bruno copy

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jbunny

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i was at the range today and a friend had a check made
bruno copy. it shoots nice tight groups EXCEPT the first
shot is allways off by at least an inch. you let the gun sit for an hr and the same thing again. WHY???????
the only thing that i can come up with is internal stress
in the steel and the vibs from the first shot releive it????
any ideas as to why????
TIA
Louis
 
Donny Fenn1 said:
that spelling (check...)? all BRNOs were made in
Czechoslovakia.....
of course now they are called CZs after the iron curtain rusted away...
Click to expand...
you must be a school teacher. yes this is a GENUINE
CZ. can this first wild flyer problem be fixed?????
Louis
 
no but you said it was a copy and maybe the incorrect spelling would indicate it as such
i have had numerous BRNO and now CZ rimfires and never noticed the flyer problem you mention
did you try different types of ammo?
 
That's strange. I'm wondering if it is the rifle, or the way the magazine is being loaded. Perhaps, since the last cartridge in the magazine, is the first to be fired is the culprit. Maybe the excitment of squeezing off that first shot might have somthing to do with it. Or even if trying to jam the mag in place might be missing, and damaging the bullet?
 
I'm not familure with the CZ, but on my Mossburg, the 7th round in the mag was just too tight on the spring, so it would go into the chamber at too steep an angle and would bind on the chamber going in, scraping the lead so it wouldn't fly strait. I solved this two ways:
1: I moded the clip with a pliers to feed straiter
2: I now always put the mag in with the bolt closed as this forces the rounds to lay down in the mag and friction holds them long enough to get that first round chambered.

Hope this helps in some way

edit: (7th round in being the first one fired)
 
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I haven't heard of this before if we're talking about a real Brno. Mine certainly doesn't do this. Has the action been taken out of the stock and if so was it properly re-torqued when it was put back? Pics or a more complete description of the rifle would help - Model #, style of stock, barrel contour.
 
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If the first shot is off by an inch but the rest are fine and then the problem happens again after the gun has sat idle for a bit my only conclusion is that heat cycling has a part to play in this.

Have you ever thought that a cold barrel could be the culprit? I'm a car guy through and through and am kinda new to this gun stuff but I can tell you now that heat cycling plays a major role in the operation of any mechanical part.
 
Can't imagine that heat would have anything to do with a difference between shots one and two. I'd make sure the action is sitting properly in the stock, with screws carefully tightened. Try loading all rounds single shot, for uniformity.
 
tiriaq said:
Can't imagine that heat would have anything to do with a difference between shots one and two. I'd make sure the action is sitting properly in the stock, with screws carefully tightened. Try loading all rounds single shot, for uniformity.
Click to expand...
my bud ric and i had the range to ourselfs this afternoon.
my model 52 winchester heavy barrel and my 2 cil-anshutz 180 22 LR target rifles all would shoot the first shot a flyer and the next 10 shots would be dime size groups. we let them sit for an hour while we shot other guns and back to the 22's and the same thing again.first shot a flyer. i've had this model 52 win for 35 years or so
and i can't recall it ever doing that. i guessing that
there is a chemical reaction between the lube and powder
residueafter it sits idle a while. i have e-mailed CCI and
Federal and will wait and see what they have to say.
 
First shot wild? Fix this problem forever, shoot the first one into the next guys target, then proceed. I have had about 30 CZ-Brno's over the years and the only common problem among them was that I no longer have a lot of them. They all shot, and I should have hung onto almost all of them. Especially that one with the tiger stripe maple stock.......ahhhhhhh.
 
jbunny said:
my bud ric and i had the range to ourselfs this afternoon.
my model 52 winchester heavy barrel and my 2 cil-anshutz 180 22 LR target rifles all would shoot the first shot a flyer and the next 10 shots would be dime size groups. we let them sit for an hour while we shot other guns and back to the 22's and the same thing again.first shot a flyer. i've had this model 52 win for 35 years or so
and i can't recall it ever doing that. i guessing that
there is a chemical reaction between the lube and powder
residueafter it sits idle a while. i have e-mailed CCI and
Federal and will wait and see what they have to say.
Click to expand...

Hmm. It seems very strange that four different rifles all have the exact same problem. To me this means the rifle isn't a contributing factor. The problem is with either the ammo or the shooter. I suppose it is possible that there is some crazy reaction from the ammo, but that would be pretty odd. The simple way to test that would be to try different ammo; preferably a brand that you know shot consistently in the past.
My suspicion though is that there is some repetative aspect of your shooting that is causing this. Perhaps your shooting posture, cheek weld, line of sight, grip, or some other factor changes after the first shot. Analyze your shooting and see if anything changes after the first shot. good luck,
dh
 
My first guess would be to try a different shooter... Otherwise, try a different magazine.

I've had a similar problem with a rifle were the last shot would always goes off to one side. Turns out the last round didn't feed as smoothly as the first four and the bullet would scrap on the top of the chamber on its way it. A different magazine fixed the problem.
 
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