From the research I did on the web yesterday, more than one indicated that it would be needed. I think all were referencing using cast bullets made at home.

Given the fact that I forgot to order one in placing my midway order - odds are that it will be needed.

If you are talking about the Missouri Bullets, maybe we will get lucky. I have found those to be pretty good with respect to specs (for 45 ACP and 38 SPL).

Not really an answer but you are certainly on the money with your question. I will let you know for sure in about a week for both home made cast and Missouri.