Load Specifications
Load data in caliber 7 x 57 R with .284 | 160gr | Speer Deep Curl Soft Point bullet and 44 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Somchem S365 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 3100ᴾ | <<locked>> | 100% | 42,554 psi | 86% | 2507 fps | 96.9% |
| Accurate 4064 | <<locked>> | 82% | 43,265 psi | 88% | 2457 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 42,279 psi | 86% | 2516 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 82% | 41,814 psi | 85% | 2428 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 44,367 psi | 90% | 2500 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 92% | 44,222 psi | 90% | 2575 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 88% | 44,222 psi | 90% | 2602 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,480 psi | 82% | 2533 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 42,177 psi | 86% | 2628 fps | 98.2% |
| Bofors RP3 | <<locked>> | 84% | 44,295 psi | 90% | 2507 fps | 99.9% |
| Hodgdon H380 | <<locked>> | 82% | 42,351 psi | 86% | 2464 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 43,482 psi | 88% | 2513 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,679 psi | 72% | 1604 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 43,961 psi | 89% | 2461 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 43,976 psi | 89% | 2464 fps | 96% |
| IMR 4831 | <<locked>> | 92% | 43,047 psi | 87% | 2516 fps | 98.6% |
| Lovex S062 | <<locked>> | 82% | 43,990 psi | 89% | 2464 fps | 99.9% |
| Lovex S065 | <<locked>> | 88% | 43,424 psi | 88% | 2461 fps | 97.4% |
| Lovex S070 | <<locked>> | 90% | 44,092 psi | 89% | 2493 fps | 96.5% |
| Norma 203B | <<locked>> | 82% | 44,063 psi | 89% | 2503 fps | 99.5% |
| Norma URP | <<locked>> | 90% | 42,090 psi | 85% | 2513 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 82% | 43,700 psi | 89% | 2516 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 92% | 43,656 psi | 89% | 2549 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,143 psi | 73% | 1640 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,554 psi | 86% | 2448 fps | 96.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 44,164 psi | 90% | 2602 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 41,843 psi | 85% | 2536 fps | 98.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 44,411 psi | 90% | 2602 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 86% | 44,440 psi | 90% | 2503 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 88% | 43,424 psi | 88% | 2461 fps | 97.4% |
| Shooters World Precision | <<locked>> | 82% | 43,990 psi | 89% | 2464 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 90% | 44,092 psi | 89% | 2493 fps | 96.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 42,699 psi | 87% | 2503 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 43,932 psi | 89% | 2385 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,120 psi | 87% | 2415 fps | 95.9% |
| Somchem S355 | <<locked>> | 84% | 42,366 psi | 86% | 2457 fps | 99.5% |
| Somchem S365 | <<locked>> | 94% | 43,004 psi | 87% | 2569 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 43,091 psi | 87% | 2441 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 44,048 psi | 89% | 2513 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 82% | 44,498 psi | 90% | 2457 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 43,105 psi | 87% | 2513 fps | 98.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,614 psi | 90% | 2605 fps | 99.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 43,598 psi | 88% | 2487 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,289 psi | 74% | 2546 fps | 99.5% |
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 3100 | <<locked>> | 96% | 37,057 psi | 75% | 2402 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 40,756 psi | 83% | 2415 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 32,010 psi | 65% | 2303 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 39,479 psi | 80% | 2382 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,218 psi | 80% | 2405 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,503 psi | 66% | 2320 fps | 95.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,910 psi | 69% | 2382 fps | 97.9% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,050 psi | 57% | 2231 fps | 95.2% |
| Alliant Reloder-26 | 48.7 gr | 92% | 34,185 psi | 69% | 2448 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 39,001 psi | 79% | 2411 fps | 99.3% |
| Hodgdon H380 | <<locked>> | 80% | 39,682 psi | 80% | 2415 fps | 97.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,833 psi | 56% | 2172 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,658 psi | 54% | 1434 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,452 psi | 84% | 2415 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,278 psi | 84% | 2415 fps | 95.2% |
| IMR 4831 | <<locked>> | 82% | 31,067 psi | 63% | 2264 fps | 95.1% |
| Lovex S062 | <<locked>> | 80% | 41,510 psi | 84% | 2418 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 36,100 psi | 73% | 2316 fps | 95.2% |
| Lovex S070 | <<locked>> | 88% | 41,379 psi | 84% | 2441 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 41,292 psi | 84% | 2451 fps | 99.1% |
| Norma URP | <<locked>> | 82% | 32,460 psi | 66% | 2306 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 40,959 psi | 83% | 2467 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 38,435 psi | 78% | 2448 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,890 psi | 55% | 1463 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,958 psi | 81% | 2395 fps | 95.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,056 psi | 73% | 2444 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,055 psi | 69% | 2372 fps | 95.8% |
| ReloadSwiss RS 70 | 45.1 gr | 86% | 36,230 psi | 73% | 2428 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 36,637 psi | 74% | 2359 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 36,100 psi | 73% | 2316 fps | 95.2% |
| Shooters World Precision | <<locked>> | 80% | 41,510 psi | 84% | 2418 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 41,379 psi | 84% | 2441 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,463 psi | 76% | 2405 fps | 98.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,986 psi | 79% | 2303 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 40,350 psi | 82% | 2365 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 37,478 psi | 76% | 2362 fps | 98.7% |
| Somchem S365 | 39.2 gr | 80% | 27,209 psi | 55% | 2211 fps | 96.8% |
| Vihtavuori N150 | <<locked>> | 80% | 35,549 psi | 72% | 2303 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 82% | 33,794 psi | 69% | 2306 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 41,742 psi | 85% | 2411 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 33,301 psi | 68% | 2310 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 88% | 30,124 psi | 61% | 2300 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,372 psi | 64% | 2234 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,065 psi | 57% | 2303 fps | 95.6% |
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 71 powders for 7 x 57 R loaded with the .284 | 160gr | Speer Deep Curl Soft Point. Alliant Reloder-26 delivers the highest muzzle velocity at 2,628 fps; across all powders the maximum-charge window runs from 1,604 fps to 2,628 fps. Accurate 3100 gives the best case fill at 100 %, and 71 of the 71 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 72–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, 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. Alliant Reloder-26, Somchem S365, ReloadSwiss RS 70 rank at the top here: for 7 x 57 R with the .284 | 160gr | Speer Deep Curl Soft Point they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2209, Alliant Reloder-19, Alliant Reloder-22 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.