Buddy of mine’s been a gunsmith 40 some odd years and the Model 12 is the gun he’s always been obsessed with. He’s probably got 25 or 30 Model 12s of his own. He turkey hunts a Model 12 that he’s extended the chambering to 3” and threaded the barrel for modern chokes. We’ve shot TSS through his. But I asked him your question and he said, “Don't think it would ever be a problem. I've shot a pile of steel through one of my 12s. Them old nickel steel barrels are damn tough. I ain't never even seen a model 12 with a dent in the barrel.”
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