Originally Posted by Troutnut
Originally Posted by Kelljp
Appears to be 26
Is it a 12 gauge? Not sure if you know but the 16 and 20 were short chambers until the late 20s . Not a big deal just something to be aware of

Had a 20 gauge with 5 digit serial number. It had a standard 2.75" chamber. Think it was built in the mid teens.