I was gave some .45 ACP Military Head Stamp some of which dated back to WW2. I got some interesting variations that I had not seen before including a Steel cased .45 ACP. I also got a 45 ACP round with a military head stamp from Winchester that is loaded with a silver colored bullet. I do not know if it lead or not but it isn't copper. Anyone else ever seen any WW2 .45 ammo like this not loaded with copper hardball?