Apologies for the delay. I forgot that my eldest daughter was going to Poland this weekend on the office trip.
She's back now and says she will take some photos for me during the week.
In the meantime I have put the gun through the chrono with several different pellets in five shot strings and these are the results:
It doesn't care for
R10 rifle 8.2grn. The 4.49 head sizes produced an average velocity of 471.2fps for 4.04 fpe and a spread of 11 fps.
4.50 head sized velocities were even lower at just under 3fpe.
R10 7grn match pistol pellets were a distinct improvement:
4.49 head size gave average velocity of 572.6fps with a 13fps spread for 5.1 fpe.
4.50 head size average velocity was 589.6 with 16fps spread and a power of 5.4 fpe.
So better with 7 grn pellets, although it didn't like
Hobbies which produced 3.53 fpe only.
Strangely the barrel seemed to like medium and lightweight domed pellets very much:
Air Arms Field (8.4 grn, 4.52 head size) = Average velocity 552.2 Spread 18fps Power 5.69 ftlbs.
JSB Exact (8.44 grn, 4.52 head size) = Velocity 525 fps Spread 19fps Power 5.18 ftlbs.
JSB Express (7.87 grn 4.52 head) =Velocity 570.4 fps Spread 9fps Power 5.69 ftlbs.
JSB RS (7.33 grn 4.52 head) = Velocity 594.4 Spread 16fps Power 5.75 ftlbs
These were five shot strings and the barrel was not cleaned between pellets. The gun has hardly been shot by me, and it may be that with greater use, the velocity spread will reduce and overall velocity increase with some pellets.
I wasn't able to try H&N pellets, because I don't have any.
Clearly though the gun seems to be happy with JSB pellets and RWS match pistol weight pellets. I don't know if JSB do a match pellet.
Pictures to follow.