Load Specifications
Load data in caliber 7 x 57 R with .284 | 180gr | Lapua ScenarL bullet and 53 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.
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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100ᴾ | <<locked>> | 100% | 42,554 psi | 86% | 2343 fps | 97.6% |
| Accurate 4064 | <<locked>> | 82% | 43,424 psi | 88% | 2287 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 42,235 psi | 86% | 2346 fps | 99% |
| ADI AR 2208 | <<locked>> | 82% | 41,930 psi | 85% | 2260 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 44,585 psi | 90% | 2329 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 44,121 psi | 89% | 2402 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 88% | 44,150 psi | 90% | 2425 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,509 psi | 82% | 2365 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 35,708 psi | 72% | 2277 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 98% | 42,235 psi | 86% | 2461 fps | 98.9% |
| Bofors RP3 | <<locked>> | 84% | 44,440 psi | 90% | 2336 fps | 100% |
| Bofors RP7 | <<locked>> | 86% | 42,380 psi | 86% | 2267 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 82% | 42,409 psi | 86% | 2297 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 88% | 41,916 psi | 85% | 2343 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 43,540 psi | 88% | 2343 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 90% | 44,541 psi | 90% | 2411 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,810 psi | 73% | 1476 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 44,048 psi | 89% | 2290 fps | 99.5% |
| IMR 4350 | <<locked>> | 90% | 42,540 psi | 86% | 2297 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 86% | 43,845 psi | 89% | 2293 fps | 96.7% |
| IMR 4831 | <<locked>> | 92% | 43,120 psi | 87% | 2349 fps | 99.1% |
| Lovex S062 | <<locked>> | 82% | 44,106 psi | 89% | 2290 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 43,410 psi | 88% | 2293 fps | 98% |
| Lovex S070 | <<locked>> | 90% | 44,208 psi | 90% | 2326 fps | 97.2% |
| Norma 203B | <<locked>> | 82% | 44,164 psi | 90% | 2329 fps | 99.8% |
| Norma MRP | <<locked>> | 98% | 42,308 psi | 86% | 2425 fps | 96.4% |
| Norma URP | <<locked>> | 90% | 42,206 psi | 86% | 2346 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 82% | 43,888 psi | 89% | 2346 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 92% | 43,584 psi | 88% | 2379 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,361 psi | 74% | 1512 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 42,786 psi | 87% | 2283 fps | 97.2% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 44,135 psi | 90% | 2425 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 41,742 psi | 85% | 2365 fps | 98.7% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 44,498 psi | 90% | 2431 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 84% | 41,843 psi | 85% | 2290 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 86% | 42,380 psi | 86% | 2267 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 88% | 43,410 psi | 88% | 2293 fps | 98% |
| Shooters World Precision | <<locked>> | 82% | 44,106 psi | 89% | 2290 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 44,208 psi | 90% | 2326 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 42,815 psi | 87% | 2336 fps | 99.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 44,324 psi | 90% | 2218 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,091 psi | 87% | 2251 fps | 96.7% |
| Somchem S355 | <<locked>> | 84% | 42,511 psi | 86% | 2290 fps | 99.8% |
| Somchem S365 | <<locked>> | 94% | 43,076 psi | 87% | 2395 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 42,496 psi | 86% | 2333 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 86% | 43,294 psi | 88% | 2274 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 44,019 psi | 89% | 2339 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 82% | 44,541 psi | 90% | 2283 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 43,308 psi | 88% | 2346 fps | 98.8% |
| Vihtavuori N555 | <<locked>> | 98% | 41,785 psi | 85% | 2385 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 43,787 psi | 89% | 2323 fps | 99.9% |
| Winchester 760 | <<locked>> | 88% | 42,206 psi | 86% | 2346 fps | 96.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,143 psi | 73% | 2385 fps | 99.9% |
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% | 34,664 psi | 70% | 2198 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 40,712 psi | 83% | 2244 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 29,979 psi | 61% | 2106 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 39,624 psi | 80% | 2221 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,204 psi | 80% | 2238 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 30,603 psi | 62% | 2119 fps | 95.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,968 psi | 69% | 2228 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 86% | 26,556 psi | 54% | 2044 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 98% | 33,576 psi | 68% | 2228 fps | 95% |
| Alliant Reloder-26 | 43.3 gr | 90% | 31,995 psi | 65% | 2241 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 39,015 psi | 79% | 2244 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 39,798 psi | 81% | 2221 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 39,726 psi | 81% | 2251 fps | 98% |
| Hodgdon H414 | <<locked>> | 84% | 36,840 psi | 75% | 2244 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,137 psi | 57% | 2034 fps | 96.6% |
| Hodgdon Superformance | <<locked>> | 88% | 41,495 psi | 84% | 2359 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,760 psi | 54% | 1316 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,611 psi | 84% | 2247 fps | 99.3% |
| IMR 4350 | <<locked>> | 88% | 39,972 psi | 81% | 2251 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 82% | 39,001 psi | 79% | 2208 fps | 95.4% |
| IMR 4831 | <<locked>> | 80% | 29,298 psi | 59% | 2073 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 41,394 psi | 84% | 2247 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 34,055 psi | 69% | 2116 fps | 95.4% |
| Lovex S070 | <<locked>> | 84% | 36,608 psi | 74% | 2188 fps | 95% |
| Norma 203B | <<locked>> | 80% | 41,452 psi | 84% | 2283 fps | 99.5% |
| Norma MRP | <<locked>> | 96% | 39,711 psi | 81% | 2372 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 30,400 psi | 62% | 2106 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 41,191 psi | 84% | 2303 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 36,143 psi | 73% | 2241 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,050 psi | 55% | 1348 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,190 psi | 82% | 2238 fps | 96.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 36,158 psi | 73% | 2280 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 31,952 psi | 65% | 2172 fps | 95.9% |
| ReloadSwiss RS 70 | 40.1 gr | 84% | 34,156 psi | 69% | 2224 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 36,666 psi | 74% | 2198 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 84% | 39,798 psi | 81% | 2221 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 34,055 psi | 69% | 2116 fps | 95.4% |
| Shooters World Precision | <<locked>> | 80% | 41,394 psi | 84% | 2247 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 36,608 psi | 74% | 2188 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,652 psi | 76% | 2244 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,146 psi | 79% | 2139 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 37,855 psi | 77% | 2159 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 37,405 psi | 76% | 2201 fps | 99.2% |
| Somchem S365 | 35.6 gr | 80% | 27,296 psi | 55% | 2067 fps | 97.8% |
| Somchem S385 | <<locked>> | 94% | 39,842 psi | 81% | 2287 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 35,592 psi | 72% | 2146 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 31,734 psi | 64% | 2110 fps | 96% |
| Vihtavuori N540 | <<locked>> | 80% | 41,843 psi | 85% | 2244 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 31,270 psi | 63% | 2113 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 86% | 28,471 psi | 58% | 2110 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,386 psi | 64% | 2087 fps | 98% |
| Winchester 760 | <<locked>> | 84% | 36,840 psi | 75% | 2244 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 90% | 26,397 psi | 54% | 2110 fps | 95.9% |
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 53 powders for 7 x 57 R loaded with the .284 | 180gr | Lapua ScenarL. Alliant Reloder-26 delivers the highest muzzle velocity at 2,461 fps; across all powders the maximum-charge window runs from 1,476 fps to 2,461 fps. Accurate 3100 gives the best case fill at 100 %, and 53 of the 53 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 180.0 gr projectile in 0.284" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-25 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 | 180gr | Lapua ScenarL 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.