Ok I have been trying for hours to figure out the difference between a flat/15 moa/20 moa base etc. For my Mueller scope I ordered with 60 MOA internal adjustment it is said that on my 308 to reach 1,000 yds I would need a 20 moa base. And that is a darn shame as I didnt want to have to spend more money now. But I dont want to have redo all my sighting/dope in a month when I upgrade. So I might as well do it now before I even start. In short I finally found my answer as to the different bases.

Go with the 20 MOA base. Much better to have it an not need it, than to need it and not have it. The cost difference can be negligible depending on the components you choose. I put 20 MOA bases on everything except 22 LR. Southpaw

If my scope ever gets here? Was suppsoed to be here today at the latest, I am gonna have the shop up the street mount it with the signature rings. I get it, as long as you can align it reasonably then you can change the inserts to give you that forward tilt, hopefully they will understand how to do this better then me. Thanks for the replys.

Make sure they degrease the rings and in particular the screws and holes. I found out the hard way on an antelope hunt what happens when you don't. You miss a lot until you figure it out.

On second thought I think I will do it my self at the range just for a learning experience. In theory (I know) on my 308 (150 gr ammo) I will be able to shoot out to 300 this week just to get info for sundays coyote adventure. Is their a way JFMI on that 100 yd target to see if I could get out to 1,000 yds? Just so I dont have to redo everything in a couple weeks. The "remington shoot program" says to set sights 412" high for 1,000 yd with 100yd zero. That seems pretty high to me? I know actually doing it is the only real test, but I wont be able to shoot that far for at least a couple weeks probably. Just so I can set it up for max range the first time since the scope I ordered only has 60 moa adjustment. Thanks

412 inches drop at 1000 yards is 39.3 MOA. So once you are zeroed at 100 yards, spin the dial while counting and see if you have 39+ MOA of "UP" elevation left.

Ok is there an easy way to figure out the clicks? If my scope is an 1/8" @ 100yds, 1/4" @ 200 yds etc, I am still trying to figure all the math out like how you got 39.3 moa out of 412". I do understand how to check the scope with the 39.3 moa. So 1 MOA = 1.047 @ 100yds X 10 for 1,000 yds gives you 10.47 / by 412" gives you the 39.3 right? Man I should have paid more attention in school, but that was along time ago So how does that equate to an 1/8" adjustment scope? I need a chart! 1/8" @ 100 1/4" @ 200 3/8" @300 1 1/4" @ 1000 is that right? If I just take the 412"/1.25 I get 329.6 clicks So one calculator I found http://www.biggameinfo.com/index.aspx?&page=%2fbalcalc.ascx says its like 346 clicks for 1/8" clicks, is that right, I am still trying to figure out how to get the number of clicks? This one looks a little better? http://www.eskimo.com/~jbm/calculations/traj/traj.html

Your math is right. as far as your adjustment your scope is (or im assuming it is because ive never seen a 1/8 in adjusting scope) 1/8 Moa witch is .130875 in adjustment at 100 yrds. Im not shure of the math for the click adjustment but just running some numbers in my ballistic program for 165 remington factory ammo loaded with nosler bt i come up with 287 clicks to get to 1000 yrds with 100 yrd zero it also says the bullet has 414 in drop. But if anyone knows how to do the math for this i would like to know. with only 60 moa adjustment in your scope i think you will need 20 moa bases to get to 1000 yrds.

It is an 1/8" @ 100 yd adjustment. Ya I am gonna have to get a 20 moa mount, I did get the burris signature rings, maybe I can squeze some out of them. Thanks for the help everyone, I hope my math is right I dont know how else to do it? Sorry I am on vacation this week, the weather is bad, my scope is not here and I'm bored so I am just trying to bone up on the class room portion so I will be ready to hit the range.