We have an entire Forum section for just Reloading.
Look at the top "Sticky" posts.
https://forum.lugerforum.com/showthread.php?t=9385
Lots of helpful tips on 7.65mm well worth reviewing.
Also, you'll want to make sure you have a really good magazine.
Most shooters use an aftermarket magazine, like a MEG-CAR.
Older luger magazines have lose their shape or the springs aren't strong enough.
Wooded bottoms will crack or pop-off, so avoid using them.