PP, some of those 7.62x51 conversions were really bad. It gave the rifle a bad name it didn't deserve. I was lucky when I had mine. The chamber in it was smooth as glass. Some were rough and ringed badly, causing extraction problems.
It was extremely reliable, under all conditions and was accurate to boot. It was shorter and lighter than a Garand as well.
The Mas49-56 only has one flaw. It suffers from a lack of factory ammunition. Yes, reload. That is an effort in futility, if you frequent a range that won't let you police your own brass, as some commercial ranges are prone to do.
I liked mine a lot. Before registration days, I sold it to a fellow that liked it a lot more than I did. Not surprising, He carried one, while he was in the French armed service for many years. When they replaced it, he never really liked the replacement rifle. To awkward and he didn't like the action sounds in his ear.