The Baikals are very good guns for the money and are strong enough to make large case black/smokeless powder rifles with - within reason, of course.
; The Stoeger looks OK, but I prefer splinter forends.
; Try your slugs and shoot them off a bench holding the gun as if you were shooting offhand.
; A rear sight is a great help and it's dovetail can easily be cut and filed into the rib. You can get various sizes in Marbles or Williams rear sights as well as front sights, but if it shoots well with some make of slugs (or handloaded round balls) I'd be thinking in terms of a 1 leaf rear sight. The Point blank sight for out to 50 yards and the leaf for 100 - depending on how it shoots, of course.
; After thinking about this answer and my own shooting with balls in a 12, only one sight is necessary. With an initial speed of 1,500 to 1,550fps, the 12 bore ball has a point blank range of nearly 120yards, which is past it's normal effective range or 'around' 100 yards.