a dogs range

I think it has to do with the region AND what the dog is bred for, they go hand in hand. I hunted all last year in Freer, Texas (deep south) (smallest ranch 7,000 acres, biggest over a 100,000) and it was common for my friend's dog to be a few miles out on the Garmin (out over 6 miles before). I bought that dog and hunting up here closer to San Antonio on areas around 1,000 acres he'll go out about 900 yards (still far but not as far as he used to). Last week we went down towards Corpus on 18,000 acres of grain and he seemed to open up more (went out about a mile and a half) Maybe he hasn't opened up so much here near San Antonio because we've been catching hogs at about 500-800 yards, maybe it's all the net fence, hot fences, etc. around the grain up here.
It is somewhat hard to hunt with him because my other dogs will only follow him out a few hundred yards if he's not baying.