Rifle Scopes AR15 scope mount and calculating MIL clicks

[spotswood]

I need some help regarding setting up and calculating elevation clicks for a new scope and gun.

I am looking for a high quality one piece mount for a new S&B 5x25x56 for a Rock River Predator with a picatinny rail. I have looked at Near, LaRue, ADM but am not sure which will work the best. I need 34mm rings on it and have thought that having 20MOA built into it would be ideal.

I plan to have a 200 meter zero with the gun. I am trying to figure out how many clicks I would have to dial in for a shot at 600 yds using a 75 grain 5.56 Hornady round. The scope will adjust in .01 Mil or .36" per click and will have 27 MIL's of travel. It will have the XR reticle as I plan to sometimes dial in the elevation adjustment if time permits and sometimes hold over the target if in a hurry.

Can someone run through the numbers and show me how to calculate the amount of clicks needed for a direct hold on once I range a target?
Thanks
Gary

 

[Lindy]

Re: AR15 scope mount and calculating MIL clicks

I recommend that you stop thinking in clicks. It's far better to think of your dope in the angular units of measure which the scope adjusts in. For example, from my AI on a "standard day", Black Hills 175 match will take 11.8 mils for a 1000 yard shot.

And read this article:

Calculating Holdovers and Holdunders

 

[deadly0311]

Re: AR15 scope mount and calculating MIL clicks

also try googling JBM Ballistics and that program will generate a come up card for your rifle that is normally pretty spot on. Then you print it out and then fine tune it

 

[spotswood]

Re: AR15 scope mount and calculating MIL clicks

Thanks for the article links. They explained it all well.
Gary

 

[grunt soldier]

Re: AR15 scope mount and calculating MIL clicks

As far as a solid one piece mount. larue is the best made imo. i think the larue's have 10 moa built in but maybe only certain models. if you want 20 moa built in nightforce unimount is probably your best bet. also for a good amount more money knights armament makes one w/18 moa built in but they are close to 300 bucks.