Recentley bought an oldish example of the above Classic air rifle off a fellow BBS Member and furnished it with a very nice BSA 4x33 Japanese "period " scope off another BBS Member via Sportsmatch OP12C mounts and I'm enjoying the "open sight" experiance !

Pellets so far tried over a 20m distance are;
Eley Wasp 5.5
Eley Wasp 5.6
Vintage Defiant 5.6

So far, the EW 5.6 are edging it but further pellet testing will be on the cards soon !

What I would say is the although I own some nice accurate springers, I'm really enjoying the shooting of this old Warhorse of a great British spring air rifle.
OK, it won't "blow a gnats danglies off" at 50m but what it does do is put a bloody big grin on yer face when you do hit the bull at 20 m !