I have an older 18XX Anschutz prone gun with a Hart Barrel that was installed by Karl Kenyon that I use for gallery..... this shim (sorry for the poor photo) was on the bolt, in front of that cylinder with the bolt handle attached. I assume it was a headspace mechanism... the rifle shoots very accurately without it, but it sometimes doesn't cock without forcibly slamming the bolt forward..... my question: The shim has a crack in it (the reason I now have it off the bolt), and I was wondering if I should replace it.... do these things come in kits, somewhere, or was it likely a one-off by Karl Kenyon? The barrel can't be headspaced normally because the action has been threaded. Any information appreciated.

If it was threaded it can be head spaced, I thought.

Call Neal Stepp at I.S.S 877-595-2090 he should be able to help you. If it's an Anschutz piece he will know it and may have one in stock.

Hey Mel, that shim looks like one from a kit made by "Surefire" to time their suppressor adaptors. I have a package of them that I will bring to Pe Ell tomorrow.
Pete

Got em' Pete! Thanks to you for the help! I'll bring the unused back to the Conard......thanks again!