Nukem, Alvin, rhuff,
You guys have excellent guns, and I think it's not the gun or you why you are not getting better results. I just think that you haven't been exposed to different technics that might work better. There is no doubt in my mind that you could do better by changing technics.
Here's just one of the methods I used for griping my gun but first some info as to why.
The Luger has a stock lug that was figured, and they were correct, to be the
center point of recoil so that it could be transferred to the/a shoulder stock.
1. So, point your index finger and place it beside the upper part of the trigger guard.
2. With left hand place grip of gun right in the middle between your rt. index finger and thumb to where it feels comfortable. The whole weight of the gun should feel comfortable too. This will help support the center point of recoil and lessen the push of the big thumb muscle.
3. For practice, aim the gun somewhere and look at the
front sight. Squeeze your grip to, not light or strong, but
firm medium pressure while looking at the front sight. If it moves left or right or up/down, your grip is incorrect. --Practice squeezing and releasing
until it does not move. ---Doing this will free the gun from undo vectorial pressures/tensions of your grip.
Happy practicing this part,

M