RE: H&R Slug guns...
Well Mat I can tell you you should not be disappointed at all. I shoot the 12 gauge deluxe and one of my sons shoots a 20 gauge standard. These are indeed very accurate slug guns. My 12 guage appreciates a steady diet of 3-inch Brenneke Gold Magnums and 2-3/4-inch Brenneke Heavy Field Magnums, and my boy's 20 gauge does excellent with Remington Copper Solids.
Uncle Matt (in IL)