Harry Callahan (Clint Eastwood ... beginning with 1971's "Dirty Harry," the titular lawman uses the revolver to take down serial killers, terrorists, corrupt cops, and gang members.

For one, Nancy Callahan's surname is an obvious nod to Harry. But more importantly ... especially his use the Smith and ...

Eastwood's character also helped popularize the .44 Magnum, as Harry Callahan is famously shown wielding his Smith & Wesson Model 29 revolver.

Eastwood's character also helped popularize the .44 Magnum, as Harry Callahan is famously shown wielding his Smith & Wesson Model 29 revolver.