.45 ACP is a low pressure round with very little cold-working of the brass (taper crimp only). It should withstand may reloading, half a dozen at least.

That said, I lose 25% or more of my brass each time I shoot indoors, and 100% when shooting outdoors. In other words, mine doesn't stay around long enough to keep count.

That may change now that I have a 625 revolver. Now all I need is time to go shooting.