Load Specifications
Load data in caliber 7 x 57 R with .284 | 162gr | RWS Kegelspitz bullet and 42 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, ReloadSwiss RS 70 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 3100ᴾ | <<locked>> | 100% | 43,990 psi | 89% | 2520 fps | 97.5% |
| Accurate 4064 | <<locked>> | 82% | 44,498 psi | 90% | 2467 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 43,511 psi | 88% | 2530 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 82% | 42,888 psi | 87% | 2438 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 42,728 psi | 87% | 2461 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 90% | 42,496 psi | 86% | 2536 fps | 98.9% |
| Alliant Reloder-17 | <<locked>> | 86% | 42,496 psi | 86% | 2559 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,727 psi | 85% | 2546 fps | 99.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 43,410 psi | 88% | 2644 fps | 98.7% |
| Bofors RP3 | <<locked>> | 82% | 42,612 psi | 86% | 2467 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 82% | 43,468 psi | 88% | 2474 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 88% | 43,018 psi | 87% | 2520 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 42,061 psi | 85% | 2477 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,708 psi | 72% | 1601 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 42,250 psi | 86% | 2425 fps | 95.8% |
| IMR 4831 | <<locked>> | 92% | 44,454 psi | 90% | 2530 fps | 99% |
| Lovex S065 | <<locked>> | 88% | 44,425 psi | 90% | 2470 fps | 97.8% |
| Lovex S070 | <<locked>> | 88% | 42,409 psi | 86% | 2454 fps | 96.3% |
| Norma MRP | <<locked>> | 98% | 43,526 psi | 88% | 2605 fps | 96.2% |
| Norma URP | <<locked>> | 90% | 43,221 psi | 88% | 2520 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 90% | 41,959 psi | 85% | 2510 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,463 psi | 74% | 1640 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 43,613 psi | 88% | 2457 fps | 97% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 42,134 psi | 85% | 2556 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 42,989 psi | 87% | 2546 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 42,583 psi | 86% | 2559 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 84% | 42,786 psi | 87% | 2464 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 44,425 psi | 90% | 2470 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 88% | 42,409 psi | 86% | 2454 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 43,845 psi | 89% | 2513 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 42,206 psi | 86% | 2346 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 44,121 psi | 89% | 2425 fps | 96.5% |
| Somchem S355 | <<locked>> | 84% | 43,540 psi | 88% | 2467 fps | 99.7% |
| Somchem S365 | <<locked>> | 94% | 44,164 psi | 90% | 2575 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 43,918 psi | 89% | 2513 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 86% | 44,179 psi | 90% | 2451 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 42,337 psi | 86% | 2470 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 90% | 44,208 psi | 90% | 2520 fps | 98.6% |
| Vihtavuori N555 | <<locked>> | 98% | 43,149 psi | 88% | 2566 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 41,843 psi | 85% | 2448 fps | 99.7% |
| Winchester 760 | <<locked>> | 88% | 43,294 psi | 88% | 2526 fps | 96.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,318 psi | 76% | 2566 fps | 99.8% |
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>> | 94% | 35,853 psi | 73% | 2365 fps | 95.1% |
| Accurate 4064 | <<locked>> | 80% | 41,727 psi | 85% | 2421 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 30,893 psi | 63% | 2267 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 40,263 psi | 82% | 2388 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 40,059 psi | 81% | 2411 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,125 psi | 63% | 2277 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,606 psi | 70% | 2392 fps | 98.4% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,776 psi | 58% | 2244 fps | 95.9% |
| Alliant Reloder-26 | 48.3 gr | 90% | 32,909 psi | 67% | 2405 fps | 95.2% |
| Bofors RP3 | <<locked>> | 80% | 39,871 psi | 81% | 2418 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 80% | 40,480 psi | 82% | 2421 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 86% | 40,321 psi | 82% | 2467 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,703 psi | 58% | 2188 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,789 psi | 54% | 1430 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 82% | 39,726 psi | 81% | 2375 fps | 95% |
| IMR 4831 | <<locked>> | 82% | 32,053 psi | 65% | 2277 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 34,809 psi | 71% | 2280 fps | 95.1% |
| Lovex S070 | <<locked>> | 86% | 39,798 psi | 81% | 2402 fps | 95.5% |
| Norma MRP | <<locked>> | 96% | 40,843 psi | 83% | 2549 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 31,125 psi | 63% | 2264 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 86% | 36,985 psi | 75% | 2408 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,035 psi | 55% | 1463 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,930 psi | 83% | 2408 fps | 96.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,825 psi | 75% | 2451 fps | 100% |
| ReloadSwiss RS 62 | 42.9 gr | 82% | 32,634 psi | 66% | 2329 fps | 95.5% |
| ReloadSwiss RS 70 | 44.7 gr | 84% | 34,853 psi | 71% | 2388 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 37,492 psi | 76% | 2365 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,809 psi | 71% | 2280 fps | 95.1% |
| Shooters World SW4350 | <<locked>> | 86% | 39,798 psi | 81% | 2402 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,551 psi | 78% | 2415 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,769 psi | 81% | 2306 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 41,350 psi | 84% | 2375 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 38,276 psi | 78% | 2369 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 28,050 psi | 57% | 2224 fps | 97.5% |
| Somchem S385 | <<locked>> | 94% | 41,191 psi | 84% | 2464 fps | 95% |
| Vihtavuori N150 | <<locked>> | 80% | 36,347 psi | 74% | 2306 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 32,561 psi | 66% | 2270 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 31,937 psi | 65% | 2267 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 86% | 29,095 psi | 59% | 2264 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 32,111 psi | 65% | 2247 fps | 97.7% |
| Winchester 760 | <<locked>> | 86% | 40,321 psi | 82% | 2467 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 90% | 27,035 psi | 55% | 2260 fps | 95.3% |
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 42 powders for 7 x 57 R loaded with the .284 | 162gr | RWS Kegelspitz. Alliant Reloder-26 delivers the highest muzzle velocity at 2,644 fps; across all powders the maximum-charge window runs from 1,601 fps to 2,644 fps. Accurate 3100 gives the best case fill at 100 %, and 42 of the 42 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 162.0 gr projectile in 0.284" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, 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. Alliant Reloder-26, ReloadSwiss RS 70, ReloadSwiss RS 62 rank at the top here: for 7 x 57 R with the .284 | 162gr | RWS Kegelspitz 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.