Load Specifications
Load data in caliber 7 x 57 R with .284 | 160gr | Peregrine Glider GRM bullet and 64 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 62, Alliant Reloder-16 and Norma URP.
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% | 44,092 psi | 89% | 2415 fps | 100% |
| Accurate 4064 | <<locked>> | 88% | 44,454 psi | 90% | 2454 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 43,018 psi | 87% | 2500 fps | 98% |
| ADI AR 2206H | <<locked>> | 82% | 43,221 psi | 88% | 2431 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 88% | 44,338 psi | 90% | 2438 fps | 98.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 42,018 psi | 85% | 2513 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 43,613 psi | 88% | 2454 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 86% | 43,961 psi | 89% | 2467 fps | 98.7% |
| Alliant Reloder-16 | <<locked>> | 96% | 43,120 psi | 87% | 2513 fps | 98.2% |
| Alliant Reloder-17 | <<locked>> | 92% | 43,149 psi | 88% | 2543 fps | 99.4% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 34,272 psi | 70% | 2362 fps | 97.1% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 42,250 psi | 86% | 2434 fps | 97.8% |
| Bofors RP3 | <<locked>> | 88% | 43,062 psi | 87% | 2457 fps | 99.5% |
| Hodgdon BL-C2 | <<locked>> | 82% | 43,671 psi | 89% | 2457 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 88% | 44,614 psi | 90% | 2470 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 82% | 43,584 psi | 88% | 2444 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 42,148 psi | 85% | 2457 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 42,061 psi | 85% | 2467 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,954 psi | 71% | 1549 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 44,585 psi | 90% | 2444 fps | 99.4% |
| IMR 3031 | <<locked>> | 82% | 43,004 psi | 87% | 2438 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 43,613 psi | 88% | 2418 fps | 98.6% |
| IMR 4831 | <<locked>> | 98% | 44,237 psi | 90% | 2503 fps | 98.3% |
| IMR 4895 | <<locked>> | 84% | 42,482 psi | 86% | 2451 fps | 98.9% |
| Lovex D073.6 | <<locked>> | 82% | 41,843 psi | 85% | 2411 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 43,642 psi | 89% | 2375 fps | 98.9% |
| Lovex S062 | <<locked>> | 86% | 43,250 psi | 88% | 2418 fps | 99.6% |
| Lovex S065 | <<locked>> | 92% | 42,583 psi | 86% | 2408 fps | 96.4% |
| Norma 201 | <<locked>> | 82% | 42,148 psi | 85% | 2388 fps | 99.5% |
| Norma 202 | <<locked>> | 82% | 42,482 psi | 86% | 2398 fps | 100% |
| Norma 203B | <<locked>> | 86% | 43,236 psi | 88% | 2454 fps | 98.9% |
| Norma URP | <<locked>> | 96% | 43,439 psi | 88% | 2503 fps | 97.9% |
| Ramshot Big Game | <<locked>> | 86% | 43,134 psi | 87% | 2474 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 96% | 42,598 psi | 86% | 2493 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 44,454 psi | 90% | 2461 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,346 psi | 72% | 1588 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 43,526 psi | 88% | 2516 fps | 98.6% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 43,163 psi | 88% | 2552 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 42,801 psi | 87% | 2523 fps | 97.6% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 43,801 psi | 89% | 2543 fps | 97.1% |
| Rottweil R 902 | <<locked>> | 84% | 42,496 psi | 86% | 2385 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 90% | 43,294 psi | 88% | 2454 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 42,583 psi | 86% | 2408 fps | 96.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 41,843 psi | 85% | 2411 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 43,250 psi | 88% | 2418 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 42,003 psi | 85% | 2461 fps | 98.7% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 43,279 psi | 88% | 2418 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 41,814 psi | 85% | 2405 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 43,859 psi | 89% | 2346 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 43,714 psi | 89% | 2349 fps | 100% |
| Somchem S335 | <<locked>> | 82% | 43,308 psi | 88% | 2349 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 43,033 psi | 87% | 2418 fps | 98.8% |
| Somchem S355 | <<locked>> | 90% | 43,976 psi | 89% | 2454 fps | 99.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 43,816 psi | 89% | 2552 fps | 99.9% |
| Vihtavuori N133 | <<locked>> | 82% | 44,121 psi | 89% | 2343 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 42,061 psi | 85% | 2372 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 43,018 psi | 87% | 2385 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 42,380 psi | 86% | 2398 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 94% | 42,540 psi | 86% | 2451 fps | 97.6% |
| Vihtavuori N540 | <<locked>> | 86% | 44,121 psi | 89% | 2421 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 44,541 psi | 90% | 2503 fps | 97.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 36,593 psi | 74% | 2428 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 43,250 psi | 88% | 2441 fps | 99.3% |
| Winchester StaBALL Match | <<locked>> | 84% | 43,990 psi | 89% | 2461 fps | 99.4% |
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% | 35,969 psi | 73% | 2280 fps | 100% |
| Accurate 4064 | <<locked>> | 80% | 34,040 psi | 69% | 2270 fps | 99.8% |
| Accurate 4350 | <<locked>> | 90% | 34,896 psi | 71% | 2346 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 40,466 psi | 82% | 2382 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 34,519 psi | 70% | 2247 fps | 96.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 36,550 psi | 74% | 2398 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 33,562 psi | 68% | 2260 fps | 97.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 36,274 psi | 74% | 2320 fps | 96.9% |
| Alliant Reloder-16 | 37.6 gr | 88% | 33,707 psi | 68% | 2313 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 82% | 30,835 psi | 63% | 2270 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 96% | 30,342 psi | 62% | 2260 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 39,566 psi | 80% | 2385 fps | 97.2% |
| Bofors RP3 | <<locked>> | 80% | 32,880 psi | 67% | 2260 fps | 97.5% |
| Hodgdon BL-C2 | <<locked>> | 80% | 40,857 psi | 83% | 2408 fps | 99.6% |
| Hodgdon H380 | <<locked>> | 82% | 36,434 psi | 74% | 2316 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 40,799 psi | 83% | 2392 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 30,763 psi | 62% | 2221 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,782 psi | 75% | 2365 fps | 98.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,817 psi | 52% | 1378 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,349 psi | 80% | 2352 fps | 98.6% |
| IMR 3031 | <<locked>> | 80% | 40,045 psi | 81% | 2388 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,216 psi | 73% | 2277 fps | 96.9% |
| IMR 4831 | <<locked>> | 90% | 33,837 psi | 69% | 2306 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 37,115 psi | 75% | 2346 fps | 97.7% |
| Lovex D073.6 | <<locked>> | 80% | 39,073 psi | 79% | 2362 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 41,176 psi | 84% | 2333 fps | 98.5% |
| Lovex S062 | <<locked>> | 80% | 35,911 psi | 73% | 2280 fps | 98.5% |
| Lovex S065 | <<locked>> | 90% | 39,914 psi | 81% | 2359 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 39,392 psi | 80% | 2336 fps | 99.1% |
| Norma 202 | <<locked>> | 80% | 39,711 psi | 81% | 2349 fps | 100% |
| Norma 203B | <<locked>> | 80% | 35,621 psi | 72% | 2310 fps | 97.3% |
| Norma URP | 39.1 gr | 90% | 35,752 psi | 73% | 2352 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 35,128 psi | 71% | 2320 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 94% | 39,943 psi | 81% | 2441 fps | 95% |
| Ramshot Wild Boar | <<locked>> | 80% | 41,640 psi | 84% | 2411 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,252 psi | 53% | 1417 fps | 100% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 37,536 psi | 76% | 2405 fps | 97.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 30,821 psi | 63% | 2280 fps | 98.3% |
| ReloadSwiss RS 62 | 41.4 gr | 90% | 34,998 psi | 71% | 2365 fps | 95.2% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 38,159 psi | 77% | 2428 fps | 95.2% |
| Rottweil R 902 | <<locked>> | 80% | 37,434 psi | 76% | 2293 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 30,806 psi | 62% | 2208 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 39,914 psi | 81% | 2359 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,073 psi | 79% | 2362 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 35,911 psi | 73% | 2280 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 32,024 psi | 65% | 2254 fps | 95.8% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 40,509 psi | 82% | 2369 fps | 96.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 38,885 psi | 79% | 2352 fps | 98% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,278 psi | 84% | 2306 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,011 psi | 69% | 2185 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 40,582 psi | 82% | 2306 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 40,277 psi | 82% | 2369 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 31,879 psi | 65% | 2218 fps | 96.6% |
| Somchem S365 | <<locked>> | 84% | 26,179 psi | 53% | 2152 fps | 95.2% |
| Vihtavuori N133 | <<locked>> | 80% | 41,553 psi | 84% | 2303 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 36,840 psi | 75% | 2287 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 37,579 psi | 76% | 2290 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 30,298 psi | 61% | 2162 fps | 97.4% |
| Vihtavuori N160 | <<locked>> | 88% | 35,027 psi | 71% | 2306 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 36,216 psi | 73% | 2283 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 34,389 psi | 70% | 2310 fps | 95% |
| Vihtavuori N555 | <<locked>> | 96% | 32,169 psi | 65% | 2329 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 28,950 psi | 59% | 2139 fps | 95% |
| Winchester StaBALL Match | <<locked>> | 80% | 38,232 psi | 78% | 2356 fps | 98.4% |
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 64 powders for 7 x 57 R loaded with the .284 | 160gr | Peregrine Glider GRM. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,552 fps; across all powders the maximum-charge window runs from 1,549 fps to 2,552 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 64 of the 64 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 160.0 gr projectile in 0.284" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, 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 62, Alliant Reloder-16, Norma URP rank at the top here: for 7 x 57 R with the .284 | 160gr | 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.