is it the seals

I had this really crazy idea the otherday that I have no idea if it could be engineered. Is somehow fit a highflow regulator between the piston chamber and breech to regulate the pressure to allow more constant pressure behind the pellet for greater accuracy - almost had a brain aneurysm over the idea - if it's possible we all will patent it lol

Cheers Xyon. All ready dropped it and retested it by time read this.But have filed that info away for future. Guessing as still had to use gclamp to compress it to put pin in that holds it all in I fluked that one. whew.
With washer out back in 600fps range. Last 2 digits 10 string group as follows 89,94,79,95,85,93,89,91,82,86.
AVG = 690fps
A lot less erratic and a lot less thump at end of stroke.
25m groups:with baffle and washer in 4.55cm,x 3.51cm
baffle out / washer in 3.4cm x 3.7cm -Baffle out washer out 1st group 3cm x 3.4cm. 2nd group minus flyer ( really I pulled trigger to early coming onto bull) and a totally pulled it, leaves a 8 shot group at 2.3cm x 2.5cm
20m groups: (didn't shoot one earlier with baffle out)
Washer in baffle in 4cm x 3.15cm
washer and baffle out 2cm x 2.5cm

now if I can get that trigger adjustment screw in ten or prefablable 12mm length I'll be able to take out the rediculous amount of travel in the sear without filing it back any more. Get that machining mark sorted.clean up the baffle, I might have what gamo should have sold me.
Cheers for advice. Any more fire away it's all been good so far.



Edited by kruzaroad - 23 Aug 2022 at 5:25pm

Ive sent the pics to gamo distributor and asked if this could be the issue with accuracy and will gamo replace the barrel. They also put a 5mm washer behind the gas ram (as standard) which I'm probly going to take out.It reeks of a gun that has just had a spacer put in to upgrade the power and I suspect that the piston is hitting the end of cylinder harder than it should, increasing recoil and doing the seal no good. I'd rather a lower power rifle (providing its not to big a drop) that hits where its aimed more than a faster rifle that puts pellets into the rear of animals your aiming to the front of.
This gun has been a major pain in the arse, but worth its weight in gold as a learning curve that's for sure.

Ha ha, sorry, I really meant to say that I would find it hard to shoot good groups at 25 m with a red dot sight. slightly older eyes can struggle to focus on the close red dot and target at the same time. 

I shot it to 15 meters with open sights and thought sweet and put scope on.(prob should have gone further)
It currently has a gun City air rifle rated scope,in a one piece base, on gamo recoil damping base they come with.(red dot won't even look into till firing strait)
I have no idea about the crown but will check it out on Web. That comment does make me wonder if its clipping the built in suppressor baffle. Will check that, probly remove internal baffle and see if tightens. I've seen no damage in bore but that's just looking through barrel with eye, so no noticeable damage might be better description.
As for the groups if that's as good as it shoots at 25 meters, it's no good to me. I've already taken a hare with tx that had a pellet in rear leg from gamo prior to tx ( that would have been aimed as a heart shot on stationary hare) I've seen your videos and would find it hard to believe that you wouldn't be putting pellets through same hole at 25m
Cheers you've given me couple more things to look at.
It also came standard with a washer as spacer behind gas ram, wonder if removing that would help without dropping the power to much. hmmm