Maybe it's more common that I realize, but I simply don't see much mention of 22 magnum whether we are talking rifle or handgun, self defense or hunting small game. I see TONS of discussion involving 22LR, and plenty of guns that are advertised for 22LR, just not much in the way of 22magnum. I would think it would be more popular and effective than 22LR. I've seen a few guns that fire the 22 magnum, especially in revolvers. Just not many.