CZ Evo Accuracy issues

[ARCHIVED THREAD] - CZ Evo Accuracy issues

Posted: 12/23/2018 6:58:32 PM EDT

Has anyone had issues with their evo accuracy. Took min out for the first time toady and I couldn't hit the broad side of the barn at 10 yards. Below are some photos of the groups I was getting. I was aiming at the relative center at the center of the targets. Regardless of the POI the groups are still every where.

Photo Below: WWB 115 gr, Iron Sights, bench rest

Photo Below: WWB 115 gr. Vortex Red Dot, bench rest, Shot 7 and 8 where aimed at upper right diamond

Photo Below: Federal 115gr. Vortex Red Dot, bench rest

Photo Below: MP5K, Both Fedeal and WWB, used for control as I though ammo was bad, free standing

Posted: 12/23/2018 7:13:42 PM EDT

[#1]

My evo shoots fine, but they do have horrendous triggers in stock form. Have you had anyone else shoot it?

Posted: 12/23/2018 8:05:46 PM EDT

[#2]

Take the muzzle device off and make sure the 1/2x28 thread protector hasnt come loose inside of it. Occasionally they work their way off and rattle around inside the muzzle device and bullets can strike them.

Sven
Manticore Arms

Posted: 12/23/2018 8:06:05 PM EDT

[#3]

Did you check the 1/2x28 thread protector under the factory flash suppressor? More often then not it's lose and obstructing the bullets path.
One of the few parts cz didn't lather in loctite.

Posted: 12/24/2018 6:01:28 AM EDT

[#4]

It’s also known to prefer the heavier loads like 124 and 147gr so try that.

Posted: 12/24/2018 9:40:09 AM EDT

[#5]

Quote History

Quoted:
It’s also known to prefer the heavier loads like 124 and 147gr so try that.

View Quote

This was my experience.

I tried shooting 115gr at 50 yards once and couldn’t tell where I shot.

Switched to 158gr and everything was inside the target.

Posted: 12/24/2018 1:23:55 PM EDT

[#6]

Same as the others, switch to a heavier grain ammo. I shoot 147 grain HSTs and 147 grain reloads exclusively out of mine, and I get pretty good groups for a PCC with a 3.25 RMR at 25 and 50 yards with a suppressor.

Posted: 12/25/2018 1:02:59 AM EDT

[#7]

Quoted:
Has anyone had issues with their evo accuracy. Took min out for the first time toady and I couldn't hit the broad side of the barn at 10 yards. Below are some photos of the groups I was getting. I was aiming at the relative center at the center of the targets. Regardless of the POI the groups are still every where.

Photo Below: WWB 115 gr, Iron Sights, bench rest
https://i.imgur.com/1rQlGrIl.jpg

Photo Below: WWB 115 gr. Vortex Red Dot, bench rest, Shot 7 and 8 where aimed at upper right diamond
https://i.imgur.com/WC6r2TAl.jpg

Photo Below: Federal 115gr. Vortex Red Dot, bench rest
https://i.imgur.com/6cVBvXPl.jpg

Photo Below: MP5K, Both Fedeal and WWB, used for control as I though ammo was bad, free standing
https://i.imgur.com/h753Oyhl.jpg

View Quote

Those groups don't look too bad for not being sure where exactly you're aiming

Posted: 12/25/2018 11:01:09 AM EDT

[#8]

In for update

Posted: 12/25/2018 4:10:31 PM EDT

[#9]

Quote History

Quoted:
Did you check the 1/2x28 thread protector under the factory flash suppressor? More often then not it's lose and obstructing the bullets path.
One of the few parts cz didn't lather in loctite.

View Quote

This

Posted: 12/25/2018 11:06:21 PM EDT

[#10]

Quote History

Quoted:
In for update

View Quote

Going to be a while until I can make it to the range.

Posted: 12/25/2018 11:40:18 PM EDT

[#11]

Quote History

Quoted:

Going to be a while until I can make it to the range.

View Quote

Does that mean you confirmed your thread protector is on and tight?

Posted: 12/26/2018 3:08:21 PM EDT

[#12]

Second post nailed it, also try heavier ammo.

Posted: 12/26/2018 3:22:43 PM EDT

[#13]

I have taken my Scorpion to defensive carbine classes and have no issues with accuracy. I have used 115 gr through 147gr without any issues out of my Manticore K-Barrel. (5.1 inches if memory serves me) The gun is 100 percent suppressed and I have shot 10x10 inch plates from 50 yards repeatedly from an unsupported standing position without missing under pressure of timed shots. At 10 yards even wolf 115gr bimetal rounds do not give me fits based on your targets. I even passed the 5 x 7 inch card test (10 yard) at the end of the class under timed shooting with magazine reloading.

Posted: 12/27/2018 1:00:44 AM EDT

[#14]

Quote History

Quoted:

Does that mean you confirmed your thread protector is on and tight?

View Quote

The thread protector was loose or at least I thought it was. Goal is to make it to the range Thursday as I just had a tri lug mount installed.

Posted: 12/28/2018 12:22:45 AM EDT

[#15]

Looks like the issue was the thread protector. Ended up having a tri lug installed yesterday.

Top two upper diamonds are bench rested aiming at top portion of diamond. Bottom two are rapid fire standing up. Target at 15 yards. Probably need some more practice with that trigger.

Posted: 12/28/2018 10:09:53 AM EDT

[#16]

Looks better. No visible damage to the thread protector?

The HBI trigger spring kit will help a bit.

Posted: 12/28/2018 10:35:29 AM EDT

[#17]

Get the prementioned HBI spring, along with their replacement flat trigger shoe followed up with some gentle polishing of the trigger pack parts and you will find the trigger to be pretty good. At least that was my experience.

Posted: 12/29/2018 3:46:40 PM EDT

[#18]

Glad it got sorted out. I guess I’m in the minority here. My early model Evo shoots 115gr great. Like at 10yds offhand even with irons it’s doing about golf ball sized groups. I’m sure mechanically it could do much better rested with an optic. This is the first I’ve heard of light grain ammo shooting poorly in the Evo, maybe I got lucky with mine.

Posted: 1/1/2019 8:10:34 AM EDT

[#19]

Quote History

Quoted:
Looks like the issue was the thread protector. Ended up having a tri lug installed yesterday.

Top two upper diamonds are bench rested aiming at top portion of diamond. Bottom two are rapid fire standing up. Target at 15 yards. Probably need some more practice with that trigger.
https://i.imgur.com/0GquGlUl.jpg

View Quote

OP, glad you found the culprit. However, these Scorpions should do better than that. Starting out, both guns did ok, equipped with 1x dot, from the bench with sandbags yielded 1-2" 25 yds groups with my hand loads of 124 gr JHP over 4.0 of Tightgroup. After switching to Sellier & Bellot 115 gr FMJ and Federal 9BPLE +P+ JHPat, they shot clover leafed groups. The Sellier & Bellot published data is 1230 fps for 115 gr. It might be worth it to try some S&B ammo.

16" Evo carbine- S & Bellot 115 gr:

5.3" Evo pistol - Federal 9BPLE+P+:

Posted: 1/1/2019 12:55:22 PM EDT

[#20]

Quote History

Quoted:
Get the prementioned HBI spring, along with their replacement flat trigger shoe followed up with some gentle polishing of the trigger pack parts and you will find the trigger to be pretty good. At least that was my experience.

View Quote

A trigger polish is mandatory I think, but I am spoiled by ALG and Geissele triggers. Shooters Element does a pretty good polish job

[ARCHIVED THREAD] - CZ Evo Accuracy issues

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