Free: Contests & Raffles.
If it is a dominance thing with your other younger pups than maybe finding him a home with no other dogs would work. Does he hunt and how is he with other dogs in the field? Did this behavior start after you got the new pups?
Not neutered is he? If he was mine and I liked him he would be cut. If he already is then he has to go before someone really gets hurt.
The reason there are so many Ruger upgrades is because they're necessary.