That talldog sounds like alot of work to make cases for. I am thinking that is another Dan Dowling invention, just by the sound of the name. He came up with the waldog, a shortened 22 ppc.
I am 100% positive on my next rifle in what it will be chambered in. I'm raising funds to build a 6mm Dasher, and was hoping to have Dan do the work. I've heard so much good about this cartridge. Anyways, we have some non-registered 1000 yard benchrest matches here everymonth. Also some nearby F-class matches. I really want to get into this long range competition stuff. I know how addicting it is.