This is why we all stopped only neck-sizing in the 1990’s. Just stop. Full length size with 2-3 thou shoulder bump. No more, no less.

Yes, you will be fine to pull the bullets, resize the cases, and reload. Powder, primers, and bullets will all be fine. Pull your decapping pin so the primers can stay in place. Use an inertial bullet puller packed with foam ear plugs to prevent tip damage. If you have crimp on the current rounds, or if you have excessive neck tension, you may need to run a smaller neck bushing or smaller expander to properly grip the pull-down bullets, but usually there is no issue.