Load Specifications
Load data in caliber 5.6 x 70 R with .224 | 62gr | Barnes TTSX BT bullet and 7 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>> | 84% | 33,678 psi | 89% | 2792 fps | 99% |
| Accurate 4064 | <<locked>> | 86% | 33,881 psi | 90% | 2812 fps | 97% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 33,533 psi | 89% | 1998 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 33,576 psi | 89% | 2044 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 32,634 psi | 87% | 2684 fps | 97.2% |
| Vihtavuori N135 | <<locked>> | 82% | 32,401 psi | 86% | 2756 fps | 98.6% |
| Vihtavuori N140 | <<locked>> | 82% | 33,547 psi | 89% | 2753 fps | 96.8% |
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% | 29,124 psi | 77% | 2671 fps | 97.7% |
| Accurate 4064 | <<locked>> | 82% | 29,472 psi | 78% | 2690 fps | 95.1% |
| Hodgdon TrailBoss | 8.8 gr | 80% | 24,700 psi | 66% | 1791 fps | 100% |
| ReloadSwiss RS 14 | 9 gr | 80% | 24,845 psi | 66% | 1837 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 28,384 psi | 75% | 2569 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 29,950 psi | 79% | 2690 fps | 97.9% |
| Vihtavuori N140 | <<locked>> | 80% | 31,488 psi | 84% | 2697 fps | 95.9% |
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 7 powders for 5.6 x 70 R loaded with the .224 | 62gr | Barnes TTSX BT. Accurate 4064 delivers the highest muzzle velocity at 2,812 fps; across all powders the maximum-charge window runs from 1,998 fps to 2,812 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 7 of the 7 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (260 MPa), the top charges use 86–90 %, leaving at least 10 % headroom. The 62.0 gr projectile in 0.224" calls for a 1:8.5 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 TTSX BT 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.