WTB: Juenke Bullet Comparator

Get or give advice on equipment, reloading and other technical issues.

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ajvanwyk
Posts: 440
Joined: Tue May 17, 2016 5:50 pm

WTB: Juenke Bullet Comparator

#1 Postby ajvanwyk » Tue Aug 27, 2019 11:21 am

Dear all,

I am after a Juenke Bullet Comparator and I am hoping that someone out there has a unit that is gathering dust and in need of a good home.

Please, PM or contact me on 0477299446 if you are that person....

Albert
Albert
Rosedale Rifle Club
Australian Points Series

bolster55
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Joined: Tue Sep 16, 2008 10:46 pm
Location: NE Vic
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Re: WTB: Juenke Bullet Comparator

#2 Postby bolster55 » Tue Aug 27, 2019 12:19 pm

PM sent

ajvanwyk
Posts: 440
Joined: Tue May 17, 2016 5:50 pm

Re: WTB: Juenke Bullet Comparator

#3 Postby ajvanwyk » Tue Aug 27, 2019 1:29 pm

@Administrator I have placed this post in the wrong category. Could you please move it For Sale/Want to buy.

Albert
Albert
Rosedale Rifle Club
Australian Points Series

ShaneG
Posts: 574
Joined: Fri Jun 15, 2012 2:25 pm
Location: Cairns

Re: WTB: Juenke Bullet Comparator

#4 Postby ShaneG » Tue Aug 27, 2019 2:47 pm

Albert
Contact Lou Murdica in California
There is a new machine nor well known out about 2 years ago?
Lou has his own underground testing range - 100 or 200 yards?
Real nice guy
Last weekend at 600 Shot a 3x20 for 600 with 600.53!
He swears by it and probably has a couple of Juenke as well !!

williada
Posts: 969
Joined: Wed Jul 22, 2009 12:37 am

Re: WTB: Juenke Bullet Comparator

#5 Postby williada » Tue Aug 27, 2019 3:23 pm

Now why do you need one Albert? Isn't it mythical? Tee Hee.

ajvanwyk
Posts: 440
Joined: Tue May 17, 2016 5:50 pm

Re: WTB: Juenke Bullet Comparator

#6 Postby ajvanwyk » Tue Aug 27, 2019 8:14 pm

ShaneG wrote:Albert
Contact Lou Murdica in California
There is a new machine nor well known out about 2 years ago?
Lou has his own underground testing range - 100 or 200 yards?
Real nice guy
Last weekend at 600 Shot a 3x20 for 600 with 600.53!
He swears by it and probably has a couple of Juenke as well !!


Thank you Shane, I have reached out to him. I did see his scores, pretty impressive !!!
Albert
Rosedale Rifle Club
Australian Points Series

ajvanwyk
Posts: 440
Joined: Tue May 17, 2016 5:50 pm

Re: WTB: Juenke Bullet Comparator

#7 Postby ajvanwyk » Tue Aug 27, 2019 8:16 pm

williada wrote:Now why do you need one Albert? Isn't it mythical? Tee Hee.


David,

You are right, they may or may not do anything, but I would like an opportunity to see for myself. I have a friend who has one but I fear I may stretch the friendship too far if I keep asking him... not that it has stopped me in the past ;-)
Albert
Rosedale Rifle Club
Australian Points Series

GSells
Posts: 798
Joined: Sun Aug 13, 2017 11:04 pm
Location: Qld

Re: WTB: Juenke Bullet Comparator

#8 Postby GSells » Tue Aug 27, 2019 9:25 pm

Just going back to my teacher Cam Mac , he used to use one and I’m sure he had one and used it in the early days . His opinion to me was , with early quality bullets Cam felt it was worth the effort. But his words were that with Berger bullets he was using at the time , it wasn’t as necessary. But who knows , let the target tell the story !!
Last edited by GSells on Sat Aug 31, 2019 9:00 pm, edited 2 times in total.

wsftr
Posts: 202
Joined: Tue Jan 30, 2018 12:58 pm

Re: WTB: Juenke Bullet Comparator

#9 Postby wsftr » Sat Aug 31, 2019 7:57 am

Something from Eric Stecker - Berger Bullets about them.

We tested the Juenke checker to see if the Juenke could detect voids inside the bullet. First, we marked an empty jacket with a sharpy on the outside to keep track of the relationship between the indicator read out and the position on the jacket.

Then we spun the jacket with nothing inside. The needle moved five deviation units. Next, we place a loose core inside the jacket. The needle moved five deviation units and the needle moved to the same position as it did with the empty jacket,in relation to our sharpy mark. Our last test was to take a toothpick are shove it down the inside of the jacket next to the loose lead core. This held the loose core to one side of the jacket. We spun this jacket with the core wedged off to one side and the needle moved 5 deviation units and was consistent with the position of the jacket in the previous two tests.

I am convinced that the Juenke checker can tell if the bullet is round and straight in relation to how the bullet sits on the ball bearings. This can be helpful and it is difficult to argue with some folks who can show that bullets with low deviation units perform better on the target,mostly long range). I am convinced that the Juenke checker does not look inside the bullet at the density are it would have acted different when we wedged the core to one side.

I am not saying you should not use it or that it is not worth owning,we have one and use it as a reference) but am merely sharing the results of our testing.

Regards,
Eric

Longranger
Posts: 254
Joined: Sat Mar 02, 2013 9:49 pm
Location: Queensland

Re: WTB: Juenke Bullet Comparator

#10 Postby Longranger » Mon Sep 02, 2019 12:22 pm

What is the process that these machines work by?

Is it purely spinning and balance?

Tim N
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Joined: Fri Jan 25, 2013 8:18 pm
Location: Branxton NSW

Re: WTB: Juenke Bullet Comparator

#11 Postby Tim N » Mon Sep 02, 2019 4:58 pm

Not sure if anyone knows how they work, they do pick up variations of some sort which is what we try to eliminate...
We don't rise to the level of our expectations, we fall to the level of our training. Archilochos 680-645 BC


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