8% |
| Somchem S355 | <<locked>> | 92% | 48,747 psi | 86% | 2539 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,963 psi | 81% | 2595 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 51,111 psi | 90% | 2428 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 48,530 psi | 86% | 2411 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 49,414 psi | 87% | 2484 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 50,270 psi | 89% | 2497 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 49,806 psi | 88% | 2520 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 50,691 psi | 90% | 2592 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 84% | 50,270 psi | 89% | 2520 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 48,399 psi | 86% | 2493 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 49,777 psi | 88% | 2595 fps | 99% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,319 psi | 68% | 2470 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 47,805 psi | 85% | 2526 fps | 99.9% |
| Winchester 748 | <<locked>> | 84% | 49,588 psi | 88% | 2559 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 48,675 psi | 86% | 2598 fps | 96.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,705 psi | 56% | 2385 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 86% | 48,675 psi | 86% | 2543 fps | 99.9% |
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 2015 | <<locked>> | 80% | 45,571 psi | 81% | 2392 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,695 psi | 67% | 2316 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,672 psi | 79% | 2454 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 46,369 psi | 82% | 2434 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 35,694 psi | 63% | 2310 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 34,084 psi | 60% | 2336 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 41,727 psi | 74% | 2415 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 35,650 psi | 63% | 2280 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,816 psi | 77% | 2425 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 43,976 psi | 78% | 2415 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,782 psi | 67% | 2438 fps | 97.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,751 psi | 61% | 2293 fps | 98.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,449 psi | 66% | 2352 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 32,692 psi | 58% | 2297 fps | 95% |
| Alliant Reloder-17 | 38.1 gr | 80% | 29,965 psi | 53% | 2257 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 94% | 29,718 psi | 53% | 2254 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,898 psi | 65% | 2484 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,901 psi | 72% | 2418 fps | 97.8% |
| Bofors RP3 | <<locked>> | 80% | 34,113 psi | 60% | 2293 fps | 98.1% |
| Bofors RP7 | <<locked>> | 92% | 45,847 psi | 81% | 2464 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,861 psi | 81% | 2418 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,322 psi | 75% | 2444 fps | 99.8% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,760 psi | 83% | 2575 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 80% | 35,172 psi | 62% | 2297 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 92% | 42,496 psi | 75% | 2493 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 42,061 psi | 74% | 2425 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,863 psi | 53% | 2205 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,174 psi | 67% | 2402 fps | 99% |
| Hodgdon Superformance | <<locked>> | 94% | 45,513 psi | 80% | 2562 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,918 psi | 46% | 1391 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,553 psi | 72% | 2382 fps | 99% |
| IMR 3031 | <<locked>> | 80% | 41,582 psi | 74% | 2421 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 37,420 psi | 66% | 2310 fps | 97.5% |
| IMR 4166 Enduron | <<locked>> | 82% | 42,482 psi | 75% | 2379 fps | 95% |
| IMR 4350 | <<locked>> | 96% | 46,021 psi | 81% | 2493 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 90% | 45,078 psi | 80% | 2454 fps | 95.7% |
| IMR 4831 | <<locked>> | 88% | 33,083 psi | 58% | 2297 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 38,363 psi | 68% | 2382 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 80% | 43,816 psi | 77% | 2425 fps | 99.7% |
| Lovex D073.6 | <<locked>> | 80% | 40,379 psi | 71% | 2395 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 42,351 psi | 75% | 2362 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 37,144 psi | 66% | 2316 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 38,899 psi | 69% | 2352 fps | 95.6% |
| Lovex S070 | <<locked>> | 92% | 41,655 psi | 74% | 2421 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 40,973 psi | 72% | 2375 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 41,017 psi | 73% | 2379 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,854 psi | 65% | 2343 fps | 97.9% |
| Norma URP | <<locked>> | 88% | 34,621 psi | 61% | 2339 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 36,390 psi | 64% | 2356 fps | 97.5% |
| Ramshot Hunter | <<locked>> | 92% | 38,928 psi | 69% | 2431 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 43,845 psi | 78% | 2431 fps | 97.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 43,062 psi | 76% | 2448 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,514 psi | 84% | 2470 fps | 99.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,353 psi | 47% | 1427 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 40,959 psi | 72% | 2388 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,146 psi | 69% | 2444 fps | 97.9% |
| ReloadSwiss RS 60 | 38.1 gr | 80% | 31,952 psi | 56% | 2323 fps | 98.9% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 34,055 psi | 60% | 2352 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 36,883 psi | 65% | 2411 fps | 95.2% |
| Rottweil R 901 | <<locked>> | 80% | 44,527 psi | 79% | 2408 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,725 psi | 68% | 2326 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 32,039 psi | 57% | 2241 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 92% | 45,847 psi | 81% | 2464 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,899 psi | 69% | 2352 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,379 psi | 71% | 2395 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 37,144 psi | 66% | 2316 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 92% | 41,655 psi | 74% | 2421 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,257 psi | 59% | 2290 fps | 96.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,872 psi | 74% | 2402 fps | 97.2% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,277 psi | 71% | 2385 fps | 98.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,612 psi | 75% | 2336 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,230 psi | 62% | 2215 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 43,845 psi | 78% | 2398 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 47,282 psi | 84% | 2497 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 42,119 psi | 74% | 2339 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,640 psi | 74% | 2402 fps | 98.7% |
| Somchem S355 | <<locked>> | 80% | 33,301 psi | 59% | 2257 fps | 97.3% |
| Somchem S365 | <<locked>> | 82% | 25,338 psi | 45% | 2136 fps | 95.1% |
| Vihtavuori N130 | <<locked>> | 80% | 48,283 psi | 85% | 2392 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 42,946 psi | 76% | 2333 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 38,290 psi | 68% | 2316 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,841 psi | 69% | 2320 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,415 psi | 56% | 2195 fps | 98% |
| Vihtavuori N160 | <<locked>> | 86% | 34,200 psi | 60% | 2297 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 43,816 psi | 77% | 2421 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 37,333 psi | 66% | 2310 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 35,578 psi | 63% | 2343 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 94% | 31,618 psi | 56% | 2323 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,050 psi | 50% | 2126 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 43,207 psi | 76% | 2461 fps | 99.9% |
| Winchester 760 | 42.9 gr | 92% | 42,496 psi | 75% | 2493 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,805 psi | 53% | 2326 fps | 95.9% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,639 psi | 70% | 2388 fps | 98.9% |
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 93 powders for 7 x 57 loaded with the .284 | 161gr | Peregrine VLR-4. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,664 fps; across all powders the maximum-charge window runs from 1,562 fps to 2,664 fps. Alliant Reloder-16 gives the best case fill at 100 %, and 93 of the 93 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 161.0 gr projectile in 0.284" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-16, 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. ReloadSwiss RS 60, Alliant Reloder-17, Winchester 760 rank at the top here: for 7 x 57 with the .284 | 161gr | Peregrine VLR-4 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.