Hi guys.

I've decided to buy 2 flip up scope covers for my new Vortex scope and I have a question that I hope somebody can please answer for me. Basically, I've measured the scopes eyepiece to be 40mm and the front objective to be 50mm. So when I actually order the flip up covers, Is It best to order the exact measured size of 40mm & 50mm or should I order slightly less or more than what I measured? Say 1 mm smaller or larger. Without actually being able to try the fit before I buy, I'm not sure what to do.

Thanks