Received my order of 100 Remington 444 Marlin brass. 20/100 are damaged at the case mouth. Some look salvageable, but others have the case mouth nearly smashed closed. Most are "oblong" at the mouth. Didn't bother to send them back to Cabela's as I want to get reloading and am content with 80+/- for now as its hard to find in town.
I'm going to re-size all the brass before I use it. Is it standard practice to re-size new brass, or is it just preference?