The L.C. Smith Collectors Association
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Re: 20g Field Grade
Posted by David Williamson on June 14, 2021, 6:01 am, in reply to "20g Field Grade
A choke gage is good to have if you are going to buy a gun to see that it has choke/s. Using a small hole gauge and then using a micrometer is the best way to tell.
In order to get the right constriction (choke) you need to know the bore. A 20 gauge bore should be .615 and your reading would indicate full/xfull.