Rifle Scopes Z comp 527, Disengaging the return to zero

[Mountainbum]

On the elevation turret it has a scale to 35 mils. Out of the box mine only goes to about 24.6.
On page 19 of the manual, are directions for “disengagement of the Return to zero”....
first thing it says is “to obtain full elevation travel for re-zeroing to a different weapon system
follow these instructions.
So my question is, do you need to do this right out of the box to get full elevation? And if you do is the return
to zero now disengaged? Or is my scope not working properly, and should be cranking to the full 35mils
right out of the box? I would of just called tech support but thought I’d run past you guys first...

 

[Dthomas3523]

On the elevation turret it has a scale to 35 mils. Out of the box mine only goes to about 24.6.
On page 19 of the manual, are directions for “disengagement of the Return to zero”....
first thing it says is “to obtain full elevation travel for re-zeroing to a different weapon system
follow these instructions.
So my question is, do you need to do this right out of the box to get full elevation? And if you do is the return
to zero now disengaged? Or is my scope not working properly, and should be cranking to the full 35mils
right out of the box? I would of just called tech support but thought I’d run past you guys first...

The only reason to do this would be if you are going to use a lot of inclanation in your mount and expect to get the full 35 mils.

Just zero as normal and carry on. If say you are at the zero stop and still need to go 2 mils down, loosen them screws and turn to 2.5 mils (to give extra), tighten down, and finish zero’ing. Then follow the instructions for setting zero (loosen, spin, to zero slightly tighten, lock down, loosen and torque).

The zero stop will always be .4 or .5 under zero (unless completely zero’d higher).

 

[Mountainbum]

The only reason to do this would be if you are going to use a lot of inclanation in your mount and expect to get the full 35 mils.

Just zero as normal and carry on. If say you are at the zero stop and still need to go 2 mils down, loosen them screws and turn to 2.5 mils (to give extra), tighten down, and finish zero’ing. Then follow the instructions for setting zero (loosen, spin, to zero slightly tighten, lock down, loosen and torque).

The zero stop will always be .4 or .5 under zero (unless completely zero’d higher).

Okay, I do have it zeroed already, just never bothered to crank it out all the way until the other day, and thought it might have a problem. For some reason mine goes to .6 past zero..... thanks for the help Thomas.

 

[Dthomas3523]

Okay, I do have it zeroed already, just never bothered to crank it out all the way until the other day, and thought it might have a problem. For some reason mine goes to .6 past zero..... thanks for the help Thomas.

Ya, due to how the splines work, some are .4, .5, .6 below.

Of its zero’d and you have ~25mil, that’s about in-line with a 20moa rail (17.5 + 6 = 23.5 and the other ~2 for your particular rifle).

You’re g2g.

 

[AnimalMother224]

not to hijack . but maybe to add to OP's issue and to clarify a question I had. if you want to get more travel out of your turrets, you would have to have your rifle zero'd in the lowest range of travel on the turrets correct? so if you start with a 20moa base that gets you (hypothetically) just 2/4's of the lower range. but if you add your 20 base and a 20 scope mount that (40 total), in theory, could bottom out your zero to the first 1/4 of your travel to start with allowing you to dial farther up into your turret travel until you hit the upper hard limit?

 

[Dthomas3523]

not to hijack . but maybe to add to OP's issue and to clarify a question I had. if you want to get more travel out of your turrets, you would have to have your rifle zero'd in the lowest range of travel on the turrets correct? so if you start with a 20moa base that gets you (hypothetically) just 2/4's of the lower range. but if you add your 20 base and a 20 scope mount that (40 total), in theory, could bottom out your zero to the first 1/4 of your travel to start with allowing you to dial farther up into your turret travel until you hit the upper hard limit?

Yes. Let’s take the 35mil of the zco for example.

Half is 17.5 mil. This is theoretically about where you would have a zero with no added inclination in the setup (I’ll differ from rifle to rifle).

Now let’s say we add a 6mil (20 ish moa) base.

17.5 + 6 = 23.5 mil.

Before you even start zero’ing, start at your zero stop and make sure you have 25 or so mils to allow you room to zero. If say you have 21 mils, go back to zero, loosen the screws, and set your turret to 4 mils. That will now give you 25 mils of travel to work with to zero.

Same thing if you added 12 mils (40 ish moa). Now you need at least 29.5 of adjustment (in theory).

ZCO’s instructions of setting it for 35mil out the gate takes any math need and makes it dummy proof. Set it for the full amount of travel, bore sight/zero, then slip the turret to zero.

 

[gebhardt02]

The scopes actually ship to the customers near the middle of the adjustment range, the Return2Zero hasn't been set. Mount the scope on the rifle, head to the range, and you'll have adjustment travel both up and down to get zeroed. Once zeroed, adjust the turret as needed and the R2Z sets itself. Pretty simple.

We do have multiple customers running a total of 40 MOA between base and mount and have no problem getting a 100 yd zero. This gives them most of the adjustment range for ELR type capability if desired.

 

[NorthWesterner]

The scopes actually ship to the customers near the middle of the adjustment range, the Return2Zero hasn't been set. Mount the scope on the rifle, head to the range, and you'll have adjustment travel both up and down to get zeroed. Once zeroed, adjust the turret as needed and the R2Z sets itself. Pretty simple.

We do have multiple customers running a total of 40 MOA between base and mount and have no problem getting a 100 yd zero. This gives them most of the adjustment range for ELR type capability if desired.

Absolute perfection with 40 moa. 20 moa base and 20 moa spuhr mount. No problem with 100 yd zero. I could easily run 50moa total and still have 100 yd zero. Although at this point, I’m not sure I will ever need more than the 28.5 mils of up travel I have currently!

 

[Mountainbum]

Okay, that clarifies it. I was looking at it ass backwards. I did follow the afore mentioned steps. Now if I had 40 or 50 MOA base
On the setup, then the turret when rotated, would stop out at a higher mil setting do to being zeroed further down the vertical adjustment. Crap, it helps if you turn the soup can right side up if you want to read the ingredients ..... thanks for the clarification.
Having only 20 MOA base on my setup, explains the limited turret travel.

 

[Mountainbum]

The scopes actually ship to the customers near the middle of the adjustment range, the Return2Zero hasn't been set. Mount the scope on the rifle, head to the range, and you'll have adjustment travel both up and down to get zeroed. Once zeroed, adjust the turret as needed and the R2Z sets itself. Pretty simple.

We do have multiple customers running a total of 40 MOA between base and mount and have no problem getting a 100 yd zero. This gives them most of the adjustment range for ELR type capability if desired.

Thanks geb, that’s exactly what I needed to know. With that said, may try another 20 MOA