I want to get into clay shooting and would like to buy an entry level (inexpensive) semi-auto shotgun.  I'm thinking a Mossberg 930, Weatherby SA-08 or Remington V3.  Since I have never shot clays before, I don't want to spend $1,000+ on a shotgun right off the bat.
I would also like the option of easily swapping to a shorter barrel for possible turkey and/or deer hunting.  This is where the problem with the V3 and SA-08 comes in.  Replacement barrels seem to be hard to come by, while Mossbergs are readily available.
Anyone have any advice?  Are there any other shotguns in this price range that I should be looking at?
			
