Trying to get along with the .177 Evolution

[Phil Russell]

I was told by the factorygurus that pumping a ram up too far in a vain attempt to increase output can have the opposite effect and lead to a burnt out piston seal. 'A sort of anti-tamper device' was the wry comment.
I found this out after having bought a s/h Fenman at auction ... on getting home I found it very hard to cock and its output (.177) was around 5ft lbs.Diagnosis was that the previous owner had pumped it up too high.
It was fitted with a new seal, pressure adjusted and now runs sweetly, and very accurately, at c 10.3 with JSB Exact.
Cheers, Phil

[ZaksGod]

should have bought a .22,i did my homework and am now glad i bought the bigger caliber as the pellets are easier to handle too.plus the .22 makes nice big holes in things

[secretagentmole]

This explains what you need to know!

http://www.youtube.com/watch?v=ZLed_nD5ixA

[DNF]

This advice is spot on, well done Sir for sharing your knowledge. Shooting a recoiling rifle really is an art and very rewarding when everything comes together

I hope you get sorted

Thanks I have a very good feeling about the 97kt, I think it may be 'the one'

[evert]

The breech seal is an O ring ... BS109 if the same as my Fenman. I believe the nick in the side is put there to stop the ring popping out when breaking the barrel, but in practice I have never had this happen with an 'un-nicked' ring.

If you have problems getting one, drop me a pm with your address and I'll pop one in the post to you.

Cheers, Phil

Thanks, but its not breech seal, but the piston seal that has a small nick/scratch.