Mike Campbell and I talked with Tom Armbrust about testing some 1900-1920s 16g ammo. Turns out Tom had already done that very thing, and the bottom line is no way to predict. As Miller said, usually the primer compound deteriorates first. Tom did say that as the old paper case and fibre wads dry and harden, sometimes an increase in pressure was the result. His previous findings had been so inconsistent that Mike and I decided it wasn't worth the effort.
Last edited by revdocdrew; 10/07/07 12:17 PM.