Yes, Dan Sivilich has been using a similar system for a number of years in
the Middle Atlantic region.  One note of caution for using the weight of
"lead balls" for conversion to determine gauge and/or caliber, don't assume
the shot is entirely made from lead.  During the American Revolution shot
was often made from what ever was available such as pewter and other metals.
Sometimes a musket ball appears to be lead when in fact it is a mix thus the
weight will vary.  I do not know how much this factors into the calculation
but I just thought I should mention it.
 
Bill Liebeknecht
Hunter Research, Inc.
Trenton, New Jersey

-----Original Message-----
From: HISTORICAL ARCHAEOLOGY [mailto:[log in to unmask]] On Behalf Of david G
Orr
Sent: Monday, April 14, 2008 6:54 AM
To: [log in to unmask]
Subject: Re: Lead Ball Conversion Table

I think Dan Sivilich of BRAVO has been using such a formula 
for many years.  dgo  His non-profit group has assisted 
archaeologists at both Monmouth, N.J. and Valley Forge. 
dgo