Hi Glenn,
This doesn't really answer your question, but it may give some idea of values.
Over the last few years I have sold quite a few airgun magazines on e£by, a mixture of Airgun World, Airgunner and Sporting Air Rifle. Most copies sold for between 99p and £3, although one copy of Airgunner sold for £10.50 I've no idea what was so special about
The magazines dated from 1977, and with some gaps, up to 1990's.
I didn't have any complete volumes to sell, and the condition of the magazines varied from 'very good' to 'well used'!
ATB
Paul.