I checked my 16ga sterlingworth, 30" barrels with skeets gauge

right= bore .659 choke .641

left= bore .660 choke .619

gun serial #366321

keep in mind that if a barrel didn't clean up at the desired bore diameter the factory just keep honing until it did within limits. From what I have seen Fox barrel bores usually are undersized.

Jim

I learn something every day, and a lot of times it's that what I learned the day before was wrong