Load Specifications
Load data in caliber 7 x 57 R with .284 | 165gr | Norma Bondstrike bullet and 52 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.
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Max Load - Barrel Length: 23.62"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 43,787 psi | 89% | 2369 fps | 100% |
| Accurate 3100ᴾ | <<locked>> | 100% | 39,711 psi | 81% | 2398 fps | 96% |
| Accurate 4064 | <<locked>> | 84% | 44,005 psi | 89% | 2411 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 42,656 psi | 87% | 2464 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 84% | 42,815 psi | 87% | 2385 fps | 98.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 43,018 psi | 87% | 2510 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 42,496 psi | 86% | 2405 fps | 99.6% |
| Alliant Reloder-15 | <<locked>> | 82% | 42,815 psi | 87% | 2418 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 94% | 44,483 psi | 90% | 2516 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 88% | 41,930 psi | 85% | 2497 fps | 99.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,276 psi | 78% | 2428 fps | 98.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,699 psi | 87% | 2575 fps | 98.2% |
| Bofors RP3 | <<locked>> | 84% | 42,163 psi | 86% | 2411 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 84% | 42,989 psi | 87% | 2415 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 44,063 psi | 89% | 2464 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 43,381 psi | 88% | 2457 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,375 psi | 72% | 1545 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 42,264 psi | 86% | 2369 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,599 psi | 90% | 2411 fps | 96% |
| IMR 4831 | <<locked>> | 94% | 43,526 psi | 88% | 2464 fps | 98.6% |
| IMR 4895 | <<locked>> | 82% | 43,874 psi | 89% | 2444 fps | 99.4% |
| Lovex S062 | <<locked>> | 82% | 42,206 psi | 86% | 2372 fps | 99.8% |
| Lovex S065 | <<locked>> | 90% | 43,961 psi | 89% | 2411 fps | 97.4% |
| Lovex S070 | <<locked>> | 92% | 44,599 psi | 90% | 2438 fps | 96.4% |
| Norma 203B | <<locked>> | 82% | 42,134 psi | 85% | 2408 fps | 99.2% |
| Norma URP | <<locked>> | 92% | 42,438 psi | 86% | 2457 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 84% | 44,570 psi | 90% | 2470 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 94% | 44,251 psi | 90% | 2500 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,868 psi | 73% | 1581 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 43,352 psi | 88% | 2398 fps | 96.5% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 41,698 psi | 85% | 2497 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 42,163 psi | 86% | 2484 fps | 98.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,192 psi | 86% | 2493 fps | 97.5% |
| Rottweil R 902 | <<locked>> | 82% | 43,976 psi | 89% | 2382 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 86% | 42,351 psi | 86% | 2408 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 43,961 psi | 89% | 2411 fps | 97.4% |
| Shooters World Precision | <<locked>> | 82% | 42,206 psi | 86% | 2372 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 92% | 44,599 psi | 90% | 2438 fps | 96.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 43,482 psi | 88% | 2457 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 42,235 psi | 86% | 2300 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 43,613 psi | 88% | 2362 fps | 95.9% |
| Somchem S355 | <<locked>> | 86% | 43,149 psi | 88% | 2411 fps | 99.5% |
| Somchem S365 | <<locked>> | 96% | 43,337 psi | 88% | 2513 fps | 100% |
| Vihtavuori N135 | <<locked>> | 82% | 43,453 psi | 88% | 2359 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 44,237 psi | 90% | 2372 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 43,830 psi | 89% | 2395 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 44,585 psi | 90% | 2461 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 82% | 42,525 psi | 86% | 2365 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 43,714 psi | 89% | 2464 fps | 98.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,698 psi | 85% | 2497 fps | 98.8% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 44,541 psi | 90% | 2441 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,200 psi | 69% | 2428 fps | 98.7% |
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% | 41,017 psi | 83% | 2326 fps | 100% |
| Accurate 3100 | <<locked>> | 98% | 37,144 psi | 75% | 2349 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 38,798 psi | 79% | 2323 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 32,329 psi | 66% | 2260 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 37,797 psi | 77% | 2290 fps | 97.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 40,118 psi | 81% | 2451 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,478 psi | 76% | 2313 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,219 psi | 82% | 2369 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 84% | 32,909 psi | 67% | 2270 fps | 95.6% |
| Alliant Reloder-17 | 38.5 gr | 80% | 32,300 psi | 66% | 2287 fps | 97.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 28,253 psi | 57% | 2182 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 94% | 34,621 psi | 70% | 2398 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 37,043 psi | 75% | 2316 fps | 99% |
| Hodgdon H380 | <<locked>> | 80% | 37,927 psi | 77% | 2320 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 28,224 psi | 57% | 2129 fps | 95.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,712 psi | 83% | 2411 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,585 psi | 54% | 1385 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,697 psi | 81% | 2320 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 86% | 41,989 psi | 85% | 2365 fps | 95.2% |
| IMR 4831 | <<locked>> | 84% | 31,372 psi | 64% | 2221 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 41,176 psi | 84% | 2395 fps | 99% |
| Lovex S062 | <<locked>> | 80% | 39,682 psi | 80% | 2326 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 36,840 psi | 75% | 2274 fps | 95.4% |
| Lovex S070 | <<locked>> | 90% | 41,916 psi | 85% | 2392 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 39,566 psi | 80% | 2359 fps | 98.7% |
| Norma URP | <<locked>> | 84% | 32,895 psi | 67% | 2264 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 80% | 38,783 psi | 79% | 2365 fps | 98.4% |
| Ramshot Hunter | <<locked>> | 90% | 38,928 psi | 79% | 2398 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,818 psi | 54% | 1414 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 40,828 psi | 83% | 2352 fps | 95.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 34,360 psi | 70% | 2346 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 34,360 psi | 70% | 2326 fps | 95.8% |
| ReloadSwiss RS 70 | 43 gr | 88% | 37,057 psi | 75% | 2385 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 41,292 psi | 84% | 2336 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 80% | 34,896 psi | 71% | 2267 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 84% | 36,840 psi | 75% | 2274 fps | 95.4% |
| Shooters World Precision | <<locked>> | 80% | 39,682 psi | 80% | 2326 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 90% | 41,916 psi | 85% | 2392 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,781 psi | 73% | 2313 fps | 97.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,420 psi | 76% | 2218 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 40,944 psi | 83% | 2316 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 35,737 psi | 72% | 2274 fps | 98.3% |
| Somchem S365 | 36.5 gr | 80% | 25,947 psi | 53% | 2119 fps | 96% |
| Vihtavuori N135 | <<locked>> | 80% | 40,973 psi | 83% | 2320 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,539 psi | 84% | 2329 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,997 psi | 69% | 2215 fps | 98.9% |
| Vihtavuori N160 | <<locked>> | 82% | 32,184 psi | 65% | 2215 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 40,001 psi | 81% | 2323 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 33,634 psi | 68% | 2264 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 90% | 30,182 psi | 61% | 2251 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,921 psi | 61% | 2146 fps | 96.4% |
| Winchester StaBALL HD | <<locked>> | 94% | 28,355 psi | 57% | 2254 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 52 powders for 7 x 57 R loaded with the .284 | 165gr | Norma Bondstrike. Alliant Reloder-26 delivers the highest muzzle velocity at 2,575 fps; across all powders the maximum-charge window runs from 1,545 fps to 2,575 fps. Accurate 3100 gives the best case fill at 100 %, and 52 of the 52 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 69–90 %, 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. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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 | Norma Bondstrike 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.