Hi Mark, I'd like one too please. Carl


 


 

-----Original Message-----
From: Mark Branstner <[log in to unmask]>
To: [log in to unmask]
Sent: Sat, 12 Apr 2008 10:21 pm
Subject: Lead Ball Conversion Table









Hey Guys,?
?

Although I'd be very surprised to learn that I was the first person 
to do this, here goes:?
?

Given the frequency of finding round lead ball and shot on historic 
sites, and the fact that it has often been distorted in use, making 
it difficult to accurately measure, I came up with an Excel table 
that allows you to simply weigh the large shot or ball, and determine 
gauge and/or caliber.  Of course, this assumes the shot or ball was 
originally round and is still essentially whole ...?
?

I created the conversion table to range from 1-200 Gauge or 1.671 - 
0.28 caliber, which should cover most anything firearms-related (and 
even small cannon :-) ).  I realize  that there were 2 and 4  gauge 
market shotguns out there, but it would be unlikely for them to be 
shooting solid full-bore projectiles.  By the same token, anything 
smaller than .28 caliber would almost certainly fall into the 
buckshot or shotgun pellet range, where caliber measurement would be 
largely unnecessary.?
?

Note that I have cross-referenced GAUGE, CALIBER, GRAIN WGT, GRAM 
WEIGHT, and ROUNDED GRAM WEIGHT and ROUNDED CALIBER.   This should 
cross-correlate with historic sources, as well as modern literature, 
and lab data.?
?

I have not added information about standard sizes of buckshot, 
shotgun pellets, etc., as that data is pretty readily available on 
the web (Wikipedia).?
?

If anybody wants a copy, please send me an e-mail and I will forward.?
?

Mark?
?

P.S.  Again, if somebody has already done this in a easily accessible 
format, just ignore.?
?


-- ?

Mark C. Branstner, RPA?

Historic Archaeologist?
?

Illinois Transportation?

Archaeological Research Program?

University of Illinois at Urbana-Champaign?

209 Nuclear Physics Lab, MC-571?

23 East Stadium Drive?

Champaign, IL 61820?
?

Phone: 217.244.0892?

Fax: 217.244.7458?

Cell: 517.927.4556?

[log in to unmask]
?


"I hope there's pudding" - Luna Lovegood (HP5)?