I've had this issue on a couple 85s. I sold the first (270wsm). The other is a 85 Finnlight in 30-06. I called Accuflite and was told to soak the bolt in degreaser and work the extractor while flooded with degreaser. Lubed well after with Remoil. It now works so well I've been able to use the low ring mounts with no cases hitting. I think it was old sticky assembly lube causing problems in that gun.

Continued contact with Beretta will only prolong misery Shootem. Best of luck.