Quote Originally Posted by bootsmcguire View Post
.473" is nominal for the brass so the head is going to be a bit larger than that in diameter.

I just measured 3 different bolt heads ( 1 from the 70's era, 1 from 90's era, and one that less than 3 years old) and all three work great and all measure .481"-.482" in diameter. I have another one here that works most of the time and is .490". I set it aside so I could open it up in the future if I ever need to for possibly doing an oddball chambered barrel in the future.

The extractor should take up most of the slop in a bolt head for the first bit of extraction since the chamber is holding the brass straight, but once the brass starts to clear the chamber I have had the sloppy ones let go of the brass. Unless its really sloppy the .140" extractor ball normally takes care of it.
OK. I measured the outside. I'll check the inside.