If it's a factory fitted barrel, I'd send it in for replacement, but if you have an ejector barrel now, it will come back with an extractor barrel, as will the accessory barrels you order.
I have forty-two H&Rs, all but 7 are centerfire rifles, none have the problems you speak of, so I'd say it's not common, and don't recall any being that bad, if it was, H&R would have replaced it, their CS is top notch.
Tim