Umarex Notos first shot is off

[Star7]

In my recollection, whenever I had a random massive deflection like this it was a slightly loose barrel or moderator. A couple of shots shifted things to a happy place but when the gun was transported, it got out of whack.

sorry, that's all I got, best of luck!

 

[The BB Bandito]

In my recollection, whenever I had a random massive deflection like this it was a slightly loose barrel or moderator. A couple of shots shifted things to a happy place but when the gun was transported, it got out of whack.

sorry, that's all I got, best of luck!

Thanks, the chrono should be here tomorrow so I can get a little data then. Hoping to get it figured out

 

[bubbahotep]

My Notos does this during shooting sessions when I switch to something else for a bit. I'd say it's a leak but it holds pressure without dropping for weeks.

 

[The BB Bandito]

@nervoustrig @Vetmx yesterday the problem stopped? Not sure what happened? I haven’t changed anything or tightened anything. The first shot is now back on target. This is so odd and really bugging me on why it happened… I’m definitely not mad it corrected itself.

I finally got the chrono in today and told yall I would run the numbers. The shot FPS with H&N Barracuda extremes 18.52 grain are as follows:

669.8
674.4
677.6
672.5
670.6
665.8
662.9
669.1
668.2
662.1
665.3
667.5
665.3

 

[Star7]

I have not experienced large lateral shifts due to velocity variations. If this returns, you might try removing the two pins on the moderator and checking to see if the insert is loose or has debris that might on occasion hang into the shot path. A blast of air or two might shift it and that induces the variable response. Or, you may have just shot a piece of debris clear of your pellets passage and life will be good for here on. hope so.

 

[The BB Bandito]

I have not experienced large lateral shifts due to velocity variations. If this returns, you might try removing the two pins on the moderator and checking to see if the insert is loose or has debris that might on occasion hang into the shot path. A blast of air or two might shift it and that induces the variable response. Or, you may have just shot a piece of debris clear of your pellets passage and life will be good for here on. hope so.

Let’s hope the later is the case

 

[Vetmx]

I know what fixed it. The same thing that fixed your illness when you were a kid and your mom said I’m taking you to the doctor. Your gun got scared when it saw the chronograph. No more being lazy, playing games or messing around. Now it can’t get away with it.

 

[The BB Bandito]

I know what fixed it. The same thing that fixed your illness when you were a kid and your mom said I’m taking you to the doctor. Your gun got scared when it saw the chronograph. No more being lazy, playing games or messing around. Now it can’t get away with it.

Hahahahaha now that’s funny! I’m gonna have to keep the chrono in the same room with gun so it doesn’t start slipping again.

 

[Star7]

Many years ago, my powder burners were just fine and then, I got a chronograph.

The powder burners suddenly became very ill. Not a one gave velocities anywhere close to published numbers.....beware the chrono

 

[vtl]

My first Notos had barrel wiggling +- 5 degrees or more. Took the barrel off, it looked like the cone-shaped hole was drilled with offset from where it was supposed to be. Had to exchange the gun. I won't be surprised if my defective gun was not the only one.