ORIGINAL: pdwads
LARGE SNIP.............
Also slugs are able to be fired from a full choke because they have rifled groves.,and the rifled groves are designed especially for that purpose.
Phil
Rifled grooves on slugs are purely cosmetic. The slugs stability is because the weight being in the front of the slug. It operates on that principle; as does a badmitton shuttle cock/birdie. If you mike rifled slugs (Foster type) they are almost always undersized to slide through the tighest of chokes. Brennekes® are the exception.