Load Specifications
Load data in caliber 5.6 x 70 R with .224 | 75gr | Peregrine Glider GRM bullet and 10 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 14 and Hodgdon TrailBoss.
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 4064 | <<locked>> | 82% | 34,055 psi | 90% | 2579 fps | 98.5% |
| Accurate 4064 | <<locked>> | 82% | 32,750 psi | 87% | 2556 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 98% | 33,634 psi | 89% | 1795 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 98% | 33,417 psi | 89% | 1795 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 98% | 33,910 psi | 90% | 1837 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 98% | 33,620 psi | 89% | 1837 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 33,359 psi | 88% | 2631 fps | 96.6% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 34,040 psi | 90% | 2487 fps | 98.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 33,199 psi | 88% | 2474 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 86% | 33,663 psi | 89% | 2539 fps | 96.2% |
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 4064 | <<locked>> | 80% | 31,865 psi | 85% | 2523 fps | 97.9% |
| Accurate 4064 | <<locked>> | 80% | 30,589 psi | 81% | 2500 fps | 97.5% |
| Hodgdon TrailBoss | 8.3 gr | 80% | 25,527 psi | 68% | 1621 fps | 100% |
| Hodgdon TrailBoss | 8.3 gr | 80% | 25,280 psi | 67% | 1621 fps | 100% |
| ReloadSwiss RS 14 | 8.5 gr | 80% | 25,860 psi | 69% | 1663 fps | 100% |
| ReloadSwiss RS 14 | 8.5 gr | 80% | 25,556 psi | 68% | 1660 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 31,038 psi | 82% | 2562 fps | 95.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,850 psi | 84% | 2438 fps | 98.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,038 psi | 82% | 2425 fps | 98.2% |
| Vihtavuori N150 | <<locked>> | 84% | 31,502 psi | 84% | 2484 fps | 95.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
This overview compares 42 powders for 5.6 x 70 R loaded with the .224 | 75gr | Peregrine Glider GRM. Vihtavuori N555 delivers the highest muzzle velocity at 2,657 fps; across all powders the maximum-charge window runs from 1,795 fps to 2,657 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 42 of the 42 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (260 MPa), the top charges use 83–90 %, leaving at least 10 % headroom. The 75.0 gr projectile in 0.224" calls for a 1:6.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-23, Vihtavuori N555 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 14, Hodgdon TrailBoss rank at the top here: for 5.6 x 70 R with the .224 | 75gr | Peregrine Glider GRM they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 4350, ADI AR 2208, Alliant Reloder- TS 15.5 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.