Re: OK.. Now what..!?!
I have yet to meet the magician who can engrave a bullet .250" without shoving the bullet back in the neck of the case. If you view the marks carefully, you might find they represent a tight free bore area with burrs. Notice that the helix of the marks change, this probably represents the internal burrs marking the bullet when the bolt is indexed to full lock-up. I doubt JB will fix this one, but I would try it anyway, the alternative is much more expensive. On the outside chance your bullets are oversized, you might want to mic them and make sure they are .3083" or smaller.
Those are not likely to be land marks, does not look right, unless the rifle is used and the lands have dissappeared....
The other possibility may be the throat is burnt out, I would say take a peek with a bore scope, but I am afraid what you find might induce nightmares.
Either way, the dude who cut that chamber...... well, I promised Len I would try to be nice.
[ 05-30-2003: Message edited by: S1 ]