Some I've shot were fairly accurate, mostly the longer-chambered varieties (.30-06 length) but none can hold a candle to a BAR in accuracy, nor fit/finish either.
What's a more bothering issue with the Remington auto's, than accuracy specifics, however, is their apparent failure to hold zero, year to year.
I was rangemaster, at my gun club for 15 years, and for every one of those years the club conducted a well advertized "Public Sighting-in Day".
It was apparent, after a few such sessions, that the shooters having the most trouble zeroing new guns, and having to re-zero previously zeroed guns, were shooting a Remington 742 and/or 7400/Mod 4.