Load Specifications
Load data in caliber 7 x 57 R with .284 | 150gr | Osprey Virtus bullet and 65 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 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.
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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 86% | 43,613 psi | 88% | 2503 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 43,888 psi | 89% | 2543 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 42,786 psi | 87% | 2589 fps | 97.5% |
| ADI AR 2206H | <<locked>> | 82% | 42,960 psi | 87% | 2520 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 88% | 43,874 psi | 89% | 2520 fps | 98.1% |
| Alliant AR-Comp | <<locked>> | 82% | 44,614 psi | 90% | 2520 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 41,611 psi | 84% | 2595 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 43,323 psi | 88% | 2543 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 86% | 43,772 psi | 89% | 2556 fps | 98.3% |
| Alliant Reloder-16 | <<locked>> | 96% | 42,757 psi | 87% | 2598 fps | 97.6% |
| Alliant Reloder-17 | <<locked>> | 92% | 42,960 psi | 87% | 2631 fps | 99% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,026 psi | 69% | 2438 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 41,901 psi | 85% | 2520 fps | 97.4% |
| Bofors RP3 | <<locked>> | 88% | 42,946 psi | 87% | 2549 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 82% | 43,381 psi | 88% | 2546 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 88% | 44,179 psi | 90% | 2556 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 82% | 43,323 psi | 88% | 2533 fps | 99% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 44,527 psi | 90% | 2589 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 41,727 psi | 85% | 2552 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,925 psi | 71% | 1621 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 44,556 psi | 90% | 2539 fps | 99.1% |
| IMR 3031 | <<locked>> | 82% | 42,540 psi | 86% | 2530 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 43,294 psi | 88% | 2503 fps | 98.2% |
| IMR 4831 | <<locked>> | 98% | 43,874 psi | 89% | 2589 fps | 97.8% |
| IMR 4895 | <<locked>> | 84% | 42,061 psi | 85% | 2536 fps | 98.5% |
| Lovex D073.6 | <<locked>> | 84% | 44,498 psi | 90% | 2552 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 43,236 psi | 88% | 2461 fps | 98.6% |
| Lovex S062 | <<locked>> | 86% | 42,873 psi | 87% | 2503 fps | 99.4% |
| Lovex S065 | <<locked>> | 92% | 42,148 psi | 85% | 2490 fps | 95.7% |
| Norma 201 | <<locked>> | 84% | 44,396 psi | 90% | 2520 fps | 99.5% |
| Norma 202 | <<locked>> | 82% | 41,989 psi | 85% | 2484 fps | 100% |
| Norma 203B | <<locked>> | 86% | 43,033 psi | 87% | 2543 fps | 98.6% |
| Norma URP | <<locked>> | 96% | 42,960 psi | 87% | 2585 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 86% | 42,859 psi | 87% | 2562 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 44,164 psi | 90% | 2549 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,259 psi | 72% | 1657 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 42,873 psi | 87% | 2602 fps | 98.1% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 43,062 psi | 87% | 2644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 42,627 psi | 86% | 2608 fps | 97.1% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 43,540 psi | 88% | 2628 fps | 96.5% |
| Rottweil R 902 | <<locked>> | 84% | 42,293 psi | 86% | 2474 fps | 99.3% |
| Rottweil R 903 | <<locked>> | 90% | 42,859 psi | 87% | 2539 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 42,148 psi | 85% | 2490 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 84% | 44,498 psi | 90% | 2552 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 42,873 psi | 87% | 2503 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 44,541 psi | 90% | 2598 fps | 98.8% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 42,960 psi | 87% | 2503 fps | 96.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 44,048 psi | 89% | 2539 fps | 98.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 43,555 psi | 88% | 2434 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 43,395 psi | 88% | 2438 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 42,888 psi | 87% | 2434 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 42,714 psi | 87% | 2503 fps | 98.4% |
| Somchem S355 | <<locked>> | 90% | 43,627 psi | 88% | 2543 fps | 99% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,700 psi | 89% | 2641 fps | 99.8% |
| Vihtavuori N133 | <<locked>> | 82% | 43,845 psi | 89% | 2431 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 44,164 psi | 90% | 2500 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 42,670 psi | 87% | 2474 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 41,959 psi | 85% | 2484 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 94% | 42,467 psi | 86% | 2539 fps | 97.2% |
| Vihtavuori N540 | <<locked>> | 86% | 43,816 psi | 89% | 2510 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 44,222 psi | 90% | 2589 fps | 97.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,274 psi | 74% | 2510 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 43,062 psi | 87% | 2526 fps | 99% |
| Winchester 748 | <<locked>> | 82% | 44,338 psi | 90% | 2569 fps | 99.9% |
| Winchester StaBALL Match | <<locked>> | 84% | 43,598 psi | 88% | 2546 fps | 99.1% |
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% | 35,621 psi | 72% | 2362 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 33,707 psi | 68% | 2349 fps | 99.5% |
| Accurate 4350 | <<locked>> | 90% | 34,447 psi | 70% | 2421 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 40,059 psi | 81% | 2464 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 34,287 psi | 70% | 2326 fps | 95.5% |
| Alliant AR-Comp | <<locked>> | 80% | 41,626 psi | 84% | 2474 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,129 psi | 73% | 2474 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,228 psi | 67% | 2339 fps | 97% |
| Alliant Reloder-15 | <<locked>> | 80% | 35,853 psi | 73% | 2398 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 90% | 35,723 psi | 72% | 2444 fps | 95.3% |
| Alliant Reloder-17 | 39.5 gr | 82% | 30,690 psi | 62% | 2349 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 98% | 31,981 psi | 65% | 2385 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,073 psi | 79% | 2464 fps | 96.6% |
| Bofors RP3 | <<locked>> | 80% | 32,460 psi | 66% | 2336 fps | 96.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,408 psi | 82% | 2493 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 84% | 38,522 psi | 78% | 2448 fps | 95.7% |
| Hodgdon H4895 | <<locked>> | 80% | 40,364 psi | 82% | 2477 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 30,414 psi | 62% | 2290 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,434 psi | 74% | 2448 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,889 psi | 53% | 1444 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,957 psi | 79% | 2431 fps | 98.1% |
| IMR 3031 | <<locked>> | 80% | 39,726 psi | 81% | 2480 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,911 psi | 73% | 2356 fps | 96.3% |
| IMR 4831 | <<locked>> | 92% | 36,027 psi | 73% | 2438 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 36,695 psi | 74% | 2428 fps | 97.2% |
| Lovex D073.6 | <<locked>> | 80% | 38,754 psi | 79% | 2451 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 40,625 psi | 82% | 2411 fps | 98.1% |
| Lovex S062 | <<locked>> | 80% | 35,360 psi | 72% | 2356 fps | 98% |
| Lovex S065 | <<locked>> | 90% | 39,610 psi | 80% | 2441 fps | 95% |
| Norma 201 | <<locked>> | 80% | 39,088 psi | 79% | 2421 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 39,349 psi | 80% | 2434 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 35,244 psi | 71% | 2388 fps | 96.7% |
| Norma URP | <<locked>> | 90% | 35,389 psi | 72% | 2431 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 34,708 psi | 70% | 2395 fps | 96.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,510 psi | 84% | 2500 fps | 98.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,005 psi | 53% | 1476 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,188 psi | 75% | 2487 fps | 96.7% |
| ReloadSwiss RS 60 | 38.5 gr | 80% | 30,560 psi | 62% | 2356 fps | 97.7% |
| ReloadSwiss RS 62 | 44.3 gr | 92% | 37,188 psi | 75% | 2500 fps | 95.5% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 40,596 psi | 82% | 2566 fps | 95.5% |
| Rottweil R 902 | <<locked>> | 80% | 37,202 psi | 75% | 2375 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 30,472 psi | 62% | 2280 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 39,610 psi | 80% | 2441 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 38,754 psi | 79% | 2451 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 35,360 psi | 72% | 2356 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 31,792 psi | 64% | 2329 fps | 95.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,016 psi | 81% | 2448 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,638 psi | 78% | 2434 fps | 97.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 40,799 psi | 83% | 2388 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 33,620 psi | 68% | 2260 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 40,277 psi | 82% | 2392 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 39,784 psi | 81% | 2451 fps | 97.8% |
| Somchem S355 | <<locked>> | 80% | 31,604 psi | 64% | 2293 fps | 95.9% |
| Somchem S365 | <<locked>> | 86% | 27,644 psi | 56% | 2274 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 41,075 psi | 83% | 2388 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,361 psi | 74% | 2369 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,246 psi | 76% | 2375 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 29,994 psi | 61% | 2238 fps | 96.8% |
| Vihtavuori N160 | <<locked>> | 90% | 37,043 psi | 75% | 2434 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 35,737 psi | 72% | 2362 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 90% | 36,230 psi | 73% | 2434 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 98% | 33,953 psi | 69% | 2454 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 30,734 psi | 62% | 2264 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 41,553 psi | 84% | 2520 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 37,840 psi | 77% | 2438 fps | 98% |
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 65 powders for 7 x 57 R loaded with the .284 | 150gr | Osprey Virtus. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,644 fps; across all powders the maximum-charge window runs from 1,621 fps to 2,644 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 65 of the 65 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 150.0 gr projectile in 0.284" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Hodgdon Hybrid 100V, 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, Alliant Reloder-17, ReloadSwiss RS 62 rank at the top here: for 7 x 57 R with the .284 | 150gr | 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.