I have this old 12 ga. 101 and I'm trying to figure out what the choke costriction is. It's marked Skt/Skt so I assume it's somewhere around .005". I can measure the dia. of the muzzel but witout knowing the actual bore dia. I won't know the constriction. I don't have a bore gauge. Has anyone ever measured one? They were probably all the same. Older gun around 1970 without tubes. Thanks.

Last edited by Jim Moore; 01/23/13 07:56 PM.
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