I picked one of these up for my CZ552. I know they supposed to be great for the money. After holding it I'm having second thoughts. I'm used to IOR and USO because that's what I am running on my centerfire rifles. This bushnell feels like a toy compared to those. Can someone that has used one of these before tell me what you thought. I can't decide whether to return it or if its really all I need on a rimfire....