Ha - good point - tiz only claimed to be semi-recoilless so maybe it should only get a semi-bonus as you suggest!
As soon as my new complete plastic rear sight unit arrives (
it cost over 8 quid!) we can both have a go with it and reach a verdict.
Looking at it I doubt very much if it is recoilless - although the grip does wobble about a bit so maybe that is what they mean
Can you remember shooting it.
or did the Webley pistol rash come out on you to prevent any actual shooting?