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If anyone has an answer I'd like to know too. I inherited a New Haven .410 bolt action model 283B. I don't know the difference between the 283TB and the 283B so please share that information if you know it. Thanks! The difference between a 283TB and a 283B is that the 283TB is a .410 and a 30.6 too.
28 is bigger. .550 vs .410
No sn data
They are the same. Mossberg 500 series includes all shotguns. 500A is 12gauge. 500E is 410.
The models 238 and 238A werw made some time between 1959 and 1968. I can not find information on the 238TB but it looks like they stopped making the .410 bolt in 1968.
No published sn data.
No such weapon.
Size of the bore. 12 gauge is bigger.
About 100 USD depending on condition.
50-100 USD or so
Try egunparts
I have one made by O.F. MOSSBERG & SONS INC. New Haven CONN. U.S.A. NO.83B 410 GA - 3 IN PROOF TESTED