RE: Experienced reloaders...talk to me....
Antler Eater - Follow Bigcounty's advice. Because of your question on the small base die I assume you do have an AR type rifle. I have one from Stag Arms and I also have a bolt action .223. I've reloaded my bolt action 223 for years but when I got my black rifle I had to get a small base resizing die for it. Now when I reload for either of them I keep the rounds segregated.