Loose rails and accuracy

[Doubs]

Originally Posted by Ron Harding

As I said, it's a new barrel. Maybe needs breaking-in.

Check bore diameter. I've slugged numerous 9mm bores back when I shot a lot of cast bullets and they can be quite large. Typical 9mm bullets are .354 ~ .355" in diameter. I've loaded .357" bullets for some of my 9mm pistols with oversize bores but never for a Luger with an original barrel.