It sounds like you are looking at information on the Favorite's, which are swinging block actions. There is a modern version of that action called the Crack Shot but it has nothing to do with the older ones and the use of the name again causes some confusion. Here is a video of a Steven's No 26 Crack Shot that says it's a version of a Favorite - which it is not - the two not all the similar as he says; https://www.youtube.com/watch?v=PtJsXiYusiM The No 26 is a much simpler and weaker action than the Favorites.
A better place to ask about older single shot Savage & Stevens would be RimFireCentral in the Savage/Stevens forum.
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