My 28 ga. repo was doubling quite often so I contacted Larry Delgrego and talked with him about it. He said that he had repaired hundreds of them with the same problem. His shop is within 40 minutes of me, so I met him there and he immediately knew what the problem was. Long story short, he had to anneal the sears, recut them and reharden them a few times while test shooting a few boxes of shells until they were correct. No problem since, just my experience!
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