After reading Beagle's praise of the Lyman 358156 plain base , I thought that I needed one of these. Here is Beagle's article on the plain base 358156 :

http://www.castpics.net/subsite2/ByC...20358156HP.pdf

I'm anxious to try this one out in my Smith 686 , 6" and my Marlin , 38 Spec., 1894, CBC.