Have you considered the really long eye relief scopes like those on "scout" rifles? They mount on the barrel, really long eye relief.
Here's one of them:
http://leupold.com/hunting-and-shooting/products/scopes/fx-ii-riflescopes/fx-ii-2-5x28mm-ier-scout/
There are others from the various makers, this one was just easy to find...


Vagabond
NRA Benefactor Member

"I spent most of my money on guns and hunting and shooting...the rest I just wasted!"