Tuner rules

[1shot]

After reading all of the posts within this thread, I still have an unanswered question.
It has been referenced by several shooters that they adjust their tuner throughout the day, but never elaborated as to which way and for what reason. Is there an assigned rule that is generally followed?
i.e. "sun up, sights up"?
Thanks for the help,

Lloyd

 

[R.Morehouse]

I keep a simple saying that works for me " Down And Out ". When the temp. goes down I find it works best for me to turn the tuner out......In VERY small adjustments.......Hope this helped

Regards
Rick

 

[Titan]

Does anyone track and adjust based on density altitude when using a tuner to achieve positive compensation at 1000 yards? Can a tuner achieve positive compensation with a 1.25 inch straight barrel? Has anyone demonstrated this?

 

[333smitty]

For those competing in VFS matches adjusting your tuner during a match will move your bullet impact and throw your aim off a bit. You should always go to the sighter and make necessary adjustments before you go to the record target after a tuner adjustment...

 

[1shot]

This must be something that requires the secret handshake.
For the sake of clarity, lets assume that the tuner is positioned at it's mid point. As you are shooting along, you start to get vertical. Which way do you move the tuner to get back into tune? Any help is appreciated.
Thanks,

Lloyd

 

[R.Morehouse]

I keep a simple saying that works for me " Down And Out ". When the temp. goes down I find it works best for me to turn the tuner out......In VERY small adjustments.......Hope this helped

Regards
Rick

Verify your adjustments on the sighter before going to record....

 

[big5ifty]

As you are shooting along, you start to get vertical. Which way do you move the tuner to get back into tune?

Have you tested the group dispersion and offset for every click or mark of your tuner through it's entire range of movement ?

If not, nobody can answer that question for you.

 

[JSH]

After reading all of the posts within this thread, I still have an unanswered question.
It has been referenced by several shooters that they adjust their tuner throughout the day, but never elaborated as to which way and for what reason. Is there an assigned rule that is generally followed?
i.e. "sun up, sights up"?
Thanks for the help,

Lloyd

I would think that would vary a fair bit from rig to rig and setup to setup and tuner to tuner, just as ammo bullet and load data does.

 

[Mulligan]

This must be something that requires the secret handshake.
For the sake of clarity, lets assume that the tuner is positioned at it's mid point. As you are shooting along, you start to get vertical. Which way do you move the tuner to get back into tune? Any help is appreciated.
Thanks,

Lloyd

Shout out to Mike Ezell

how did you pattern tuner while it was in tune? I'm confused by your question. I'm happy to try and help but we've got to be on the same page in terms of what tuners do. I must be misunderstanding your post because reading group size and shape is 99% of using a tuner...and yes, you have to know...

forum.accurateshooter.com

Check out this thread
This stuff is actually pretty darn simple, once you get your head wrapped around it.
CW

 

[Mulligan]

tuner alter your barrel ?

When you screw a tuner or brake on the end of a HV barrel does it change the barrel in a bad way? Not talking about how a tuner or break works but the ''shape'' of the barrel. How important is it to torque them on the same every time? I hope I explained what I'm asking? lol TY Don

forum.accurateshooter.com

OP
Check out post #15 on the thread above.
It has pictures of my targets and notes

The best investment I made to understanding what a tuner can do for you is loading up a bunch of BR match quality ammo and shooting it at both 100 and 600 yards on the same day. Moving the tuner 1 mark at a time and watching the point of impact and group shape/size change is of real value.

After getting what I felt was the best load (loading at the range)(600 yards) I started adjusting the tuner……when I felt I had it dead nuts and knew what out of tune looked like (likely as valuable as knowing what in tune looks like), I packed up all my gear and headed to our 100/200 yard range down the road 1/4 mile.

Once there, I set up all my equipment and started to do load development at 100.
Guess what, it wasn’t the same. I cannot explain it. Don’t get me wrong, It tuned up just fine, just not the same powder charge.

After it was tuned and I had completed my tuner test, I shot some of my 600 yard loads at 100 and completed a tuner test with that. Man, the 600 yard load shot really small with a small tuner adjustment!

I then packed up all my gear and headed back to the long range facility.
I set everything up and tested my 100 yards load and tuner setting at 600, not great results?? Next I tested my 600 yard load with the best 100 yard tuner setting, not great. Tested my best 600 yard load with best 600 yard tuner setting, fabulous groups!

A while later (likely several months) I was shooting a 100/200 yard unregistered short range match (this was during covid ) and my PPC and I were stinking the place up. I asked the match director if I could shoot my dasher (the one I did the extension tuner testing with) in the HV match the following day. He agreed being it was not a registered match (this rifle didn’t have the “correct” geometry to satisfy the NBRSA rules), I set that rifle up in my rest and adjusted the tuner as per my notes and finished first in a field of ppc’s. Remember this rifle was completely out of class in stock dimensions so it wasn’t really a fair fight, but that tuner setting adjusted for temp was spot on!

Hope this helps
CW

 

[big5ifty]

@Mulligan - how many rounds did you use to get to the point where you knew exactly what the tuner was doing for the load at 100 and 600 yards ?

 

[Mulligan]

@Mulligan - how many rounds did you use to get to the point where you knew exactly what the tuner was doing for the load at 100 and 600 yards ?

Darn good question!

At 600, I shot groups either 4 or 5 marks each side of tune. Then at 100, I did the same thing but, I then decided to “play a bit”

I shot a group at 1 full revaluation (32marks) out from tune just to see what I could see. This particular dasher looked to “repeat” every 8 marks so naturally I had to see what was over the next hill. So, I took it out 2 full revaluations from tune and it shot well. That really did solidify for me, that I only need to consider the 4 or 5 marks either side of tune and that means I could never be more than 4 marks out of tune with this rifle.

I took it back to 600 and played more with moving the tuner randomly to see if I recognized the pattern and could just make one move to bring it back in to tune. I discovered I could if I was within 2 marks, beyond that, i would have to depend on trial & error because of the influence of conditions at 600.

I shot a LOT that day, it was a good education, fun, and for me, well worth this effort. In addition to the efforts above, I would guess I called or texted Mike Ezell with questions or pictures a “few” times throughout the day for advice.

I hope this helps
Questions holler
CW

Edit
These were mostly 3 shot groups with a few 5 shot groups to prove the setting.

 

[1shot]

Have you tested the group dispersion and offset for every click or mark of your tuner through it's entire range of movement ?

If not, nobody can answer that question for you.

After reading the latest posts, it seems that there are no hard and fast rules that apply. I'm brand new to f-open shooting, as well as never used a tuner before. Given the frigid weather conditions, I was trying to get some advice to try when the weather warms up to some sane temps.
Thanks for all of your responses,

Lloyd

 

[big5ifty]

After reading the latest posts, it seems that there are no hard and fast rules that apply. I'm brand new to f-open shooting, as well as never used a tuner before.

Tighten the tuner in as far as it can go, and leave it there as a start.

Concentrate on optimising shot dispersion on the target at the match distance.

Once you, the platform and the load are performing optimally, introduce the tuner variable.