PW,
No need to disappear, all of us enjoy your input.
It's not the part that's left in the gun that's expensive, it's the part that leaves that's expensive. It is simply cheaper to reload the part that stays instead of throwing it away and buying new ammo.
That and picking up the empty catridges also. Other than being a nice person, there is not much use in picking up spent cartriges if you don't reload them.
BTW, Joe was only here for one day, he got das boot again. (prearranged, per Joe)
Have fun,
Phil
P.S. I was going to wish you a happy 4TH, but remembered you are from Canada. Have a nice day anyway.