Quote Originally Posted by Zero333 View Post
No need to take the firing pin out.

I understand what you mean by "better feel", but that's overkill.
I got a Shilen barrel Wed. and put it on a M10. Tried headspacing with the firing pin in, and the force required to cycle the bolt was excessive. I don't know how or why anyone would headspace a gun with the firing pin in the bolt. There's no "feel"!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!