[Thor]

Frank, is the Luger jamming when it is trying to feed the next round? Is it a feed jam (round not being stripped from the magazine)? or does is simply not close AFTER the fresh round is in the chamber? A Feed jam is usually because the magazine spring is too weak, sometimes the first rounds in the mag will feed fine, then the last ones will appear tipped and not going into the chamber. If it is not closing, that is usually a weak main spring. Many long barrel Lugers have had their main spring WEAKENED intentionally so they will eject modern ammo which is typically a little lightly loaded. In the longer barrel models the additional mass of the barrel must be overcome to get the breech far enough back to eject the empty and pick up the next round. If this doesnt happen, typically the shooter will go to a little hotter round or clip the main spring. I favor the former and not the latter. Let us know what kind of failures you are having so we can help you! Thanks!