Load Specifications
Load data in caliber 7 x 57 with .285 | 173gr | Prvi Partizan FMJ BT bullet and 79 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 and Alliant Reloder-26.
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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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% | 48,747 psi | 86% | 2402 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 50,502 psi | 89% | 2451 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,992 psi | 81% | 2477 fps | 98.4% |
| Accurate 4064 | <<locked>> | 84% | 49,168 psi | 87% | 2451 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 48,399 psi | 86% | 2526 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 86% | 49,835 psi | 88% | 2474 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 50,009 psi | 88% | 2559 fps | 96.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 47,950 psi | 85% | 2572 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 50,183 psi | 89% | 2497 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 50,488 psi | 89% | 2513 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 49,792 psi | 88% | 2582 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 50,430 psi | 89% | 2608 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 49,197 psi | 87% | 2552 fps | 96.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 45,963 psi | 81% | 2546 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,366 psi | 77% | 2497 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,130 psi | 67% | 2415 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,994 psi | 87% | 2664 fps | 99.8% |
| Bofors RP3 | <<locked>> | 86% | 50,372 psi | 89% | 2507 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 45,963 psi | 81% | 2546 fps | 96.1% |
| Bofors RP7 | <<locked>> | 90% | 50,430 psi | 89% | 2487 fps | 97.9% |
| Hodgdon H380 | <<locked>> | 86% | 51,169 psi | 90% | 2520 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 51,024 psi | 90% | 2575 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 88% | 48,327 psi | 85% | 2487 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 49,472 psi | 87% | 2513 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 48,718 psi | 86% | 2510 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 50,676 psi | 90% | 2602 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,984 psi | 64% | 1549 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 50,430 psi | 89% | 2480 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 49,530 psi | 88% | 2461 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 82% | 48,965 psi | 87% | 2438 fps | 98.1% |
| IMR 4350 | <<locked>> | 94% | 50,676 psi | 90% | 2513 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 49,008 psi | 87% | 2467 fps | 98% |
| IMR 4831 | <<locked>> | 94% | 49,153 psi | 87% | 2523 fps | 99.8% |
| IMR 4895 | <<locked>> | 82% | 48,573 psi | 86% | 2490 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 49,588 psi | 88% | 2457 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 48,921 psi | 86% | 2467 fps | 99% |
| Lovex S070 | <<locked>> | 92% | 49,501 psi | 88% | 2497 fps | 98.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 38,159 psi | 67% | 2343 fps | 96.7% |
| Norma 201 | <<locked>> | 82% | 50,821 psi | 90% | 2464 fps | 100% |
| Norma 203B | <<locked>> | 84% | 49,792 psi | 88% | 2503 fps | 100% |
| Norma 204 | <<locked>> | 94% | 51,024 psi | 90% | 2556 fps | 96.8% |
| Norma MRPᴾ | <<locked>> | 100% | 48,428 psi | 86% | 2618 fps | 98.1% |
| Norma URP | <<locked>> | 94% | 51,024 psi | 90% | 2566 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 49,966 psi | 88% | 2523 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 49,617 psi | 88% | 2562 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,506 psi | 65% | 1585 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 47,935 psi | 85% | 2454 fps | 98.4% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 50,662 psi | 90% | 2569 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 50,299 psi | 89% | 2605 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 48,138 psi | 85% | 2549 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 50,546 psi | 89% | 2621 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 82% | 48,298 psi | 85% | 2421 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 50,575 psi | 89% | 2503 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 47,935 psi | 85% | 2533 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 90% | 50,430 psi | 89% | 2487 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 90% | 48,921 psi | 86% | 2467 fps | 99% |
| Shooters World Precision | <<locked>> | 84% | 49,588 psi | 88% | 2457 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 49,501 psi | 88% | 2497 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 48,486 psi | 86% | 2507 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 50,343 psi | 89% | 2490 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 49,487 psi | 87% | 2372 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 48,370 psi | 86% | 2418 fps | 98% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,807 psi | 90% | 2582 fps | 97.2% |
| Somchem S355 | <<locked>> | 88% | 50,778 psi | 90% | 2500 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 49,211 psi | 87% | 2569 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 48,718 psi | 86% | 2516 fps | 97.6% |
| Vihtavuori N135 | <<locked>> | 82% | 48,341 psi | 85% | 2392 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 48,863 psi | 86% | 2408 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 48,820 psi | 86% | 2438 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 49,879 psi | 88% | 2513 fps | 99.7% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 44,904 psi | 79% | 2444 fps | 96.2% |
| Vihtavuori N540 | <<locked>> | 84% | 50,125 psi | 89% | 2448 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 49,037 psi | 87% | 2520 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,211 psi | 85% | 2569 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 49,617 psi | 88% | 2493 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 51,024 psi | 90% | 2575 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,957 psi | 69% | 2530 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 50,212 psi | 89% | 2497 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 48,733 psi | 86% | 2507 fps | 96.4% |
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% | 45,614 psi | 81% | 2359 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 44,251 psi | 78% | 2349 fps | 96.3% |
| Accurate 3100 | <<locked>> | 92% | 34,896 psi | 62% | 2277 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 43,134 psi | 76% | 2362 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,140 psi | 57% | 2224 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 80% | 41,408 psi | 73% | 2336 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 94% | 43,903 psi | 78% | 2454 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,889 psi | 79% | 2520 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,626 psi | 74% | 2362 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,425 psi | 79% | 2418 fps | 99.6% |
| Alliant Reloder-16 | 38.4 gr | 80% | 32,271 psi | 57% | 2238 fps | 96.6% |
| Alliant Reloder-17 | <<locked>> | 80% | 35,882 psi | 63% | 2349 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 43,352 psi | 77% | 2451 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 98% | 43,076 psi | 76% | 2490 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 84% | 26,527 psi | 47% | 2113 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 96% | 33,634 psi | 59% | 2310 fps | 95.3% |
| Alliant Reloder-26 | 46.6 gr | 88% | 32,082 psi | 57% | 2316 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 41,321 psi | 73% | 2365 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 43,076 psi | 76% | 2490 fps | 95.3% |
| Bofors RP7 | <<locked>> | 82% | 39,320 psi | 70% | 2293 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 42,134 psi | 74% | 2375 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 82% | 36,564 psi | 65% | 2316 fps | 95% |
| Hodgdon H4350 | <<locked>> | 84% | 42,525 psi | 75% | 2388 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,660 psi | 52% | 2146 fps | 97.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,672 psi | 81% | 2461 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 38,435 psi | 68% | 2382 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,905 psi | 48% | 1381 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,297 psi | 84% | 2434 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,482 psi | 77% | 2362 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,006 psi | 81% | 2388 fps | 97.5% |
| IMR 4350 | <<locked>> | 86% | 39,610 psi | 70% | 2323 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 38,363 psi | 68% | 2274 fps | 95.3% |
| IMR 4831 | <<locked>> | 80% | 31,111 psi | 55% | 2185 fps | 96.1% |
| IMR 4895 | <<locked>> | 80% | 45,513 psi | 80% | 2444 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 43,598 psi | 77% | 2365 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 35,882 psi | 63% | 2231 fps | 96.2% |
| Lovex S070 | <<locked>> | 82% | 36,506 psi | 65% | 2264 fps | 95.2% |
| Lovex S071 | <<locked>> | 96% | 33,518 psi | 59% | 2247 fps | 95% |
| Norma 201 | <<locked>> | 80% | 47,659 psi | 84% | 2418 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,772 psi | 77% | 2405 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 44,773 psi | 79% | 2454 fps | 95.3% |
| Norma MRP | <<locked>> | 94% | 39,581 psi | 70% | 2454 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 32,460 psi | 57% | 2228 fps | 96.4% |
| Ramshot Big Game | <<locked>> | 80% | 43,671 psi | 77% | 2425 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 35,824 psi | 63% | 2310 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 48% | 1414 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,293 psi | 75% | 2356 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,398 psi | 84% | 2520 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,174 psi | 67% | 2402 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 31,836 psi | 56% | 2241 fps | 96% |
| ReloadSwiss RS 70 | 43 gr | 82% | 33,750 psi | 60% | 2293 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 45,585 psi | 81% | 2379 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,073 psi | 69% | 2320 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 94% | 41,945 psi | 74% | 2428 fps | 95% |
| Rottweil R 907 | <<locked>> | 82% | 39,320 psi | 70% | 2293 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,882 psi | 63% | 2231 fps | 96.2% |
| Shooters World Precision | <<locked>> | 80% | 43,598 psi | 77% | 2365 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 36,506 psi | 65% | 2264 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,943 psi | 71% | 2365 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,253 psi | 84% | 2444 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,133 psi | 73% | 2251 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 37,565 psi | 66% | 2231 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 44,425 psi | 79% | 2477 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 39,494 psi | 70% | 2316 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 29,109 psi | 51% | 2185 fps | 98.5% |
| Somchem S385 | <<locked>> | 92% | 40,089 psi | 71% | 2369 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 45,513 psi | 80% | 2352 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,818 psi | 81% | 2362 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,782 psi | 67% | 2260 fps | 99.9% |
| Vihtavuori N160 | <<locked>> | 80% | 33,765 psi | 60% | 2228 fps | 96.8% |
| Vihtavuori N165 | <<locked>> | 98% | 42,076 psi | 74% | 2395 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 44,164 psi | 78% | 2359 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,330 psi | 59% | 2231 fps | 96.4% |
| Vihtavuori N555 | <<locked>> | 84% | 28,631 psi | 51% | 2182 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,228 psi | 59% | 2205 fps | 98.6% |
| Winchester 760 | <<locked>> | 82% | 36,811 psi | 65% | 2323 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 88% | 26,484 psi | 47% | 2188 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 46,804 psi | 83% | 2448 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 45,585 psi | 81% | 2457 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 94 powders for 7 x 57 loaded with the .285 | 173gr | Prvi Partizan FMJ BT. Alliant Reloder-26 delivers the highest muzzle velocity at 2,664 fps; across all powders the maximum-charge window runs from 1,549 fps to 2,664 fps. Accurate 3100 gives the best case fill at 100 %, and 94 of the 94 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 64–90 %, leaving at least 10 % headroom. The 173.0 gr projectile in 0.285" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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-16, ReloadSwiss RS 70, Alliant Reloder-26 rank at the top here: for 7 x 57 with the .285 | 173gr | Prvi Partizan FMJ BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 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.