Pete50,
You are probably talking about Jerry's, a distributor up in PA. My smith in NC. deals with them all the time. He passes on the good prices to me as well. They have a lot of hard to find specialty stuff as well. The bad news is, I think you have to be a dealer to buy from them. I did find their website once and that is what I gathered from it. If that doesn't work some of the GBO sponsors have good prices as well.
A friend at work, hunts with a guy that has one. From what I hear it is a shooter. I personally have no experience with the .45 Knights. Always shot the 50's.
Good luck in your search,
Stan