I had a 17 rem built several years ago with a fairly tight chamber. During initial load development I used R-P brass ( non nickel plated). I then bought a few hundred R-P brass that were nickel. I used the same load data as before and it was clearly over pressure. I assumed it was due to the necks being thicker from the nickel plating and there not being enough room in the throat of the chamber to allow the neck to swell and let go of the bullet. I went back to std brass and the problem went away. That nickel brass now belongs to a Rem 700 .17 and I’ve. Never had any issues with it in the other rifle. I thought about turning the necks a bit but never tried that.
