Vortex Viper 6.5-20x50 & 300 WM problem

Muttt · #8 03-12-2012, 05:06 PM

Well, I have a Viper 6.5-20 x 50 on my Remington 700 SPS tactical. I am using an EGW 20 MOA base. I originally mounted it using Warne Tactical high rings. When I zeroed it at 100 yards, I was at the very bottom of the travel and 1 inch high at 100 yards. That gave me 68 MOA of travel UP. Although I was happy that I had so much travel available, I didn't want to run the scope on the bottom mechanical stop. And, I wanted to be dead on with my 100 yard zero so my dope would read correctly. So, I replaced the high rings with a set fo Warne Tactical low rings. This shifted my point of impact down 9 inches. This moved me up approx 9 MOA which reduced my amount of UP travel to 59 MOA. I don't see my set up being any different than yours. They are almost identical. There is no way you should only have 6 MOA of travel left. Are you sure you aren't cranking the dail in the wrong direction? With 59 MOA of up travel, I can take it all the way out to 1000 without any hold over at all.

Give the folks at Vortex a call or email. They are superb peole and will bend over backwards to make things right.

loosesniper2000 · #9 03-12-2012, 05:46 PM

By looking at the picture it seems like everything is in place. If I were you I'd borrow another scope (good luck doing that) or try one off your other guns to see if you have the same problem. If you do, then the problem lies within the machined work on the gun/base...etc
I'm guessing you got a bad scope but that's only a guess.
Let us know

bruce_ventura · #10 03-12-2012, 10:25 PM

I guess the other explanation is that the OP confused up vs down on the turret. That is, at a 100 yd zero the turret was 7 moa from the upper end of adjustment, not the lower end. Might be a good idea to look through the scope again and confirm that the reticle moves 56 moa up, rather than down, from the 100 yd zero. If the reticle moves down (causing objects in the field of view to appear to move up), then there is no problem.

bullelk14 · #11 03-13-2012, 12:30 AM

Bruce, now you have me second guessing myself. I started with the scope close to bottomed out when I went to zero at 100. I was hitting in the dirt 5 yards in front of the target. I kept twisting it in the direction of the up arrow on the elevation turret until I zeroed at 100. Now, zeroed at 100, I can only twist the elevation turret in the direction of the up arrow 6+ MOA before topping out all the way up.

We have a new shop near where I live called Idaho Armory, guy who owns it is a pretty distinguished 1000 yard shooter. Think I will run it in and have him take a look at it.

trazman · #12 03-13-2012, 06:47 AM

Quote:

Originally Posted by bullelk14

Bruce, now you have me second guessing myself. I started with the scope close to bottomed out when I went to zero at 100. I was hitting in the dirt 5 yards in front of the target. I kept twisting it in the direction of the up arrow on the elevation turret until I zeroed at 100. Now, zeroed at 100, I can only twist the elevation turret in the direction of the up arrow 6+ MOA before topping out all the way up.

We have a new shop near where I live called Idaho Armory, guy who owns it is a pretty distinguished 1000 yard shooter. Think I will run it in and have him take a look at it.

If it is so, then the only thing possible is, that the receiver and the mount produces 60 moa of inclination, which means that there is something wrong with the receiver probably, becose if it would be the mount you should se that it is inclined 60 moa, but I don't know if it even exists with such inclination...

Coyboy · #13 03-13-2012, 07:12 AM

Quote:

Originally Posted by bullelk14

Bruce, now you have me second guessing myself. I started with the scope close to bottomed out when I went to zero at 100. I was hitting in the dirt 5 yards in front of the target. I kept twisting it in the direction of the up arrow on the elevation turret until I zeroed at 100. Now, zeroed at 100, I can only twist the elevation turret in the direction of the up arrow 6+ MOA before topping out all the way up.

We have a new shop near where I live called Idaho Armory, guy who owns it is a pretty distinguished 1000 yard shooter. Think I will run it in and have him take a look at it.

swap the rings end for end and see if that makes a diference.

bruce_ventura · #14 03-13-2012, 08:05 AM

Bullelk, your description confirms there is an issue with the rifle. A three degree+ alignment error is huge. Seems very unlikely the issue is the scope. Your photo doesn't indicate anything unusual to me. Most likely the solution lies with the 20 moa base. I'm guessing you will have to either replace it or bed it. Having another pair of eyes look at the problem is always a good idea.

What is the history of this rifle? Is it new, or was there a different scope on it previously?