Hello to all--as there are several threads about turkey guns here I thought I would pass along my experience. 
  I have the 12ga.,3 1/2', with screw in chokes and the synthetic stock.  With 3" #5 Winchester Supremes I can shoot a pattern at 15yds. that I can drop a golf ball thru and it holds tight out to 40yds. or so.
  However, my gun wouldn't pattern to POA, what I did was use a set of fiber optic sights bought for a muzzleloading project that never happened.  Removed front bead, marked an area for front and rear bases,  removed blueing with emery paper , stippled area with auto center punch  and mounted with JB Weld.  Taken the recoil of the 3' so far.
  Filled buttstock with shot and it works for me. Good hunting--woodsrunner