Re: What if my necks are tight enough to hold a bullet firmly AFTER firing..
In a .332 ND chamber you have to turn necks anyway, you may as well turn a wee bit more for SAFE clearences. Even if your loaded rounds are .329-.330 you still wont be able to push a bullet in a fired case by hand. While it seems like a good idea to just shoot them and reseat a bullet it, getting concistent neck tension isnt always possible. It (IMHO) is much more concistent to neck size them for concistent results. I have toyed around with tight neck chambers and found that with that much neck turned off, and after FL resizing (the neck is smaller than the FL die and doesnt touch the neck) and then neck sizing there wasnt any runout worth sweating over. The downrange groups told the tale as well. She regularly shot 1/4 MOA. This was a 300 RUM with a .333 ND. One other reason I used this method (aside from keeping it safe) was some loads prefered .002 neck tension and others preferd .003 and yet another prefered .004. This allowed me to simply swap bushings in my neck die.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.