ben-t
I'm with you on the acres of green felt or whatever so you have to search for the Gun...:)
I don't really kill things anymore....never got my safety cert' since moving over here (USA from Blighty), so I just shoot clays through two nice old 30" bbl medium pigeon Guns..7lb 10, & 7lb 12oz..very mild to shoot with 1oz homeloads!
I bought alovely old Hanson 1960ish AirMail Post Office scale at a garage sale about 10 years ago for $5..seems Very accurate
The weight should surely be in the spec's of any Gun description!
cheers
Franc