I have a Mossberg 500 with tactical light, pistol grip and buttstock shell holder. I also have a .45 auto and a S&W 686 Plus 7 shot. Oh yeah, and my wife's J-Frame .38 +p. I was considering getting a mid range rifle; I don't think I need one that'll hit out to 600 yds.(or do I?) but something that'll hit out farther than my Mossy. Do I need a rifle or should I save my $ and start socking away ammo for the guns I already have? Gimme some thoughts.