I have an older Tasco 2 power pistol scope like you mentioned. It has been mounted on a couple different Contender barrels since the early eighties. Eye relief,while I never measured it,is fine for any normal handgun use. I am six feet in height and normal in arm length. As far as the corrective lenses thing,I can't see the scope,much less my target without them. If you have found that scope for a good price,I would say buy it based on my experience. It's not as good as my Leupolds,but a good deal for a low price.