Sentence:  “I know what you're thinking: 'Did he fire "six" shots or only "five?''' Well, to tell you the truth, in all this excitement, I've kinda lost track myself. But, being this is a .44 <WSD>magnum,</WSD> the most powerful handgun in the world, "and would blow your head clean off," you've got to ask yourself one question: 'Do I feel lucky?' Well, "Do" ya, punk?” 
Meaning of the word marked with <WSD> tags:  A handgun that fires a cartridge of this calibre; chiefly a revolver, but rarely an autoloader firing an unusually powerful calibre.