As long as the wife does not see more than one at a time, you don't have to explain any beyond the first of them. I think my wife believes that I have maybe two or three bolt action rifles and that's only because two are mounted in a rack above the TV. To her, they all look alike. I bet my son that my wife would not notice when the rifles changed, so we started swapping out Mosins, Marlins, SkSs, Mausers and a 10/22 for a couple of weeks and she never said a word. I really think she would only notice if I swapped in an AR.