S410 fac xtra power loss - help

[amadablam]

Hi all

Recent got a combro from BBF , thanks

Checked power on the rifle this evening and was shocked at how much it had dropped. I had been living in blissful ignorance

It was 21.4 fpe with 18.13 gr jsb jumbo heavy pellets at 729fps.

Any ideas on what I need to do to restore the power?

All help greatly appreciated
?

[devonhunter]

How old is the rifle?

[amadablam]

How old is the rifle?

3-4 years old. I think it might need it's seals done.

[Blackbaronfish]

It could be a combination of seals, tired hammer spring and in need of a hammer rail clean.
Get yourself a seal kit from Julian and give it a once over. Whilst you have it stripped you could nip up the grub screw on the adjuster as this will stop the knob moving power too easily.

BBF

[amadablam]

It could be a combination of seals, tired hammer spring and in need of a hammer rail clean.
Get yourself a seal kit from Julian and give it a once over. Whilst you have it stripped you could nip up the grub screw on the adjuster as this will stop the knob moving power too easily.

BBF

Cheers BBF

I have sent him a pm to purchase the necessary

Time to look on YouTube for some guidance

[poguemahone]

How old is the rifle?

3-4 years old. I think it might need it's seals done.

change the valve

[amadablam]

How old is the rifle?

3-4 years old. I think it might need it's seals done.

change the valve

Thanks poguemahone

The firing valve? Is it easy to change?

[amadablam]

Anyone know the most straight forward way to get to the hammer? I've never opened up an air rifle before

[Blackbaronfish]

Cheesy music but it will give you an idea https://www.youtube.com/watch?v=4Srn78Pz5TA

BBF

[amadablam]

Cheesy music but it will give you an idea https://www.youtube.com/watch?v=4Srn78Pz5TA

BBF

Thanks BBF

Im guessing that part where he uses the drill is to do with the anti tamper that we hear about?