I picked up one of these from an ad before the LGR came into effect, and still have it. It's a bit fussy on ammo, and needs to be pretty much dry to cycle properly, as mentioned. (I've even had Eley Target and subsonic cycle fine when clean and dry) I have also found that some of the newer production mags do not work so well - feed ramp issues.
Mine shoots and groups very well at 25m, not so good at 50, and forget about it at 100. My stock was touching the barrel near the front, so I fixed that, but still problems beyond 50m.