Help with zero Rem 700 .300 RUM w/ Zeiss 6.5x50

[bjonesehc]

I am new to longer range shooting so I am seeking an answer for an issue that has me puzzled. I have a Remington 700 .300 RUM with Zeiss Conquest 6.5-20x50 on Talley LW Meds shooting Remington PL3 180 Sciroccos. This seems to be a very common setup to my knowledge. My issue that after zeroing the gun I am only left with less than 14 MOA in elevation adjustment, which puts me about 775 yards. I thought for sure this set up would dial out further than that without the need of a +20moa base; as I have seen many users go out to 1,000 with no extra hardware. Is there some adjustment I missed in the Ziess turret that would better balance that zero level?
Thanks for the help!
BJ

 

[WildRose]

I am new to longer range shooting so I am seeking an answer for an issue that has me puzzled. I have a Remington 700 .300 RUM with Zeiss Conquest 6.5-20x50 on Talley LW Meds shooting Remington PL3 180 Sciroccos. This seems to be a very common setup to my knowledge. My issue that after zeroing the gun I am only left with less than 14 MOA in elevation adjustment, which puts me about 775 yards. I thought for sure this set up would dial out further than that without the need of a +20moa base; as I have seen many users go out to 1,000 with no extra hardware. Is there some adjustment I missed in the Ziess turret that would better balance that zero level?
Thanks for the help!
BJ

Look at the spec's on your scope. What is the total MOA available for elevation?

Found spec's.

http://www.eurooptic.com/PDF/zeiss-conquest-scope-manual.pdf

At what range are you zeroing?

What reticle does it have?

You need roughly 22 MOA of adjustment to get to 1000yds with that combo using a 200yds zero so as it is you are correct you don't have enough to get there.

Looking at a spec sheet though something doesn't seem right.

Conquest 6.5 – 20x50 MC:
Elevation adjustment = 45 inches/100 yards = 175 clicks

Note: Conquest 6.5 – 20x50 MC with Hunting Turret Option lowers vertical
elevation adjustment capability to 30 inches/100 yards.
Windage adjustment = 30 inches/100 yards = 120 click

Do you have target turrets or target turrets?

 

[FEENIX]

I am new to longer range shooting so I am seeking an answer for an issue that has me puzzled. I have a Remington 700 .300 RUM with Zeiss Conquest 6.5-20x50 on Talley LW Meds shooting Remington PL3 180 Sciroccos. This seems to be a very common setup to my knowledge. My issue that after zeroing the gun I am only left with less than 14 MOA in elevation adjustment, which puts me about 775 yards. I thought for sure this set up would dial out further than that without the need of a +20moa base; as I have seen many users go out to 1,000 with no extra hardware. Is there some adjustment I missed in the Ziess turret that would better balance that zero level?
Thanks for the help!
BJ

BJ,

Welcome to LRH and enjoy!

This is probably the best optics advice you'll ever get from an optics SME ...

Even though the scope adjustment range may be large enough to get to 1,000 yds, you should use a 20 moa base. That's because off-axis optical aberrations that degrade resolution increase with incidence angle. You should set up your rifle so that the incidence angle is minimized for long distance shots (where resolution matters most).

Assume the base is within +/-10 moa of alignment with the rifle bore. Let's also assume your bullet drops no more than 30 moa at 1,000 yds, and you like to zero your rifle at 100 yds. With a standard base, you would need up to -40 moa of adjustment to get to 1,000 yds. That means you need a total 80 moa of adjustment.

With a 20 moa base you would need up to -20 moa to get to 1,000 yds, but up to 26 moa to get to a 100 yd zero (worse case boresight alignment in each case). That means you need a total 52 moa of adjustment. With a 20 moa base, however, the incidence angle at 1,000 yds is 20 moa less, so the image will have less blur.

Having said that, if you want to keep your current scope/ring combo, you'll need a 20 MOA picatinny rail (plenty of good ones to choose from. If you do not care for a picatinny rail, get the Burris signature zee rings with offsets ...

[ame]https://youtu.be/wcRAX5OLtJE?t=3[/ame]


Good luck and happy safe shooting/hunting.

Ed

 

[bjonesehc]

Thanks guys for the input...I guess I just assumed I would have more moa after zeroing. I didnt account that most scopes I was comparing to had double in adjustments compared to mine. So a 20 moa base is needed to get me where I want to go.
Appreciate the help Feenix and Wildrose!

 

[WildRose]

Thanks guys for the input...I guess I just assumed I would have more moa after zeroing. I didnt account that most scopes I was comparing to had double in adjustments compared to mine. So a 20 moa base is needed to get me where I want to go.
Appreciate the help Feenix and Wildrose!

he main problem with 1" tubes is that it automatically limits how much adjustment you have for windage and elevation over scopes with larger tubes.

This is why long range precision scopes (those specifically designed for it) have larger diameter tubes.

The optics of the Zeiss Conquest are excellent but they really aren't designed for this purpose so you buy yourself a lot more room by adding a canted base/rings combo.

I have several Zeiss Conquest scopes myself on different rifles and love them but they are what they are.