New Member here

[Ingvarg]

Welcome.
Lugers are known to be "ammo sensitive", so most likely that is the problem. Magtech 115grs has worked well for me, and I�´m sure other members will let you know what have worked best for them also.
Not enough lube or "limp wrist" could also be part of the problem. I have found mine to do this if I dont hold it tight enough.