All I have bought a nice Jetz so the T8 (larger model) has to go!
As in title it's 1/2" UNF and it's in very good condition and has been looked after properly. It has been proofed to .223 but it easily 7mm.
Washer has been cut to a standard Tikka T3 barrel.
£100 face to face (I'm either in Yorkshire or Buckinghamshire)