At one point they were using Speer bullets, but that was a long time ago. They are both owned by ATK, so maybe that's still the case.
Federal does make some of their own bullets in house, as an example they make the bullets in their Fusion line themselves.
If you are looking for a 150gr bullet for killing deer, Speer's work fine. Speer flat base bullets are one of the easiest to work with when it comes to getting good hunting quality groups out of hunting rifles. The 150gr Nosler Ballistic tip's another fine deer slayer.
Last edited by antelope_sniper; 10/01/19.