Barrel Tuners

[Eric Leonard]

So when my vertical started climbing today at 50* I should have moved it out? TY Don

they say up and in down and out ,,I havent proven that to myself but thats what I have read,,by that you got it backwards,,but I may be wrong

 

[Terry]

This may be a stupid question, but when adjustment is necessary, how do you know which direction to turn the tuner, and how much? Or is it just trial and error?

By testing, and marking the tuner. at zero i get "o", two clicks one way "oo", two clicks the other way "8"

zero = one hole, 2 clicks then two holes right to left, two clicks the other way two holes vertical.

I forget which way does what, so i draw it on the tuner with a sharpe.

 

[bowfisher]

I will read the links provided, I'm in the process of getting my 17HMR threaded for my suppressor, for varmint control around the farm. I'm hoping it shoots as well as it did previously....I was wondering just the other day about putting a tuner on it somehow, to see if I can tune groups with the can on if needed...I will see what I can find out. Neat discussion.

 

[JimPag]

Well at one time I was taught that as the day heats up you should turn the tuner in but I'm learning that's not the best way to keep the gun barrel in tune. It's true when it heats up during the day to compensate for powder heating up making it more explosive you have to turn the tuner in, but to keep the gun barrel in tune the density actually moves more than the increase in temp which in turn once calculated causes a tuner out movement.

 

[txdan]

http://forum.accurateshooter.com/threads/shout-out-to-mike-ezell.3996344/
this thread has some good info that you may or may not find helpful.
I recently traveled down the tuner road........ I now own three and Dan Dowling now stocks the Ezell tuner as a result.
CW[/

Well at one time I was taught that as the day heats up you should turn the tuner in but I'm learning that's not the best way to keep the gun barrel in tune. It's true when it heats up during the day to compensate for powder heating up making it more explosive you have to turn the tuner in, but to keep the gun barrel in tune the density actually moves more than the increase in temp which in turn once calculated causes a tuner out movement.

My experience also.
Just don’t move a lot at one time.
Went from Gulf coast to Co. and only moved 1 mark on the tuner.
That took the vertical down to “good “

 

[Ccrider]

So when my vertical started climbing today at 50* I should have moved it out? TY Don

Move it out and if that does not work, move it in. You should find the sweet spot. Just don’t move it a lots either way. I go one mark at a time. Usually one is enough. If two does not make it better I try the other direction.
Sometimes I will tweak my load a little still. May be easier to move the tuner, but but when I know a slight increase or decrease in the charge will tighten the group up, I will do that rather than move the tuner.

 

[Rockchuck]

Just getting ready too start useing a ezell tuner. I just built a 30br waiting for the stock to cure. Where do i start? Do i need to find a load without the tuner on the gun? When i do then install tuner???

 

[JMayo]

I was told start out to zero then one full revolution.
While FFing I played with turning it out a mark at a time watching the poi change.
I fought it hard, found nothing good.
I got angry and decided to turn it all the way in and start there. I found upward node, one hole groups at 4.75 from all the way in.
I'm wowed at the accuracy at one and two hundred.
IF I CAN GET MY CHIT TOGETHER behind the gun. Right now I'm nursing a hurt shoulder from shooting it like a 6mm. Like getting hit with a Damn sledgehammer :/
gonna firm up my hold and ride the rocket ! LMAO

 

[rardoin]

I screw mine in until it bottoms on the shoulder and see where the '0' mark is relative to a mark I make on my barrel at the 12:00 position on the shoulder (I use a spring loaded prick punch). If the '0' mark is FURTHER than 6 increment marks away from the reference mark on the barrel I turn the tuner to line up the '0' mark and start load development, with the tuner on, and LEAVE THE TUNER ALONE until a proper load is decided upon. I only then adjust the tuner while testing its influence in different conditions or in a match when I see the vertical dispersion more than I expect and conditions should not be responsible for. The rationale for starting position for my tuners is I want to have at least 5 increments in either direction to adjust the tuner from a near fully bottomed out position. During testing, when using this method, I have not seen any advantage to testing over 2-3 increments in or out from that zero point because the group patterns repeat themselves over a 5-6 increment spread. Hope this makes sense.

Edit- I forgot to mention....if the tuner, when bottomed out, is closer than 6 increments to the 12:00 reference mark I then screw the tuner out another revolution to get the next '0' to align at 12:00. I just want to make sure I have enough adjustment either side of '0' to sweep through the full effects of the tuner.

nutha' edit- I initially wrote "If the '0' mark is closer than 6 increments, I line up the tuner to '0'. I corrected the closer to further.

 

[Nature Boy]

I’m using one of Mike’s tuners on my 6BRA in F Class. My setting tested out to be at the #2 increment on the tuner.

A couple of weeks ago I shot some 5 shot groups at 600 to verify everything was still good. I shot the target on the left with it out of tune 1 increment, put it back to the #2 position and shot the center and right targets. Here’s what it did (12” shoot-n-c targets)

 

[Dusty Stevens]

I’m using one of Mike’s tuners on my 6BRA in F Class. My setting tested out to be at the #2 increment on the tuner.

A couple of weeks ago I shot some 5 shot groups at 600 to verify everything was still good. I shot the target on the left with it out of tune 1 increment, put it back to the #2 position and shot the center and right targets. Here’s what it did (12” shoot-n-c targets)

When you actually look at the measurements on those targets theyre not that much different. The wind was not on your side though on em so the second 2 would have been at least not much vertical

 

[Nature Boy]

When you actually look at the measurements on those targets theyre not that much different. The wind was not on your side though on em so the second 2 would have been at least not much vertical

Yeah, always hard to factor the wind (especially for me). I was going off the mirage to try and pick my shots when conditions were favorable. Taking everything into account, I'd say the increase in vertical was due to taking the tuner out of tune. Not a large sample size though. Take it for what it's worth

 

[Dusty Stevens]

Yeah, always hard to factor the wind (especially for me). I was going off the mirage to try and pick my shots when conditions were favorable. Taking everything into account, I'd say the increase in vertical was due to taking the tuner out of tune. Not a large sample size though. Take it for what it's worth

Its actually a good example of how you can tune the dreaded vertical out real easy- shot in the same conditions and did what it was supposed to do. Thanks for posting those

 

[Nature Boy]

I started using the tuner last year so I’m still learning.

One of the first matches I shot with it I had the opportunity to make an adjustment mid way through the match. Here’s the scorecard:

The two 9’s in the first match was me missing a wind switch.

By the second match the air temp had in increased around 20 deg and I dropped 3 shots, high and low. I decided to move the tuner 1/2 an increment in.

I then shot the remaining 30 shots, all 10s and Xs.

Was it me settling in and shooting better or was it the tuner? Hard to isolate all the variables and know for sure