I have seen them marked as shotgun scopes in calbela's.
BUT....


i have one on my rifles now and it shoots good like my vari-X II 3-9X40mm.i think they do that for other reasons. i would think a fixed 2.5X, 3X, 4X would be a better shotgun scope.

portage...

i have mine on my savage scout rifle in 308win it is the VX-II i have not had any of the problems you have.