So there I was, a new handloader with a generous budget... I read everything I could for weeks before I made my first kit purchase, and accumulated more stuff from there on out. One of the things that seemed necessary for optimum accuracy was a primer pocket uniforming tool (I bought the Redding hand tool). Here I am, now on the 5th and 6th reloadings of .223, and I'm finding that the primers are VERY loose (not so much that they don't hold, but enough where they don't give much resistance when seating them). I then took a bag of brand new Winchester brass, didn't uniform the pocket at all, loaded as usual, and there is NO difference whatsoever in accuracy, or POI. I think that all I did was shorten the life of my brass (that I annealed, neck turned, flash hole uniformed, and sorted by weight). What a waste of time! Just a word of caution for those who want to get the most life out of brass... taking away the support structure around the primer may not be the best move.