Rifle Scopes Scope question

[Bm22]

This is a noob question but it should be an easy answer.
When a scope has a max elevation adjustment of 75 MOA does that mean it can got 75 moa up from center and 75 moa down from center.

I am thinking about getting a vortex HS LR 6-24x50 for my .308 it said it has 75 moa of vertical adjustment. I put an EGW 20 moa base thats only 95 moa, by my calculation a .308 drops 105 inches at 600 with a 100 yard zero.

So can i not use this scope to get to 1,000 yards?

Thanks for any help?

 

[Goin'Hot]

I just looked the scope up. Vortex lists the elevation as 65 moa. That is the total amount of travel in the scope so, you need to divide that number in half. That will give you 32.5 moa up and 32.5 moa of down adjustment. If you add a 20 moa base to the mix, you will have 12.5 moa down and 52.5 moa up. You will have plenty of travel to get to 1000 yards with your 308.

 

[Goin'Hot]

Also, to help with understanding the function of "minute of angle" head over to JBM. [ JBM - Calculations - Trajectory (Simplified) ]

Choose your bullet from the drop down window and then enter in your velocity. Run the chart out to 1000 yards in 100 yard increments. A 155 SMK at 3000 fps requires 31 moa. You'll have ~52 moa so, you're fine.

A ROUGH calculation is..... One moa at 100 yards is 1". One moa at 300 yards is 3". One moa at 600 yards is 6". One moa at 1000 yards is 10". Use those numbers until you can wrap your head around the "moa concept". Quit thinking in "drop" and start thinking in moa. Minute Of Angle.

A 20" steel plate at 1000 yards is a 2 moa target. Such as a 12" plate at 600 yards or a 6" plate at 300 yards.

So, if 1 moa at 600 yards = 6", take your 105" of drop and divide it by 6". 105/ 6 = 17.5 moa.

Not EXACT (since 1 moa = 1.047") but, you get the idea.

 

[Bm22]

Thanks, i was stuck on 1 moa is 1 inch at 100 yards, i forgot that 1 moa is also 10 inches at 1000 yards.

Thanks guys!!