- Jul 29, 2014
- 50,074
I measured some today and came up with the same wall thickness as Lake City using my digital caliper. Both the LC and the FC 13 came to .0115'' at the neck.
FC with a year stamp is military brass, same as Lake City. FC without a year stamp is commercial brass. Many people have reported that it has softer heads and the primer pockets get loose quickly.
I advise you not to swage them too much as they seem to loosen up faster that other brands. I see most of the FC cases loosen up in my 300 BO and I am only shooting 150gn cast bullets at 1600 FPS. They loosen up in .223 but not as often and I have that cooking at 3200 FPS. Regards, John