A friend of mine bought a new one a couple years ago. I brought it home stripped it down and gave it a good cleaning and lubricating. Next day we took it to the range to sight it in. This is where the problems started. Action didn't like to cycle all the time, and by that I mean the bolt wouldn't move at all on firing. The mag was a constant pain in the ass to get into the gun with cartridges in it, would go in fine empty though. A few stove pipes, fail to extract, one fail to fire... Total piece of #### imo. I would suggest looking for a Winchester Model 100 (Fantastic rifle) or a BAR.
Another guy showed up later on with the same 750 and he indicated that he had been having the same problems with his and just gotten it back from being worked on. Still didn't work properly.