Reload the brass from the factory barrel and shoot it in the factory barrel. When sorting throw out any big bulges and keep the rest. It isn't 1/1000th as big a deal as it is made out to be.
If it makes you feel better just throw it out after 2 or 3 loadings, 40 brass is nearly free anyway. The only reason for an aftermarket barrel is for shooting lead bullets or trying to get the Nth degree of accuracy out of a Glock.