The young,new, or uneducated shooter, is that really that strange of a question. Consider th .22 cal., short,long,long rifle are most common but few know of the .22 auto. the number of less than memorable calibers out there that never quite made the impact that the designer hoped for. Many collectors enjoy finding such to add to the unusual collection but a novice shooter getting a handgun from a relative of friend and doesn't understand what is meant, it isn't too bad to ask. We have been around for a year or two and learned a thing or two but I can say I still find guns and cal. that I haven't seen before or heard of, yes I chuckle at some questions I hear of read but I am glad they are asking to learn, and being safe. It is much better than reading some one bought ammo that wasn,t proper for the weapon they were using and it blew up in thier face and they are in critical condition.