I'm new to the forum so this is my first post. I'm new to gun collecting too. I have a .22 MAG Davis Derringer, .22 Heritage Arms Rough Rider, and a .32 Model 732 H&R. I want to know what year this H&R 732 would have been made. The Serial number starts with AU. I searched the archives and so many other serial numbers but must have missed AU. I'm also wondering about the ammo. It says on the barrel S&W L. Is S&W Long the only ammo at all that will work in this model or will the shorts too?