Thread: 742 single shot
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Old December 28, 2017, 08:29 AM   #10
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Join Date: December 10, 2015
Posts: 249
I had one of these years ago and it began doing the same thing. A
Gunsmith determined the chamber had pitted which allows the case to expand into the pits. This causes the case to seize and the extractor pulls a chunk off the rim of the case. The only fix is a barrel replacement. I'm guessing they are extremely hard to find because this was a common issue with the 742. We tried to hone out the barrel but the indentions still hung up the shell. The only suggestion I have for you is to try the Winchester ballistic shells. The nickel cases sometimes work if the pitting is not too bad.

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