On Tue, 30 Dec 2008 23:08:24 -0800 (PST), Frogwatch
wrote:

OK, I hear that lead bullets foul barrels. Is this why they coat some
with copper? Why not coat shotgun shot with copper, its easy and
cheap?

I happen to have a bag of copper plated shot. The idea to increase the
surface hardness so that the shot will be deformed less by the shock
of firing. The rounder shot fly straighter. As for cheap, coated shot
do cost more, but its not a showstopper.

Casady