I had a male dog that easily had 1,000+ hogs under his belt when I sold him. I have a gyp now that probably has 2,000+ hogs under her belt. That is in a life time of course. Its really not that hard. When we hunted steady we killed 300+ hogs per year. The gyp is around 10yrs old now.
Old dogs with those kinds of numbers will spoil you. When they take a trail there are no ifs, ands, or buts...