I just read a review where they where tested in 3 different calibers and all 3 shed their cores. I'm a big Sierra fan but I don't like that idea.
Source?
They’ve worked fairly well for me. They’re accurate, the BC seems legit, and the 90 grainer .243 bullet absolutely hammered an antelope buck at 400 last fall. It obviously didn’t shed its core.... but I did find a few pieces of the green plastic tip in the exit wound.
