Since my first post I was talking about this possible slide crack which I can't think how the factory recoil spring assembly can cause:
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The gouge marks are neglegible and cosmetic for the most part. If Taurus beef up the whole zone under the muzzle hole by one millimeter in the inside direction, reducing the frame buffer zone by that same millimeter and shortening the recoil spring assembly by one millimeter, I don't see how the cracks could ocurr again.
Even simpler is to beef up the parts in the outside direction without changing anything internal, but then Taurus have to lengthen the barrel to match the lengthen of the slide.
Infact I can't see how a TX-22 Competition slide could crack in that area, gouge marks or not.