My dad came by the house last weekend to see the grandkids. He works in Steel, so I showed him the problem I was having with the Dillon 9mm seater plug & XTP's. The narrow tip of the 9mm XTP was creating issues seating straight consistently, because the only part that made contact with the seater plug was the very tip. They wouldn't seat straight more than 50% of the time. He had one of his machine shop guys make me a custom seater plug, using a Dillon plug and a couple XTP's for a template. I now have a die that is dead nuts perfect for the 9mm XTP (and Montana Gold from what I hear). I loaded a couple 9x25 Dillon rounds, and they are 100% straight as far as the eye can tell. The Dillon plug is on the left, the custom plug on the right. Notice how much room there is around the XTP in the Dillon plug. The custom one fits it like a glove.