Comment on the Tech Notes article:

"M"-Proving On The Lyman "M" Die (http://www.beartoothbullets.com/tech_notes/archive_tech_notes.htm/39)

We appreciate your comments on this article.

I found this article to be well written and easy to understand.
Mike has obviously taken time and placed thought into the article.
I am currently working with him to have an expander die made up for the .348wcf.
Scott in Vermont