Bloop tubes

[redrockranger]

I need some help from the more experienced 22 rimfire shooters. Bloop tubes worth the cost or are just a gimmick ? I have a Harrels tuner for starters.

Thanks

 

[Kerry Spurgin]

if you are shooting scope or F class or benchrest you probably have what you need.

A bloop tube is just an extension of the barrel to mount iron sights on or to tune the muzzle harmonic to the barrel- if you adjust the length of the tube.

Most competition small-bore prone and position shooters use a 'tuner tube' which has a tuner built on to it to adjust the weight distribution and they will adjust the length first and then the weights to tune the rifle.

 

[1911nut]

I got the smallest groups from my 40x @50yds using a bloop the length cut as prescribed by Tony Purdy screwed on my Harrell which was then tuned by Hopewell. I shot it enough to see an improvement, more consistency. Not a huge improvement but it’s there.

I don’t know enough to be able to talk much about the various theories but one theory is the bloop tuned by PRX is tuning the gas pulses in a closed end tube. The Harrell tunes the harmonics of the barrel’s vibration.

 

[1911nut]

Here's a thread about Don Blue’s bloop and what he thinks it does.

https://www.rimfirecentral.com/forums/showthread.php?t=1168585

“The Harrell tuner is to minimize the barrel vibrations to lessen the vertical
stringing of a shot group. The extension tube is to provide consistency in the gas blowout when the bullet exits the muzzle. Well, that’s the basic theory, anyway.“

It seems to me that the science of barrel tuning is still developing.
Online discussions on the topic have become energetic.. ...

 

[NorCalMikie]

Had one Guy at the range shooting with a Bloop Tube. Got called on it by the range master for shooting a "silencer"? (this is California and a silencer is a NO NO)Just shows to go you that some folks aren't as smart as we think.

 

[USMCDOC]

Had one Guy at the range shooting with a Bloop Tube. Got called on it by the range master for shooting a "silencer"? (this is California and a silencer is a NO NO)Just shows to go you that some folks aren't as smart as we think.

Esp being a "range master".. mmmmmm hmmmmm

 

[Pawnee Bill]

Bloop tube, I thought you were talking about a M79 Grenade Launcher.

 

[velocette]

The original and primary purpose of a bloop tube was and is to extend the sight radius of iron sights.
the longer the sight radius the smaller the dispersion. They're not needed with optics but could be used to add mass at the end of the barrel. All the ones I've seen are aluminum so the mass would be minimal.

 

[jsof]

I tried a bloop tube on my Harrel tuner recently. First I found the length that in combination with the inner tube of the Harrel came out to the 3rd harmonic using Purdy's formulas. Interestingly it was identical to his long slide length. (Look at the print outs for calculating the lengths for a JNL tuner using the PRX formula if you aren't familiar with these terms or you can PM me for my limited understanding.) I then trimmed the bloop tube that they sell for Harrel at Killough's to the right total length and tried it out at the range on the end of the tuner after lowering the Harrel setting to compensate for the extra weight of the tube. I ran this against no tuner and a Harrel tuner at the setting that works best on my rifle. So far I have only shot about 25 rounds of each of these set ups head to head but at 50 yards the Harrel averaged 5 shot groups of .238", using no tuner averaged .267" and the tuner plus bloop was .274" this was done using a Center-X ammo lot that I bought after testing at the Lapua test center in Ohio. And, there was no breeze at all that day. I think it can help, but I may not have the perfect setting or length down yet and plan on tweeking it in the future.

 

[JMayo]

I see JJ Slides (I have one) or something like them. An aluminum tube that screws to the big end on a Harrell tuner
Some I know use them to achieve the purity prescription length.
Some use them because they tighten up shots.
There is allot of speculation on what they actually do.
I know my unlimited rifle shoots better with than without.
I wish it didn't. The thing complicates cleaning tuner, crown.

 

[dc.fireman]

I need some help from the more experienced 22 rimfire shooters. Bloop tubes worth the cost or are just a gimmick ? I have a Harrels tuner for starters.

Thanks

Bloop tubes can perform a variety of functions, chiefly they are used to extend your iron sight radius, which in turn makes your sight alignment more precise. The downside to this is that it also decreases your sight's movement value: a normally 1/4 moa per click sight, can drop to 1/6 moa, or an 1/8 moa to 1/10 or even 1/12.

Increasing your sight radius, means that you will also need to increase your front aperture size. When I increased my sight radius from 26" to 30" on my prone gun, I also needed to increase my front aperture which had been a 3.8, to a 4.2. If you use an eagle eye, you can count on increasing the aperture size, further.

Several bloop tube makers are incorporating tuners into them, which in my opinion is a slick idea, killing two birds with one stone. YMMV

-tc

 

[Hi-NV Shooter]

Here's a thread about Don Blue’s bloop and what he thinks it does.

https://www.rimfirecentral.com/forums/showthread.php?t=1168585

“The Harrell tuner is to minimize the barrel vibrations to lessen the vertical
stringing of a shot group. The extension tube is to provide consistency in the gas blowout when the bullet exits the muzzle. Well, that’s the basic theory, anyway.“

It seems to me that the science of barrel tuning is still developing.
Online discussions on the topic have become energetic.. ...

Rimfire tuning is about barrel timing or more correctly bullet timing. placing the correct amount of weight at the muzzle is how you time the barrel, get it right and you never need to touch the setup again.
with your best PRX setup are you able to shoot random lots of say CX and they all shoot same POA? every time?
remember I posted to that RFC thread and showed what I got using a bloop, and it had nothing to do with the PRX

Lee

 

[DiOrioMFG]

Below are a few links to posts from our Facebook page about the tuners we manufacture. Our tuners utilize a locating collar which allows the tuner to be removed for cleaning or storage and enables the precise relocation of the device when reinstalled on the barrel.

https://www.facebook.com/turboactions/posts/1119591144855525

https://www.facebook.com/turboactions/posts/1140312459450060

https://www.facebook.com/turboactions/posts/1562918790522756

Best Regards, Anthony DiOrio

 

[1911nut]

Rimfire tuning is about barrel timing or more correctly bullet timing. placing the correct amount of weight at the muzzle is how you time the barrel, get it right and you never need to touch the setup again.
with your best PRX setup are you able to shoot random lots of say CX and they all shoot same POA? every time?
remember I posted to that RFC thread and showed what I got using a bloop, and it had nothing to do with the PRX

Lee

Lee,
I’ve read enough about bloop tubes, ok, yeah on the interweb but information from seemingly experienced, knowledgeable shooters to want to experiment with them.
There’s enough theories about what they do and how they do it, except for increasing sight length on iron sight guns, it’s starting to look like magic....
As I mentioned above, I did see improvement with a PRX bloop on a standard Harrel but could be a half turn on the tuner without the bloop would have done as good.

I haven’t seen any improvement using the bloop so far at any of the best settings on your light tuner.

I shot this morning, things went off the rails for a while then I went back to a previously tried tune and got some good groups. I’ll send you the target.

I’d like to find a light weight maybe carbon bloop that is easily adjustable for length, think trombone. Why not make it more complicated .

 

[Hi-NV Shooter]

Below are a few links to posts from our Facebook page about the tuners we manufacture. Our tuners utilize a locating collar which allows the tuner to be removed for cleaning or storage and enables the precise relocation of the device when reinstalled on the barrel.

https://www.facebook.com/turboactions/posts/1119591144855525

https://www.facebook.com/turboactions/posts/1140312459450060

https://www.facebook.com/turboactions/posts/1562918790522756

Best Regards, Anthony DiOrio

Hi Anthony, Can I ask how much the the BR model weigh? by the way a friend just had a V3 put together and it is one slick action.

Lee

 

[DiOrioMFG]

Lee,

Our standard BR tuner weighs around 8 ounces.

Best Regards, Anthony DiOrio

 

[Hi-NV Shooter]

Lee,

Our standard BR tuner weighs around 8 ounces.

Best Regards, Anthony DiOrio

Thanks Anthony

 

[1813benny]

I highly recommend the DiOrio tuner tube. Excellent fit, repeatability and well defined clicks for positive adjustment while tuning.

Best Regards,
Ken

 

[Lead Thrower]

Esp being a "range master".. mmmmmm hmmmmm

Common in California, actually, since it reduces the muzzle report.

 

[VLNBYR]

I've never had a bloop make a rifle shoot worse, sometimes better. I always tell people I use one because it sounds KOOL.