Hello, new to this forum and new handgun owner. I just aquired this Smith and Wesson H&R 733 model. I traded a couple old speaker boxes for it. It seems to funciton smooth. I don't have any ammo for it. I've read they have long and short .32 rounds. Can anyone help me with the right rounds this takes, proper maint. and cleaning, what to look out for? How old this model is? Thanks in advance. Here are a couple pics of it.