Load Specifications
Load data in caliber 5.6 x 70 R with .224 | 69gr | Winchester HPBT bullet and 4 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% | 33,997 psi | 90% | 2680 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 98% | 33,446 psi | 89% | 1886 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 98% | 33,678 psi | 89% | 1932 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 33,707 psi | 89% | 2585 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 4064 | <<locked>> | 80% | 31,923 psi | 85% | 2628 fps | 97.3% |
| Hodgdon TrailBoss | 8.7 gr | 80% | 25,338 psi | 67% | 1706 fps | 100% |
| ReloadSwiss RS 14 | 8.9 gr | 80% | 25,643 psi | 68% | 1749 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,647 psi | 84% | 2536 fps | 97.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
This overview compares 4 powders for 5.6 x 70 R loaded with the .224 | 69gr | Winchester HPBT. Accurate 4064 delivers the highest muzzle velocity at 2,680 fps; across all powders the maximum-charge window runs from 1,886 fps to 2,680 fps. Hodgdon TrailBoss gives the best case fill at 98 %, and 4 of the 4 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (260 MPa), the top charges use 89–90 %, leaving at least 10 % headroom. The 69.0 gr projectile in 0.224" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for 5.6 x 70 R with the .224 | 69gr | Winchester HPBT 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.