Myself, my wife and a son have taken 6 Dall sheep between us. One (son's ewe) was about 200, one ram of mine about 330 - both with 17 inch bbl 30-06.
My first was @ 50 feet wth .243 Rest were less than 100.
My wife could have taken her ram at 70 yards with BP, open sights, as planned.
If I had brought the Pyrodex.
She had to use the .270....