The actual prices realized (with buyers premiums) aren't posted yet. all past auction catalogs & prices can be found here
http://www.pookandpook.com/catalogs/past.php .
The guns & a Large 1807 dated Powder horn inscribed with a cityscape of New Orleans are in lots 584-604.
You can also search past catalogs there. I did a quick search for any gun/pistol/rifle items and find a large # showing up with modest prices (Browning Superposed trap gun sold for $385) to some special ones (a Cased J. Purdey .70cal percussion half stock rifle, Dickson, Woodward, Boss, Parker, H&H, Grant, etc).
Well worth looking thru for a variety of interesting, odd & historically notable things with pictures, descriptions, estimates and final prices including buyers premiums.
Have fun reading.