Thread: Full length resizing 7mm Rem Mag problem

Normal. When the brass is formed at the factory, that body-shoulder junction is going to be a little rounded. When you fire it, it'll pop out and form to the inside of the chamber (mostly). This is a perfectly good thing. Your sizing die may even sharpen the bend up even further when you run it through. Again, this isn't a bad thing.

If it chambers, you're good to go. Next, read up on shoulder bumping and try and set up the die to only bump 0.002".