Just mounted a Leupold 6.5x20EFR on my CZ. Used 11mm Leupold z rings. When we tried to zero the gun it was shooting way right. You can't dial it far enough left to bring it on target? It bottoms out. Rings appear to be seated properly? Anyone got any suggestions or had any similar problems?
Thanks,
Whiskeyralph

Sounds like your screwed! I'll give you 400.00 for the scope. I'm sure someone will buy your gun for less than you paid for it.

JUST KIDDING!

I would offer some advice but there are others who know more about your gun and rings than I do. Don't worry I'm sure help is on it's way. If no help arrives PM me.

Byron

About the only thing you can do at this point is using an optical collimator to bore sight a rifle so that you can see what you are doing.

Turn one of the rings around or put both rings on the opposite side that you have them now and see what happens, is a trial and error kind of thing but works in most instances.

The other solution is to send the rifle to (Marvin Pearson) metalhead and have him make a set of his custom rings for your rifle and that way you will be sure of having the best and done right as well.

First try switching the rings, then turing them to see if that changes the POI. If it doesn't, there are a few different ways to go.

Millet adjustable rings and SK. A guy we shoot with had to use the SK ones on his Anschutz 1712 for the same reason.
http://www.scopemounts.com/

If it's so far off that you can't even adjust it to be on target, it should be far enough off that you can see where the problem is if you put the rifle in a rest and back up from it a couple steps. Unless the barrel is totally misaligned with the receiver enough to be obvious, I'd guess the rings aren't mounted quite right or aren't made correctly. Either should be easy enough to see if you take a long careful look. It's also possible that it's the scope, but not very likely. If the receiver/barrel look to be aligned properly and the rings looks to be made well and are mounted well (take them off to check thickness of rings all around and relative to the bottom that attaches to the dovetail, etc) but it still won't line up correctly, try a different scope. Marvin's rings are the best of the best and are great to get, but there's a big enough problem there that it needs to be diagnosed and fixed first.

I tried switching the mounts from front to rear and went from being straight right to low left. I have the adjustment knobs just about in the middle of the range for both windage and elevation. I think my next experiment will be to move them back to the original position but turn one of the rings around and see if that just moves it left or is at least a little closer where I will still have some room to go both ways on the elevation and windage. What do you think?

If you've got other rings or another scope to try (separately, of course), then it sure would speed up the troubleshooting and tell you where the problem was. If all you changed that time was the mounts and it went from way right to low left, sounds like the mounts aren't made correctly or aren't mounted correctly.

Sounds like it could be a problem that is often encountered with this type of rifle (european) and mount (american) combination. The rifle (CZ, Anschutz, whatever) has 11mm rails and sometimes an oddball rail cut angle. The rings are designed for a 3/8 " American rail. These and several other styles of rings are "fixed" on one side and the other side moves to pinch or clamp the rail. Because 11mm is more than 3/8", when you clamp it down, it's tight,straight, and.....off-center. More than likely, when you switch one ring it will not be nice to your scope, but may work (but I don't think I'd do it). If you switch them both, you are likely to be off the other way. The solution is a set of rings that clamp from both sides at the same time (BKL). Did I mention BKL?

Yes you did mention BKL... can't imagine why.
send me a pm or email.

Innocent Mary

Isn't BKL always the first choice? My only beef with them is they won't directly attach to a Weaver base.

Whiskey, I have a set of Wayne Merrier's mounts to go from the 11mm dovetail to weaver style mount and then I use a set of Millet windage adjustable rings. Wayne's mounts have .016 slope built into them so your Leupold EFR should be centered in it's adjustments. I think Mary can get you a BKL canted base and then you can get whatever height Millet ring you need from Dick's. I tried the Millet rings that clamp directly to dovetail and they were fine until I stuck the gun in a guncase and it got banged around which is ok as long as you obey the 11th commandment, "THOU SHALL ZERO ON MATCH DAY". Hope this helps.

With the bottom halves of the rings in place, rest a longer piece of material in the cradle to check alignment. ( a round piece that will self center in the bottom of the cradle) any misalignment should be easy to spot. Jim

Sounds like the rings are suspect.

My CZ was straight and true with both BKLs and cheapie BSA air rifle rings.......

Is it a CZ-452 American? If so, it has a 3/8 dovetail.

My understanding is that BKL's will fit either dovetail - a really good reason to keep a spare set handy!