Hello, Madbadger. My wife has a custom Cadet in .222 Remington built by Dennis Erhardt (Sp?) from Montana. It uses the Snapp extractor, which is really slick. We bought another rimless extractor from Mr. Snapp at last years Custom Gunmakers Guild show in Reno, and were treated by him to tales of his own deer rifle, which is a 7mm-30 Waters. He had the barreled action, but for some reason, no stock with him. From his enthusiastic reports, I would think the 7mm-30 is just what you are looking for. In fact, when the new actions are available, it may be just what I am looking for.
Respectfully,
Ernie