Tuner Test - results confusing

[Cfshooter]

Here is what 5 shot at 100 prior gave me in load testing a couple weeks prior. No tuner.

Why even screw the tuner on after those results? Sell it!

 

[gunsandgunsmithing]

Here is what 5 shot at 100 prior gave me in load testing a couple weeks prior. No tuner.

Again, not relative to tuners but Id go to 55.1 and adjust seating depth .002 at a time. Then do a tuner test, moving the tuner .001 at a time.

 

[SG4247]

Okay thanks, I appreciate all the replies. Doing a lot at once with the rifle, and the tuner is a totally new dimension for me.

 

[BoydAllen]

When you guys test over flags, are you making wind corrections prior to each shot ? If so~why ?

I can only speak for myself, but when I am testing I use the flags to tell me when to shoot, and when not to. I do not hold off. We are trying to reduce the number and effect of variables, not introduce another one.

 

[JFrank]

This one ain’t too shabby either

 

[gunsandgunsmithing]

This one ain’t too shabby either

Smh....not in tune, unless that's all it has....and I doubt it. #40 above implies it can do better.

 

[JFrank]

I can only speak for myself, but when I am testing I use the flags to tell me when to shoot, and when not to. I do not hold off. We are trying to reduce the number and effect of variables, not introduce another one.

Good advice as always

Smh....not in tune, unless that's all it has....and I doubt it.

The load appears stable right there.

The op chose a different charge entirely at 55.3

 

[jackieschmidt]

When you guys test over flags, are you making wind corrections prior to each shot ? If so~why ?

No. I take my time and catch the condition exactly the same as close as possible. If it takes 15 minutes to shoot a five shot group, so be it.
You HAVE to have a reasonable idea how the conditions affect the bullets path.

Remember, when tuning the rifle, you are ascertaining the rifles capability, not yours. That is why it is so important when testing extreme accuracy equipment to acquire a set of flags and learn what they are telling you.

Here is a picture of my flag setup at 100 yards. Any time I am shooting one of my Competition Rifles, I set my flags exactly the same way as I do in a Match.

 

[Rset]

Even more satisfied after reading these posts that I don't find the need to use a tuner.

 

[SG4247]

Good advice as always

The load appears stable right there.

The op chose a different charge entirely at 55.3

Yea looking back, not not sure exactly why I chose 55.3 gr! Maybe due to temp. We shoot in 70-100 temps normally. It’s going to pick up 40 fps this summer so maybe 55.1 gr and redo the tuner test is in order.

 

[JFrank]

I don’t know either’ perhaps the small group weighted your decision. Nevertheless the tuner didn’t fix it , if 55.1 turns out to be a repeatable tune the window may be very small and considering the fps increase that you mentioned could be a problem again.
Do you intend to shoot mid to long range of point blank ?
Interesting how guys view things differently…

 

[Bronsin]

Okay, if one revolution of the tuner moves it .050” and there are 10 divisions per revolution each division is .005” correct?

So, traversing the tuner 001” is a very small amount, even with a depth mic - which I do have.

Start where? At setting 15,20,25?

One revolution is .050 and there are 50 graduations. Each one moves it .001. He says to move it 5 graduations per group.

 

[SG4247]

This rifle is for mid and long range f-class.

Tough to do load work ups in the middle of winter and then go compete in the summer heat, with what was learned previously.

We load in advance, and I often find my groups fall apart when the last relay is shot, in the hottest part of the day. So, looking to improve my score consistency, and thought the tuner might help that.

 

[Dusty Stevens]

This rifle is for mid and long range f-class.

Tough to do load work ups in the middle of winter and then go compete in the summer heat, with what was learned previously.

We load in advance, and I often find my groups fall apart when the last relay is shot, in the hottest part of the day. So, looking to improve my score consistency, and thought the tuner might help that.

Its hard to verify your tuner movement with no flags and no sighter shots in an f-class match so you gotta split the middle for your loads and hope they dont blow up in the afternoon

 

[memilanuk]

I often find my groups fall apart when the last relay is shot, in the hottest part of the day. So, looking to improve my score consistency, and thought the tuner might help that.

You, and about everyone else. Last relay of the day, hottest part of the day, usually has the most mirage and the most wind. Add in mental fatigue, physical fatigue - lugging gear on and off the line, pulling targets all day, etc. etc. Not exactly back breaking labor, but it adds up and no one is as fresh by the end of the day as they were at the start. Yeah, having a tuner to help with deal with some of the changes from cold to hot as the day progresses may help... but there are bigger factors going on that no tuner on the market is going to fix.

 

[Warren Dean]

You, and about everyone else. Last relay of the day, hottest part of the day, usually has the most mirage and the most wind. Add in mental fatigue, physical fatigue - lugging gear on and off the line, pulling targets all day, etc. etc. Not exactly back breaking labor, but it adds up and no one is as fresh by the end of the day as they were at the start. Yeah, having a tuner to help with deal with some of the changes from cold to hot as the day progresses may help... but there are bigger factors going on that no tuner on the market is going to fix.

^^^^^^^^

This

 

[gunsandgunsmithing]

You, and about everyone else. Last relay of the day, hottest part of the day, usually has the most mirage and the most wind. Add in mental fatigue, physical fatigue - lugging gear on and off the line, pulling targets all day, etc. etc. Not exactly back breaking labor, but it adds up and no one is as fresh by the end of the day as they were at the start. Yeah, having a tuner to help with deal with some of the changes from cold to hot as the day progresses may help... but there are bigger factors going on that no tuner on the market is going to fix.

True, but I'd rather deal with those things with a well tuned rifle.

 

[memilanuk]

True, but I'd rather deal with those things with a well tuned rifle.

Not doubt. Just pointing out that a tuner wasn't going to 'fix' that particular situation. It might help... or it might get lost in the noise.

 

[Mulligan]

Not long ago, I was doing a pretty good job of “following “ the top shooters in F-Open. If I recall correctly, there was a fella who won the 600 yard Nats a few years in a row applying the use of a tuner. I remember asking one of our local guys about the shooter and his tuner, his reply was, the shooter has volumes of notes regarding tuner use and he goes to great lengths to protect that hard earned knowledge.
I see tuners showing up on the firing line more frequently in both F-class and long range BR.
I run tuners on all my rifles including my rail. I have too many “saves” in the books to even question their value. However, if you’re worried about burning up a barrel while learning to use a tuner, maybe they are not for you?

One more addition to the conversation- some folks use (move during a match) a tuner to help keep them the rifle in tune. Others use a tuner to “widen the node”, basically using a tuner as a weight on the barrel to give you a little more room to work with when the weather conditions change. One very successful shooter that I know, employs both strategies, one in LR the other in SR.

CW

 

[gunsandgunsmithing]

Not doubt. Just pointing out that a tuner wasn't going to 'fix' that particular situation. It might help... or it might get lost in the noise.

I understand and I agree. Wind is the single most important factor, especially when blowing hard. So yes, pull the trigger in a hard switch and a tuner won't help at all with that. That said, tuners give me predictable group shapes for at least a couple of marks from dead nutz in tune, and I use these shapes with a purpose. It's very common(with my tuner) for 1 mark away to be straight vertical and 2 marks away is diagonal up and to the right. Two marks is as far as I can remember ever being out of tune due to condition changes. So, knowing that and that the up and right stairstep group shape can't be wind from a rh twist bbl, it makes it much easier to tune in the wind. When doing my initial tuner test, I look specifically for those group shapes. That's why I do.