L, I would test the IHC at the range to see how accurate she is. If it "keyholes", then I would replace the barrel but hold on to it until you find a replacement LMR barrel close to 7-53. A nonimport marked barrel will add to the resale value by an estimated $50 to $200 IMHO. Is the stock IHC with that slight indentation on the right side by the receiver heal? Is there a legitimate four digit date stamp (e.g. 7223) stamped inside the barrel channel? Do the front sight ears measure 7/8" apart? Since you want a shooter, I'd replace an inaccurate IHC barrel but hold on to it possibly to sell later as a collector item. Restorers will restore rare collectibles. HTH Thomas