I beleve the indian casinos in Oklahoma are pulling 10 count cards from the continous shuffel machines. These casinos are not regulated. The state just collects the revinue and is not going to harm the cash cow. Iam sure it is happing in other casinos in the US.
I've been to the Grand Lake Casino in Grove, OK, twice. I arrived both times before the tables opened, and on both occasions, rather than crack open new decks, etc., the pit boss opened a cabinet and pulled out an already-loaded shoe.
I've never seen this done anywhere else; and I lost heavily. Honestly, it's possible that my losses were due to normal fluctuation; but I'm not taking unnecessary chances. I haven't been back.