I have been there twice and go back in June. I am using a Wally World 390 black gun with screw chokes. DO NOT take any version of the Browning Gold! They do NOT hold up to this volume. In 2005 we failed two of two golds. My numerous Parkers and better grade K-80's will be at home. I can afford to loose a 390 all though I would note that your NRA insurance covers your guns there. Have fun!
bill