Worrying about over crimping plated bullets is really unfounded, unless you're purposely way over crimping what any jacked bullet would even require. Think about it, the groves in the rifling cut far deeper that the case mouth when crimped. You can see about the rifling never cut and exposed lead, nor did the crimp ring. I'm just saying, you dont have to baby them. I keep hearing people claim all sorts of silly things when it comes to plated bullets, most of it simply isn't true. Buy em, load em, shoot em, and enjoy. They're cheap, accurate, and really clean.