40 Frame you already know about. Also Orleans has the "bEat the Board" tourney going.
Silver Nugget is hosting the BTM and 1-2-3 tourneys which is great for "practice" since the 1-2-3 is contested on the USBC shot. BTM (Bowling this month) tourney is on there own unique shot and has a 10,000 bounty for 30 clean frames. Even on this one to one ratio tourney condition a 300 has been bowled so it lends to the truth - at any given time someone can get locked in for a big score.
Hope this helps bowl well!