Picatinny rail for Cz527

[Effnjeff]

Does anyone have any recommendations for a picatinny rail for a Cz527? The lower the better.
Maybe someone has one for sale before I go searching for new.
Thanks in advance.

 

[Deanot2000]

Effnjeff, I got one from Optics Warehouse down I'm Devon a while ago which were steel and did the job of holding a solid zero. As you mentioned though, the problem is the height and how much more it puts the optic above the bore. I eventually sacked it and went to a set of Warne Maximal rings direct to the action.. not that cheap but rock solid even when (I speak from experience sadly) you take you eye off your shooter to scan behind you for Charlie and its slides silently off the icy bonnet of your dirty Ford Ranger onto the frozen ground. I aborted the outing and checked the zero... bang on, v surprised and v happy. Haven't looked back.......

Attached is a pic of my 527 with Leupold VX-3 with Warne mounts , rear mounted NV on and IR laser. The mounts are dealing with a lot and haven't let me down!!

All the best.

Deano

 

[ruger77]

Is that for a 3/8 dove tail or 11mm that’s the CZ 527 of course

 

[mealiejimmy]

CZ527 is a 15mm dovetail, and getting the scope low will usually result in the bolt being unable to fully open.
If it does open, there will be so little clearance between the bolt head and the scope you'll be having a bruised and bleeding thumb

Cheers

Bruce

 

[Sonicdmb73]

CZ527 is a 15mm dovetail, and getting the scope low will usually result in the bolt being unable to fully open.
If it does open, there will be so little clearance between the bolt head and the scope you'll be having a bruised and bleeding thumb

Cheers

Bruce

True but from experience not many Picatinny mounts are that low. Add that to the rail height and you are back at medium/high traditional mount height.
I have tried a few different ones and ended up with one bought from 25Sharps iirc. It sits very low on the dovetails and locks with grub screw’s.

 

[Effnjeff]

Thanks all for replies.
I currently use Sportsmatch mounts on my 527 but they leave the scope optically zeroed about 14MOA low, which is near the edge of the adjustment range of my particular scope, and I suspect tracking and zero retention performance are diminished.
I usually use pic rails on most my other rifles, along with Burris Signature mounts to optically align the scope at my zero range. However, those rifles have had drilled and tapped receivers (Steyr, Howa, Tikka), so the rail can be screwed directly flat to the receiver. The only thing to worry about is the screws coming loose, but that can be mitigated with Loctite. The 527 does not have a drilled and tapped receiver, so the rail grub screws simply push down at about 6-8in/lb on the top of the receiver creating a friction fit. This doesn't fill me with confidence as the rail could creep over time. My rife is only a 17 Hornet so hardly a big kicker, but I was wondering if there were any more secure solutions.

 

[valtratom]

I have the rusan rail on my 527 which is also a hornet , I’ve not fitted a scope to it yet but I’ve had a Yukon sighline 470 swinging off it and it’s never moved

 

[tommee]

Have had a Brittania rail on mine and was constantly moving zero, turns out it was cracked, due to the lack of material where it meets the dovetails. This was allowing it to float on the grub screws.
Went back to sports match mounts and all okay

 

[Sonicdmb73]

Thanks all for replies.
I currently use Sportsmatch mounts on my 527 but they leave the scope optically zeroed about 14MOA low, which is near the edge of the adjustment range of my particular scope, and I suspect tracking and zero retention performance are diminished.
I usually use pic rails on most my other rifles, along with Burris Signature mounts to optically align the scope at my zero range. However, those rifles have had drilled and tapped receivers (Steyr, Howa, Tikka), so the rail can be screwed directly flat to the receiver. The only thing to worry about is the screws coming loose, but that can be mitigated with Loctite. The 527 does not have a drilled and tapped receiver, so the rail grub screws simply push down at about 6-8in/lb on the top of the receiver creating a friction fit. This doesn't fill me with confidence as the rail could creep over time. My rife is only a 17 Hornet so hardly a big kicker, but I was wondering if there were any more secure solutions.

There’s always the option to use epoxy as well as the grub screw’s.
The ‘smith who I use showed me some I don’t recall the make. But it was designed for gluing mounts to rifle actions. You can remove it with a heat gun, but otherwise it’s impervious to solvents and mechanical forces of recoil etc.
The other option use sharp pointed screws. So they bite into the dovetail top. You will probably mark the action, but it will be more secure than friction alone.

 

[User00044]

I use a Britannia 10 MOA rail with low Leupold QRW rings . The rifle is never stored with the scope fitted , and zero is always bang on afterwards.
Scopes a Sightron Siii 6-24x50.

 

[flatliner]

I'm using a Barton Gunworks 10moa rail on mine.

 

[Home Loader]

I have both styles, please see pictures. They have both been used on 222, 223 and 7.62x39 never had any movement issues, the one which screws down from the top has 10 screws could ut be from Rift tools? The one with side clamps is a Contessa 0°.

 

[Effnjeff]

Thanks all again.
That Contessa is great and just what I'm after really. I prefer steel, and the side mounting with the locking stud seems more secure to me. It's not for sale is it?
I have Contessa rails on my T3s and they have been spot on.

 

[Henns]

I have the Contessa on mine, has been been great, so would recommend.

 

[User00044]

Britannia rail , slides on locks down and has recoil lug fitted . As per #10 .
I'd say I've sufficient bolt clearance.

 

[Effnjeff]

I decided to go for a Contessa rail in the end as I wanted a touch more scope height.
I had already ordered a DIP rail from the States which has just arrived. It's new and boxed and cost £60 and two weeks wait. Anyone fancy it for £50?