Funnily enough I was just zeroing mine today at 10 yds.
When I got it the leather barrel/breech seal was so compressed that the barrel was pointing up ever so slightly and shooting way too high.
I fitted a thicker leather seal in the barrel and it bought the poi down enough for 10yds and also made a better seal.

So I finally zeroed it today and it’s quite an accurate pistol, and that trigger is really really good, especially for a pre war pistol. I don’t mind if they are a bit low on power.

Cheers,
Matt