Lead is softer than steel, how could just 50 slugs change the constriction of the choke?
Pattern your modified choke with birdshot. Shoot 50 slugs through the modified choke. Pattern it again with bird shot. Bet it isn't modified anymore.
We have shot slugs threw full choke guns for many many years .we had to use one shotgun for every thing .geese in October and deer in December. Slugs will not harm a full choke in a modern shotgun.
As long as it's the lead "rifled" slugs it shouldn't do any damage, the "rifling" is just and area of less material to let it deform and pass through chokes without harming them.
Now if you got into shooting a sabot slug, or something a little more solid I bet you would get into a different situation.
Does that include rifled foster slugs? I know the rifling doesn't provide a spin but aren't they stable to a certain range in smooth bore shotguns?
Take a rifled slug round apart and remove the slug. Take the slug and drop it in the barrel. It will probably drop right through the full choked barrel. The slugs are hollow and made of very soft lead (pure lead) and in no way should harm a modern steel barrel. Just my .02



























