Hi,

I have the identical rifle branded as a Webley Nimbus. It was given to me by a friend who bought it and then could not get on with it. The trigger was so heavy as to be totally unpredictable and the firing cycle was harsh and noisy. At this point it was producing around 5fpe. The gun felt very oversprung, which was born out by an internal inspection, there was massive preload on the spring.
When I stripped it I found the internals to be quite nasty - rough and poorly finished. The spring was badly distorted and the trigger mechanism was bent out of alignment. I should point out that it is possible that someone else might well have messed with it at an earlier date
I fitted a much shorter, better quality spring and sorted the trigger out, gave it a polish and relube then put it back together.
It now shoots ok at about 7.5fpe .

It will never be my favourite rifle

Cheers, Mark