Just got my rifle back from my smith. He put on a Hart 1:8 chambered in 270 win. Currently building out loads in Hammer 156g and next will be 117g. Purchased a Leupold Vx5 HD 3-15x44, high rings and 20moa rail. Maiden shooting voyage to take place this week. While tinkering around with the CDS dial during a dry fire session I noticed I only have 24 MOA of available vertical correction. The scope itself has 75 MOA available. I was anticipating with the 20 MOA rail I would gain more than that. Any ideas as to what is causing the lack of available correction? Rail is installed correctly (thick end towards the tang) and rings are the same height... something is not adding up. Thought I'd check in with the brain trust on here first since my smith is closed on Monday's. Thoughts?