Tuner pictures

[Link]

We have all seen pictures of ladder tests that I find informative.
Can someone post pictures of tuner testing and explain what is happening?
Or maybe there is something?
thanks

 

[Texas10]

I have targets I can photograph, but they don't really tell the tale. Typically you see groups string vertically, then horizontally, then come together. In my case I had a bullet the new barrel just didn't like, so I was getting mixed results at 100 yds. Several shots into one hole followed with a flier or two.

Second attempt I used a standard load (for 6mmbr) of 30.0 gr Varget and 107 SMK seated .020 off, and still got mixed results. I removed the tuner and worked the load up normally and it turned out that it liked 29 gr Varget and .015 off. Then came the tuner, a Harrells tuner & brake.

Put it on and adjusted it to the bottom (most inward position) to start. The POI was very different than without it, but the groups were about 1 1/2 moa. I turned it just two clicks and BAM! down to half minute. Small 1/16 click adjustments and now it was below 1/4 moa and I was shooting at 2 and 3 hundred yards to fine tune.

That's when wind reading became the major component in shooting smaller groups, and shot several two shot groups in the zeros moa while fine tuning at 210 yds by waiting for the wind to calm.

Next range session I'll have wind flags and a better rest setup.

 

[gunsandgunsmithing]

I have targets I can photograph, but they don't really tell the tale. Typically you see groups string vertically, then horizontally, then come together. In my case I had a bullet the new barrel just didn't like, so I was getting mixed results at 100 yds. Several shots into one hole followed with a flier or two.

Second attempt I used a standard load (for 6mmbr) of 30.0 gr Varget and 107 SMK seated .020 off, and still got mixed results. I removed the tuner and worked the load up normally and it turned out that it liked 29 gr Varget and .015 off. Then came the tuner, a Harrells tuner & brake.

Put it on and adjusted it to the bottom (most inward position) to start. The POI was very different than without it, but the groups were about 1 1/2 moa. I turned it just two clicks and BAM! down to half minute. Small 1/16 click adjustments and now it was below 1/4 moa and I was shooting at 2 and 3 hundred yards to fine tune.

That's when wind reading became the major component in shooting smaller groups, and shot several two shot groups in the zeros moa while fine tuning at 210 yds by waiting for the wind to calm.

Next range session I'll have wind flags and a better rest setup.

That's a very good explanation and example of what to expect. The key is moving in tiny increments or you skip the sweet spot and wind up chasing your tail. With my tuners I recommend 1 mark at a time between groups. That's equivalent to
.001" of tuner travel per mark!

Something of note that is important to remember this time of year....if your load gets too hot a tuner won't fix it and you'll likely get less than predictable results from tuner adjustment. No different than groups blowing up tuning with powder charge. You just can't tune it out with the tuner. I back my load down a bit this time of year or, just stay with the summertime load, year round.

 

[Ccrider]

Here is a post with pictures of my first tuner testing. I tuned the load first and then started adjusting with the tuner. The results were obvious and seemed to be cyclical.

http://forum.accurateshooter.com/threads/my-first-tuner-test.3980240/

 

[gunsandgunsmithing]

Here is a post with pictures of my first tuner testing. I tuned the load first and then started adjusting with the tuner. The results were obvious and seemed to be cyclical.

http://forum.accurateshooter.com/threads/my-first-tuner-test.3980240/

Nice! Another very good example. I've thrown away about a gazzillion such targets after realizing how simple and evident it is to see on target. That's the thing...You can't "not see" what the tuner is doing on a gun that shoots competitively. A poor bedding job will give ya fits as will a load that is just too hot. Otherwise, it's very clear. Just be very methodical, minimize all the variables such as wind and distance, and resist the temptation to start randomly twisting on it. Being methodical is what got us where we are with tuners. They've always worked but have not always been used to their potential...as most people were simply moving them too far and/or too often. It still amazes me how so little tuner travel can make so much difference. With a good gun and conditions, even a half thou of tuner travel shows up on the target, clearly. Pretty awesome, if you ask me!

 

[Ccrider]

With this being my first outing with a tuner, I went in not expecting much but was greatly surprised.

 

[gunsandgunsmithing]

With this being my first outing with a tuner, I went in not expecting much but was greatly surprised.

I'm guessing you're expectations just got higher, though. Lol! Tuners are great things!

 

[Mulligan]

I'm guessing you're expectations just got higher, though. Lol! Tuners are great things!

Do you have pictures or drawings that depict a typical series groups fired at different tuner settings that you are willing to share?

CW