Range is how far one hunts looking for a track/hog.
Bottom is how long one sticks with it before quitting. Either grinding out the track, or sticking with a hog after it breaks.
A dog that hunts out a hundred yards, finds a hog, bays it a minute, then it breaks and the dog comes back 15 minutes later... To me that's a short range dog, without much bottom. Something you may want if you have small acreage.
A dog that finds a hog, then the bay breaks, and 3 hours and 7 miles later you find them bayed. That's a dog with bottom.
x2...in the old days we called it stick or sticking to the track no matter what...I like a dog that will stick until he bays a hog at the other end of those track...