Reminding myself how potent the S1K really is. Gamo says it shoots 1000fps and I am sure it does with the right pellets... I found that I get my best groups with RWS Superdomes, so I have stuck with them. My first shot this morning was Supersonic and all the rest were subsonic.
I have managed to really adapt to the recoil and the new Tuna GTX trigger. It is a pleasure to shoot and I always find myself going back to it to find that my groups do get tighter with time..
Here is the Chrony results before and after a turbo tune and GTX trigger. Let me tell you it was like going from a Model T Ford to a brand new Porsch...
The numbers tell the story...

It shoots very smoothly and the groups just keep gettin better.