Is a sears model 3T the same as a Winchester model 190?

No, a Sears Model 3T is not the same as a Winchester Model 190. The Sears Model 3T is a branded version of a rifle made by another manufacturer, often associated with the Ted Williams line, while the Winchester Model 190 is a distinct semi-automatic .22 caliber rifle produced by Winchester. Although they may share some similarities in design or function, they are separate models with different specifications and manufacturing histories.