If you only shoot 300-500 rounds a year, then the cost of getting into reloading is probably far more than you'll spend on factory ammo. You don't start really saving through reloading until you are willing to buy your components in bulk (4 or 8lbs of powder at a time, 1000 to 3000 bullets at a time, etc.). It makes a lot more financial sense if you shoot at least a case of ammo a year.

I reload .38 Special for competition using HP38 and Bayou bullets. Per round cost is $0.13, but the real benefit is that I get to design my loads to achieve the ballistics that I desire.