Mc,
Yes it can matter depending on the amount of dent that is in the bore.
There are bore "dent" removers for shotguns,
Not common among most gunsmiths, unless they deal with a lot of shot gunners. It can be an expensive set-up, considering the number of gages.
Check around for smiths that can do this kind of "dent pulling/dent removal", and see what they can say?
My best,
Blair