Load Specifications
Load data in caliber 7 x 57 R with .284 | 165gr | Osprey Virtus bullet and 60 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 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% | 43,120 psi | 87% | 2362 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 43,511 psi | 88% | 2405 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 42,308 psi | 86% | 2457 fps | 98.2% |
| ADI AR 2206H | <<locked>> | 82% | 44,614 psi | 90% | 2425 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 86% | 43,149 psi | 88% | 2385 fps | 98.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 43,671 psi | 89% | 2516 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 42,540 psi | 86% | 2405 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 84% | 42,873 psi | 87% | 2415 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 94% | 42,250 psi | 86% | 2470 fps | 98.4% |
| Alliant Reloder-17 | <<locked>> | 90% | 42,337 psi | 86% | 2497 fps | 99.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,897 psi | 73% | 2372 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 39,682 psi | 80% | 2507 fps | 97.1% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 43,932 psi | 89% | 2434 fps | 98.5% |
| Bofors RP3 | <<locked>> | 86% | 42,003 psi | 85% | 2408 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 86% | 43,468 psi | 88% | 2421 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 43,888 psi | 89% | 2454 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 43,888 psi | 89% | 2464 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,186 psi | 71% | 1532 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 43,410 psi | 88% | 2395 fps | 99.4% |
| IMR 4064 | <<locked>> | 84% | 42,467 psi | 86% | 2365 fps | 98.7% |
| IMR 4831 | <<locked>> | 96% | 43,439 psi | 88% | 2461 fps | 98.5% |
| IMR 4895 | <<locked>> | 84% | 43,918 psi | 89% | 2444 fps | 99.3% |
| Lovex D073.6 | <<locked>> | 82% | 43,743 psi | 89% | 2408 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 42,163 psi | 86% | 2369 fps | 99.7% |
| Lovex S065 | <<locked>> | 92% | 44,266 psi | 90% | 2408 fps | 97.2% |
| Lovex S070 | <<locked>> | 94% | 44,599 psi | 90% | 2434 fps | 96.2% |
| Norma 201 | <<locked>> | 82% | 43,845 psi | 89% | 2385 fps | 99.8% |
| Norma 202 | <<locked>> | 82% | 44,237 psi | 90% | 2392 fps | 100% |
| Norma 203B | <<locked>> | 84% | 42,163 psi | 86% | 2405 fps | 99.1% |
| Norma URP | <<locked>> | 94% | 42,366 psi | 86% | 2454 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 84% | 42,076 psi | 85% | 2425 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 96% | 44,556 psi | 90% | 2500 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,607 psi | 72% | 1572 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 44,034 psi | 89% | 2405 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 42,192 psi | 86% | 2461 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 42,047 psi | 85% | 2500 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 42,148 psi | 85% | 2480 fps | 97.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 42,540 psi | 86% | 2493 fps | 97.4% |
| Rottweil R 902 | <<locked>> | 84% | 44,208 psi | 90% | 2382 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 88% | 42,235 psi | 86% | 2405 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 44,266 psi | 90% | 2408 fps | 97.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 43,743 psi | 89% | 2408 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 42,163 psi | 86% | 2369 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 94% | 44,599 psi | 90% | 2434 fps | 96.2% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 43,801 psi | 89% | 2461 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 43,178 psi | 88% | 2398 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 42,815 psi | 87% | 2306 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 44,034 psi | 89% | 2365 fps | 95.8% |
| Somchem S355 | <<locked>> | 88% | 43,192 psi | 88% | 2411 fps | 99.4% |
| Somchem S365 | <<locked>> | 98% | 43,076 psi | 87% | 2507 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 43,642 psi | 89% | 2362 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 44,425 psi | 90% | 2375 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 44,135 psi | 90% | 2398 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 41,814 psi | 85% | 2408 fps | 97.9% |
| Vihtavuori N540 | <<locked>> | 84% | 42,989 psi | 87% | 2372 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 43,758 psi | 89% | 2461 fps | 98.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,696 psi | 78% | 2441 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 41,989 psi | 85% | 2392 fps | 99.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 31,865 psi | 65% | 2356 fps | 97.5% |
| Winchester StaBALL Match | <<locked>> | 82% | 42,569 psi | 86% | 2405 fps | 99.4% |
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% | 37,782 psi | 77% | 2277 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 35,781 psi | 73% | 2270 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 31,778 psi | 64% | 2247 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 42,134 psi | 85% | 2382 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 35,708 psi | 72% | 2244 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,029 psi | 77% | 2405 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,099 psi | 71% | 2264 fps | 98.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,869 psi | 77% | 2323 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 32,866 psi | 67% | 2267 fps | 95.3% |
| Alliant Reloder-17 | 37.3 gr | 80% | 30,139 psi | 61% | 2228 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 94% | 29,834 psi | 61% | 2224 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 34,534 psi | 70% | 2392 fps | 95.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,205 psi | 84% | 2385 fps | 98% |
| Bofors RP3 | <<locked>> | 80% | 34,229 psi | 69% | 2260 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 80% | 35,317 psi | 72% | 2264 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 28,079 psi | 57% | 2126 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,116 psi | 77% | 2359 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,121 psi | 53% | 1368 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 40,640 psi | 82% | 2346 fps | 99.1% |
| IMR 4064 | <<locked>> | 80% | 37,434 psi | 76% | 2274 fps | 97.7% |
| IMR 4831 | <<locked>> | 88% | 33,402 psi | 68% | 2267 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 38,769 psi | 79% | 2349 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 80% | 40,582 psi | 82% | 2359 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 37,217 psi | 75% | 2277 fps | 99.1% |
| Lovex S065 | <<locked>> | 86% | 36,738 psi | 75% | 2270 fps | 95.1% |
| Lovex S070 | <<locked>> | 92% | 42,090 psi | 85% | 2392 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 41,060 psi | 83% | 2336 fps | 99.6% |
| Norma 202 | <<locked>> | 80% | 41,423 psi | 84% | 2346 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,231 psi | 76% | 2313 fps | 98.1% |
| Norma URP | <<locked>> | 86% | 32,648 psi | 66% | 2257 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 36,622 psi | 74% | 2323 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 92% | 38,928 psi | 79% | 2392 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,295 psi | 53% | 1401 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 40,973 psi | 83% | 2352 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,363 psi | 80% | 2411 fps | 98.1% |
| ReloadSwiss RS 60 | 37.3 gr | 80% | 32,140 psi | 65% | 2290 fps | 99.1% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 34,229 psi | 69% | 2320 fps | 95.5% |
| ReloadSwiss RS 70 | 42.6 gr | 90% | 37,130 psi | 75% | 2382 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 39,030 psi | 79% | 2293 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 80% | 32,358 psi | 66% | 2215 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 86% | 36,738 psi | 75% | 2270 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,582 psi | 82% | 2359 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 37,217 psi | 75% | 2277 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 92% | 42,090 psi | 85% | 2392 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,431 psi | 68% | 2257 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,466 psi | 82% | 2352 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,186 psi | 71% | 2175 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 41,162 psi | 83% | 2316 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 33,373 psi | 68% | 2221 fps | 97.5% |
| Somchem S365 | <<locked>> | 82% | 25,643 psi | 52% | 2113 fps | 95.6% |
| Vihtavuori N135 | <<locked>> | 80% | 38,319 psi | 78% | 2277 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,204 psi | 80% | 2290 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 31,734 psi | 64% | 2165 fps | 98.3% |
| Vihtavuori N160 | <<locked>> | 86% | 34,185 psi | 69% | 2260 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 37,478 psi | 76% | 2277 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 33,634 psi | 68% | 2264 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 94% | 31,778 psi | 64% | 2293 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 28,239 psi | 57% | 2096 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 98% | 29,907 psi | 61% | 2297 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,856 psi | 81% | 2356 fps | 99.1% |
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 60 powders for 7 x 57 R loaded with the .284 | 165gr | Osprey Virtus. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,516 fps; across all powders the maximum-charge window runs from 1,532 fps to 2,516 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 60 of the 60 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 65–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.284" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, Hodgdon TrailBoss 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, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for 7 x 57 R with the .284 | 165gr | Osprey Virtus 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.