Re: 6.5x284 for Mountain goat?
I have taken 2 goats here in Montana and have been on twice that many other goat hunts. A 6.5 X 284 is a perfect goat round in my opinion. Use a quality bullet and put it in the right place and you'll be a happy camper.
Use a .458 and hit em in the guts and they'll go over the biggest ledge on the mountain.