Properly taken care of, a barrel will easily last many thousands of rounds. Given the low velocities, a pistol barrel will probably never wear out, especially a chrome lined one like the Storm has. The gun writer Chuck Taylor supposedly has a Glock 17 with over 300,000 rounds documented through it. Anyhow at the thousand round mark your Beretta is still just a baby
I've not heard of barrel wear really becoming a problem except in high velocity varmint and target rifles. Some of those can push bullets over 4,000 fps. To get that sort of velocity you're usually looking at a fat case necked down to a much smaller bullet. It's an arrangement called overbore and can cause erosion in the first section of the barrel due to such a comparatively large amount of burning powder in a small caliber bore. But most of those guys are serious rifle shooters who expect to wear out barrels anyway.
I think if we actually made a point of trying, we would wear out before the gun would.