Safariman,
The cartridge you propose, the .22/204, was the first thought in my head when I heard of the .204.
Sounds like a winner to me. Available, excellent cases. Easy to form with a Redding tapered expanding plug. What's not to like?
Performance would be quite similar to the .223 Ackley, maybe slightly hotter. And it would not surprise me if major firearms industry mover and shaker doesn't have the cartridge in the hopper right now. No, I haven't heard a rumor, but these guys should know a good thing, especially shen it is SO natural.
Steve
