I would go for the Blaser S2, it`s far from the most classic looking gun you look at. But they are extremely accurate, very safe because since you cock the mechanism when you take the safety off and the free floating barrels makes it easy to regulate it to the ammunition you want to use. I have not tried regulating the barrels of an S2, but I have done it on my d99 to get it to shoot god groups with slugs and the rifle barrel. They are also very durable against rust. And I think you can buy additional barrels for it.