I do the same except I use a Forster neck sizing die and remove de capping pin.Yes yes and yes. Only pull with the correct collet bullet puller, dump and save the powder for reuse, I have a FL sizer with the decapping pin removed and run the case all the way through the sizer. Then when I put it all back together I use a runout gauge; out of a thousand I have done I had two where the bullet was deformed and failed my runout test. There is room in any process for a degree of failure to creep in, just be careful, aware and observant.
This is what I do as well.Yes, but I would go through resizing the neck before reloading them.