RE: REGULAR SLUGS OR RIFLED SLUGS
Fletch,
They will not hurt the rifleing, but will start to fill it with lead which will decrease accuracy. I've seen some rifled barrels shoot winchester super-X rifled slugs quite well. I have also seen a remington 870 rifled barrel throw slugs 6" apart at 50 yards using winchester super-X rifled slugs. It will not ruin the barrel, but defeats the purpose of having a rifled barrel.
KJ