Used to be Federal and CCI, however, the last box of federal I bought recently, has about a 30% odds of not cycling and are anemic and have to be cycled by hand in multiple different guns. So, I'm going to say CCI now.
Haven't tried winchester in a while now, and not really even sure if they're still making them, but I never have gotten what I consider stellar accuracy from them seeing is how their velocity varies so much that you can tell just by how it sounds that some have a distinct pop like they should and other times you pull the trigger is more of a thud.
