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Old 05-26-2005, 09:37 AM
Irish John

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What is the diameter of a .22 bore?



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This may be a little off topic but I hope someone can help. I have an Winchester Low-wall which was made in 1897. It is currently chambered in 25-20 WCF, however the bore is gone. The rifle also came with a heavy replacement barrel of new manufacture which I would like to install on this action. I was told the barrel was a .22 caliber but no specifics on the bore diameter. It has had no chamber cut in it. I am considering using this to build this rifle into a 218 Bee as I would not have to change the extractor or hammer to a rimfire.

I need to slug the barrel to see if it is a .223 or .224 bore. What is the bore size of a .22 rimfire? A .224 would give me more choice of bullets. If it is a .223, I may go ahead and change it over to a .22magnum or .17HMR as the action has a factory set trigger and is very nice. Wh
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Old 05-26-2005, 09:51 AM
BigMike

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Lightbulb Bore & Groove Diameters

Irish John,

Bore Diameters:

.22 Long Rifle: .217" - .218"

.22 Centerfire: .219"


Groove Diameters:

.22 Long Rifle: .222" - .223"

.22 Centerfire: .224"



Hope this helps.......

PS: Don't forget to check the twist rate.......

`

BigMike
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Old 05-26-2005, 01:27 PM
Irish John

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Big Mike,

Thanks for the help. I'll slug the barrel tonight.

Irish John
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