fixed chokes seem to handel anything that goes through them. However, interchangeble chokes dont. Call the gun manufacturer and ask them if its not in the manuel. I wouldnt do it just to be safe. I put a slug through the modified choke in my mossberg 20 ga and now I cant get the choke out. The gun still shoots ok but I think the slug damaged the choke threads a little.
Most full gauge dia slugs are foster style. The rifleing on them does very little actually. The shoot the way they do mostly because they are heavy in the front, and light in the rear. Sort of like a badmitten birdy.