do tuners "cheat" barrel harmonics or is there another way to duplicate previous barrel

[fseaman]

1/2 turn out (.021")

That's how it is supposed to work. Glad you got it.

 

[fseaman]

Kieth Glasscock has an interesting video on the subject.

It's all true. That's why he no longer uses it.

For some it works easier than that.

 

[Mikecr]

You can develop for shooting at any fixed distance without a tuner. You might end up with a high SD load though.
Could just be that's your best shooting load.

But if you to work with powder node separate from barrel node, especially at a fixed distance, you have the option for lowest SD and best shooting results -with a barrel tuner. Then apply that with LRH, and at least you have a low SD load with a barrel hitting best at one distance. Typically still good at multiple distances (as needed for hunting). Depends on the barrel & system (like bedding).

So I could powder develop across a chrono for an ES under 10fps.
Choose a distance, like 300 or 600yds, dial the tuner into tight hot bore grouping, and eventually cold bore accuracy.
After that, there is no reason to mess with the tuner, or seating, or anything again for the life of that barrel.
It is either good enough, or it isn't.

For those who think a tuner should be optimized for atmospheric changes, that does not apply to hunting. That's point blank BR only.
After all, as a hunter, what would you fiddle with today -without a tuner? NOTHING
And from those in the statistic cult, who can NEVER be satisfied, simply ignore them.

 

[ntsqd]

I suspect that the barrel mass to tuner's moveable mass ratio is very important. Put a 2 oz. tuner on the 1.25" cylinder barrel and I too would doubt that it's going to have much effect. Put a 4 oz. tuner on a pencil barrel and now it should have some effect.

 

[Beluebow]

Tuners absolutely work....how many shots does it take to prove it?

 

[Frank in the Laurels]

..contrary to an above statement, THEY NOT ONLY WORK, THERE MIRACLE WORKERS....Shooting under benchrest rules and conditions out to a 1000 we've found they preform miracle compared to nontuners, will never be without them on any of our comp rifles...

 

[Alex Wheeler]

You can develop for shooting at any fixed distance without a tuner. You might end up with a high SD load though.
Could just be that's your best shooting load.

But if you to work with powder node separate from barrel node, especially at a fixed distance, you have the option for lowest SD and best shooting results -with a barrel tuner. Then apply that with LRH, and at least you have a low SD load with a barrel hitting best at one distance. Typically still good at multiple distances (as needed for hunting). Depends on the barrel & system (like bedding).

So I could powder develop across a chrono for an ES under 10fps.
Choose a distance, like 300 or 600yds, dial the tuner into tight hot bore grouping, and eventually cold bore accuracy.
After that, there is no reason to mess with the tuner, or seating, or anything again for the life of that barrel.
It is either good enough, or it isn't.

For those who think a tuner should be optimized for atmospheric changes, that does not apply to hunting. That's point blank BR only.
After all, as a hunter, what would you fiddle with today -without a tuner? NOTHING
And from those in the statistic cult, who can NEVER be satisfied, simply ignore them.

I have been hearing that for close to 20 years. But no one does it because it just doesnt work. Its a nice theory. But you cant tuner tune a barrel. It will fall apart.

 

[Alex Wheeler]

..contrary to an above statement, THEY NOT ONLY WORK, THERE MIRACLE WORKERS....Shooting under benchrest rules and conditions out to a 1000 we've found they preform miracle compared to nontuners, will never be without them on any of our comp rifles...
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I have not had that experiance. I can only go by my experiance and results. 40+ records and zero with a tuner. Thats not me trying to be cocky at all. Its just a fact I cant deny. And I have put on a lot of tuners. I have had more guys improve by getting them off tuners by getting them on. A lot of thats user error but thats a real problem thats hard to fix.

 

[Mikecr]

no one does it because it just doesnt work.

If you can make a non-tuner barrel shoot, you can make a tuner barrel shoot.
Same with a muzzle break.
Why make anything difficult about it?