For dies, I am currently using Forster full length sizing die with the neck honed to .288”. Also using the Forster Micrometer seater. This combo produces really concentric ammo for me and is not cost prohibitive. I’ve had equally good results with a Redding body die and Lee collet die with the Forster seater, but it adds one more step to the sizing process. You can buy the Forster from any retailer and send it in to have them hone the neck but it is probably quicker to just give them a call and order the honed die directly from them.
The Hornady brass will work fine but maybe is not quite as concentric in the necks as some of the other brands like Alpha or Lapua. I am currently using Alpha and it seems superb.
If I was going to use the once fired Hornady (and I have), I clean it good, and anneal it. I then start with a piece that won’t quite chamber in my rifle and adjust my sizing die so that piece of brass fits the chamber just right with the bolt closing on it so that there is barely noticeable resistance.
If going with new Alpha, I run it through my Forster FL die with expander ball so that it sets the neck nension to something useable. You could do the same with an expander mandrel if that’s how you roll. The Alpha brass is outstanding but it comes with the necks VERY tight.
John