I've seen enough of them that have landed on these shores, had a quicky chamber lenthening (or, not) been cut loose in the foothills with 'bubba, or his brother, with a bunch of hot SAAMI spec ammunition, and are now suffering off the face, bulged tubes, weakened or broken stock, screws out of time, smashed pads, and on and on.
Its only been in recent years that one could procur, commercially, the correct ammunition for a century old Brit gun here, and has been even less time for regular folk to learn there is a difference. Or, that the same guns should be vetted somewhat regularly.
The damage has been done. The simple fact is that for typical, American, rough shooting use, there always were and are better tools.

Best,
Ted