I really hate to do this I am sure I will be talked about so badly..I just mostly read on here.. I do have a twist atleast....But twisted there is no way that nail went thru 2 2x4's and then into your hand..The paper is still on the nail..I have been in construction for about 10 years now..I have saw my share of nails in things..Fingers,legs,arms.. I have saw it all..Never have I saw a gun shoot a nail thru 2 2x4's and keep the paper on it like that...Judging by the paper on the nail and the full round head it was shot out of a knock off paslode nail gun..Which the most PSI you put into that is 100 at the most..85 to 90 for normal work..So at 100 PSI that will just sink the head of the nail real good into the first one..And before any of you say I am lying I just pulled out my bostitch nailer, Shooting a 12 d nail..which is 2 3/8" long and cranked the air up to 102.."Hated to push it any farther" And just sank the head of it in..110 PSI will blow the seals out..
Sorry to make anyone mad..