I have .22 Weirauch HW97K Mk 1 with a Nikko Sterling 4-12 Scope,
Sportsmatch Mounts, Bushwacker scope covers etc etc.
It's an absolute beast of a gun which can drop pellet after pellet on a 12mm target at 30yds from a rested shot.
Absolutely spot on with H&N Field Target Trophy Pellets and almost as good with Eley Wasps if I remember.
I bought the Prometheus/Paragon pellets years ago when they first came out. They were an alloy pellet with a green plastic sleeve which you pressed onto the back end of the pellet.
This made the pellet into a conventional 'bullet' shape.
People were raving about them at the time and to be fair, when shot though British guns they were very accurate, allegedly.
Shot through German barrels they were bloody awful.
I was lucky to get a 40mm group at 30 yds.