Planted?
LOL!
-- MWT 
Yes, that's right....The carcano was PLANTED...... It was NOT hastily cast aside or jammed between boxes of books. Weitzman and Boone discovered the carcano it was LYING ON THE FLOOR with the pallet of books on top of it.....The pallet of books was about one foot south of the south side of the boxes that formed the east/ waest aisle at the top of the stairs. And there were a couple of boxes of books that formed the top of the chasm in which the rifle had been CAREFULLY HIDDEN.
Nobody touched the rifle until Detective Day arrived with Captain Fritz and took charge....Then the boxes of books were moved out of the way and Lt Day reached down and grabbed the leather strap and picked the carcano UP FROM THE FLOOR. ( not jammed between boxes of books) Tom alyea filmed Day as he picked the carcano up from the floor.
Roger Craig was there and he described how he saw the rifle just minutes after Boone had called out.."here's the rifle". Craig said that the rifle was lying on the floor at the bottom of a chacm of boxes . He said that he was six feet tall and he could not have place the rifle down in the cave unless he got down among the boxes and the restacked then after placing the rifle on the floor. Craig said that the muzzle of rifle was pointed east with the trigger guard to the south and the scope to the north ....
Craig was absolutely right....That's exactly the orientation of the rifle when Day picked it up OFF THE FLOOR.