How can you find the manufacture date of a German Luger?
If you look on top of the luger where the barrel is affixed to the receiver you will note four numbers. that is the date it was made.
The .30 caliber Luger cartridge goes by several names which makes searching for it somewhat confusing. Originally it was named 7.65 Luger Winchester markets it under the name .30 Luger with a 93 grain bullet. Sako of Finland also markets the round with a 92 grain bullet. While not usually available in a WalMart one can find the round in a larger dedicated gunshop in the United States.