This was posted on the SSBB by becassier. I though it of interest.
"becassier
Post subject: Stampings on M21 BreechPosted: Fri Feb 22, 2008 10:27 pm
Joined: Sat Feb 07, 2004 6:17 pm
Posts: 11
Location: Texas
While cleaning my M21's I noticed some stampings on the breech end of the barrels on the area covered by the ejectors. Across the area where the barrels are joined together, there are the numbers 754 with the letter "A"at the 7:30 position on the right barrel on my 16 Ga.
On the 12 Ga., 751 is stamped on the area where the barrels are joined together, with the letter "P" at the 6:00 position on the right barrel.
Can't find any mention of these in Schwing's book. Can anyone shed any light on these markings
Thanks"
I made this reply: "
"My 16ga Model 21 Skeet Grade has the #382 stamped between the barrels, under the ejectors, and the letter "P" at 7:00 position of the right barrel.
I don't have any clue of their meaning. The might be barrel assemblers stamps?
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Ole Cowboy