Quester gives good advice.
One thing I would add - if you contact your die manufacturer, they will probably make you a die plug for your exact bullet.
I had RCBS do this for me years ago for a 9MM seater die. They just had me send in three of the bullets I was using and sent me the plug for free. Recently, I had Lee make me a custom plug for my 223 die. They wanted just one bullet and $12.00. Results were great in both cases.