@ 05:53 pm (GMT)
Drew PigottFALSE ALARM!
Whoooo! The bolt would not retract because I had threaded a screw that holds the base for the scope too far into the top rear of the action, just behind the stripper clip boss. This made contact with the boss on the top side of the bolt that sits proud when the bolt is open; all this presenting me removing the bolt.
Major sigh of relief. The very last thing I wanted was to of destroyed a rifle that has a great deal of sentimental value to me.
Sorry for the confusion.
All the best,