I received the above mentioned gun today. I tried to check the bore diameter with my Skeets gauge but it doesn't appear to go large enough. Did they make a gauge specifically for the 10 gauge? The instruction sheet gives a nominal bore dia. of .775 for a 10ga. The gauge went up to about .782 but it would still rattle around inside the bore so I couldn't get an accurate reading. The constriction on each barrel was about .765
Do you think that since the gun was ordered to shoot extra close that it would have had a larger than normal bore diameter for some reason??
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