Agreed. I have no issue with the 5.56 out to 300. I have a 1:7 twist so if I reload the 68 or 73 gr. bullets I can push that to 400 if it's not too windy.You can still find a few guys shooting high power with bolt guns. Some are high masters.
Frankly, at 200 yards, the difference between a 10 from a bolt gun and a 9 from a semi-auto is . . . you're still dead.