Load Specifications
Load data in caliber 7 x 57 R with .284 | 155gr | Frontier PH HPFB bullet and 55 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 70.
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>> | 84% | 44,135 psi | 90% | 2457 fps | 100% |
| Accurate 4064 | <<locked>> | 86% | 44,324 psi | 90% | 2497 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 43,004 psi | 87% | 2546 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 86% | 43,439 psi | 88% | 2470 fps | 98.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 43,976 psi | 89% | 2602 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 42,917 psi | 87% | 2490 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 84% | 43,265 psi | 88% | 2500 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 94% | 42,496 psi | 86% | 2552 fps | 98% |
| Alliant Reloder-17 | <<locked>> | 90% | 42,525 psi | 86% | 2579 fps | 99.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 36,318 psi | 74% | 2454 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 40,306 psi | 82% | 2592 fps | 96.6% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 44,324 psi | 90% | 2520 fps | 98.2% |
| Bofors RP3 | <<locked>> | 86% | 42,772 psi | 87% | 2500 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 86% | 43,729 psi | 89% | 2500 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 44,324 psi | 90% | 2543 fps | 99.4% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 44,309 psi | 90% | 2552 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,244 psi | 71% | 1594 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 43,787 psi | 89% | 2480 fps | 99.2% |
| IMR 4064 | <<locked>> | 84% | 42,931 psi | 87% | 2451 fps | 98.4% |
| IMR 4831 | <<locked>> | 96% | 43,918 psi | 89% | 2546 fps | 98.1% |
| IMR 4895 | <<locked>> | 84% | 44,324 psi | 90% | 2530 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 82% | 44,237 psi | 90% | 2497 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 42,772 psi | 87% | 2457 fps | 99.5% |
| Lovex S065 | <<locked>> | 90% | 42,090 psi | 85% | 2448 fps | 96.2% |
| Norma 201 | <<locked>> | 82% | 44,280 psi | 90% | 2470 fps | 99.7% |
| Norma 202 | <<locked>> | 82% | 44,498 psi | 90% | 2477 fps | 100% |
| Norma 203B | <<locked>> | 84% | 42,583 psi | 86% | 2490 fps | 98.8% |
| Norma URP | <<locked>> | 94% | 42,888 psi | 87% | 2539 fps | 97.7% |
| Ramshot Big Game | <<locked>> | 84% | 42,453 psi | 86% | 2510 fps | 98.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,679 psi | 72% | 1634 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 44,411 psi | 90% | 2487 fps | 96% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 42,772 psi | 87% | 2552 fps | 98.4% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 42,598 psi | 86% | 2592 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 42,424 psi | 86% | 2562 fps | 97.5% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 43,018 psi | 87% | 2579 fps | 96.9% |
| Rottweil R 902 | <<locked>> | 82% | 42,177 psi | 86% | 2425 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 88% | 42,641 psi | 86% | 2490 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,090 psi | 85% | 2448 fps | 96.2% |
| Shooters World Match Rifle | <<locked>> | 82% | 44,237 psi | 90% | 2497 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 42,772 psi | 87% | 2457 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 44,034 psi | 89% | 2543 fps | 98.9% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 43,758 psi | 89% | 2487 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 42,960 psi | 87% | 2385 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 43,540 psi | 88% | 2493 fps | 99.2% |
| Somchem S365 | <<locked>> | 98% | 43,410 psi | 88% | 2592 fps | 99.9% |
| Vihtavuori N135 | <<locked>> | 84% | 44,005 psi | 89% | 2448 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 42,090 psi | 85% | 2415 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 44,599 psi | 90% | 2484 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 92% | 42,047 psi | 85% | 2487 fps | 97.4% |
| Vihtavuori N540 | <<locked>> | 84% | 43,294 psi | 88% | 2454 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 44,179 psi | 90% | 2543 fps | 97.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 39,117 psi | 79% | 2523 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 42,525 psi | 86% | 2477 fps | 99.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 32,445 psi | 66% | 2434 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 43,134 psi | 87% | 2493 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% | 38,725 psi | 79% | 2369 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 36,637 psi | 74% | 2362 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 34,882 psi | 71% | 2388 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 36,056 psi | 73% | 2323 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 38,319 psi | 78% | 2484 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,549 psi | 72% | 2346 fps | 98% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,203 psi | 77% | 2402 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 88% | 35,404 psi | 72% | 2398 fps | 95.7% |
| Alliant Reloder-17 | 38.6 gr | 80% | 30,618 psi | 62% | 2303 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 30,342 psi | 62% | 2300 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 98% | 37,579 psi | 76% | 2530 fps | 95.6% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 41,452 psi | 84% | 2467 fps | 97.6% |
| Bofors RP3 | <<locked>> | 80% | 35,027 psi | 71% | 2346 fps | 98% |
| Hodgdon H380 | <<locked>> | 80% | 35,955 psi | 73% | 2349 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,574 psi | 62% | 2254 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 38,508 psi | 78% | 2444 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,223 psi | 53% | 1424 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,133 psi | 83% | 2431 fps | 98.8% |
| IMR 4064 | <<locked>> | 80% | 37,840 psi | 77% | 2352 fps | 97.3% |
| IMR 4831 | <<locked>> | 88% | 33,808 psi | 69% | 2346 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 39,088 psi | 79% | 2431 fps | 98.1% |
| Lovex D073.6 | <<locked>> | 80% | 41,205 psi | 84% | 2444 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 37,739 psi | 77% | 2362 fps | 98.8% |
| Lovex S065 | <<locked>> | 88% | 39,595 psi | 80% | 2398 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 41,626 psi | 84% | 2421 fps | 99.4% |
| Norma 202 | <<locked>> | 80% | 41,785 psi | 85% | 2431 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,608 psi | 76% | 2392 fps | 97.7% |
| Norma URP | <<locked>> | 88% | 35,230 psi | 71% | 2385 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 36,970 psi | 75% | 2402 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,426 psi | 54% | 1457 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 41,524 psi | 84% | 2434 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 39,784 psi | 81% | 2497 fps | 97.8% |
| ReloadSwiss RS 60 | 38.6 gr | 80% | 32,576 psi | 66% | 2369 fps | 98.8% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 34,650 psi | 70% | 2398 fps | 95% |
| ReloadSwiss RS 70 | 45.1 gr | 92% | 40,176 psi | 81% | 2520 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 39,668 psi | 80% | 2379 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 32,938 psi | 67% | 2293 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 39,595 psi | 80% | 2398 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,205 psi | 84% | 2444 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 37,739 psi | 77% | 2362 fps | 98.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 33,895 psi | 69% | 2339 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,901 psi | 83% | 2434 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,694 psi | 72% | 2257 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 33,895 psi | 69% | 2300 fps | 97.1% |
| Somchem S365 | <<locked>> | 82% | 26,107 psi | 53% | 2185 fps | 95% |
| Vihtavuori N135 | <<locked>> | 80% | 38,870 psi | 79% | 2365 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,523 psi | 80% | 2372 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,198 psi | 65% | 2244 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 86% | 34,824 psi | 71% | 2343 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 38,029 psi | 77% | 2362 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 88% | 36,405 psi | 74% | 2395 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 94% | 32,314 psi | 66% | 2372 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 30,603 psi | 62% | 2221 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 98% | 30,530 psi | 62% | 2375 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 40,248 psi | 82% | 2438 fps | 98.8% |
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 55 powders for 7 x 57 R loaded with the .284 | 155gr | Frontier PH HPFB. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,602 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,602 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 55 of the 55 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 66–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.284" calls for a 1:9.5 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, Alliant Reloder-17, ReloadSwiss RS 70 rank at the top here: for 7 x 57 R with the .284 | 155gr | Frontier PH HPFB 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.