Load Specifications
Load data in caliber 7 x 57 R with .284 | 165gr | Sierra Tipped GameKing bullet and 54 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Somchem S365, ReloadSwiss RS 70 and Alliant Reloder-17.
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>> | 82% | 42,888 psi | 87% | 2352 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 43,134 psi | 87% | 2395 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 41,582 psi | 84% | 2441 fps | 98.1% |
| ADI AR 2208 | <<locked>> | 84% | 42,076 psi | 85% | 2365 fps | 98.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 42,293 psi | 86% | 2490 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 44,454 psi | 90% | 2434 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 82% | 42,032 psi | 85% | 2398 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 94% | 43,859 psi | 89% | 2500 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 90% | 43,990 psi | 89% | 2526 fps | 99.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,768 psi | 77% | 2411 fps | 98.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,626 psi | 84% | 2546 fps | 97.8% |
| Bofors RP3 | <<locked>> | 86% | 44,483 psi | 90% | 2448 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 84% | 42,598 psi | 86% | 2402 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 92% | 44,483 psi | 90% | 2490 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 43,105 psi | 87% | 2441 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 42,931 psi | 87% | 2444 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,375 psi | 72% | 1539 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 44,251 psi | 90% | 2398 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,324 psi | 90% | 2372 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,208 psi | 90% | 2398 fps | 95.8% |
| IMR 4831 | <<locked>> | 94% | 42,844 psi | 87% | 2448 fps | 98.4% |
| IMR 4895 | <<locked>> | 82% | 43,062 psi | 87% | 2425 fps | 99.3% |
| Lovex S062 | <<locked>> | 84% | 44,150 psi | 90% | 2398 fps | 99.9% |
| Lovex S065 | <<locked>> | 90% | 43,613 psi | 88% | 2398 fps | 97.2% |
| Lovex S070 | <<locked>> | 92% | 43,918 psi | 89% | 2421 fps | 96.1% |
| Norma 203B | <<locked>> | 84% | 44,077 psi | 89% | 2434 fps | 99.4% |
| Norma URP | <<locked>> | 94% | 44,498 psi | 90% | 2490 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 84% | 43,845 psi | 89% | 2454 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 94% | 43,381 psi | 88% | 2477 fps | 96.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,868 psi | 73% | 1578 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,018 psi | 87% | 2388 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 44,237 psi | 90% | 2493 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 44,048 psi | 89% | 2533 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 44,338 psi | 90% | 2516 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 44,382 psi | 90% | 2530 fps | 97.9% |
| Rottweil R 902 | <<locked>> | 82% | 43,468 psi | 88% | 2369 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 88% | 44,338 psi | 90% | 2438 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 43,613 psi | 88% | 2398 fps | 97.2% |
| Shooters World Precision | <<locked>> | 84% | 44,150 psi | 90% | 2398 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 92% | 43,918 psi | 89% | 2421 fps | 96.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 42,757 psi | 87% | 2441 fps | 99.1% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 44,251 psi | 90% | 2326 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 42,409 psi | 86% | 2395 fps | 99.4% |
| Somchem S365 | <<locked>> | 96% | 42,351 psi | 86% | 2493 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 42,859 psi | 87% | 2346 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 43,482 psi | 88% | 2356 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 43,134 psi | 87% | 2379 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 92% | 43,555 psi | 88% | 2438 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 82% | 41,814 psi | 85% | 2349 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 43,076 psi | 87% | 2448 fps | 98.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,017 psi | 83% | 2480 fps | 98.6% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 43,758 psi | 89% | 2421 fps | 99.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,591 psi | 68% | 2405 fps | 98.4% |
| Winchester StaBALL Match | <<locked>> | 82% | 44,396 psi | 90% | 2434 fps | 99.6% |
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% | 40,147 psi | 81% | 2310 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 37,942 psi | 77% | 2306 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 31,618 psi | 64% | 2241 fps | 95.1% |
| ADI AR 2208 | <<locked>> | 80% | 37,362 psi | 76% | 2277 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 39,697 psi | 81% | 2438 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,709 psi | 74% | 2293 fps | 98.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,436 psi | 80% | 2349 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 84% | 32,358 psi | 66% | 2251 fps | 95.2% |
| Alliant Reloder-17 | 37.9 gr | 80% | 31,734 psi | 64% | 2267 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 29,544 psi | 60% | 2215 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,390 psi | 74% | 2434 fps | 96% |
| Bofors RP3 | <<locked>> | 80% | 36,303 psi | 74% | 2297 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 80% | 37,202 psi | 75% | 2300 fps | 96.4% |
| Hodgdon H414 | <<locked>> | 90% | 41,756 psi | 85% | 2438 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 27,847 psi | 56% | 2116 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,958 psi | 81% | 2392 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,469 psi | 54% | 1375 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,204 psi | 80% | 2306 fps | 98.2% |
| IMR 4166 Enduron | <<locked>> | 80% | 41,669 psi | 85% | 2323 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 41,626 psi | 84% | 2352 fps | 95% |
| IMR 4831 | <<locked>> | 86% | 33,011 psi | 67% | 2254 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 40,408 psi | 82% | 2379 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 38,914 psi | 79% | 2306 fps | 99.4% |
| Lovex S065 | <<locked>> | 84% | 36,230 psi | 73% | 2254 fps | 95% |
| Lovex S070 | <<locked>> | 90% | 41,307 psi | 84% | 2375 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 38,827 psi | 79% | 2339 fps | 98.5% |
| Norma URP | <<locked>> | 84% | 32,256 psi | 65% | 2244 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 38,377 psi | 78% | 2356 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 38,334 psi | 78% | 2379 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,701 psi | 54% | 1407 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,161 psi | 81% | 2333 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,350 psi | 84% | 2444 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 33,750 psi | 68% | 2326 fps | 99.5% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 33,750 psi | 68% | 2306 fps | 95.4% |
| ReloadSwiss RS 70 | 42.3 gr | 88% | 36,332 psi | 74% | 2362 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 40,814 psi | 83% | 2323 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 34,156 psi | 69% | 2247 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 84% | 36,230 psi | 73% | 2254 fps | 95% |
| Shooters World Precision | <<locked>> | 80% | 38,914 psi | 79% | 2306 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 90% | 41,307 psi | 84% | 2375 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,114 psi | 71% | 2293 fps | 97.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,941 psi | 75% | 2205 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 35,027 psi | 71% | 2254 fps | 98% |
| Somchem S365 | 35.9 gr | 80% | 25,411 psi | 52% | 2100 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 40,393 psi | 82% | 2306 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,756 psi | 83% | 2313 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,272 psi | 67% | 2195 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 84% | 33,678 psi | 68% | 2244 fps | 95.6% |
| Vihtavuori N540 | <<locked>> | 80% | 39,276 psi | 80% | 2306 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 33,257 psi | 67% | 2251 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 92% | 31,589 psi | 64% | 2283 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,660 psi | 60% | 2133 fps | 96.2% |
| Winchester StaBALL HD | <<locked>> | 96% | 29,733 psi | 60% | 2293 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,669 psi | 85% | 2385 fps | 99.4% |
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 54 powders for 7 x 57 R loaded with the .284 | 165gr | Sierra Tipped GameKing. Alliant Reloder-26 delivers the highest muzzle velocity at 2,546 fps; across all powders the maximum-charge window runs from 1,539 fps to 2,546 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 54 of the 54 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 68–90 %, leaving at least 10 % headroom. The 165.0 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. Somchem S365, ReloadSwiss RS 70, Alliant Reloder-17 rank at the top here: for 7 x 57 R with the .284 | 165gr | Sierra Tipped GameKing 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.