I came across this in an email from a Military History museum owner i used to help out. Don't know if it has been posted here before, but i found it interesting.
Revolving cylinder percussion pistol. 24 shot cylinder has 2 banks of chambers. A double loading rammer is located beneath the barrel. The barrel pivots to fire either the outside or the inside bank of chambers. Design attributed to Fordyce Beals and possibly manufactured by Remington.