I think it might have been Bob Milek that said:
And I am paraphrasing, and it might not have been Bob Milek, but another gun writer:
Don't use a gun that will kill your quarry when everything goes right, use a gun that will kill your quarry when everything goes wrong.
Generally: There is a lot of truth in that statement.
Experienced hunters and riflemen know that especially under field conditions when shooting at game, things don't always go according to the plan.
Here is another very general statement:
"Most hunters overestimate their shooting prowess." 99Guy said that.