I just aquired a Remington 1187 premier with what to appears to be a 21" barrel with rifle sights. It has what looks like a full choke in the barrel and the barrel itself is not rifled. I did some looking and it could be a rifle sighted deer barrel but not sure. Anyone that knows I would like to know as well lol. My question is I would like to change the barrel to a vent rib barrel preferrably 28" with beads would there be any issues doing so? I keep hearing different stories. Like I need to watch out for barels that have an LC or LT marking not sure which due to barrel diameter not fitting the forend correctly. Any help would be greatly appreciated. Thanks