hi old frog, I hope you have a great Christmas time. I looked at the…

hi old frog, I hope you have a great Christmas time. I looked at the website for the double barrel derringers. i'm not a gun owner. (have had a couple of hand guns 25+ yrs ago.) I know virtually nothing about them. so I wonder, about the useful life of a gun? meaning, how many rounds does it take during its usable life? therefor, can you practice with a derri8nger and not quickly degrade it's capabilities? dancin' dan