Are you flying C-12's in the Army? If so, it's going to be more difficult, honestly.
The majors think very little of helicopter time, and the Army's training track doesn't do any favors there. I would expect to spend some time at a regional, get your ATP and 121 time. You might find yourself closer to the civilian hiring candidate stats than the Air Force ones, unfortunately.
With the addition of the RTP programs, and the vast numbers of army helo pilots at the regionals, it's going to be hard to differentiate your resume from them.
If you're not in the army, very little of this applies. Good luck.