Near the breech.
You may have to break the shotgun down in to the barrel section and the receiver section first.Look under the barrel section on the flat just ahead of the lug for the serial number.
That is the rear end of the barrel where the shell is inserted.
Check the frame and barrel
Made by J Stevens Arms between 1920 and 1948.
CHeck the barrel and receiver.
how old is my Iver Johnson single barrel shotgun champion model 3578 C with a 12 gauge choke bore barrel and lug forged in one and approximate value .
Iver Johnson is most often associated with the HERCULES trade name. email@example.com *If that statement marked on the gun actually says "barrel and lug forged in one piece" it is a Stevens. If it says "barrel and lug forged in one" (exactly the same except no "piece") it is by Iver Johnson Arms and Cycle Works.
Yes, I have a 12 gauge choke bore barrel & lug forged in one by Iver Johnsons Arms & Cycle Works. Champion is clearly listed on the shotgun and it was manufactured in Fitchburg, MASS USA.
A shotgun barrel with a cylinder bore choke.
yes a rifled shotgun barrel or smooth shotgun barrel
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