Astra 300 and a shrunken holster

Open to suggestions.

I just recently acquired a 98-99% Astra that's beautiful naturally I wanted a nice holster for it. I found a militeria place online that had an original WaA101 waffenamt marked holster dated 1943 that appeared unissued. I tried the pistol in it yesterday and it's like trying to put a size 10 foot in a size 8 shoe. The leather has shrunk over the years and the fact no pistol has ever been in it does not help.

I'm open to suggestions, any and all are appreciated!
Link to pictures included below.

David

https://plus.google.com/photos/11044...CKvO84CoruHmJQ