What is a noodle?

To Lynn...

I was told by Killough himself: "The holes are to let the gas out." As to a "downside", I guess it might be that the holes allow the wind in!
 
To Pacecil
Do they let the gas out evenly over the base of the bullets surface?
Waterboy
 
Lynn...

What you are asking is: Do the holes create, or prevent, an uneven pressure distribution over the base of the bullet?

Imagine the base is at the hub of a spoked wheel. Gas flows away from the base along the spokes. At the hub the pressure is highest and it is lower as you travel out along the spokes. Where the spokes align with a hole in the noodle the pressure would fall off more than where a spoke aligns with a non drilled area. There fore if the holes are equal and evenly spaced you should have an even distribution of pressure over the base. You would also have even pressure if there were no holes - or no noddle.
 
What ahppens when the bullet passes the spot where the holes are located?
Looks to me like it'd be pulling a vaccuam and be dead air. Managing the gasses seems to make a difference if you have a rifle and ammo accurate enough to tell the difference.
One thing I do know is that they work! I put one on a new rifle while testing and shot a 10 shot group in literally one hole, a zero, 'bout the size of one of these emoticon smiley faces. Ammo was some of the first Lapua Exact that came over, and a 40X with a 4 groove Shilen ratchet barrel.
 
To Kent..

When a bullet passes a hole, any high pressure gas anywhere around the bullet will tend to flow into the hole which is at a lower pressure. There would be no vacuum created, however there might be some area where there was no gas flow so I guess this could be called "dead" air.

As ammo becomes more accurate it becomes more difficult, not easier, to determine if you are having an effect on accuracy. If you had very good ammo you probably could never tell what effect you were having on accuracy.

You shooting one ten shot very good group tells you only that that group was a good one. It proves nothing about how the noodle was performing. It does not prove "how the holes work".
 
Pacecil

pacecil said:
When a bullet passes a hole, any high pressure gas anywhere around the bullet will tend to flow into the hole which is at a lower pressure. There would be no vacuum created, however there might be some area where there was no gas flow so I guess this could be called "dead" air.

As ammo becomes more accurate it becomes more difficult, not easier, to determine if you are having an effect on accuracy. If you had very good ammo you probably could never tell what effect you were having on accuracy.

You shooting one ten shot very good group tells you only that that group was a good one. It proves nothing about how the noodle was performing. It does not prove "how the holes work".
Click to expand...

I do not know for sure what the holes in the noodle do. I do know that 4 out of 5 of the top shooters in ARA on the A-Line used the noodle, slider or a bloop tube all year. The fifth shooter tried it a number of times and did not hurt his scores. The shooter who won the Agg-Line has used a noodle the last 2 years. The shooters who came in first and second last year on the A-Line used the noodle. Most of the 2500's shot in ARA this year were using the noodle. All of these shooters will tell you their rifles shoot better in the wind with a noodle than without it. I have used one for 4 years now and I have no doubt that my rifle shoots better in the wind. I am pretty sure my bullet is getting stablized quicker with the noodle. You are right when you say the noodle is a tuner, it also works because of its mass weight which is adjustable. I asked you about a year ago what you thought might be happening with the holes in the noodle. I asked you because you are an engineer. From the answer I received from you I took that you did not know or weren't interested in answering. I have asked Varmint Al some questions about the noodle and he was working them, I expect to hear from him at some time in the future.
 
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pacecil,
Thanks. Like I said, after tuning it in, that noodle worked quite well, I can attest to that. The 10 shot group was one bullet hole, just blacker around the edges where multiple bullets passed through the paper.

Lots of the BR rifles will shoot groups in the zeros in the right conditions and with the right ammo.
If you'd attend some of the big BR matches and see how the top rifles and ammo are shooting it would be a benefit. With your engineering principles maybe something beneficial could be learned.
Accuracy is is accuracy, and the same benefit in all the games. But holding the X on a prone target and a PSL target is a different matter.
when Mr. Pappas and I are talking good groups we're talking .020 to .060 at 50 yards. What do you consider "good groups"?
 
I went on Dan Killough's web site and I've noticed that these are offered in two lengths. Is there any advantage or disadvantage to either length or is it just personal preference?

Also, I've read in a previous post that this takes the place of the weights on the Harrel style tuner so if I order a Harrel style tuner and a J & J slide (or Parallel Noodle) from Killough's I should be all set correct? There should be no need to order the additional weights providing I continue to use the noodle, right?

Now, once I have both of these devices how would I start the tuning process? Do I adjust the Harrel tuner first to find the setting with the best performance and then adjust the weight on the noodle to further enhance performance? Or is it better to find the best weight setting on the noodle first and then fine tune it with the adjustments on the Harrel tuner?

Thanks,

Patrick Nolan
 
Patrick,
I'm sure James Pappas can answer your questions if you'd give him a call.
On mine, I used a Harrel tuner without weights added, and just added the shorter of the two J&J Slides.
 
Noodles and Sliders

Noodles and J&J Sliders are used more in ARA because there is no weight limit. In IR 50/50 and RBA there is a weight limit to contend with in the 3 gun matches. Even though they are legal in the unlimited in both organzations it is hard to swith back and forth when you have your rifle tuned.
 
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