As I continue researching Gen4 Glocks for my first Glock purchase, I'm finding there are brands / types of ammo to avoid in the Gen4 9mm pistols to avoid getting hit in the face with brass, namely Federal Champion 115 gr FMJ from Walmart. Now I've run a thousand rounds or so of this ammo through my SIGs and have not had any problems. But I guess a Gen 4 Glock may not be on the same level of reliability/durability as a SIG? I don't know. Are there specific brands of practice/FMJ ammo that are generally recommended to minimize brass to the face? Other than the Federal Champion stuff, I've mostly shot Federal American Eagle 124 gr, Sellier & Bellot 115 gr, WWB 115 gr. I rely on Federal 124 HST or Speer 124 gr GD (both sometimes +p) for carry. Are these brands ok? What are you guys running through your Gen4s to avoid BTF issues? Wanna kill these ads? We can help!