I agree.....resize them first....the cases will actually grow in resizing...then trim and deburr

Personally, I resize, then trim, deburr and tumble if needed.
Just my way.

Most trimmers instructions state that cases must be FL sized before trimming. I know my RCBS does.

Just wondering which order I should do these steps in, or if it makes any difference. Should I trim and debur my cases before I neck size or FL, or after. I've always done it after because I thought when resizing, your doing just that resizing, so trimming should come after. Right? Wrong? thanks.