The best way to remove the live Berdan Primer.........
1. Remove the bullet of 762x54R;
2. Pour out the powder;
3. Put the empty case into a piece of thick wood, which has a blind matching hole re-drilled by the 762x54R rimer.
4. Secure the empty case in the wood, seal any gaps
5. Secure the wood that has the empty case in it
6. Put on your goggle for eye protection
7. Use a sharp metal to pinch the primer, like a firing pin will do when the trigger is pulled
8. Primer ignited, pressure started to build up in the sealed case
9. Once it reaches the point, pressure will pup up the primer off the pocket
10. Remove the case, clean it, re-primer, re-charge and re-install the bullet
Now, you will have a nice and clean installed non-corrosive ammo.....
Anybody would like to try..... LOL.....