Barrel Tuner vs Dapeners vs Load Development

[Comrade Terry]

Terry, a barrel opens up slightly when machining the muzzle that much. Not good for accuracy.

Well, that begs the question, "Why would they make it like that if the barrel would open up slightly?"

 

[JRS]

Well, that begs the question, "Why would they make it like that if the barrel would open up slightly?"

Production made, rather than custom made to fit your barrel.

 

[LHSmith]

Well, that begs the question, "Why would they make it like that if the barrel would open up slightly?"

Same reason someone designed the Yugo......they haven't got a clue.

 

[savagedasher]

It seems to me when the threads at tight .
The diameters of the barrel would be the size of the of what ever is screwed on it .
If it didn't work that way why would you sleeve a action? Larry

 

[Eddie Harren]

It seems to me when the threads at tight .
The diameters of the barrel would be the size of the of what ever is screwed on it .
If it didn't work that way why would you sleeve a action? Larry

This was once known as "Pretzel Logic".

 

[JRS]

It seems to me when the threads at tight .
The diameters of the barrel would be the size of the of what ever is screwed on it .
If it didn't work that way why would you sleeve a action? Larry

Would you turn down a 1.25" barrel to accommodate a 5/8-28 item?

 

[savagedasher]

Would you turn down a 1.25" barrel to accommodate a 1/2-28 item?

Would you turn down a 1.25" barrel to accommodate a 1/2-28 item?

No reason to I don't think 1/2 '' is enough bigger then the bore but many of the cans are made that way and never seen one break off.
Some of them weigh 20 oz or more . Larry

 

[BenPerfected]

Would you turn down a 1.25" barrel to accommodate a 5/8-28 item?

Some tuners are available threaded for .750 or .900

 

[JRS]

No reason to I don't think 1/2 '' is enough bigger then the bore but many of the cans are made that way and never seen one break off.
Some of them weigh 20 oz or more . Larry

Breaking off isn't the problem.

 

[savagedasher]

Some tuners are available threaded for .750 or .900

RAS makes a 7/8 32 . Along with smaller
I don't understand the worry many of barrels 1 1/4 and larger are on a 1" tennon action And chambered for a mag case .
Larry

 

[LHSmith]

Think about the reason a good barrel maker laps AFTER final contouring.

 

[savagedasher]

Breaking off isn't the problem.

What is the problem then. As soon as it it tightened the diameter would be as large as what your install is . Larry

 

[gunsandgunsmithing]

It's 1.25 and matches the barrel. Just have to machine the barrel down to dimensions for the tuner but after its installed, its the same profile.

I'll let you other guys hash out the bore growth subject with savagedasher.

I will address something though...that being how a tuner adds to the tuning node width, which as mentioned in an earlier post or so, is how and why some people use tuners at all.

When you add mass at the end of the muzzle, you lower the frequency that it vibrates at, hence slowing everything down. This is how node width is increased by tuners.

I'm not bashing on any tuner design and won't...they all work on the same principle. A tuner that is the same material, size and weight as the barrel, without extending a good distance beyond the muzzle, will still be adjustable for tune but will not lower the frequency substantially, therefore, will not increase tuning node width. In fact, you remove weight from the muzzle by turning down and threading for the tuner...only a small amount, as you replace most of the weight when you screw the tuner on. Now, if it's considerably longer than the threaded portion, it'll add some amount of weight. Adjusting it out beyond the muzzle will give it leverage and increase the "work" that it can do, but this is small and relative, because other tuners can weigh more, be made to extend beyond the muzzle, too..as well as also being able to be adjusted beyond the muzzle further. IOW, a tuner that doesn't add to effective muzzle weight, can't substantially lower frequency nor widen tuning windows. This is just physics. It doesn't take much weight to change the tune but it does take some to widen the node noticeably.

As a rule, I prefer to use as much weight as rules and gun handling allow, within reason. You can get too heavy, but the range of acceptable weight is pretty forgiving before too heavy becomes a problem, on typical cf BR contour barrels. Beyond that, my tuner, as well as a few others, incorporate some type of dampening other than just weight. After vibration analysis testing and thousands of rounds fired, I'm convinced that the dampening I use is of value. If you go to my site in my sig line and click on tuners, there's a very good read on particle dampening and the science behind why I choose to use what I do for the dampening medium.--Mike Ezell

 

[bigngreen]

Terry, a barrel opens up slightly when machining the muzzle that much. Not good for accuracy.

If you cause the bore to open up with a 7/8 thread you need to learn what you did wrong or get better quality barrels!!

 

[ttfreestyle]

Slicky Ricky , I love that!!!

 

[Rope2horns]

Ok just so I'm on the same page as the guys using tuners.....you do load development with the tuner sitting on flush zero or any zero setting?

 

[gunsandgunsmithing]

Ok just so I'm on the same page as the guys using tuners.....you do load development with the tuner sitting on flush zero or any zero setting?

Yep...doesn't really matter where you put it while working up loads. Just don't move it until you settle on your load. That's just changing two things at once and usually leaves you chasing your tail. If your tuner design can bottom out against a shoulder, I would NOT use it set there.

 

[butchlambert]

If you cause the bore to open up with a 7/8 thread you need to learn what you did wrong or get better quality barrels!!

Young man, you will learn.

 

[Northridge]

For the most part, I am in the crowd that believes barrel tuners are not necessary and finding a load can done by the standard load development process of finding the middle of a powder charge weight, then adjusting seating depth to tighten the groups up. Part of my hesitation or unwillingness to try a tuner is that most tuners require additional work to thread the muzzle. I also believe that you need good barrels and bullets and no amount of tuning will help a bad barrel or if you are using bad bullets shoot the way you want it to shoot.

That being said, I have been thinking about using a barrel dampener for a while because recently I had my Magneto on and with a particular load I was shooting, it went from shooting sub 3/8" groups without the chrono to shooting basically one hole with the Magneto on.

I saw the limbsaver dampener thing but it would not fit a 1.25" straight barrel. I then got to thinking, what if I got a set of O-Rings (1.125" ID) and placed say 5-9 of them on the end of my barrel? My thinking being that maybe this would help to dampen the barrel harmonics, maybe making for a wider window to tune a load? This would be easy on the wallet at around 5-8 dollars total for the rings, and I would move the rings as needed. I am not sure if it will help because the weight the rings are adding is minimal, but maybe the answer is that it will simply make for your load to shoot in more variable conditions because the accuracy nodes widen a bit as you dampen the barrel and reduce the peaks of the sine wave and make them smaller and wider.

Has anyone tried this or is my thought process on dampening off base?

Brian I have also witnessed this with a magno speed in the past doing just as you say. tuners are a variable that can re shape or shape things further a situation I am finding.

Shawn Williams