Not really. But could have failed.
I had a friend that killed themself via shotgun.
However by account of their sibling who was in another part of the house. A first shot was heard, by time they ran and reached the room a second shot occured. She realized what happened and did not enter and called emergency services.
What was left of the head suggested the first shot was a flinch that blew off the side of his face. He then finished it with a second shot. Seems like he had the barrel in his mouth, but the flinch shifted his aim to the side. Second shot was between the eyes. So not much head left.
There was maybe 10 seconds between the two shots. 10 seconds of agony I would presume. Had he not been able to pull off the second shot, he probably would have survived minus a chunk of his face.
Firearms are a high success rate, but its still possible to screw up.
It would still be my choice if I could get one..