The marking is the inner bore diameter, and I think it is land to land.
From a previous posting
[quote]the 8,82 indicates the bore diameter or the distance from the top of one land to the top of an opposing land...<hr></blockquote>
So you will see 8.83, 8,82, etc on guns.
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Edward Tinker
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Co-Author of Police Lugers - Co-Author of Simson Lugers
Author of Veteran Bring Backs Vol I, Vol II, Vol III and Vol IV
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