Webley Excel .22 - Advice required please

[Shoto1]

I have recently taken possession of a somewhat tired and slightly neglected example in .22 caliber.

It is my intention to carry out a stripdown, inspection and carry out any remedial work that might be required.

The first thing I always do with any airgun is to check the energy with a range of pellets over my chronoscope - SKAN
This will enable me to compare and contrast results, after any work has been carried out.

The barrel was very dirty and full of brown residue, so after several pull throughs it was squeaky clean and ready for initial testing:

The following results were obtained:

RWS Hobby, 11.9gr 638 FPS - 10.7 FPE
Bisley Practice, 13.7gr 604 FPS - 11.1 FPE
H&N Sniper Light, 14.00gr 540 FPS - 9.08 FPE
JSB Exact RS 13.43gr 574 FPS - 9.83 FPE
JSB Exact Jumbo 15.89gr 556 FPS - 10.9 FPE
H&N FTT 14.66gr 573 FPS - 10.6 FPE

Not too shabby for starters, I am sure things can be further refined after some basic attention.

I am struggling to find any in-depth information on this model; in particular stripdown / work guides and information on the history - date of manufacture etc.

Any help from owners / those more knowledgeable, would be very much appreciated.


Thank you in advance.