I have a soft spot in my heart for "obsolete" or otherwise rare calibers. The .264 win mag, the .41 mag, 9.3x62 mauser, etc are all cartridges I find to be among the greatest at what they are designed to do. I tend to buck trends and enjoy shooting cartridges that aren't popular for the sole reason that they aren't mainstream and easy to come by. I am hoping to add a 10mm and a .38 super into the stable here in the next 3-5 years if time and finances allow just because nobody else I know owns or shoots one.