The Original CZ Forum

CZ PISTOL CLUBS => CZ85, 85B, & 85 Combat => Topic started by: techguy on November 23, 2008, 03:54:13 PM

Title: Brand new CZ 85c and couldn't hit side of barn
Post by: techguy on November 23, 2008, 03:54:13 PM
I took my brand new 85c to the range today, couldn't seem to get it right.

This is my first pistol with LPA sights, can someone please post some pointers on how to properly sight them?

Also, the manual doesn't really touch on adjusting the LPA sights.  Does turning the adjustment screw towards the R (right) move the sight to the right or the bullet to the right?

My gun seemed to be about 2 inches off at 15 yards.  And although I tried some field adjustments, could not see an improvement.

Is the 85c sensitive to type of ammo?  I am running the academy branded monarch (Privi) brass case FMJ 9mm.

Everything I read says these should be very accurate pistols.  I went to the range last week with my new cougar and was able to drive nails with the thing.   My shooting is usually very good, by man am I frustrated today!!!!!!



Title: Re: Brand new CZ 85c and couldn't hit side of barn
Post by: rinco76 on November 23, 2008, 04:45:23 PM
Is the 85c sensitive to type of ammo?

I know mine shoots best with S&B 115 grain bullets. It doesn't seem to like any of the 124 grain factory ammo.
Title: Re: Brand new CZ 85c and couldn't hit side of barn
Post by: techguy on November 23, 2008, 05:01:36 PM
I was shooting 115.

Strange, this is really disappointing.  Hopefully it is just the LPA's
Title: Re: Brand new CZ 85c and couldn't hit side of barn
Post by: Canuck44 on November 23, 2008, 05:16:55 PM
No offense but I suspect it is you not the gun.  Before I started adjusted the sights I would get down on a bench rest and try some targets out to 10 and 15 yards.  Once you are sure where the gun is shooting, then adjust your sights.  You may find it is just a case of getting used to the trigger and grip.

I would also go back and try some 124/125 gr bullets.  T^hat weight is ideal for the rate of twist in the CZ barrels.

Take Care

Bob
Title: Re: Brand new CZ 85c and couldn't hit side of barn
Post by: techguy on November 23, 2008, 05:27:13 PM
No offense but I suspect it is you not the gun.  Before I started adjusted the sights I would get down on a bench rest and try some targets out to 10 and 15 yards.  Once you are sure where the gun is shooting, then adjust your sights.  You may find it is just a case of getting used to the trigger and grip.

I would also go back and try some 124/125 gr bullets.  T^hat weight is ideal for the rate of twist in the CZ barrels.

Take Care

Bob

Could very possibly be me, and no offense taken.   The reason I was zeroing in on the sights is that most of the shots were left of the target by 2-3 inches.  The rear sight was also set by the factory hard right? It was as much as 1 1/2 of the marks on the rear sight from center. 

Am I correct that turning the rear site to the right (R) on the site will move the bullet to the right?

Title: Re: Brand new CZ 85c and couldn't hit side of barn
Post by: Grendel on November 23, 2008, 05:54:31 PM
You move the rear sight in the direction you want to move the point of impact. So, if you move the sight to the right, the round will move to the right.
Title: Re: Brand new CZ 85c and couldn't hit side of barn
Post by: techguy on November 23, 2008, 06:42:16 PM
Thanks, looks like I need to head back to the range with several different ammo brands in tow, as well as a pistol rest and some patience.

Title: Re: Brand new CZ 85c and couldn't hit side of barn
Post by: Walt Sherrill on November 23, 2008, 09:53:39 PM
What you're describing is not bad accuracy, but bad sight registration.  changing ammo isn't likely to have a great effect on that.   (Different weight bullets can affect whether the bullet hits high or low, and heavier bullets typically hit higher (which seems almost non-intuitive.)

If the gun shoots a small group (with the points of impact together), the gun is accurate, but the sights aren't properly registered. 

An inaccurate brand of ammo (in your gun) will generally mean a larger "group" of shots, rather than a small one (i.e., shots not clustered together.)   Some guns like one brand better than another, but it's not generrally a clear-cut thing.

As suggested, start at a closer distance to get the sights "sort of" right, and then tweak them. 

If the sight is physically centered in the rear dovetail, and you can't adjust it enough using the screws, you may have to physically shift the entire sight a bit to the right.

When you can hit the point of aim at 20 feet, then you start moving out. Then you can use the adjustment screws to fine-tune the points of impact, matching them to the point of aim.  Set the sights for the distance you'll be using for most of your shooting.  Most of mine are zeroed at 30' - 40'; if it's much father than that, in a real-life situation, I'd probably be running and ducking, or looking for a rifle or shotgun. 

Be sure to shoot from a rest (maybe a large plastic bag of rice from the grocery store, if you don't have sandbags) and slowly squeeze off each shot.  You can't sight in a gun properly just shooting offhand, standing, etc.  Doing it with one hand makes it even harder.   Rest your hands, not the gun, on the bag of rice/sand/beans, whatever.
Title: Re: Brand new CZ 85c and couldn't hit side of barn
Post by: techguy on November 23, 2008, 10:58:00 PM
Thanks WALT, I will report back from the range on Wed.

Title: Re: Brand new CZ 85c and couldn't hit side of barn
Post by: Canuck44 on November 23, 2008, 11:13:43 PM
One more thing.  Make sure your trigger finger tip is placed on the trigger with balance of the trigger finger off of the frame of the gun and pull that finger straight back.  You don't want to run the risk of your trigger finger resting on the right side of the frame and pushing the gun to the left as you pull back on the trigger.

Take Care

Bob


Title: Re: Brand new CZ 85c and couldn't hit side of barn
Post by: Walt Sherrill on November 24, 2008, 09:02:54 AM
This might help, too.  It's from the WWW.BULLSEYEPISTOL.COM sight.  If you're right-handed, the chart is right; if left-handed, reverse everything.  (A right hander pushing on the trigger while pulling would give you shots to the left, for example, hence the earlier advice about finger placement.)

This site is a great place to visit and learn:

(http://www.bullseyepistol.com/wheel.gif)
Title: Re: Brand new CZ 85c and couldn't hit side of barn
Post by: blackcampbell on January 20, 2009, 04:26:06 PM
Just took my new CZ-85 Combat out ot the range today and had the exact opposite response.  While the gun was firing consistently to the right and low about a click each, the groups were sub 2" out to 25 yards!  Once I started putting the foreward post over near the left rear sight post, I was bang on, dropping a 16 round mag and a steady, quick pace into the head of the silhouette I was shooting.  It's easily on par with the FN 5.7x28mm for accuracy out to 25 yards.

Funnily enough, doing some quick draw practice, without aiming, I was more accurate than with the sights (same is true when I fire my Tanfoglio .45 and any 1911...)

I hadn't realized that the sights were adjustable night sights; I only knew it was ambi on the controls.  For $600...probably as good a deal as my $400 Witness!  I'm a convert.