7.5x54 MAS "TE 3-67 S 7.5"


#1

This is 7.5 French MAS ammo (and the box) which I handle rarely. For some reason the ring around primer looks unusual to me.


#2

The primer are ring this way on cases brass. No sertissage on cases steel or aluminum.

municion.org/7_5x54/7_5x54.htm


#3

I talked nonsense!

Some variations of sertissage for the cartridges of French manufacturing.


#4

While looking for something else I came across this (old) thread.

That “ring” around the primer is a primer crimp which before the primer is seated is in shape of a circular raised portion around the primer pocket. When the primer is seated and pressed in the ring is pressed flat at the same stroke and the primer is well crimped.

A german WWII patent that can be seen on late 7.9 cartridges.