Second luger - shooter...key holing issues

[Sieger]

Originally Posted by Schutzenbob

I've been trying to make sense of you 9mm key-holing with a hot load, but shooting well with a lighter load. It could be that; #1 the main spring in your pistol is weaker than it should be. #2 the hotter load is causing the breach to open prematurely and so the pressure is dropping off too soon. Just a guess.

Hi,

1) The main spring isn't activated, to any real extent, until the bullet actually exits the barrel. The toggle remains firmly in battery until then.

2) Same answer as 1) above

Perhaps a mechanical explanation would be, simply a overly soft bullet combined with an overly hot load that is severly over running the rifling twist.

This is my best explanation. .

What has been your experience here?

Sieger