20ga. Damascus bore diameter

[crs]

I have a picture of my Grade 2 with 26 inch barrels, but no measurement of bores.


I do not have a micrometer.
Will a RCBS thumb operated case measurement tool with dial readout to .001 inch do for measuring ID at the muzzles?

The gun was made in 1900 and according to the Parker letter, returned to the factory for mods twice before being bought and hunted hard by a lady in Southeast OK. My dad knew the family and upon their passing, picked up this gun for his sons.
I was the smallest and the only one that it fit, so it became mine and went off to college with me back in 1960. It will stay in the family after I pass, so it is not for sale. I guess I should do a Provenance document on this gun like I have for my double rifles - before I forget the details.

[Dean Romig]

Originally Posted by Charles Shelton

Will a RCBS thumb operated case measurement tool with dial readout to .001 inch do for measuring ID at the muzzles?.

It won't tell you anything but the I.D. at the muzzle. It won't even give you the choke constriction because it won't measure the bore diameter which is your starting point for determining constriction in thousandths from the bore.





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