I ve had some practics with a 44mag desert eagle and a 45 colt also a 9mm I have tryed to shoot hand guns for a while, off and on, ive shot a 357mag and a 454 or 450 somthing like that not sure but trust me hand guns dont get to much larger that the one im talking about. i dont have any use for a hand gun just not to practical for me :barf: , i do think my favorit is a u.s. army 45 with the clip on the handle for the belt, its to hold your gun on your side
anyways i would suggest u get a good rifle and sell your hand guns
m16 .223 is one hell of a rifle but its only open sight factory and its hard to shoot small targets at that range with the naked eyes, i do believe its possible to put a scope on one. (my friend practice make perfection)