I am looking for a source for some nitric acid so that I can start experimenting and making wood and metal finish test pieces in preparation for my first longrifle build.
Whakon Bay Outfitting Co.
Wahkon, MN 56386
They cary an Aquafortis solution suitable for gunbuilding. Track of the Wolf or most other builder supply sources will carry it or something similar.
I found several mentions across the web of using ferric nitrate crystals because they are much easier to get than nitric acid. (dissolving iron into nitric acid makes ferric nitrate solution)