Closeup of Tulammo .223 bi-metal jacket layers.

G

Gabe1972

New member
These are closeup pictures of a .223 Tulammo 55gr FMJ bi-metal bullet, showing the layers, especially how incredibly thin the copper layer is.

I did this because of my own curiosity and decided to post them in case anyone else was interested in seeing them.

I apologize for the pics being fuzzy, but it's difficult getting clear, closeup pictures with a seven year old, cheap digital camera. It's clear enough to be able to see the layers, though.

I also have a question. I know the purpose of a copper layer on a normal copper jacketed lead bullet, but on this, is the copper there primarily to protect the steel layer from corrosion/oxidation? Thanks.
 

Attachments

  • TUL-1.1.jpg
    TUL-1.1.jpg
    187.4 KB · Views: 128
  • Tul-2.1.jpg
    Tul-2.1.jpg
    226 KB · Views: 115
  • Tul-3.1.jpg
    Tul-3.1.jpg
    181.9 KB · Views: 113
A layer that thin protects the rifling? I know that it does with regular rounds, but I didn't think it was thick enough to do that with these. This stuff is about a 1/3 as thick as a hair.
 
I'm pretty sure it was the ammo. The ignition has always been reliable. Was just wondering if you could do an analysis of the primers or something. Sorry.
 
Mosin-Marauder, no sorry necessary. I'm sorry that I couldn't help you. I'm actually fairly new to all of this so I wouldn't be much of a help. I'm asking people questions left and right because I'm still learning. I bought my first center fire rifle three months ago, so I'm pretty much in the dark when it comes to any problems. But again, no sorry necessary.
 
You must log in or register to reply here.
Back
Top