I use mostly Winchester brass, the reason is that I've had to throw away a lot of Remington brass due to enlarging primer pockets and flash holes, this is for a 300WSM, and after only the third loading. So far, out of 65 pieces of Remington brass, I have 15 left, the rest have been discarded for a variety of issues, mostly expanding primer pockets that can no longer hold the primer sufficiently. In contrast, my Winchester brass is on its 5th loading going on its 6th and is still fine, although I don't expect it to last much longer.