I have a Savage short action with a Criterion barrel in .223. the bolt originally had a .308 bolt head. i replaced it with a Savage factory .223 bolt head. (seen here)
trying to figure out what these concentric circles forming on the bolt face mean.
I assembled and headspaced the bolt with a go gauge and then the scotch tape over the go gauge as a no go gauge as i have done with other builds with pre fit barrels. no sign of headspace issues in difficulty in chambering rounds or excessive brass stretch, etc. as of late, the rifle has been shooting a bit erratically.
any ideas as to the cause of these etched circles?
trying to figure out what these concentric circles forming on the bolt face mean.
I assembled and headspaced the bolt with a go gauge and then the scotch tape over the go gauge as a no go gauge as i have done with other builds with pre fit barrels. no sign of headspace issues in difficulty in chambering rounds or excessive brass stretch, etc. as of late, the rifle has been shooting a bit erratically.
any ideas as to the cause of these etched circles?
