Load Specifications
Load data in caliber 7 x 57 with .284 | 160gr | Prvi Partizan PSP BT bullet and 86 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 Ramshot Hunter.
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>> | 84% | 48,515 psi | 86% | 2500 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 50,618 psi | 89% | 2539 fps | 96.7% |
| Accurate 3100ᴾ | <<locked>> | 100% | 42,119 psi | 74% | 2500 fps | 96.7% |
| Accurate 4064 | <<locked>> | 86% | 48,820 psi | 86% | 2549 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 47,776 psi | 84% | 2615 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 82% | 48,892 psi | 86% | 2566 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 88% | 49,995 psi | 88% | 2569 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 51,082 psi | 90% | 2569 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 48,008 psi | 85% | 2667 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 50,053 psi | 88% | 2595 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 50,401 psi | 89% | 2612 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 49,545 psi | 88% | 2674 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 92% | 50,314 psi | 89% | 2703 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 40,103 psi | 71% | 2530 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 44,976 psi | 80% | 2684 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 48,356 psi | 85% | 2579 fps | 99.3% |
| Bofors RP3 | <<locked>> | 88% | 50,415 psi | 89% | 2608 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 50,488 psi | 89% | 2579 fps | 97% |
| Hodgdon BL-C2 | <<locked>> | 82% | 50,430 psi | 89% | 2598 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 51,039 psi | 90% | 2615 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 94% | 50,531 psi | 89% | 2661 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 90% | 48,472 psi | 86% | 2582 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 82% | 49,356 psi | 87% | 2575 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 48,950 psi | 87% | 2605 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 48,733 psi | 86% | 2608 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 50,966 psi | 90% | 2694 fps | 97.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,737 psi | 63% | 1608 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 50,546 psi | 89% | 2582 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 49,530 psi | 88% | 2566 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 49,647 psi | 88% | 2556 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 84% | 49,284 psi | 87% | 2530 fps | 97.3% |
| IMR 4350 | <<locked>> | 96% | 50,865 psi | 90% | 2605 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 49,124 psi | 87% | 2556 fps | 97.2% |
| IMR 4831 | <<locked>> | 96% | 48,631 psi | 86% | 2612 fps | 99.4% |
| IMR 4895 | <<locked>> | 84% | 48,457 psi | 86% | 2589 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 82% | 51,082 psi | 90% | 2569 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 48,559 psi | 86% | 2549 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 48,617 psi | 86% | 2500 fps | 99.8% |
| Lovex S062 | <<locked>> | 86% | 49,588 psi | 88% | 2556 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 48,805 psi | 86% | 2556 fps | 98.4% |
| Lovex S070 | <<locked>> | 94% | 49,313 psi | 87% | 2585 fps | 97.6% |
| Norma 201 | <<locked>> | 84% | 50,981 psi | 90% | 2566 fps | 100% |
| Norma 202 | <<locked>> | 82% | 48,443 psi | 86% | 2523 fps | 100% |
| Norma 203B | <<locked>> | 86% | 49,705 psi | 88% | 2598 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 44,773 psi | 79% | 2641 fps | 96.2% |
| Norma URP | <<locked>> | 96% | 50,531 psi | 89% | 2657 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 86% | 49,922 psi | 88% | 2621 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 49,443 psi | 87% | 2654 fps | 98.2% |
| Ramshot TAC | <<locked>> | 82% | 51,169 psi | 90% | 2585 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 82% | 50,807 psi | 90% | 2602 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,201 psi | 64% | 1644 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 48,211 psi | 85% | 2549 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 50,662 psi | 90% | 2667 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 49,850 psi | 88% | 2700 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 50,966 psi | 90% | 2690 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 50,473 psi | 89% | 2713 fps | 99.2% |
| Rottweil R 902 | <<locked>> | 84% | 48,428 psi | 86% | 2520 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 50,270 psi | 89% | 2598 fps | 100% |
| Rottweil R 907 | <<locked>> | 92% | 50,488 psi | 89% | 2579 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 92% | 48,805 psi | 86% | 2556 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 48,559 psi | 86% | 2549 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 49,588 psi | 88% | 2556 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 49,313 psi | 87% | 2585 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 48,472 psi | 86% | 2605 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 49,676 psi | 88% | 2566 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 50,676 psi | 90% | 2592 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 49,168 psi | 87% | 2464 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 49,385 psi | 87% | 2467 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 48,747 psi | 86% | 2510 fps | 97.2% |
| Somchem S335 | <<locked>> | 82% | 48,979 psi | 87% | 2467 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 49,255 psi | 87% | 2556 fps | 99.8% |
| Somchem S355 | <<locked>> | 90% | 50,691 psi | 90% | 2598 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 48,414 psi | 86% | 2661 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 48,124 psi | 85% | 2598 fps | 96.5% |
| Vihtavuori N133 | <<locked>> | 82% | 49,530 psi | 88% | 2454 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 48,312 psi | 85% | 2493 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 48,921 psi | 86% | 2507 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 48,718 psi | 86% | 2533 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 49,472 psi | 87% | 2605 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 86% | 50,082 psi | 89% | 2546 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 48,617 psi | 86% | 2608 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 44,135 psi | 78% | 2598 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 49,705 psi | 88% | 2589 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 50,850 psi | 90% | 2667 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 35,969 psi | 64% | 2539 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 84% | 50,386 psi | 89% | 2598 fps | 100% |
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% | 42,699 psi | 75% | 2415 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 44,599 psi | 79% | 2441 fps | 95.3% |
| Accurate 3100 | <<locked>> | 96% | 36,651 psi | 65% | 2395 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 40,393 psi | 71% | 2415 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 31,676 psi | 56% | 2300 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 46,151 psi | 82% | 2520 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 39,160 psi | 69% | 2379 fps | 98.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,225 psi | 85% | 2526 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 41,829 psi | 74% | 2552 fps | 98.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 38,870 psi | 69% | 2402 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 41,829 psi | 74% | 2464 fps | 98.8% |
| Alliant Reloder-16 | 39.3 gr | 82% | 32,213 psi | 57% | 2313 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 33,591 psi | 59% | 2379 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 90% | 29,588 psi | 52% | 2277 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 92% | 33,895 psi | 60% | 2441 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 45,107 psi | 80% | 2523 fps | 98.9% |
| Bofors RP3 | <<locked>> | 80% | 38,638 psi | 68% | 2408 fps | 99.3% |
| Bofors RP7 | <<locked>> | 88% | 44,715 psi | 79% | 2480 fps | 95.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,007 psi | 83% | 2546 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,349 psi | 70% | 2411 fps | 97.2% |
| Hodgdon H414 | <<locked>> | 88% | 41,553 psi | 73% | 2503 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 88% | 45,484 psi | 80% | 2530 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 46,572 psi | 82% | 2530 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 27,775 psi | 49% | 2172 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,453 psi | 75% | 2503 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 90% | 44,193 psi | 78% | 2575 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,687 psi | 47% | 1434 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,469 psi | 79% | 2480 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 46,238 psi | 82% | 2516 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,089 psi | 73% | 2408 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 43,410 psi | 77% | 2428 fps | 95.9% |
| IMR 4350 | <<locked>> | 92% | 44,802 psi | 79% | 2507 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 40,959 psi | 72% | 2411 fps | 95.1% |
| IMR 4831 | <<locked>> | 84% | 32,880 psi | 58% | 2310 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 42,844 psi | 76% | 2490 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 80% | 48,225 psi | 85% | 2526 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 45,208 psi | 80% | 2497 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 45,948 psi | 81% | 2457 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 41,133 psi | 73% | 2415 fps | 99.7% |
| Lovex S065 | <<locked>> | 82% | 36,042 psi | 64% | 2316 fps | 95.2% |
| Lovex S070 | <<locked>> | 88% | 41,017 psi | 73% | 2438 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 45,092 psi | 80% | 2470 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 45,397 psi | 80% | 2477 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,191 psi | 73% | 2451 fps | 99% |
| Norma MRP | <<locked>> | 98% | 41,930 psi | 74% | 2582 fps | 95.2% |
| Norma URP | <<locked>> | 82% | 32,140 psi | 57% | 2303 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 40,582 psi | 72% | 2464 fps | 98.8% |
| Ramshot Hunter | 44.7 gr | 88% | 38,072 psi | 67% | 2441 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 47,848 psi | 85% | 2533 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 47,427 psi | 84% | 2549 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,919 psi | 48% | 1467 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 39,595 psi | 70% | 2392 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 43,932 psi | 78% | 2556 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 35,766 psi | 63% | 2441 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 33,721 psi | 60% | 2369 fps | 95.6% |
| ReloadSwiss RS 70 | 45.1 gr | 86% | 36,158 psi | 64% | 2428 fps | 95.6% |
| Rottweil R 902 | <<locked>> | 80% | 42,844 psi | 76% | 2428 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 36,289 psi | 64% | 2352 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 88% | 44,715 psi | 79% | 2480 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 36,042 psi | 64% | 2316 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 45,208 psi | 80% | 2497 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,133 psi | 73% | 2415 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 41,017 psi | 73% | 2438 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,144 psi | 66% | 2398 fps | 98.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 46,267 psi | 82% | 2510 fps | 98.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 44,367 psi | 78% | 2487 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,340 psi | 82% | 2421 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 38,667 psi | 68% | 2300 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 40,030 psi | 71% | 2359 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 46,021 psi | 81% | 2425 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,934 psi | 81% | 2503 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 37,130 psi | 66% | 2359 fps | 98.6% |
| Somchem S365 | <<locked>> | 80% | 26,948 psi | 48% | 2205 fps | 96.6% |
| Somchem S385 | <<locked>> | 98% | 45,092 psi | 80% | 2546 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 46,717 psi | 83% | 2415 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 42,496 psi | 75% | 2408 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 42,975 psi | 76% | 2415 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,230 psi | 62% | 2300 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 82% | 33,489 psi | 59% | 2303 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 41,408 psi | 73% | 2408 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 32,967 psi | 58% | 2306 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 88% | 29,805 psi | 53% | 2297 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,125 psi | 55% | 2231 fps | 97% |
| Winchester 760 | <<locked>> | 88% | 41,829 psi | 74% | 2510 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 92% | 27,804 psi | 49% | 2293 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 44,034 psi | 78% | 2497 fps | 99.7% |
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 86 powders for 7 x 57 loaded with the .284 | 160gr | Prvi Partizan PSP BT. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,713 fps; across all powders the maximum-charge window runs from 1,608 fps to 2,713 fps. Accurate 3100 gives the best case fill at 100 %, and 86 of the 86 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 63–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.5 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. Alliant Reloder-16, ReloadSwiss RS 70, Ramshot Hunter rank at the top here: for 7 x 57 with the .284 | 160gr | Prvi Partizan PSP BT 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.