The rifle as it would be resting on the trigger-guard-housing in the crease. Maybe the left hand could pin the top of the rifle but not such that the scope was blocked.
I did not expect it to be almost working for the head shot. The Carcano rifle in this model may not clear the edge of the carton (Box A) because my model is inaccurate. I would not dismiss the possibility based on this model. A real-life Carcano and box replica may work.
For both shots, the Carcano clears the box resting on the window sill.
https://ibb.co/Fqm637BThese drawings are ludicrous....They reveal a desperate attempt to make the official scenario believable. Referring to the first drawing .... The fore grip of the rifle is not sitting on the box...it appears to be sunk into the cardboard of the box...This needed to be done to allow the trigger guard / Magazine to contact the top of the box.
The distance from the trigger to the butt plate of a carcano is 13 inches..... Which means that a shooter sitting on a box to the rear and holding this rifle would be leaning forward and his chest would be nearly touching the box and his shoulder would be about 30 inches from the floor.... but the rile butt would be about 38 inches from the floor ( IOW the rifle butt would be above the man's shoulder. And he could not place his left hand beneath the fore grip of the rifle.)
I don't know why I bothered to respond to such a ridiculous post.....