somebody better tell my glock barrels that they have over 1k fmj's through them so they must be shot out! Hurry!
Seriously, did he have any substantiating information or just that he heard?
Why don't you do a test yourself, shoot 1k rounds of fmj through your Taurus, if no ill effects you're good, if ill effects send it back and they replace it.
Sounds like win-win to me.