Thank you very much Mr Garvin.
At the risk of sounding impolite may I mention that I felt there was a more 'technical' slant to this edition - that chap in Canada completely building his own air pistol from a Patent Drawing, which was excellent AND that other chap, the one with the French Co2 rifles and a pistol collection.
On reading the latter article I was somewhat alarmed at the amount of Gas he has retained within his home environment - this could be a Health and Safety issue, in my opinion.*
*Exposure to Co2 can be dangerous - evidenced by drowsiness / heavy eyelids, before one falls into the arms Hypnos himself.