Shotshell reloading

[Hank]

What all do I need to start reloading shotshells? I'm starting to get back into shooting clays, but the price and availability of ammo is crazy and starts to get expensive when you shoot every week. I have a .410 1100 on the way and can't find target loads for it anywhere, so i'm mainly looking to reload .410. 

I have an old 12ga press that my grandfather gave me years ago, but i never used it. I'm not sure what make it is either so i'll have to dig it out and check. I know i'll need to buy a press for .410, but what else will i need besides hulls, powder, shot, and primers? Is all of this stuff readily available? 

Also, i have reloaded centerfire cartridges so i'm not completely new to reloading.