Newb here with a question..I'm fairly new to long range shooting. My friend has a 800 yard range that he invites me to a couple times a year so I just built myself a Savage 308 heavy barrel with a McMillan stock and finally topped it off with a Leupold Mark 4 3.5-10x40 M1 Illumintaed scope. I bought the optic used and am looking for some assistance as to how I zero it/ set the turrets. All my other rifles have basic scopes so all I have to do is take the cap off and adjust it accordingly but I am a bit confused since now I have the adjustable turrets. It looks like there are small hex screws holding the turrets on. Do I remove them, then bore sight the rifle, then zero, and finally put the turrets back on? I'm sorry if this question doesn't make much sense but as I said, I'm new to this and hopefully someone understands what I'm asking and can offer some advice. I also downloaded the manual of Leupolds website and it doesn't really help much. Thanks very much.