Webley rebel nearly there but odd issue.

[kash2001]

It's fixed 👍 the trigger was slightly touching the stock when screwed in so if I pushed the trigger forward it wouldn't missfire. So some quick sanding and gentle tightening of screw, it's fixed, safe and working.

But again the power is down 😭 I think I could pump forever and it slowly increase in power. At 10 pumps I'm getting 360 ish fps at 16 grains. So not great, if I did 20 pumps I might be nearing 10ft/lb

I'll have to leave it for another day, but hopefully I'll get it around 10ftlb at some point.

Many thanks for the input and never had a trigger go off due to a ill fitting stock even if it was a fraction.

Atb

[grieva]

Had a problem with a rifle I bought and received with the stock removed, thought I had bought a "pup" only to find I over tightened the stock screw, has worked perfectly ever since, good luck with the power problem.

[--ped--]

the stock screw screws into an insert that is screwed onto the grubscrew that screws into the valve so at a guess when you are tightening the screw it is acting on the valve
on most of mine i fit a rear o ring to the valve to keep the valve balanced in the tube

[kash2001]

the stock screw screws into an insert that is screwed onto the grubscrew that screws into the valve so at a guess when you are tightening the screw it is acting on the valve
on most of mine i fit a rear o ring to the valve to keep the valve balanced in the tube

Hi Ped great idea where do you locate the 2nd seal, as I agree the screw in bolt holder does seem to impact the balance and alignment of the pin 🤔 so that might help.

I'm still perplexed by the power issue. I used a 177 pump cylinder and pump valve on a 22 barrel and action assembly, as the 177 was giving out around 400fps, so I thought putting a 22 action on it would increase the ftlb but it hasn't at all. I'll look at the pump valve to see if there's any more play in that to increase the velocity, but it just does not seem to want to go over 400fps in any calibre.

Hopefully I'll get there in the end, I've learnt a lot about them but so frustrating as I've thrown hours on fixing it but just hitting a brick wall hard 🤣

Atb

[junglie]

Hi Ped great idea where do you locate the 2nd seal, as I agree the screw in bolt holder does seem to impact the balance and alignment of the pin 🤔 so that might help.

I'm still perplexed by the power issue. I used a 177 pump cylinder and pump valve on a 22 barrel and action assembly, as the 177 was giving out around 400fps, so I thought putting a 22 action on it would increase the ftlb but it hasn't at all. I'll look at the pump valve to see if there's any more play in that to increase the velocity, but it just does not seem to want to go over 400fps in any calibre.

Hopefully I'll get there in the end, I've learnt a lot about them but so frustrating as I've thrown hours on fixing it but just hitting a brick wall hard 🤣

Atb

Can you adjust the pump stroke on these like innova's & have you checked the pump head seal for wear? sounds like you have either or both of these problems to me.

[--ped--]

i cut another o ring groove in the rear of the valve
have you altered the piston blow off spring tension? ,they have an anti tamper pin but it isn't hard to get it out so you can adjust the blow off pressure