Well to my surprise my customized CZ 550 was jacked up trying to get a scope to zero. Shooting very low and ran out of adjustments. Shot with peep sight tilll now and never noticed the issue. Since this gun is listed on my OZimport permit I was getting a bit nervous. After calling Morris at Alaska arms I ruled out rings and was thinking my new scope was trash. I called Wayne at AHR and figured if it was the rifle he would know. Well he did know-there is a known problem. He suggested calling triple river asap as they supposedly have a fix. Well I did and Megan calls me back, says send it in with scope and they will have it back in a week. So off it goes overnight today. They were very good fixing my 505 and looks like they will get this taken care of. I'll update upon return. Glad I listed 2 guns on permit that was a good move just in case. So if anyone has one of these guns and never mounted a scope do so before dropping bucks on it and send it in. I asked what the problem was out of curiosity she mentioned tuning and it's proprietary so can't talk about it. Well ok as long as it works I don't care...TBC.....

Gun is on way back Megan says it's fixed. Pretty interesting they won't tell what the problem or fix is

I had the same issue with my CZ550 in 416 Rigby.

No issue when I had a Leopold 1x6 on it. When I changed to my Trijicon 1.5x4, I ran out of adjustment and it was shooting low. I was getting ready to take it to RSA on my first safari back at the time and needed to sort it out quickly. My solution? Very low tech. I took a spent 22LR casing, mashed it and folded it over, then placed it under the rear ring and integral base to give it some additional elevation. It was enough to bring things back into alignment and get me through the hunt. I've since taken the scope off completely and just used it as an open sighted rifle. Maybe I'll contact these folks and get it sorted out for good.

Hmmmm sounds like a CZ550 I have in 500AR. Thing was shooting a degree low. Had a Smith rebed it. Now it is on 45 MOA low! Ha Ha I put a EGW plus 20 picatinny rail and Burris XTR rings with 25 MOA plastic inserts. Scope is high but it works with trifocals! I am sure the receiver is minus 20 MOA. May I ask the cost? I have thought about having mine rebarreled but if this is cheaper.

And so we see that image-movement does not solve all problems. I am all for laterally adjustable mounts and the odd shim when required - but only so I don't need a space-occupying lesion bouncing around inside the scope. Spring-suspended erector tubes and .458s make a recipe for disaster IMHO.

Really sucks that no one will say what the problem was.

Mine will be back thursday. Megan says plenty of travel now. I'll let you know but I'd send it back

quote:

Originally posted by Todd Williams:
I had the same issue with my CZ550 in 416 Rigby.

No issue when I had a Leopold 1x6 on it. When I changed to my Trijicon 1.5x4, I ran out of adjustment and it was shooting low. I was getting ready to take it to RSA on my first safari back at the time and needed to sort it out quickly. My solution? Very low tech. I took a spent 22LR casing, mashed it and folded it over, then placed it under the rear ring and integral base to give it some additional elevation. It was enough to bring things back into alignment and get me through the hunt. I've since taken the scope off completely and just used it as an open sighted rifle. Maybe I'll contact these folks and get it sorted out for good.

They do it free under warranty

quote:

Originally posted by Live Oak:
Hmmmm sounds like a CZ550 I have in 500AR. Thing was shooting a degree low. Had a Smith rebed it. Now it is on 45 MOA low! Ha Ha I put a EGW plus 20 picatinny rail and Burris XTR rings with 25 MOA plastic inserts. Scope is high but it works with trifocals! I am sure the receiver is minus 20 MOA. May I ask the cost? I have thought about having mine rebarreled but if this is cheaper.

Quite the mystery I will examine it when it returns to see if there are any clues

quote:

Originally posted by RIP:
Really sucks that no one will say what the problem was.

She said to send it in with scope and rings so they can make sure the system works before leaving the shop. Swaro 1-6i ee and alaska arms rings on mine. At 100 yards would of been several feet low at maximum uptravel on scope feet low so some voodoo magic for sure

quote:

Originally posted by RIP:
Really sucks that no one will say what the problem was.

RIP I think the issue is the way the top of the rear portion of the receiver is milled for the integral base. Just my guess but I suspect it's milled just a little too low. As mentioned in my fix, a small shim was enough to correct the issue, albeit a temporary fix. Interesting thing is that mine had quick detach rings and placing the shim back in the same place always returned it to zero. Not an ideal situation but it worked.

I'll bet the correction has to do with adjusting the height of the front portion of the receiver.

Front yes because my apeture on the rear base worked perfectly......

quote:

Originally posted by RIP:
Really sucks that no one will say what the problem was.

That's because 'Miss Megan' doesn't know what the problem was and neither does the alleged DGR 'smith it was handed off to.

When it comes back NOT fixed with the same problem, or even a new one (which happens with modern factory warranty work - fix issue A; create issue B), your remedy will be to immediately contact Wayne @ AHR and get the rifle to him.

Wayne will be able to diagnose the problem and competently fix it without creating a new one.

Negative ghost rider. I have been in contact with Wayne since I found this out and he is eagerly waiting for the answer too

In fact he was the one who told me to send it back to them.......

Crooked receiver threads are the problem.
Re machining of the threads and faces concentric and perpendicular to the bore line of the receiver will
Correct the problem with the receiver. However this negates the reuse of the original barrel with the newly machined or otherwise "blue printed" receiver. This work is normally done in conjunction with a new higher quality barrel and at this point a whole new build.

Simple and effective fixes proprietary, spoken or unspoken may include bending of your rifles barrel.
Bending the barrel just enough will get the the bullets going thru the paper that agrees within the comfort range of the scope. The open sights will also need to be re regulated after the barrel is bent.

Could it be that the proprietary fix is to bend the barrel?

that sounds not very good. Interesting to see.

I had one in 458 Lott with the same issue. We were told it was a bent barrel.

quote:

Originally posted by Timan:
..include bending of your rifles barrel.

Could it be that the proprietary fix is to bend the barrel?

This was my first thought -- or some weird, mandrel involved, torquing of the receiver in the vertical

then again "bending" or straightening of barrels is a pretty common thing with hammer forged barrels

http://castboolits.gunloads.co...Barrel-straightening

Well I assume if it shoots as advertised and doesn't look wierd should be fine....I'll know Thursday

quote:

Originally posted by gunslinger55:

I have been in contact with Wayne since I found this out and he is eagerly waiting for the answer too

While that appears to be the only positive news in this depressing DGR affair, Wayne's waiting may well be in vain since what we might call the "factory's diagnosis" will - and quite often does - differ from Wayne's diagnosis once he's received a "problem" CZ rifle and has had a chance to go through it.

Good luck though.

Wayne is well aware of these issues. If I wanted a whole new build I'd go to him he also was the one who modified this rifle in the first place. I'm thinking the front receiver scope mounts as the peep worked fine. But we shall see. In anycase this rifle is going to australia soon so no real time to rebuild it

Rifle zeros now not sure of what kind of voodoo magic was used. No obvios signs of repair. I will pull stock and see if I see anything

quote:

Originally posted by gunslinger55:
Rifle zeros now not sure of what kind of voodoo magic was used. No obvios signs of repair. I will pull stock and see if I see anything

Good to hear.

Me and wayne leaning towards the barrel bending fix. No other obvious repair

Well gun shoots good just all loads shoot to different point of impact. 500 woodleigh hydro solids shoot lights out. Recoil with all liars very severe.

Frontsight band and sight moving forward under recoil. Recoil pad ripped off screws from CZ synthetic stock. So far scope and rings looking good.

Sending back to Wayne to get r and r'd asap. If this wasn't on my import permit I'd shelve it but too late now. Lesson learned. My winchesters have no such issues quite interesting

I have a tool box for scope mounting.

It has every conceivable screw driver one might need.

It is from ifixit.

I cut open a Pepsi can, into strips about 3x1 inch and keep them in that box, specifically for this sort of problem.

Just cut the required size and you are done.

Another reason not to buy CZ bigbores.....

quote:

Originally posted by gunslinger55:
* * *
Sending back to Wayne to get r and r'd asap. If this wasn't on my import permit I'd shelve it but too late now. Lesson learned. My winchesters have no such issues quite interesting

Dude, hate to say I told you so but ... well, you know the rest.

Shipping it off to the Wayner for a repair job ASAP should've been your first move, not your last, especially at the 11th hour before departing for the Big Hunt.

That said, Wayne's a great talent, so good luck.

quote:

Originally posted by JTEX:
Another reason not to buy CZ bigbores.....

No kidding, really?

It was a less-than-straight barrel that they tuned/bent back into alignment. As Jeffe says, tuning a barrel this way is no entirely unusual. It's usually done before it ships though.

I went through this twice a few years ago with CZ.

My experience with CZ and crooked barrels

It's kinda surprising they are still having this issue pop up.

Interesting good idea

quote:

Originally posted by Saeed:
I have a tool box for scope mounting.

It has every conceivable screw driver one might need.

It is from ifixit.

I cut open a Pepsi can, into strips about 3x1 inch and keep them in that box, specifically for this sort of problem.

Just cut the required size and you are done.

Unfortunately it was waynes sight coming off. He fixed it then it was lost by UPS for 10 days (2day air). Thought it was stolen then magically showed up to everyones (including UPS) surprise. Added a pound with mercury reducer and put AHR trigger in just to be sure. Gun is ready to go. Shoots woodliegh cup points MOA or less and cor bon TSX knock off just as good and to same point of aim. I noticed the federal TBBC and Hornadys loads shoot 4"+ higher same point of aim quite interesting. So far increased weight made noticeable difference in recoil abuse.Scope and alaska arms rings holding up so far. Really need an extension ring to get scope farther forward (extended eye relief Z6) but not sure any one makes them. So far My forhead is safe. 10 days to go before trip

quote:

Originally posted by A.J. Hydell:

quote:

Originally posted by gunslinger55:
* * *
Sending back to Wayne to get r and r'd asap. If this wasn't on my import permit I'd shelve it but too late now. Lesson learned. My winchesters have no such issues quite interesting

Dude, hate to say I told you so but ... well, you know the rest.

Shipping it off to the Wayner for a repair job ASAP should've been your first move, not your last, especially at the 11th hour before departing for the Big Hunt.

That said, Wayne's a great talent, so good luck.

quote:

Originally posted by JTEX:
Another reason not to buy CZ bigbores.....

No kidding, really?

Very interesting. Would love to see how they do that no marks on finish. Guess I know what year my gun was made LOL

quote:

Originally posted by mrjulian_1970:
It was a less-than-straight barrel that they tuned/bent back into alignment. As Jeffe says, tuning a barrel this way is no entirely unusual. It's usually done before it ships though.

I went through this twice a few years ago with CZ.

My experience with CZ and crooked barrels

It's kinda surprising they are still having this issue pop up.

Good to hear this, finally.

Good luck on your hunt!

quote:

Originally posted by gunslinger55:
... Added a pound with mercury reducer...

Do you intend to take the rifle overseas? Last I heard many airlines wouldn't carry rifles with mercury in them.

How would they know that? I've never heard that one. That going too far but if anyone asks it's lead

quote:

Originally posted by sambarman338:

quote:

Originally posted by gunslinger55:
... Added a pound with mercury reducer...

Do you intend to take the rifle overseas? Last I heard many airlines wouldn't carry rifles with mercury in them.

that's a new one -- got anything to cite or refer us to? as it's in a welded tube, embedded in the stock, how could it be found?

mercury BULLETS could be an issue --

I can't direct you to anything but at one stage I believe there was much discussion of it. A Customs officer at Melbourne airport was one person who mentioned it to me.

I'm not even sure what the supposed danger is, except that it involves a liquid. I'm not sure if they put rifles under the X-ray, but they seem to see everything inside your handluggage.

Being that it is checked liquids (non dangerous goods) are exempt at least on every american airline I know of. Carry on there is a 3 oz limit. Plus a mercury reducer is less than 3 oz I bet anyways. Anyhow you are carrying live ammo and they are worried about a checked recoil reducer? Sound like that person was about as smart as our TSA agents

Good luck with it all. Hopefully no one will ask.