I would buy a designated rifled tube if you were planning on being accurate with it.
Actually these tubes are for "sabot" slugs. The expensive stuff.
For "rifled" slugs, you are safe up to and including full.
This may not be true with some of the harder alloys but for the cheapest slugs that are dead soft lead you are good.
You might suffer problems by using "extra full" or some of the tighter than full turkey chokes.