RE: Would it be a sin...
Spend as much on the optics as you spent on the gun?
Boys, I've killed deer with a gun WITHOUT A SCOPE that's not any kind of magnum.
Putting an AETEC on a Sako is akin to screwing your mother-in-law?
Apples to oranges, I'm afraid.
You could put a 10$ fixed 2 power scope on a Sako and it wouldn't be like that. Gross.
The AETEC is a fine scope. Why not buy it, put it on and see how you like it?
Spending 600 bucks on a scope is far closer to having sex with a mother-in-law than putting an AETEC on a Sako.