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June 17, 2012, 11:35 AM | #1 |
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Rem 870 Barrel Marking "CB"
I have an older 870 Wingmaster with a vent rib barrel. It is a fixed choke and I was looking at the barrel to see what choke it was. It is marked, "CB". What does this mean?
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June 17, 2012, 11:39 AM | #2 |
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Guessing
Ah, Cyliner-Bore ??
I say this becaues I have seen "FULL" and "MOD". I have never seen nor read one that said "CB" ...... Be Safe !!!
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June 17, 2012, 11:45 AM | #3 |
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Date code? I depends where the mark is located. C is for April and there's a 26 year cycle in year codes. Might be for April 1955, 1981 or 2007.
Isn't cylinder bore usually abbreviated CYL? |
June 17, 2012, 12:09 PM | #4 |
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It means you are not looking at the choke marking.
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June 17, 2012, 01:13 PM | #5 |
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Pahoo and zippy13,
I didn't think it was cylinder bore, since as zippy said, others I've had said "CYL". I don't see any "MOD", "FULL", "IC" (or, even M, F, IMP) or anything else like I'm accustomed to seeing. I've had a lot of Remingtons and barrels and am perplexed by this one. As for date code, I'll have to look at it again. It measure 25.5" in length. The receiver is a "V" Wingmaster receiver and it has the old lifter (pre Flex-Tab). Thanks |
June 17, 2012, 01:19 PM | #6 | |
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Sounds Good !!
Quote:
Be Safe !!!
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June 17, 2012, 01:24 PM | #7 |
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I'm not up on the history of 870s; but, I have two barrels for my trap 1100: The original one is marked full and the second one, with screw-ins, is unmarked. Perhaps your gun had an adjustable choke (thus unmarked) and it's had the barrel shortened.
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June 18, 2012, 06:20 AM | #8 | |
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Quote:
Just a guess here but I'm thinking they make all of them to 30"-32" to start then cut them down to whatever final length they want before threading for choke tubes. In order to use the same vent rib on all models they have cut the barrel so that the closest vent rib post matches the end of the barrel. |
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June 18, 2012, 09:49 AM | #9 | |
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Quote:
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June 19, 2012, 12:33 AM | #10 |
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Well, mystery solved. I got out a magnifying glass and found, "IMP CYL" lightly stamped on the barrel. It was much lighter than the rest of the stampings. My middle aged eyes!
Thanks for the help, guys! Best. |
June 19, 2012, 10:05 AM | #11 |
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FWIW, a "CB", stamped into the left/rear of a Remington 870 bbl is the Remington Letter Date Code for April, 1981 - it's DOM.
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June 19, 2012, 11:55 AM | #12 |
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Thanks, PetahW. Did Remington use the Flex-Tab lifter in 1981? I'm curious if this could possibly be the original barrel.
Thanks. |
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