All the best with this one and it will be interesting, but I use several brands in my collection of centrefires and rimfires as I find different brands suit the different calibres and different purposes.
For example in the .223 Wolf for Hunting and Barnaul for Target, .243, PPU does most things although some manufacturers light ballistic tips produce very destructive results, 7.62 Radway Green but .308 almost any brand!!!! etc etc, even bigger mix on the rimfires!!!
Federal and American Eagle are the same brand, just marketed under different names!
Shotgun wise I am not good enough