I was wondering if a 16 Ga model 24 Winchester is on a 12 ga or 20 gaframe.I need a 16 ga like I need a whole in the head.The 16 ga get mexed up with 12 ga too easy.thats why I wont get a 28 ga to get mixed up with 20 ga.Its easy to do.Its a nice shotgun about 70% for fairly cheap $350 so I was just wondering.