My first was Hodgdon BL-C(2) for my new .204 Ruger that I couldn't find any ammo for. That particular situation kicked off my reloading career in 2004; dies were available, I had 80 pieces of once-fired brass and an new-found addiction to precision shooting but no way to feed it. A friend and co-worker agreed to teach me how to load on his equipment and boy was I proud of those shiny little soldiers I'd just made. They shot even better yet than the factory ammo (which was still sub-MOA) and within a couple of months I bought a press and dies for just about every other rifle and handgun I owned. Now when I buy a gun I buy new brass and dies (and often a boolit mold) instead of ammo.