If so then not by much. I’d be interested to see the x-ray.
http://abcnews.go.com/US/man-drives-hospital-nail-pierces-heart/story?id=49225318&cid=clicksource_4380645_8_comic_strip_sq_hed
Yes, I’d bet just the tip touched the heart itself, especially if the nail only penetrated two inches total.