buckstix-
The following may or may not be new to you.

Buhmiller wrote a couple of articles for Handloader in issues #1 and #13. The former includes a photo of Buhmiller holding a bullpup target rifle which he used in 1000-yard target competition. The latter article was devoted to the 458 WM, but describes s some interesting bullet experiments.

Bob Bell, who apparently knew Buhmiller well, wrote an informative short biography in Precision Shooting of February 2011. The article includes a photo of Buhlmiller with a rifle and an ex-buffalo.

Your plans for building a web site to preserve Buhmiller's legacy are laudable, but the problem with web sites is that they disappear when somebody stops paying the rent for server space and band width.
--Bob