That is some serious damage. Several years ago I had a cartridge failure on a 7mag it blew the primer pocket and 1/3 of the case head. Stock was in 3 pieces, floor plate blown off, follower and part of spring on the bench between my hands. Damaged the bolt and jambed the action. Someone told me I had a bad day and I had to correct them as it was a very good day because I survived, same with the person who survived this catastrophe.