Sounds like he had a M1 garand 8 shots,and didn't bring more,or an M1A !
Who knows what he had but most hunters use a little bigger gun than needed,just so this doesn't happen!
And letting the animal get down and die is when you are sure of your shot!
Not when you shoot 8 shots and think 4 may have hit!
You should school this person,or get as far away as you can from him!
Bob