As I said in the earlier post. The term stronger is realative. Yes the boxlock stock head is stronger but the sidelock guns are strong enough. As has been said I'm sure Searcy wouldn't market it if he had problems with them.

The back action sidelocks usually allow the wrist and the entire gun to be thinner and thus usually lighter. No cutouts need to be made into the sides of the receiver so that can be thinner and then that allows the wrist to be thinner, thus reducing some weight.

Back Action Locks

Sidelocks

Now keep in mind these are both hammer guns. It's just the quickest pics I could find.

BB