Rifle Scopes Vortex Viper PST FFP mil/mil total adjustment

[Cascade Precision]

OK, take it easy on me as I am still learning this system.
Rifle: Savage 111 Long Range Hunter 300 win mag
Scope: Vortex Viper PST 4-16x50 mil/mil adjustment
Mounts: 2 piece Warne with Burris Signature Zee Rings

OK, so the scope itself has 21 Mrads of adjustment. 1 Mrad equals 3.44 MOA or 3.6 inches per 100 yards. This part I have my head wrapped around. Next gets tricky for me.

So, math goes like this: 21 Mrads x 3.44 MOA = 72.24 MOA of total adjustment. Am I correct so far?

I understand that TYPICALLY the scope (on a 0 MOA base) is centered in the adjustment range. This cuts my elevation down to 10.5 Mrads or 36.12 MOA. Am I STILL correct? (only using MOA to keep my head wrapped around adjustments as I understand MOA, kinda)

To get to an arbitrary range (1000 yards), my data says I need 8.1 Mrads or 28 MOA (rounded up). Am I STILL CORRECT???

So, if my math is correct (and it has been wrong, but not very often), I can get 1100 yards and almost max out my elevation (roughly 9.8 Mrads or 33.75 MOA). I have not fired the rifle yet as my scope is not here yet. I have not tested the bullets in any other gun (first 300WM, and these are factory Federal Power-Shok, 180 grain loads at 2960 FPS per the Federal website).

Really and honestly, I do not intend to take an animal at 1100 yards. In truth, I can not ethically, at this time, feel proper about shooting past 700 yards. I just want to make sure that in the future, should I become good enough and confident enough in my ability, I am not selling myself short by not ordering a 20 MOA (5.81 Mrad??) base.

Popcorn ready, Neosporin for butt-whooping near to hand.
I went this way because if I like this scope and system, I will be putting this same scope on my precision 308 rifle.

Thanks and sorry for the long read without pics.

**edited for accuracy**

 

[fdkay]

Re: Vortex Viper PST FFP mil/mil total adjustment

At first glance, it looks like your math is good.

Now, STOP thinking in MOA, you have a mil/mil scope coming. Go to JBM ballistics and work the numbers there.
Get a good B.C. for the bullet, plug it in and change the output to mils.

You have burris zee rings, buy the inserts, they are available with a 10 or 20 moa cant.

 

[Cascade Precision]

Re: Vortex Viper PST FFP mil/mil total adjustment

I am using the LRBC from the Vortex Optics website.

So, if my math looks good, I will part ways with the MOA hand-holding and go swimming with the big fish.

I will look into the inserts, I was just hesitant as to whether I needed them or not.

Now, do I need to use the .020 front and rear? Or just one or the other? Still learning those too.

**EDIT: The 30mm rings come with 0.0 offset and a pair of 0.10 offset, 1 pair for the rear, 1 pair for the front.