The brick column is centered on the wooden posts and the map suggests they were centered on the 13 foot mark; the brick column is a lot wider than the posts, so a foot-foot wide brick column will get its south edge to the 15 foot mark.
No, the wooden posts ( pillars) were not centered on the 13 foot mark the south side of those post were on the thirteen foot mark....
Rightly-or-wrongly, the map (which is the only thing I have to go by) shows the majority of the wooden posts (that go east-to-west from the rifle location) centered on the 13-foot mark from the north wall. Maybe someone at the museum could go measure it.
The arrowed boxes above are not where the rifle was located, but they appear to be a bit south of the box by the wooden post. The tall stack (it has the label "Looking West" on it in the graphic above) was to the east of the rifle location and it seems to be further south of the box by the wooden post and maybe the arrowed boxes in between.
Where the rifle lay on the floor appears to be in the 15 to 15 1/2 foot range.
and the row of boxes were stacked in line with the south side of the post....
Sort of. But the row of boxes veered towards the southwest. The box that is beside the wooden post is not even in line with the south side of the post. There's a gap.
the boxes were about 16 inches X 12 inches....( see the box at the base of the brick column which is two and a half bricks across and use the bricks as a scale.) so 13 feet plus 1 foot 4 inches puts the south edge of the boxes at 14 foot 4 inches. this is where the DPD placed the rifle to stage the phony in situ photo.......then there is a box which is 12 inches across and then the pallet on the floor....THAT is where the rifle was laying on the floor when Boone discovered it....
There a box (which I labelled "E") that's as long as those in the tall stack. It seem to be short in DP #12 because of perspective.
So Boone thought the rifle was underneath a pallet?