Luger not shot in 25 years...is it safe?

[kurusu]

Originally Posted by Lugerdoc

In working on lugers professionally for the last 40+ years, I've found the most common serious failure of a matching numbered part, is blowing out the back of the breach block so that the FP retainer will no longer lock-in. I believe that this is caused by a weak recoil spring and the BB bottoming out on the inside of the frame. TH

I believe this problem occurs mostly because of pierced primers with guns or ammo with headspace issues. I've seen some factory .30 ammo with the bottleneck shoulder out of specs.