Dumb new Lapua brass question

[Pwrbomb1970]

No resizing of new brass. It’s already at the smallest size it will ever be. Sizing it is just working the brass more than you need to. I always look at my brass and measure length to ensure concentric length. I may trim to get that but it’s not always necessary as once again you are trimming away brass from your new case thus less times you are gonna get to fire it. Make sure your case mouth is round. Run it through a mandrel of appropriate size if it isn’t. I have never had to do that with Lapua. Chamfer inside and outside to remove burrs.