You can shoot most guns quite a bit without showing a lot of wear on them provided you don't abuse them and you don't holster them. Sure, you'll get a turn ring and maybe a bit of muzzle burn on a revolver. Maybe the barrel hood on a semi-auto will show a bit of wear after you shoot it. But, unless it is an out of production gun with some collector interest, why the heck should you not shoot it? You'll be dead and gone when somebody takes that bright, shiny gun and puts 300 rounds through it the day you're buried.