Load Specifications
Load data in caliber 5.6 x 70 R with .224 | 62gr | Barnes TAC-X bullet and 8 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 2495 | <<locked>> | 82% | 31,792 psi | 84% | 2746 fps | 98.6% |
| Accurate 4064 | <<locked>> | 84% | 32,372 psi | 86% | 2772 fps | 96.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,750 psi | 90% | 2011 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,794 psi | 90% | 2054 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 33,199 psi | 88% | 2703 fps | 97.5% |
| Vihtavuori N135 | <<locked>> | 82% | 33,054 psi | 88% | 2776 fps | 98.9% |
| Vihtavuori N140 | <<locked>> | 82% | 34,098 psi | 90% | 2769 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 82% | 32,909 psi | 87% | 2743 fps | 96% |
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% | 29,776 psi | 79% | 2690 fps | 98.1% |
| Accurate 4064 | <<locked>> | 82% | 30,052 psi | 80% | 2710 fps | 95.5% |
| Hodgdon TrailBoss | 9 gr | 80% | 25,019 psi | 66% | 1804 fps | 100% |
| ReloadSwiss RS 14 | 9.1 gr | 80% | 24,787 psi | 66% | 1841 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,921 psi | 77% | 2585 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 30,589 psi | 81% | 2710 fps | 98.2% |
| Vihtavuori N140 | <<locked>> | 80% | 32,024 psi | 85% | 2713 fps | 96.3% |
| Vihtavuori N540 | <<locked>> | 80% | 30,951 psi | 82% | 2690 fps | 95.2% |
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 20 powders for 5.6 x 70 R loaded with the .224 | 62gr | Barnes TAC-X. Hodgdon LEVERevolution delivers the highest muzzle velocity at 2,818 fps; across all powders the maximum-charge window runs from 2,011 fps to 2,818 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 20 of the 20 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (260 MPa), the top charges use 84–90 %, leaving at least 10 % headroom. The 62.0 gr projectile in 0.224" calls for a 1:9.0 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. ReloadSwiss RS 14, Hodgdon TrailBoss rank at the top here: for 5.6 x 70 R with the .224 | 62gr | Barnes TAC-X they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder- TS 15.5, Bofors RP3, Hodgdon Hybrid 100V 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.