Per your image, the barrel is round (77 pixel circle) and is riding low in the opening for the slide. If you lift the barrel up slightly, it will center in the hole. The optical illusion is due to two circles not being centered and a slide that isn't perfectly square.
I can't really see an issue. If it shoots fine, and functions fine, sleep well.
I'm talking about the inside of the barrel ( lands and grooves) not its relation to the slide
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Hello, Just picked up this 9mm shield and noticed while cleaning (haven't shot it yet) that while looking at the muzzle of the barrel it seems out of shape or not round. None of my other handguns from any manufacturer (including Smith) look like this.