Theoben GP .177

[GSMN1]

Newly acquired Theoben thumbhole Grand Prix Sirroco in.177. Two owners. First Mr G Taylor who was president of a shooting club in central Scotland. Serial number TB4093. Trying to peace together some information for my own file. Does anyone know what date that would correspond to? Any info to share would be appreciated.

Completely new new to the Theoben Range. Trigger has an almost imperceptible second stage breaking point. Does anyone have annidiota guide to increasing second stage and decreasing first (based on the model of trigger on this particular rifle). Although it arrived in its original box with the original pump there were no instructions!

[Shed tuner]

Newly acquired Theoben thumbhole Grand Prix Sirroco in.177. Two owners. First Mr G Taylor who was president of a shooting club in central Scotland. Serial number TB4093. Trying to peace together some information for my own file. Does anyone know what date that would correspond to? Any info to share would be appreciated.

Completely new new to the Theoben Range. Trigger has an almost imperceptible second stage breaking point. Does anyone have annidiota guide to increasing second stage and decreasing first (based on the model of trigger on this particular rifle). Although it arrived in its original box with the original pump there were no instructions!

is that the one with the outer and inner allen headed adjusters co-encentric ?

[GSMN1]

Jon. Just popping out but quick photo reveals a hex bolt on the upper front section of the trigger. Is that what you’re referring to? https://imgur.com/gallery/B81IS

[GSMN1]

If you can access the image on the last post...
Does anyone have any idea on what bolt does what?
Would like a rough idea before I start fiddling.

[Shed tuner]

sorry Geoff, the one I was thinking was the latter trigger on the Evo. I can't remember how my long departed GP trigger adjusted

[Ragle Jnr]

Had fun with mine too! Eventually found this on bbs and also a tip to only turn ⅛ of a turn at a time. Now very happy.

Turn screw clockwise for heavier second stage, however if the adjustment has been reset incorrectly this may not be the case, at this point you have to get back to a base setting which does seem to confuse most people.
It may also need some work other than adjustment as it could be as much as 15 years old.

Ben

David