Load Specifications
Load data in caliber 7 x 57 R with .284 | 145gr | Peregrine Glider GRM bullet and 65 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Alliant Reloder-16.
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>> | 86% | 41,785 psi | 85% | 2513 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 43,714 psi | 89% | 2566 fps | 99.9% |
| Accurate 4064 | <<locked>> | 88% | 42,047 psi | 85% | 2552 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 43,555 psi | 88% | 2641 fps | 97.2% |
| ADI AR 2206H | <<locked>> | 84% | 43,874 psi | 89% | 2575 fps | 98.3% |
| ADI AR 2208 | <<locked>> | 88% | 42,424 psi | 86% | 2530 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 43,352 psi | 88% | 2536 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 82% | 42,699 psi | 87% | 2533 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 42,830 psi | 87% | 2654 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 44,208 psi | 90% | 2598 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 86% | 41,858 psi | 85% | 2556 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 98% | 43,729 psi | 89% | 2651 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 94% | 44,193 psi | 90% | 2690 fps | 98.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 43,033 psi | 87% | 2575 fps | 97.2% |
| Bofors RP3 | <<locked>> | 90% | 43,787 psi | 89% | 2602 fps | 99.1% |
| Hodgdon BL-C2 | <<locked>> | 84% | 44,556 psi | 90% | 2605 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 88% | 42,235 psi | 86% | 2556 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 84% | 44,208 psi | 90% | 2585 fps | 98.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 42,612 psi | 86% | 2592 fps | 98.5% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 42,801 psi | 87% | 2608 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,650 psi | 70% | 1637 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 42,728 psi | 87% | 2543 fps | 98.5% |
| IMR 3031 | <<locked>> | 84% | 43,294 psi | 88% | 2585 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 44,570 psi | 90% | 2562 fps | 98.1% |
| IMR 4831 | <<locked>> | 98% | 41,843 psi | 85% | 2592 fps | 96.9% |
| IMR 4895 | <<locked>> | 86% | 42,873 psi | 87% | 2589 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 82% | 43,352 psi | 88% | 2536 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 84% | 42,453 psi | 86% | 2556 fps | 99.8% |
| Lovex S060 | <<locked>> | 84% | 44,556 psi | 90% | 2520 fps | 98.4% |
| Lovex S062 | <<locked>> | 88% | 44,063 psi | 89% | 2562 fps | 99.3% |
| Norma 201 | <<locked>> | 84% | 42,859 psi | 87% | 2530 fps | 99.1% |
| Norma 202 | <<locked>> | 84% | 43,120 psi | 87% | 2543 fps | 100% |
| Norma 203B | <<locked>> | 88% | 43,888 psi | 89% | 2598 fps | 98.4% |
| Norma URP | <<locked>> | 98% | 43,859 psi | 89% | 2641 fps | 97.1% |
| Ramshot Big Game | <<locked>> | 88% | 43,729 psi | 89% | 2615 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 82% | 42,627 psi | 86% | 2559 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,925 psi | 71% | 1677 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 43,947 psi | 89% | 2661 fps | 97.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 44,005 psi | 89% | 2697 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 43,453 psi | 88% | 2661 fps | 96.8% |
| Rottweil R 901 | <<locked>> | 82% | 44,077 psi | 89% | 2530 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 43,178 psi | 88% | 2526 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 92% | 43,671 psi | 89% | 2592 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 84% | 42,453 psi | 86% | 2556 fps | 99.8% |
| Shooters World Precision | <<locked>> | 88% | 44,063 psi | 89% | 2562 fps | 99.3% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 42,627 psi | 86% | 2598 fps | 98% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 44,208 psi | 90% | 2562 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 42,540 psi | 86% | 2546 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 42,105 psi | 85% | 2448 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 44,454 psi | 90% | 2493 fps | 100% |
| Somchem S335 | <<locked>> | 84% | 44,121 psi | 89% | 2493 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 43,903 psi | 89% | 2559 fps | 98.2% |
| Somchem S355 | <<locked>> | 90% | 42,047 psi | 85% | 2552 fps | 98.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 41,423 psi | 84% | 2638 fps | 99.4% |
| Vihtavuori N133 | <<locked>> | 82% | 42,293 psi | 86% | 2448 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 42,409 psi | 86% | 2513 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 43,569 psi | 88% | 2526 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 42,844 psi | 87% | 2536 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 96% | 43,352 psi | 88% | 2592 fps | 96.9% |
| Vihtavuori N530 | <<locked>> | 82% | 43,337 psi | 88% | 2533 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 86% | 41,974 psi | 85% | 2516 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 96% | 42,279 psi | 86% | 2589 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 44,150 psi | 90% | 2579 fps | 98.9% |
| Winchester 748 | <<locked>> | 82% | 42,641 psi | 86% | 2579 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 84% | 41,727 psi | 85% | 2549 fps | 98.4% |
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% | 33,982 psi | 69% | 2369 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 40,930 psi | 83% | 2516 fps | 99.7% |
| Accurate 4064 | <<locked>> | 80% | 32,184 psi | 65% | 2356 fps | 99% |
| Accurate 4350 | <<locked>> | 94% | 37,811 psi | 77% | 2530 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 38,595 psi | 78% | 2470 fps | 97.1% |
| ADI AR 2208 | <<locked>> | 82% | 34,983 psi | 71% | 2375 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,683 psi | 83% | 2487 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 39,798 psi | 81% | 2487 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 37,144 psi | 75% | 2530 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 31,850 psi | 65% | 2343 fps | 96% |
| Alliant Reloder-15 | <<locked>> | 80% | 34,461 psi | 70% | 2402 fps | 95.2% |
| Alliant Reloder-16 | 41.6 gr | 94% | 38,841 psi | 79% | 2549 fps | 95.8% |
| Alliant Reloder-17 | 40.9 gr | 86% | 33,547 psi | 68% | 2454 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 37,652 psi | 76% | 2470 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 31,009 psi | 63% | 2336 fps | 95.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 38,856 psi | 79% | 2500 fps | 98.8% |
| Hodgdon H380 | <<locked>> | 86% | 39,581 psi | 80% | 2503 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 38,870 psi | 79% | 2484 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 33,069 psi | 67% | 2388 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 34,766 psi | 71% | 2444 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,556 psi | 52% | 1460 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,550 psi | 76% | 2441 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 37,985 psi | 77% | 2490 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,345 psi | 70% | 2356 fps | 95.2% |
| IMR 4831 | <<locked>> | 94% | 36,608 psi | 74% | 2487 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 35,244 psi | 71% | 2431 fps | 96.2% |
| IMR 8208 XBR | <<locked>> | 80% | 40,683 psi | 83% | 2487 fps | 98.7% |
| Lovex D073.6 | <<locked>> | 80% | 36,869 psi | 75% | 2451 fps | 99.2% |
| Lovex S060 | <<locked>> | 80% | 39,320 psi | 80% | 2421 fps | 97.3% |
| Lovex S062 | <<locked>> | 80% | 33,982 psi | 69% | 2362 fps | 97.2% |
| Norma 201 | <<locked>> | 80% | 37,652 psi | 76% | 2428 fps | 98.1% |
| Norma 202 | <<locked>> | 80% | 37,840 psi | 77% | 2444 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 33,837 psi | 69% | 2388 fps | 95.7% |
| Norma URP | <<locked>> | 94% | 38,464 psi | 78% | 2533 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 33,388 psi | 68% | 2398 fps | 95.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,711 psi | 81% | 2503 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,918 psi | 53% | 1499 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 35,650 psi | 72% | 2490 fps | 95.6% |
| ReloadSwiss RS 60 | 38.1 gr | 80% | 29,428 psi | 60% | 2352 fps | 96.5% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 37,811 psi | 77% | 2546 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 41,336 psi | 84% | 2477 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 35,824 psi | 73% | 2382 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 31,169 psi | 63% | 2333 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 36,869 psi | 75% | 2451 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 33,982 psi | 69% | 2362 fps | 97.2% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 34,969 psi | 71% | 2441 fps | 95.8% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 41,118 psi | 83% | 2503 fps | 95.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,217 psi | 75% | 2441 fps | 96.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,392 psi | 80% | 2398 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,300 psi | 66% | 2267 fps | 99.4% |
| Somchem S335 | <<locked>> | 80% | 38,856 psi | 79% | 2402 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 38,319 psi | 78% | 2454 fps | 96.9% |
| Somchem S355 | <<locked>> | 82% | 32,387 psi | 66% | 2346 fps | 95.7% |
| Somchem S365 | <<locked>> | 90% | 29,950 psi | 61% | 2372 fps | 96% |
| Vihtavuori N133 | <<locked>> | 80% | 39,610 psi | 80% | 2402 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,780 psi | 71% | 2375 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 35,795 psi | 73% | 2382 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 28,732 psi | 58% | 2238 fps | 95.8% |
| Vihtavuori N160 | <<locked>> | 92% | 38,043 psi | 77% | 2490 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 40,582 psi | 82% | 2484 fps | 98.7% |
| Vihtavuori N540 | <<locked>> | 80% | 34,403 psi | 70% | 2369 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 94% | 39,595 psi | 80% | 2539 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 31,575 psi | 64% | 2313 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 39,639 psi | 80% | 2520 fps | 99.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 36,390 psi | 74% | 2441 fps | 97.1% |
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 65 powders for 7 x 57 R loaded with the .284 | 145gr | Peregrine Glider GRM. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,697 fps; across all powders the maximum-charge window runs from 1,637 fps to 2,697 fps. Hodgdon Hybrid 100V gives the best case fill at 100 %, and 65 of the 65 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (340 MPa), the top charges use 70–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.284" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Hodgdon Hybrid 100V, Hodgdon TrailBoss, ReloadSwiss RS 14 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. ReloadSwiss RS 60, Alliant Reloder-17, Alliant Reloder-16 rank at the top here: for 7 x 57 R with the .284 | 145gr | Peregrine Glider GRM 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.