Quoted: the real advantage of fluting that I haven't seen posted here, is that fluting improves heat dissipation by increasing barrel surface area.

While a good fluting job on a larger diameter barrel can certianly improve cooling, that's not the subject of this topic, so that's probably why we are not discussing it.

Please note this particular topic is "weight saved from fluting?" and not "Benefits of fluting?" so that's probably why you have not seen the other benefits posted here.

Quoted: You don't have to be a topic nazi

Thanks for killing the thread...

Godwin's law

Quoted: It's been my experience with two fluted barrels that GOOD fluting,  that is, REAL fluting like Bushmaster or KKF, NOT the little surface marks pictured on page 2, will save you a few ounces. Deep, substantial flutes in the barrel do make some difference, and I still can't seem to shake the notion that a heavy fluted barrel is stiffer than a medium profile barrel of the same weight.

There are tradeoffs both ways...

The main reason I DON'T do fluting is that when you cut good deep flutes, there is also a good chance that you are distorting the bore.
Remember that the majority of barrels we use are button rifled.
That means they are cold formed and therefore pre-stressed.
Now, when you cut that flute, the stresses get relieved in that area and the bore can move around.
I think most of us would agree that anything that distorts the bore is going to be bad thing for accuracy.
This is probably another reason that many fluting jobs are very shallow, not to mention that shallow fluting is easier/cheaper to do than deep fluting.
Turning down a barrel to a lighter profile can also release some of the stresses inherint in the barrel blank, but the important thing is that you are releasing them the same amount all the way around.
In this case, the bore may grow slightly, but at least the shape stays the same.
For people that want a fluted barrel, I only use Krieger blanks.
Krieger is one of the only companies that does the profiling and fluting before they lap the bore.
Any changes caused by fluting are corrected before the blank becomes a finished barrel.

Quoted: I am going to review the posts and see where it was decided that YOU were elected "Topic Master".

I was never elected "Topic Master" and my reply was not meant to be sarcastic.
You mentioned other aspects of fluting and I simply stated that it is not within the scope of the topic:"weight saved from fluting?"
KarbineKid then also stated that he is aware of the other aspects, but his question pertains purely to the weight aspects...

Quoted: I know that fluting will improve heat dissipation and harmonics. That is why i am interested in the amount of weight it will shave off.Weight reduction is the topic

Should I tell you "Merry Christmas" or "Happy Holidays" as not to offend?

Quoted: As Randall pointed out, he works mostly with the button-rifled barrels.  Those barrels are cold-formed and fluting them can relieve stress and give you some results you wouldn't like.

When working on a customer provided barrel, there's about a 95% chance it's a button rifled barrel because the likes of Colt,  Bushmaster, Rock River, LMT and CMT all use button rifled barrel blanks from various makers.
I have no control over this.

There's no definite answer.
It varies with each shop.
Everyone has a different idea about how thin they want to leave the barrel wall at it's thinnest point.
The thinner the barrel to start with, the less they will cut away.
I can flute a featherweight for you.
I'll just grind 8 flats on it about 0.020" deep
How's that?

Seriously though, Krieger told me last week that they will NOT flute a barrel than is less than 0.900" in diameter between the chamber the the FSB.
Then they want it to be at least 0.750" out front before they will flute between the FSB and muzzle.
Having said that, let's take bushmaster as an example now.
They are fluting HBAR barrels.
HBAR's are 0.875" between the chamber and FSB. and 0.730" out front.
I don't know how deep their flutes are, maybe someone here can measure and post that.

If you fluted a medium profile barrel between the chamber and FSB, you would want to leave at least a 0.175" barrel wall thickness and 0.200" is more comfortable.
Doing the high math, that's 0.224" + 0.175" + 0.175" = 0.574" effective diamter at the bottom of the flute minimum and 0.624" being more comfortable.
Take those effective diameters and subtract them from whatever major diameter you happen to be working with and half of that is how deep you are likely to get the fluting to be.

Out in front of the FSB, it's another ballgame.
by now, pressures have subsided.
You can probably go to 0.125" wall thickness.
Now you have en effective barrel diameter of 0.474".
Subtract that from whatever your barrel happens to measure and half of that is probably how deep you can get it fluted.