I have a rifle that cost less than $1500.00 that is way capable of keeping them inside the X ring at 1000 yds with or with a scope. A 1000 yd target is 42 inchs across on the black center.
It's great to have a target the size of a smart car but to me in a "real world application" that is pointless. There is no animal with a humane kill zone 4' in diam that walks the face of the earth. Swimming beneath the surface maybe, I need to brush up on whale kill zone sizes...