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Posted: 3/27/2006 3:34:33 PM EDT
I've heard of them, but what exactly is it. Anybody got a photo of what one looks like?
Link Posted: 3/27/2006 3:37:20 PM EDT
Link Posted: 3/27/2006 3:39:36 PM EDT
Also called a recessed crown. Helps to protect the muzzle.
Link Posted: 3/27/2006 3:43:16 PM EDT
So it's just a recrowned muzzle then? Heck, I've done a couple of those myself.
Link Posted: 3/27/2006 3:53:01 PM EDT
[Last Edit: 3/27/2006 3:53:36 PM EDT by raf]
Link Posted: 3/27/2006 3:53:19 PM EDT
Well I have a few in my collection. What is really is, is when you drill out the bore from the muzzle end of a barrel. It is used to restore the accuracy of a barrel that has muzzle damage. If you counterbore the barrel an inch or so you get back to the good rifling and it can bring new life to a bad barrel. It is common to see it done on old Mausers or Mosins.

Sorry i don't have any pics but they don't look anything like the ones posted here so far. I think those pics are of target crowns more then counterbored muzzles.
Link Posted: 3/27/2006 3:58:53 PM EDT
... technically, it's not drilled, it is counterbored.

... and, it's advisable not to use a pilot when machining the crown - nothing other than coolant should touch the bore during the operation.

Link Posted: 3/27/2006 4:09:46 PM EDT

Originally Posted By bookertbab:
Sorry i don't have any pics but they don't look anything like the ones posted here so far. I think those pics are of target crowns more then counterbored muzzles.


That's what I was thinking the pic was. My M24 has the recessed crown, and looks like the pic that was posted by Slaughter. If counterboring is a repair step, then that is definately not what I was thinking of.
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