I would check out Jim See Center Shot Rifles (Pittsville, WI)
. He is an advertiser here. More central WI than South central but you won't go wrong with him. I am from Edgerton, so I know the area a little. He is the only one close that is a member here that I know of.
There are some others around I could tell you about, but no one tuned to the accurate rifle like Jim.