In my first p osting I stated the classic, original shotgun slugs would shoot fine in any choke, or something to that effect.
The key wording was the original, classic slugs. These were made like pellets for a pellet gun, with a thin lead skirt at the rear. Pressure held the skirt out for tight fit to the barrel, but the thin lead skirt would go through any choke without harming the choke.
I have no idea what newer slugs are built like, but those built like a pellet will not harm a choke.
As a point of interest, they sometimes had angled grooves on the sides, called rifled slugs and making the user think they would spin in flight. This was a joke, as they did not spin, but the lump of lead on the front and the light skirt at the rear, kept them stable in flight. Just like a pellet.