Old air rifle ID - any ideas please?

[Dodgerover]

The photo isn't very sharp. Some high res close ups of the breech and cylinder may help.
It could be one of many makes, including Slavia / Carl Gustav / Diana / BSF to name but a few.
Better pics please.
Pete.

Hi better pics now on the first post. Anymore detail shots I can get that will help please let me know.
I'm thinking maybe its a Relum Telly but a couple of details are slightly different from what I could see in other pictures.

Thanks for all the help

[metalmickey]

HI GILES. DO 5.5 mm PELLETS GO INTO THE BREECH OF THE BARREL. IF SO I WOULD SUGGEST PULL IT APART AS THE PISTON HEAD WASHERS TEND TO DIS-INTERGRATE OVER TIME AND THE GUN LOSES POWER TO THE POINT THAT IT WILL NOT PUSH OUT A PELLET.
HAS THE RELUM TELLY I SENT YOU ARRIVED YET ? ATB METALMICKEY

[Benelli B76]

Has the look of a Relum or Slavia. Some rifles of the older era such as the Swedish Bahco or Excellent have a tight 5.4 mm bore and the pellets need to be sized before firing.

Baz

[Dodgerover]

HI GILES. DO 5.5 mm PELLETS GO INTO THE BREECH OF THE BARREL. IF SO I WOULD SUGGEST PULL IT APART AS THE PISTON HEAD WASHERS TEND TO DIS-INTERGRATE OVER TIME AND THE GUN LOSES POWER TO THE POINT THAT IT WILL NOT PUSH OUT A PELLET.
HAS THE RELUM TELLY I SENT YOU ARRIVED YET ? ATB METALMICKEY

Hi, sorry not been on for a long while, yes the Relum arrived the next day thank you very much, I got a big rat with it a couple of nights ago!

On my Dads old gun the new pellets I bought do go into the breach so I'm guessing the seals etc are all well passed their best, not sure what on earth the pellets were last time! I would like to sort it out if I can ID it as its a lighter gun than the Relum Telly, with them side by side it is very Relumish and looks to have had a tag in exactly the same position on the stock. Any ideas now the better photos are up?

Thanks
Giles