Hey guys, my wife and I each have hand guns, mine is a Taurus .40 and hers is a Beretta .45. we only use these at the range and are really new to this. I have found some ammo that has aluminum cases… do I want that? I have also heard that you want FMJ ammo. Also I found a 40 pack of .40 at our local wally world for around $15-$18. Would these be ok for just target practice?