FC Headstamp Question

Discussion in 'Ammunition & Reloading' started by ah141nj, Feb 4, 2010.

  1. ah141nj

    ah141nj New Member

    Hello All,

    Just got a delivery of FC Crimped brass that I ordered.

    Its all Federal, but with different headstamps.

    Can anyone tell me the difference in the markings?

    I know the numbers mean the year of production, but what would be the difference between FC 223 Rem & FC 08?

    Are there any years better than others? It seems that I have from 05 - 08

  2. masterPsmith

    masterPsmith New Member

    Denotes year of manufacture..............


  3. robocop10mm

    robocop10mm Lifetime Supporting Member Lifetime Supporter

    FC is Federal Cartridge. The FC headstamp is used on some of the "mil spec" or LE ammo. The FC ammo "may" have been manufatured at the Lake City plant that Federal (ATK) runs for DoD. The brass "may" be slightly different than the Fed or Federal stamped brass. It may be made on different machines and/or made of a slightly different alloy.

    The best bet is to weigh the cases and sort by weight. Weight will depend mostly on thickness of the brass. Thickness will affect volume. Volume will affect pressure so powder charges must be adjusted to compensate.

    WTS, Federal (Fed, FC) brass is my favorite. It tends to run a bit harder than some other brass. Because of the hardness it is "tougher" but may have a slightly shorter life span. You may not get as many loadings out of it. I generally lose the brass before I get any splits.
  4. ah141nj

    ah141nj New Member


    Thanks for the detailed response.

    I was thought the diff. between FC 223 Rem & FC 08 was commercial and military, respectively.

    Would weighing the cases be that crucial if I am not loading to max or near max loads?

    I have been sorting them by year as they come out of the 1st tumble.