I used them last year. A good cartridge not too punchy, good breaks but left plastic in the bores. It only seems to be a problem with Blaser Shot guns, other shooters with Browning, Beretta or Perazzi did´nt seem to have the same plastic bild up.
Too expensive, too punchy and difficult to find. There's many better shells out there for the same or less money. If you must go RC the 2 is a better bet.