Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:160 gr
Bullet Diameter:0.284"
Bullet Length:<<locked>>
Caliber:7 x 57 R load data
Case Length (l3):2.244"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:60 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:23.62"
Max. allowed Pressure:49,313 psi
Recommended Twist Rate:1:11.0
Load data in caliber 7 x 57 R with .284 | 160gr | Peregrine Bushmaster (VRG-3) bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and ReloadSwiss RS 62.
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>> | 82% | 42,902 psi | 87% | 2418 fps | 100% |
| Accurate 2495 | <<locked>> | 82% | 42,598 psi | 86% | 2411 fps | 100% |
| Accurate 3100ᴾ | <<locked>> | 100% | 39,552 psi | 80% | 2451 fps | 95.9% |
| Accurate 4064 | <<locked>> | 84% | 43,134 psi | 87% | 2461 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 43,178 psi | 88% | 2461 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 42,395 psi | 86% | 2520 fps | 98.4% |
| Accurate 4350 | <<locked>> | 92% | 42,134 psi | 85% | 2513 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 84% | 42,525 psi | 86% | 2441 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 84% | 42,540 psi | 86% | 2438 fps | 98.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 42,946 psi | 87% | 2569 fps | 98.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 42,714 psi | 87% | 2562 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 42,308 psi | 86% | 2464 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 42,032 psi | 85% | 2457 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 82% | 42,641 psi | 86% | 2477 fps | 98.9% |
| Alliant Reloder-15 | <<locked>> | 82% | 42,395 psi | 86% | 2467 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 41,916 psi | 85% | 2530 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 94% | 44,614 psi | 90% | 2579 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 88% | 41,887 psi | 85% | 2552 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 90% | 44,585 psi | 90% | 2602 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,290 psi | 78% | 2487 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,130 psi | 77% | 2480 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,511 psi | 86% | 2631 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,366 psi | 86% | 2628 fps | 98.1% |
| Bofors RP3 | <<locked>> | 84% | 41,989 psi | 85% | 2470 fps | 99.6% |
| Bofors RP3 | <<locked>> | 86% | 44,411 psi | 90% | 2510 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 84% | 42,873 psi | 87% | 2474 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 84% | 42,627 psi | 86% | 2467 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 43,990 psi | 89% | 2523 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 43,758 psi | 89% | 2516 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 43,453 psi | 88% | 2520 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 43,192 psi | 88% | 2513 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,317 psi | 72% | 1591 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,230 psi | 71% | 1588 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 42,032 psi | 85% | 2425 fps | 98.8% |
| IMR 4064 | <<locked>> | 82% | 41,756 psi | 85% | 2418 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,585 psi | 90% | 2444 fps | 96.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,556 psi | 90% | 2474 fps | 96% |
| IMR 4831 | <<locked>> | 94% | 43,337 psi | 88% | 2520 fps | 98.6% |
| IMR 4831 | <<locked>> | 94% | 43,091 psi | 87% | 2513 fps | 98.5% |
| IMR 4895 | <<locked>> | 82% | 43,729 psi | 89% | 2503 fps | 99.4% |
| IMR 4895 | <<locked>> | 82% | 43,439 psi | 88% | 2497 fps | 99.3% |
| Lovex S062 | <<locked>> | 84% | 44,469 psi | 90% | 2470 fps | 99.9% |
| Lovex S062 | <<locked>> | 84% | 44,179 psi | 90% | 2464 fps | 99.9% |
| Lovex S065 | <<locked>> | 90% | 44,005 psi | 89% | 2470 fps | 97.4% |
| Lovex S065 | <<locked>> | 90% | 43,787 psi | 89% | 2464 fps | 97.3% |
| Lovex S070 | <<locked>> | 92% | 44,440 psi | 90% | 2497 fps | 96.4% |
| Lovex S070 | <<locked>> | 92% | 44,208 psi | 90% | 2490 fps | 96.3% |
| Norma 203B | <<locked>> | 82% | 41,974 psi | 85% | 2464 fps | 99.1% |
| Norma 203B | <<locked>> | 84% | 44,353 psi | 90% | 2503 fps | 99.4% |
| Norma URP | <<locked>> | 92% | 42,438 psi | 86% | 2516 fps | 98.3% |
| Norma URP | <<locked>> | 92% | 42,192 psi | 86% | 2510 fps | 98.2% |
| Ramshot Big Game | <<locked>> | 82% | 41,524 psi | 84% | 2477 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 84% | 44,483 psi | 90% | 2526 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 94% | 44,208 psi | 90% | 2559 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 94% | 44,005 psi | 89% | 2552 fps | 97% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,708 psi | 72% | 1627 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,911 psi | 73% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,207 psi | 88% | 2457 fps | 96.5% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,294 psi | 88% | 2457 fps | 96.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 41,756 psi | 85% | 2559 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 44,440 psi | 90% | 2605 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 42,105 psi | 85% | 2539 fps | 98.1% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 41,887 psi | 85% | 2533 fps | 98% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,279 psi | 86% | 2556 fps | 97.6% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 41,843 psi | 85% | 2546 fps | 97.4% |
| Rottweil R 902 | <<locked>> | 82% | 43,555 psi | 88% | 2438 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 82% | 43,584 psi | 88% | 2434 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 86% | 41,858 psi | 85% | 2461 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 86% | 41,916 psi | 85% | 2461 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 44,005 psi | 89% | 2470 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 43,787 psi | 89% | 2464 fps | 97.3% |
| Shooters World Precision | <<locked>> | 84% | 44,469 psi | 90% | 2470 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 44,179 psi | 90% | 2464 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 92% | 44,440 psi | 90% | 2497 fps | 96.4% |
| Shooters World SW4350 | <<locked>> | 92% | 44,208 psi | 90% | 2490 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 43,381 psi | 88% | 2516 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 43,120 psi | 87% | 2510 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 42,018 psi | 85% | 2356 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 42,061 psi | 85% | 2352 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,569 psi | 88% | 2421 fps | 95.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,308 psi | 88% | 2415 fps | 95.8% |
| Somchem S355 | <<locked>> | 86% | 42,830 psi | 87% | 2467 fps | 99.5% |
| Somchem S355 | <<locked>> | 86% | 42,583 psi | 86% | 2461 fps | 99.4% |
| Somchem S365 | <<locked>> | 96% | 43,047 psi | 87% | 2569 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 42,815 psi | 87% | 2562 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 43,279 psi | 88% | 2418 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 42,946 psi | 87% | 2411 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 43,918 psi | 89% | 2428 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 43,918 psi | 89% | 2428 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 43,743 psi | 89% | 2454 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 43,468 psi | 88% | 2448 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 44,541 psi | 90% | 2520 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 92% | 44,309 psi | 90% | 2513 fps | 98.5% |
| Vihtavuori N540 | <<locked>> | 82% | 42,264 psi | 86% | 2421 fps | 100% |
| Vihtavuori N540 | <<locked>> | 82% | 42,032 psi | 85% | 2415 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 43,511 psi | 88% | 2516 fps | 98.2% |
| Vihtavuori N550 | <<locked>> | 92% | 43,294 psi | 88% | 2510 fps | 98.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,800 psi | 85% | 2556 fps | 98.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,582 psi | 84% | 2549 fps | 98.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 44,338 psi | 90% | 2497 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 44,179 psi | 90% | 2493 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,069 psi | 69% | 2484 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,910 psi | 69% | 2477 fps | 98.6% |
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% | 40,263 psi | 82% | 2375 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,914 psi | 81% | 2369 fps | 100% |
| Accurate 3100 | <<locked>> | 98% | 37,014 psi | 75% | 2402 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 38,087 psi | 77% | 2372 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 37,826 psi | 77% | 2365 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 31,821 psi | 65% | 2303 fps | 95.2% |
| Accurate 4350 | <<locked>> | 84% | 31,575 psi | 64% | 2297 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 37,652 psi | 76% | 2346 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 37,391 psi | 76% | 2339 fps | 97.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,118 psi | 81% | 2513 fps | 98.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,885 psi | 81% | 2507 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,159 psi | 75% | 2365 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,883 psi | 75% | 2356 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,842 psi | 81% | 2421 fps | 98.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,595 psi | 80% | 2415 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 84% | 32,721 psi | 66% | 2323 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 32,518 psi | 66% | 2316 fps | 95.4% |
| Alliant Reloder-17 | 40.2 gr | 80% | 31,937 psi | 65% | 2333 fps | 97.1% |
| Alliant Reloder-17 | 40.2 gr | 80% | 31,749 psi | 64% | 2326 fps | 97% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,733 psi | 60% | 2280 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,559 psi | 60% | 2274 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 94% | 34,360 psi | 70% | 2451 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 94% | 34,200 psi | 69% | 2444 fps | 95.1% |
| Bofors RP3 | <<locked>> | 80% | 36,492 psi | 74% | 2362 fps | 98.8% |
| Bofors RP3 | <<locked>> | 80% | 36,245 psi | 74% | 2359 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 80% | 37,376 psi | 76% | 2365 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 80% | 37,405 psi | 76% | 2365 fps | 96.5% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 27,978 psi | 57% | 2178 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 27,789 psi | 56% | 2172 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,553 psi | 82% | 2467 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,306 psi | 82% | 2461 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,353 psi | 53% | 1421 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,223 psi | 53% | 1417 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,537 psi | 80% | 2375 fps | 98.3% |
| IMR 4064 | <<locked>> | 80% | 39,262 psi | 80% | 2369 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 42,018 psi | 85% | 2395 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 42,018 psi | 85% | 2425 fps | 95.3% |
| IMR 4831 | <<locked>> | 84% | 31,198 psi | 63% | 2270 fps | 95% |
| IMR 4831 | <<locked>> | 86% | 33,025 psi | 67% | 2313 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 40,857 psi | 83% | 2451 fps | 99% |
| IMR 4895 | <<locked>> | 80% | 40,596 psi | 82% | 2444 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 39,073 psi | 79% | 2375 fps | 99.4% |
| Lovex S062 | <<locked>> | 80% | 39,073 psi | 79% | 2372 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 36,289 psi | 74% | 2320 fps | 95.2% |
| Lovex S065 | <<locked>> | 84% | 36,303 psi | 74% | 2320 fps | 95.1% |
| Lovex S070 | <<locked>> | 90% | 41,611 psi | 84% | 2444 fps | 95.6% |
| Lovex S070 | <<locked>> | 90% | 41,365 psi | 84% | 2441 fps | 95.5% |
| Norma 203B | <<locked>> | 80% | 39,233 psi | 80% | 2411 fps | 98.7% |
| Norma 203B | <<locked>> | 80% | 38,957 psi | 79% | 2405 fps | 98.6% |
| Norma URP | <<locked>> | 84% | 32,561 psi | 66% | 2313 fps | 95.3% |
| Norma URP | <<locked>> | 84% | 32,358 psi | 66% | 2306 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 38,783 psi | 79% | 2425 fps | 98.4% |
| Ramshot Big Game | <<locked>> | 80% | 38,537 psi | 78% | 2418 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 38,740 psi | 79% | 2451 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 90% | 38,551 psi | 78% | 2444 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,527 psi | 54% | 1453 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,658 psi | 54% | 1453 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,451 psi | 82% | 2405 fps | 95.7% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,480 psi | 82% | 2405 fps | 95.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,084 psi | 69% | 2398 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,852 psi | 69% | 2388 fps | 99.6% |
| ReloadSwiss RS 62 | 43.2 gr | 86% | 34,200 psi | 69% | 2379 fps | 95.7% |
| ReloadSwiss RS 62 | 43.2 gr | 86% | 33,997 psi | 69% | 2372 fps | 95.6% |
| ReloadSwiss RS 70 | 44.9 gr | 88% | 36,767 psi | 75% | 2438 fps | 95.7% |
| ReloadSwiss RS 70 | 44.9 gr | 88% | 36,593 psi | 74% | 2431 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 40,988 psi | 83% | 2392 fps | 99.6% |
| Rottweil R 902 | <<locked>> | 80% | 40,973 psi | 83% | 2388 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 34,374 psi | 70% | 2313 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 80% | 34,142 psi | 69% | 2306 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 84% | 36,289 psi | 74% | 2320 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 84% | 36,303 psi | 74% | 2320 fps | 95.1% |
| Shooters World Precision | <<locked>> | 80% | 39,073 psi | 79% | 2375 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 39,073 psi | 79% | 2372 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 41,611 psi | 84% | 2444 fps | 95.6% |
| Shooters World SW4350 | <<locked>> | 90% | 41,365 psi | 84% | 2441 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,578 psi | 72% | 2365 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,346 psi | 72% | 2356 fps | 97.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,072 psi | 75% | 2270 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,796 psi | 75% | 2264 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 40,640 psi | 82% | 2369 fps | 95% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 40,451 psi | 82% | 2362 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 35,360 psi | 72% | 2320 fps | 98.2% |
| Somchem S355 | <<locked>> | 80% | 35,114 psi | 71% | 2316 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 25,411 psi | 52% | 2159 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 25,251 psi | 51% | 2149 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 40,567 psi | 82% | 2372 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,263 psi | 82% | 2365 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,292 psi | 84% | 2385 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,031 psi | 83% | 2379 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,576 psi | 68% | 2264 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 80% | 33,344 psi | 68% | 2257 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 33,997 psi | 69% | 2313 fps | 95.8% |
| Vihtavuori N160 | <<locked>> | 84% | 33,794 psi | 69% | 2306 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 39,537 psi | 80% | 2372 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 39,566 psi | 80% | 2372 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 33,402 psi | 68% | 2313 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 84% | 33,185 psi | 67% | 2306 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 90% | 29,950 psi | 61% | 2300 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 90% | 29,762 psi | 60% | 2293 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,660 psi | 60% | 2192 fps | 96.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,501 psi | 60% | 2185 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 94% | 27,949 psi | 57% | 2297 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 94% | 27,804 psi | 56% | 2290 fps | 95.1% |
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 R loaded with the .284 | 160gr | Peregrine Bushmaster (VRG-3). Alliant Reloder-26 delivers the highest muzzle velocity at 2,631 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,631 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 (340 MPa), the top charges use 69–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-23 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 70, Alliant Reloder-17, ReloadSwiss RS 62 rank at the top here: for 7 x 57 R with the .284 | 160gr | Peregrine Bushmaster (VRG-3) 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.