If your looking for the most inexpensive way. You can go to Wal-mart and get a Maverick made by Mossberg 12 guage pump. $169.00 Perfect for small game and target loads for clays.
For Deer, I use the improved choke that comes with it and by rifled slugs for Deer or 00Buck. I like the slugs. pretty acurate. no problem at 50 yards. can hit paper at 100 with no scope.