IF you can group your arrows at 40 yards, the 10-15-20 yard shots should be a no-brainer!
That is assuming that someone has brains. However, in my case, I, at times find that I can get better groups out further for some reason. I think it is because I know what it takes to get a great group (maybe 2-2 1/2 inches) at 30 yards with broadheads, so my form is right on. But then try to make that little chip shot and the groups are not as good as they should be. I mentally have to treat each shot as if I was shooting 30-40 yards. And not take any shot for granted.