Load Specifications
Load data in caliber 5.6 x 70 R with .224 | 50gr | Winchester Pointed Soft Point bullet and 6 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate 2495, 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 2495 | <<locked>> | 88% | 32,706 psi | 87% | 3005 fps | 96.9% |
| Alliant AR-Comp | <<locked>> | 84% | 33,562 psi | 89% | 3071 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 32,634 psi | 87% | 2192 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 32,561 psi | 86% | 2238 fps | 100% |
| Vihtavuori N133 | <<locked>> | 82% | 32,619 psi | 87% | 2920 fps | 96.2% |
| Vihtavuori N135 | <<locked>> | 88% | 33,663 psi | 89% | 3031 fps | 97% |
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 | 26.6 gr | 84% | 28,369 psi | 75% | 2877 fps | 95% |
| Alliant AR-Comp | <<locked>> | 80% | 29,501 psi | 78% | 2949 fps | 97.8% |
| Hodgdon TrailBoss | 8.7 gr | 80% | 23,931 psi | 63% | 1965 fps | 100% |
| ReloadSwiss RS 14 | 8.9 gr | 80% | 24,004 psi | 64% | 2014 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 30,618 psi | 81% | 2864 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 84% | 29,240 psi | 78% | 2900 fps | 95.1% |
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 6 powders for 5.6 x 70 R loaded with the .224 | 50gr | Winchester Pointed Soft Point. Alliant AR-Comp delivers the highest muzzle velocity at 3,071 fps; across all powders the maximum-charge window runs from 2,192 fps to 3,071 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 6 of the 6 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (260 MPa), the top charges use 86–89 %, leaving at least 11 % headroom. The 50.0 gr projectile in 0.224" calls for a 1:7.0 twist; slower twists will usually not stabilise this weight. 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. Accurate 2495, ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for 5.6 x 70 R with the .224 | 50gr | Winchester Pointed Soft Point 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.