I have some Hirtenberger .308 that has a steel case around a lead core, with a copper "wrap" for lack of a better term, around the steel. I did a Saeco hardness test on the steel and it is pretty soft. Can't recall the number though.
The copper jacket over the steel is relatively thick. I recovered some of the projectiles and the rifling marks look to be the same as a standard copper jacketed bullet. These don't group worth beans, but they make noise... and the brass is good.
"People live too long, dogs don't live long enough" - FTF Member-
Last edited by jeepcreep927; 06-23-2009 at 08:31 PM.