Can a light twelve browning shotgun shot a slug with a cutts choke device.?

I believe that it can, however a full choke is not reccomended. Also certain slugs and loads should not be used. otherwise you could see your cutts tube ripped off the muzzle and sent hurling downrange.

Best advice is to contact Lyman with your particular needs for a slug (application such as Deer Hunting / range desired etc.) Lyman still makes Cutts Compensators and choke tubes. They can recommend the brand or slug type and load for shooting in your Browning cutts shotgun.