Load Specifications
Load data in caliber 7 x 57 R with .284 | 161gr | Peregrine VLR-4 bullet and 63 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, 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% | 42,308 psi | 86% | 2382 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 42,409 psi | 86% | 2418 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 44,135 psi | 90% | 2520 fps | 98.3% |
| ADI AR 2206H | <<locked>> | 82% | 43,976 psi | 89% | 2444 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 86% | 42,540 psi | 86% | 2405 fps | 98.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,685 psi | 87% | 2526 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 44,382 psi | 90% | 2464 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 84% | 42,206 psi | 86% | 2431 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 96% | 44,034 psi | 89% | 2530 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 92% | 44,106 psi | 89% | 2559 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,998 psi | 71% | 2379 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 38,624 psi | 78% | 2510 fps | 96.3% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 43,265 psi | 88% | 2451 fps | 98.2% |
| Bofors RP3 | <<locked>> | 88% | 44,164 psi | 90% | 2474 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 86% | 42,409 psi | 86% | 2428 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 82% | 44,382 psi | 90% | 2454 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 43,134 psi | 87% | 2470 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 42,830 psi | 87% | 2477 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,027 psi | 71% | 1552 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 42,801 psi | 87% | 2411 fps | 99.2% |
| IMR 3031 | <<locked>> | 82% | 43,947 psi | 89% | 2448 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 41,858 psi | 85% | 2385 fps | 98.4% |
| IMR 4831 | <<locked>> | 96% | 42,293 psi | 86% | 2467 fps | 98% |
| IMR 4895 | <<locked>> | 84% | 43,236 psi | 88% | 2461 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 82% | 42,685 psi | 87% | 2421 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 44,367 psi | 90% | 2388 fps | 99.1% |
| Lovex S062 | <<locked>> | 86% | 44,019 psi | 89% | 2428 fps | 99.8% |
| Lovex S065 | <<locked>> | 92% | 43,569 psi | 88% | 2425 fps | 96.8% |
| Norma 201 | <<locked>> | 82% | 42,931 psi | 87% | 2398 fps | 99.6% |
| Norma 202 | <<locked>> | 82% | 43,279 psi | 88% | 2408 fps | 100% |
| Norma 203B | <<locked>> | 86% | 44,324 psi | 90% | 2470 fps | 99.2% |
| Norma URP | <<locked>> | 96% | 44,469 psi | 90% | 2520 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 86% | 44,150 psi | 90% | 2490 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 96% | 43,439 psi | 88% | 2507 fps | 96.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,418 psi | 72% | 1588 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 43,018 psi | 87% | 2415 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 44,425 psi | 90% | 2530 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 44,135 psi | 90% | 2566 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 44,121 psi | 89% | 2543 fps | 98.1% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 44,599 psi | 90% | 2559 fps | 97.6% |
| Rottweil R 902 | <<locked>> | 84% | 43,265 psi | 88% | 2395 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 90% | 44,077 psi | 89% | 2467 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 43,569 psi | 88% | 2425 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 82% | 42,685 psi | 87% | 2421 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 44,019 psi | 89% | 2428 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,699 psi | 87% | 2470 fps | 98.9% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 44,309 psi | 90% | 2434 fps | 97.7% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 42,540 psi | 86% | 2415 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 44,483 psi | 90% | 2359 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 44,063 psi | 89% | 2359 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 44,063 psi | 89% | 2434 fps | 99% |
| Somchem S355 | <<locked>> | 88% | 42,192 psi | 86% | 2421 fps | 99.2% |
| Somchem S365 | <<locked>> | 98% | 42,221 psi | 86% | 2520 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 84% | 42,960 psi | 87% | 2382 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 43,758 psi | 89% | 2395 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 43,091 psi | 87% | 2408 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 94% | 43,555 psi | 88% | 2467 fps | 98% |
| Vihtavuori N540 | <<locked>> | 84% | 42,018 psi | 85% | 2385 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 42,656 psi | 87% | 2470 fps | 97.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 37,536 psi | 76% | 2448 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 44,005 psi | 89% | 2454 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,256 psi | 63% | 2359 fps | 96.6% |
| Winchester StaBALL Match | <<locked>> | 82% | 41,872 psi | 85% | 2421 fps | 99.2% |
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% | 36,854 psi | 75% | 2290 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,882 psi | 71% | 2283 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 33,460 psi | 68% | 2313 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 41,220 psi | 84% | 2395 fps | 98.7% |
| ADI AR 2208 | <<locked>> | 80% | 35,215 psi | 71% | 2260 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 37,173 psi | 75% | 2411 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,272 psi | 70% | 2274 fps | 97.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,014 psi | 75% | 2333 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 34,272 psi | 70% | 2326 fps | 95.6% |
| Alliant Reloder-17 | 37.3 gr | 80% | 29,443 psi | 60% | 2231 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 31,053 psi | 63% | 2280 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 36,129 psi | 73% | 2454 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,263 psi | 82% | 2395 fps | 97.5% |
| Bofors RP3 | <<locked>> | 80% | 33,605 psi | 68% | 2274 fps | 97.8% |
| Hodgdon H380 | <<locked>> | 80% | 34,737 psi | 70% | 2277 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 41,568 psi | 84% | 2405 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 29,298 psi | 59% | 2182 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,478 psi | 76% | 2375 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,991 psi | 53% | 1385 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,074 psi | 81% | 2362 fps | 98.8% |
| IMR 3031 | <<locked>> | 80% | 40,973 psi | 83% | 2402 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,912 psi | 75% | 2290 fps | 97.3% |
| IMR 4831 | <<locked>> | 88% | 32,503 psi | 66% | 2274 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 37,884 psi | 77% | 2359 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 80% | 39,856 psi | 81% | 2375 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 41,597 psi | 84% | 2339 fps | 98.7% |
| Lovex S062 | <<locked>> | 80% | 36,390 psi | 74% | 2290 fps | 98.7% |
| Lovex S065 | <<locked>> | 88% | 38,276 psi | 78% | 2326 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 40,161 psi | 81% | 2349 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 40,480 psi | 82% | 2359 fps | 100% |
| Norma 203B | <<locked>> | 80% | 36,361 psi | 74% | 2320 fps | 97.6% |
| Norma URP | <<locked>> | 88% | 34,040 psi | 69% | 2316 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 35,766 psi | 73% | 2333 fps | 97.3% |
| Ramshot Hunter | <<locked>> | 94% | 40,770 psi | 83% | 2457 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,150 psi | 53% | 1414 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 40,379 psi | 82% | 2365 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 38,624 psi | 78% | 2425 fps | 97.7% |
| ReloadSwiss RS 60 | 37.3 gr | 80% | 31,401 psi | 64% | 2297 fps | 98.7% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 35,824 psi | 73% | 2382 fps | 95.8% |
| ReloadSwiss RS 70 | 43.6 gr | 92% | 38,914 psi | 79% | 2444 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 38,203 psi | 77% | 2303 fps | 99% |
| Rottweil R 903 | <<locked>> | 80% | 31,531 psi | 64% | 2221 fps | 96.9% |
| Shooters World Long Rifle | <<locked>> | 88% | 38,276 psi | 78% | 2326 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,856 psi | 81% | 2375 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 36,390 psi | 74% | 2290 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,880 psi | 67% | 2270 fps | 96.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,205 psi | 84% | 2379 fps | 97% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,871 psi | 81% | 2369 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,722 psi | 70% | 2195 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 41,307 psi | 84% | 2313 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,002 psi | 83% | 2382 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 32,590 psi | 66% | 2231 fps | 97% |
| Somchem S365 | <<locked>> | 84% | 26,701 psi | 54% | 2165 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 37,666 psi | 76% | 2297 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,348 psi | 78% | 2303 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,966 psi | 63% | 2175 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 86% | 33,605 psi | 68% | 2270 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 36,912 psi | 75% | 2293 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 35,012 psi | 71% | 2320 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 94% | 30,879 psi | 63% | 2297 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 29,602 psi | 60% | 2156 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,138 psi | 59% | 2293 fps | 95.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,943 psi | 79% | 2365 fps | 98.7% |
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 86 powders for 7 x 57 R loaded with the .284 | 161gr | Peregrine VLR-4. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,566 fps; across all powders the maximum-charge window runs from 1,552 fps to 2,566 fps. Accurate 3100 gives the best case fill at 100 %, and 86 of the 86 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 161.0 gr projectile in 0.284" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Reloder-19 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, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for 7 x 57 R with the .284 | 161gr | Peregrine VLR-4 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.