Trying to zero new CZ 9.3.62. Using Leupold 2.5x8x33 in Talley mounts. POI is 8" low at 25 yds. No adjustment remains. Talley measurments and outside receiver measurements seem ok. Called Talley. They suggested that bbl or receiver is out of alignment. State it is common problem with CZ. What do you all say. Have yet to hear from CZ. Seems the power is out and they are closed. Thanks for any help.

I don't have a CZ (they don't make left-hand centerfires), so bear with me. Are the rings the same height, or is one taller than the other? If so, is it possible that you have mounted the rings incorrectly (i.e., rear base on the front, front base on the rear)?

George

George.
Thanks for a quick response.
The tally rings have a tit that fits the rear slot in the receiver, I do not think you can mount them wrong. But if there was a way I would. I am hoping someone else had a similar problem and received a fix.

Because of the integrated bases on the CZ you can't get them backwards. It has a little key on one side that prevents that. I ask this sheepishly, but have you tried another scope on the gun? You might be able to make up some of that by shimming it, but not as much as you need. I've had to shim several CZ's but it was typically because the scopes had large objectives and needed high rings to clear, which causes you to run out of elevation adjustment.

Worst case scenario, call CZ-USA and talk to their gunsmith Mike. He's a pretty good guy. He might be able to help you.

I sent them an e-mail. Will probably call tomorrow. Do not see how I can shim a Talley. I checked the specs on my scope and it has more adjustment than most of the Leupold scopes. It has a 33mm objective and does not sit all that high. I have a 56, 44 and 50 objective on other rifles and have no problem. Figure I am at worst case now. Am not interested in seeing how much I can spend to get it zeroed. Maybe the previous ones spoiled me. I would like to check and see if bbl and receiver are square but do not have tools to do that. Am interested though, Thanks.

I have the same problem with my Brno 602(same action) in 375 H&H. Mine also shoots low after running out of adjustment in the scope. Havn't done it yet but am going to machine some metal off from under the front ring of the CZ mount where it screws to the mounting block that attaches to the dovetail on the receiver. Actually am going to take some off the back mount also as the scope is too high anyway, only will take more off the front one.

Called CZ. They said send it back, they will mount scope,zero and return to me. Interesting. Woder what the fix is. Thanks to all for responses.

quote:

Originally posted by hart:
I have the same problem with my Brno 602(same action) in 375 H&H. Mine also shoots low after running out of adjustment in the scope. Havn't done it yet but am going to machine some metal off from under the front ring of the CZ mount where it screws to the mounting block that attaches to the dovetail on the receiver. Actually am going to take some off the back mount also as the scope is too high anyway, only will take more off the front one.

MAKE SURE that you lap in the rings after doing this. You will have to lap them into FULL CONTACT when doing this, or you will get kinks in your scope tube!!! Sinclair Int. scope lapping kit.

Woodsracer, I plan to clamp the rings to a 1" bar and lap the mating surface between the rings and the top of the mounting blocks that clamp to the receiver dovetails.

I just finished wrestling with this --

1) got mounts (CZ mounts were backordered at Midway) -- mounts were Millet.

2) Mounts shot low, even when I ran out of verticle range on my Nikon Monarch (older model)...

I called CZ at this point -- they said to send it back. I sent in my warranty card (like we're all supposed to when we purchase), and decided to wait for CZ rings.. in the mean time...

3) I tried using a couple thicknesses of aluminum foil from a pie-plate -- it was enough to put the scope on, but I wasn't seeing great performance. Groups were not what I would have hoped for/expected.

4) Finally, CZ rings came, they mounted just right.

I was able to use my boresighter to register previous zero point, and put it back with the CZ rings. The mounts put the scope back ALMOST where it had been with the Millet+pie-plate rings, which gave me the chance to see if the mounting process had screwed up my scope. The zero moved through the boresighter view smoothly as I turned the elevation and windage screws. Now I have to get it to the range to check zero, and see if the scope is holding zero, giving tighter groups, etc.

My sense is that there is a lot of wiggle-room with mounts on the CZ's, which is worrisome because they can be hard on scopes (lapping rings, etc) if things weren't right to begin with.

Dan