Oh! Yes you're correct VC.
It’s been so long since I've had to do it I'd obviously forgotten which way around it was. I used to do a lot of air-rifle hunting and you could never get the scopes to the correct POI on an air-rifle with its rainbow trajectory so shimming was always a necessity...but that was 10 years ago when I was in the UK so my memory had failed me, thanks for correcting the mistake.
kj
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