Enjoy that Luger. They have always been interesting to me. I've owned a couple. In fact, a Luger was the first pistol I ever bought, a very long time ago. Much more recently, I owned another for a short time. Neither of mine were very nice, or reliable. My personal best for Luger functional reliability was almost a hundred rounds before a jam. I'd always heard that the Luger required warmer ammo, and initially tried Winchester 124 grain NATO ball ammo in my latest Luger. Total Jammamatic. The Federal American Eagle 124 grain ball set the reliability record. This particular load is the lightest factory loaded ammo I can recall chronographing. It averaged just over 1000 fps out of the Luger and some other ~4' barreled pistols. When in original condition, using the ammo they were designed for, the Lugers must have been fine, reliable, pistols.