Change in vertical gives me winage change as well.

[clivej 0]

Went to the range today to zero my CZ varmint 223 1-9 twist from 55gr Federal V-Shok to 40gr Federal V-Shok. It shot 4 inches high by 1/2" left @200y 2 shots were 1" apart. I gave the turret 4 clicks of down (corrected here it should be 8 clicks down) (1 click = 1/4" @100y) and was spot on the zero but now it was 3" left. I shot 3 for a group and all were 3" to the left. I then dialed up 4 clicks and was back where I started at 4" high and 1/2" left.

 

The scope looks level as in the vertical reticle line looks to be on the centre line of the barrel when looking at the reticle with the stock up to my cheek.

 

Is it the scope would you think??? The scope is a Bushnell 4200 6-24x50 with the target turrets so it's not a cheap scope @£550 by any means.

 

Why did the windage change when I only dialed in down??? This I cannot understand.

Edited April 7, 2009 by clivej

[SNAP SHOT 194]

it could be shooter error ie. pull the shot a little.... or it could be that the wind shifted the bullet if there was a breeze..... Wind will play havoc on a zeroing session....

 

Go over the normal, rings bases tight, etc... Are you shooting with ammo you know is accurate.........?

 

 

snap.

[harry mac 1]

Went to the range today to zero my CZ varmint 223 1-9 twist from 55gr Federal V-Shok to 40gr Federal V-Shok. It shot 4 inches high by 1/2" left @200y 2 shots were 1" apart. I gave the turret 4 clicks of down (1 click = 1/4" @100y) and was spot on the zero but now it was 3" left. I shot 3 for a group and all were 3" to the left. I then dialed up 4 clicks and was back where I started at 4" high and 1/2" left.

 

The scope looks level as in the vertical reticle line looks to be on the centre line of the barrel when looking at the reticle with the stock up to my cheek.

 

Is it the scope would you think??? The scope is a Bushnell 4200 6-24x50 with the target turrets so it's not a cheap scope @£550 by any means.

 

Why did the windage change when I only dialed in down??? This I cannot understand.

Not for a moment sugesting you've done owt like this, but a mate of mine who's not exactly gifted in the brains department said he couldn't get his new air rifle zeroed and asked me to have a look at it. He said he couldn't fathom out the adjustments on the scope at all. He gave me the rifle and I just about pissed me sen laughing. He'd put the scope on the right way round, so far so good, but hed put the elevation turret on the side, with the windage turret to the top. However he still expected the pellets to go left or right when turning the windage adjuster, and up and down with the elevation. Poor lad. I turned the scope 90 deg and told him to have another bash.

[clivej 0]

There was a cross wind but not enough to give the result of a 2 1/2" move to the left and then be able to return to the same POI with 4 clicks of up put back in.

 

I only thought of checking with the Leupold Zero Point to see if it's the turrets on the scope moving the windage reticle line. I will check and get back

 

Ok I checked with the Leupold Zero Point and the windage is not moving when I move the elevation turret so it must have been the wind, but I still don't think it was.

Edited April 6, 2009 by clivej

[markbivvy 6]

is it a new rifle please.

[lxx73 0]

It shot 4 inches high by 1/2" left @200y 2 shots were 1" apart. I gave the turret 4 clicks of down (1 click = 1/4" @100y)

 

shouldn't your adjustments have been 8 clicks down and 1 click right as 1 click = 1/2" @200y or was you adjusting to keep 2" high at 200?

Edited April 6, 2009 by lxx73

[dicehorn 38]

My opinion is not to try and sort this obvious problem out at 200 yards - although in the great scheme of things its not a great distance, nevertheless you may be building human error into the problem.

 

Suggest you bring your target back to 50 yards where you would normally expect a centre fire to group sub .5MOA and see if the problem persists.

 

I assume you have been successful with your grouping previously at 200 yards and this problem has only now started to happen.

 

Peter

[Mr_Logic 5]

At 200 yards, any cant will affect the scope, and could easily knock it off this much. It is also possible that the scope is duff - have you previously proven it on another rifle?

[clivej 0]

It shot 4 inches high by 1/2" left @200y 2 shots were 1" apart. I gave the turret 4 clicks of down (1 click = 1/4" @100y)

 

shouldn't your adjustments have been 8 clicks down and 1 click right as 1 click = 1/2" @200y or was you adjusting to keep 2" high at 200?

 

Sorry your correct @8 clicks.

[clivej 0]

Thanks for the info, I'll try it again @100m on a still day.

 

But after I had zeroed it in I was getting sub 1" groups @200m one was a tad under 3/4" and other 7/8" rest were around the 1 1/2" mark not bad from a CZ 223 varmint gun.

[dwighet 1]

Its the wind clive :stupid: :stupid: :stupid:

[ReneZ 0]

You've got a good rifle, no worries. Is it possible that you tilt the rifle slightly? Cheers, Rene.