Skeets bore gauge 20/28

[Bob Hardison]

Just received my Bulley bore gauge. I am impressed with the quality, ability to obtain repeatable measurements, accuracy and its ease of use. I measured a couple of modern 12 and 16 bores along with two Parker 12’s and one 16 gauge.

One of the Parker 12 bores I thought to be original throughout. It is the only one I checked that has bore dimensions out of line. The nominal 0.730” dimension measures 0.753” on this hammer gun. The normal IC choke dimension patterns like an IC choke. The letter indicates its pattern as 175 pellets of #8 shot. Is it possible that the barrels left the factory with 0.753” bores?

The barrel wall thickness measures strong as seen in the attached JPEG. Any input would be appreciated. Bob

[edgarspencer]

Originally Posted by Bob Hardison

Is it possible that the barrels left the factory with 0.753” bores?

Yes, Not only possible, but very likely.