Counter Bore

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tpsharp
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Counter Bore

Post by tpsharp »

I was reading but do not understand about a counter bore on the rifle. Can anyone explain or better yet have a picture. Thanks
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Junk Yard Dog
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Re: Counter Bore

Post by Junk Yard Dog »

The arsenal drilled down into the muzzle end of your barrel about one inch. They did this with a special drill that is just large enough to remove the worn rifling from this last 1" of bore. They then cleaned it all up and now you have a good bore again. That last 1" takes a lot of wear from the issue cleaning rod scraping in and out, there is a bore guide with the tool kit, it seems many soldiers didn't use it. I do not have a picture handy, it's easy to tell if your rifle has a counter bore. Just take a round of 7.62x54r, insert it bullet first into the muzzle end of your barrel, if when it's stuck in there you can still see some amount of bullet then no counterbore. It the cartridge drops in all the way to the shoulder part of the case, that all of the bullet, and some of the actual cartridge case is fully inserted into the muzzle then you have a counterbore.
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tpsharp
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Re: Counter Bore

Post by tpsharp »

Thanks I was thinking it was inside the camber end.
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Darryl
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Re: Counter Bore

Post by Darryl »

Image
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qz2026
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Re: Counter Bore

Post by qz2026 »

Wow Dolk. That is a great bore shot. How did you do it? Special camera?
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bunkysdad
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Re: Counter Bore

Post by bunkysdad »

Sometimes they are deep and sometimes very shallow like on this 1943 Tikka M91.
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tpsharp
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Re: Counter Bore

Post by tpsharp »

I checked both of my rifles and they are not counter bored. Thanks for the information very helpful.
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Lee-online
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Re: Counter Bore

Post by Lee-online »

Just remember, a counter bored rifle does not effect the desirability of the rifle to a collector, only those who are miss informed assume a counter bored rifle as bad.
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bunkysdad
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Re: Counter Bore

Post by bunkysdad »

That's right, a counter bore is just another piece of the history of such firearms. And it sure will protect the crown from any further issues should you happen to accidentally ding your barrel.
wolfhollow
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Re: Counter Bore

Post by wolfhollow »

Lee-online wrote:Just remember, a counter bored rifle does not effect the desirability of the rifle to a collector, only those who are miss informed assume a counter bored rifle as bad.
I used to think that and passed up quite a few rifles
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ModelAUZI
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Re: Counter Bore

Post by ModelAUZI »

Now I know. Once again great info on this forum.. :thumbsup: :thumbsup:
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A J
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Re: Counter Bore

Post by A J »

wolfhollow wrote:
Lee-online wrote:Just remember, a counter bored rifle does not effect the desirability of the rifle to a collector, only those who are miss informed assume a counter bored rifle as bad.
I used to think that and passed up quite a few rifles
Me too. I passed up a nice $90 Mosin a couple years ago because it was counterbored. Yes, I'm an idiot! :cry:
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finloq
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Re: Counter Bore

Post by finloq »

As has been said many times: I'd rather have a counterbored rifle then a rifle that is not counterbored but needs to be.



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walnut red
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Re: Counter Bore

Post by walnut red »

Y'all have forgotten Psalms 20, verse 14. I always look askance at a counter bore when I'm buying and negotiating a price. Once the purchase is complete it makes no difference to me.
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finloq
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Counter Bore

Post by finloq »

Touche



"Self-realization. I was thinking of the immortal words of Socrates, who said, "... I drank what?"
"Self-realization. I was thinking of the immortal words of Socrates, who said, "... I drank what?"
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SA1911a1
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Re: Counter Bore

Post by SA1911a1 »

The most effective counter bore is to change the subject.
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JayPoc
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Re: Counter Bore

Post by JayPoc »

This one goes back over 1.75 inches! :big shock:
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http://gallery.connectedbypets.com/data ... erbore.jpg
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finloq
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Re: Counter Bore

Post by finloq »

Ivan fell asleep at the drill



"Self-realization. I was thinking of the immortal words of Socrates, who said, "... I drank what?"
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bunkysdad
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Re: Counter Bore

Post by bunkysdad »

My first m44 had a counter bore and at the time I bought it I had no idea what it was, so I researched it to find out why it had such a cool looking hole in the barrel.
Gunowner99
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Re: Counter Bore

Post by Gunowner99 »

I need to keep this in mind.
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