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Old April 20, 2010, 07:02 PM   #1
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Join Date: April 17, 2010
Location: Washington State
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Land Groove Dimensions?

I know I'm probably asking a question that's been asked many times before. I also know there's no generic answer. I just need a rough ballpark figure.

Could someone tell me the ID difference between the lands and grooves to a general measurement of what to expect in a 22 Hornet Rifle?

Or, depending how you look at it: The height of the lands or depth of the grooves.

Thanks in advance.

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Old April 20, 2010, 07:20 PM   #2
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Join Date: March 31, 2010
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Depends on the rifle, especially a Hornet

as they have been around so long. Some are .223 some .224 to start with.
Slug the bore and get a real good set of OD and depth mikes to answer your question. (The reason for which is a mystery to me)
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Old April 20, 2010, 07:45 PM   #3
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Typically, US-made barrels use a .219" bore diameter with .224" groove diameter. European-made barrels use a .218" bore with .224" groove diameter.
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Old April 20, 2010, 08:14 PM   #4
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Thank you Brandy and Scorch. That's exactly what I needed to know. Much appreciated.

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