Range Report - CZ 527 / QD Ring functionality

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DTM5

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Hi All;

So, today's mission was to determine the impact of using QD rings on my CZ 527 carbine in 7.62x39. In particular, whether or not the rifle would 'return to zero' at 50m after removing and reinstalling the optic using Leupold QD rings.

Why QD vs. permanent rings? Because this handy little carbine has open sights as well, and hey they are sometimes fun and useful to use! Being able to remove a scope makes transport and storage easier. And its damn cool. :cool:

This set up is designated to be my 16 year old's deer rifle this season. The gear is as follows:

> CZ 527 Carbine / 7.62x39mm
> Leupold VX-6 1-6x24 30mm scope
> Warne 30mm Medium QD rings (specifically for CZ's 16mm integral rail)
> Federal Power Shok 123gr 7.62x39 ammunition

Here is the setup:

1UlhgsJ.jpg


The rifle / optic was sighted in several weeks ago using another type of ammo (Hornady).
I kept the procedure pretty simple.....loaded up the Federal ammo, fired a three shot group, using a steady rest (but by no means a 'lead sled')
The result:

rpX92IS.jpg


The red square is 1" x 1". So, I was very pleased with how the ammo performed on the first group.

Next, I removed the scope, and then reinstalled it. Then I Took three more shots. Would it return to zero? Or at least hunting capable accuracy?
Here is the result of the next three shots.

3vZiO1a.jpg


Two conclusions:

One - The ammo agrees with the gun; Each group was approx 1/2" in size off of an decent rest at 50m. I don't doubt that with a better rest, removing most human error, the group would be tighter. Indicating the gun and ammo shoot more than straight enough for hunting at the ranges I'll be looking at.

Two - Removing and reinstalling the optic with the QD rings resulted in the group moving approx 1/2" at 50m. More than satisfactory for its intended application. And frankly quite impressive as there is some human impact on the group.

Summary - The Warne QD rings and CZ 527 are a winning combo. I'm excited to take it out to 100m with a super firm rest, to see what this rifle / ammo is capable of.

Cheers!
 
thanks for the post!
I ended up having to install the front ring with the QD lever on the left since the scope would be on max windage deflection when both as levers were on the right. Seems on other boards this is a common issue. Not sure if there's a trick to avoid this, even though it's just a cosmetic annoyance.
 
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Thanks for that, I’ve been thinking of qd rings for the kids 527 as well. Were you fussy about technique? Like when putting the scope back on get the rings just snug then push the scope forwards against the recoil lug then tighten fully?

And if I can derail your thread a bit: how is the ocular bell to bolt handle clearance with your setup?
 
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interesting, i would like to re test my results an perhaps yours by re installing the scape in a similiar fashion, eg, front first - or rear tight first... an see if that altered.... im thinkin perhaps the either difference can be predicted to be in the lower, or the higher change? maybe??

nice work,good shooting there
 
Good shooting and fine results, but it's a test of - One. Repeatability must be measured with a few repeated tests, and you really can't draw a conclusion from a one time effort. The "test' is interesting, but not very meaningful. If for instance a scope was removed/replaced 5 or better year 10 times, it would tell the shooter how reliable it was, not just what happened after a one time event.
 
Longwalker said:
Good shooting and fine results, but it's a test of - One. Repeatability must be measured with a few repeated tests, and you really can't draw a conclusion from a one time effort. The "test' is interesting, but not very meaningful. If for instance a scope was removed/replaced 5 or better year 10 times, it would tell the shooter how reliable it was, not just what happened after a one time event.
Click to expand...

Excellent point Longwalker.

I ran the test with 3 removals using Warme QD rings on a Ruger African 375 Ruger. The test was 3rd group, remove scope, 3rd group, remove, etc, for a total of 4 3rd groups with 3 removals at 100yds. Very repeatable. I just checked it again with a better load for that same rifle (only 1 removal this time), the group centers were exactly the same.

I would definitely run the test more than once on each rifle I was using QD's to ensure repeatability.
 
mbogo3 said:
Not sure why you would want to remove the scope in the first place?
Click to expand...

Scope is damaged in the field and you have to use irons.

You have more than one scope for that rifle.

Lenses becomes covered with ice fog so you switch to irons, then as the day clears you switch back to the scope.

Irons are sighted for short range with low velocity ammo and the scope is sighted for long range and high velocity ammo.

Shooting with irons on the range because you want to, then swap back to the scope.

Cleaning the rifle in an ultrasonic cleaner.

Come to think of it, why wouldn't you want to be able to conveniently remove the scope then replace it?
 
Yes, all good reasons Boomer and my thoughts exactly. I have QD mounts on all of my hunting rifles except one varmint rifle and one other specialty use rifle. And a couple of scopes for more than one. Adds versatility. I sometimes hunt with a big scope with heavy reticle and big objective for early morning and late evening hunts from a tree stand or blind, and switch to a small light low power variable for sneaking through the bush at mid day.
 
Follow up to my post re: Repeatability.....have had the scope on / off about 1/2 dozen times. Had it out in deer season for a bit. Still shows the same group size, although the group slightly wanders with each re-mount (by about 1/2 an inch) Cheers.
 
had always good results with leupold qrw and alaskan quick detach llc. the warne as well but i lost faith in them after some parts went loose in too many occasions ...
 
for interest sake, i Detatched the zeiss terra off the Abolt , send the barrel away, looks like it was twisted off cut an fluted an then twisted back on not quite the same going by the line anywho, i reinstalled the bases backwards to previous, an attatched the QD rings with scope in it still, it sat a half inch or so forward from comfortable (no suprise- looking at previous photos its different) anywho- it shot 130gr ppsn which it was sighted for previously, easily into 2-3 inches from the Bull. couldnt believe that-
 
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