Miroku gun. 1977. Fixed chokes were converted to thin wall tubes. Nice job too. 30" bbls remain 30". .726 bores. Problem is, the chokes start around 4" from the muzzels and at the beginning of the tubes the bore is .708. Consequently I've got a mod/mod gun. I'd like to ream the bore to take that fixed coke out but I'm getting mixed information as to the bores. Some say chrome lined bores, some say only chrome lined chambers. Anyone know? And when I say 'I'm getting mixed information' I'm talking about the folks that are supposed to know. I've tried bluing the bores to see if it takes but its just too hard to see.