Good shooting!! I am surprised at the lack of damage to what looks to me mild steel plate and at 700 yards. I have shot mild steel with many 7's and see holes go clean through 1/2" steel with a 180 from a 7-300 win. I know the 300 based case has more velocity but I would have at least expected a crater or dent. Not knocking anything just saying what I was thinking. Now tell me this is AR 500 steel and I will be happy.
Good job with a fine shooter, gun)