Boxer primers vs the other one

Reddot47

March 05, 2006 23:15

When looking at a casing how can you tell if it is a boxer primer or something else?

0

• 

  Tailgunner1954

  March 06, 2006 00:07

  Boxer primer has the anvil built into the primer, and only 1 flash hole in the case.
  Berdan primer has the anvil built into the case, and has 2-3 flash holes in the case.

  0
• 

  nononsense

  March 06, 2006 05:25

  Leeanne,
  
  Here are a couple of illustrations to go along with tailgunner's descriptions:
  
  Berdan Case
  
  
  Berdan Case
  
  
  Berdan Primer
  
  
  
  Boxer Case
  
  
  Boxer Primer
  

  0
• 

  Reddot47

  March 06, 2006 07:15

  Thanks guys, that makes it clear to me now.
  
  I have another question. A friend gave me a bunch of 9mm brass. When you look at the base of the case where the firing pin hits the primer most of the cases have a round dimple. Some however have an elongated dimple almost as if the firing pin was rectangular rather than round. Can you tell me what this is?

  0
• 

  nononsense

  March 06, 2006 08:51

  Leeanne,
  
  It's possible that the cases with primers showing an oblong strike are from a Glock.
  
  The strange primer mark is more of a symptom than a problem in itself. It is caused by the barrel unlocking and moving downward before the firing pin can retract, thus putting a drag mark on the primer. Glocks routinely do it because of the relatively heavy striker. The problem is the unsupported and often large Glock chamber which can leave brass too large to resize properly. However, there is nothing wrong with trying to resize this brass. If it appears to be super tough in the resize die, quit and sort them out from the rest of your brass and recycle them.
  
  Best.

  0

Please sign in to leave a comment.