Maybe a cure to this problem would be when fitting the barrel make sure the two top mounting grub screws are done up tight before tightening the one underneath, thus making a good seal........ Jez. That's exactly what I had to do to cure mine. It was leaking from between the top of the probe and th...

TenMetrePeter wrote:So what if you have a loose-ish barrel with no brass collar? PTFE tape or Loctite?

If you are asking me I will have to pass I'm afraid - all I can suggest is that you put the question to Julian

[quote/]thanks, don’t know what went wrong with the post above anyway did the new seals solve the problem ? and what method did you use to fit them/ push the barrel in did you use any lube eg rubber grease etc . I’m a bit puzzled to how the seals ended up split its only a month old was it done durin...

Julian says they are part no S650A and are only fitted when AA find the barrel fit in a rifle too loose. They were fitted in my S400F too which blew from the breech seal. I got a replacement from Julian.

Hope this helps

Julian Thanks for your help and advice about replacing the breech seal holder on my S400F and telling me about the existence of the external breech seal holder o ring (S650A) which isn't even shown on the official AA parts diagrams.

KRs
Tony

Chris79 wrote:Hi I just got a new s400 superlite with the anti tamper ahear bolt, is that pdf still available please?

+1 please Brooksy