I believe Norma added it to their line in 1999 so it is fairly "new" (no longer a wildcat). As far as factory rifles, I do not know of any here in North America but maybe there is a European manufacturer that chambers it. You can look for a 284 and rebarrel it or find a short action with a .473 bolt face and do the same. Since it has a rebated rim and the case is "fatter", maybe there has to be a little tweeking if converting a 7mm mauser etc. I'm sure someone here will have the answer.