Hi jim, reporting back as promised. I gave the gecos a go this afternoon. It was still cold, so not quite perfect conditions, but I put out the trap at 6 yards and rested my hand. Fired of 8 shots putting 5 into a 1.5" group and the others were a bit variable.... The trigger is a bit of a handful so I could easily have pulled them a bit, but that is a huge improvement, and this was not exhaustive testing. I can now work on zeroing the pistol and getting the hang of the trigger.

As a guide, sooting ten yards with the same pellets in my FAS I am grouping about an inch and a quarter without a rest, with the odd pulled shot.

Perhaps with some time to lead the barrel and some warmer weather it will improve.

Thanks for the help everyone.

Has anyone managed to improve the trigger on thier gun? I don't mind pretty involved work.