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  #1  
Old 05-21-2020, 10:24 AM
ShawnCarlock

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My new barrel tuner design



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I had some requests to post about the tuner I designed for a 541 Remington rifle project I posted in the Remington section. I had some improved ideas after the first attempt and built a new one for my CZ 457. This new design doesn't require threading or an machining of the barrel. I made it micro adjustable .042" per revolution, adjustable for .635" weighs from 6.3 to 13.1 oz, it is easy to work with and I wanted it to look nice on the rifle. I have seen some very effective barrel tuners out there that I just wouldn't be able to look at on my rifle, so here is my best effort to date in tuner design.

22 tuner 01.jpg

22 tuner 02.jpg

22 tuner 03.jpg
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  #2  
Old 05-21-2020, 10:54 AM
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It looks great, have you had a chance to shoot it yet? You do very nice work and are apparently a very talented machinist. Thanks for sharing.
How does it index?
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Glenn
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  #3  
Old 05-21-2020, 11:39 AM
ShawnCarlock

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There is a split bushing that goes around the barrel like a ferrel and a larger custom allen socket jam nut inside (the allen cap is big enough to have a .280 hole through it for bullet passage". This allows you to simply slip it on the barrel with the micrometer marks up then tighten the jam nut locking it to the barrel in place. It takes all of 5 seconds to mount it up. I designed it like that for guys that shoot different events where some classes allow tuners and some don't. Also not everyone wants to have their barrel threaded. This will also let you keep the tuner when you sell a rifle and run it on the next one or the next barrel on the same rifle. I also tried some vibration dampening ideas in the design. I will post here when I get some rounds through it.
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Old 05-21-2020, 01:04 PM
rflatt
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Really like the concept,nice work. What diameter barrels will it fit and will you be selling any?
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Old 05-21-2020, 02:35 PM
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Originally Posted by rflatt View Post
Really like the concept,nice work. What diameter barrels will it fit and will you be selling any?
^^What he said^^
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Old 05-21-2020, 03:31 PM
ShawnCarlock

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I will be running some after I finalize the design and fully test them. They can be fit to barrels from .750" to .930". I will just need the barrel diameter 1/4" from the muzzle and can ream the inner sleeve to fit. These will only run on straight tapered barrel. If a guy really wanted one on a tapered barrel that was larger than .750" a straight portion .700-.800" long could be cut at the end of the barrel to run one on.
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Old 05-21-2020, 05:05 PM
Hi-NV Shooter
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Quote:
Originally Posted by ShawnCarlock View Post
There is a split bushing that goes around the barrel like a ferrel and a larger custom allen socket jam nut inside (the allen cap is big enough to have a .280 hole through it for bullet passage". This allows you to simply slip it on the barrel with the micrometer marks up then tighten the jam nut locking it to the barrel in place. It takes all of 5 seconds to mount it up. I designed it like that for guys that shoot different events where some classes allow tuners and some don't. Also not everyone wants to have their barrel threaded. This will also let you keep the tuner when you sell a rifle and run it on the next one or the next barrel on the same rifle. I also tried some vibration dampening ideas in the design. I will post here when I get some rounds through it.
Very neat design. a few questions if you don't mind.
if I understand correctly, the way it clamps on to a barrel is like a collet on a mill.
also is there a set screw to keep the setting locked in one place and do you have any O-rings or is it metal to metal with thread cut being the only connection of the two pieces.

Thanks,
Lee
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Old 05-21-2020, 05:29 PM
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Thank you for posting this. More pics of the inside please.
John
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Old 05-21-2020, 05:49 PM
ShawnCarlock

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There is no set screw to lock the position, there is a tight o ring fit to prevent unwanted tuner rotation and also to help deaden vibrations. I tried a couple of different techniques to dampen or eliminate vibration from certain areas of the tuner. I will post inside photos after I am done testing and finalize the design. The clamp to the barrel would be similar to a collet but is not tapered and applies pressure at both ends to keep a solid mating surface and self center the tuner.
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Old 05-21-2020, 08:22 PM
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Very clean, and well executed design.
Glen H
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  #11  
Old 05-21-2020, 08:40 PM
ShawnCarlock

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Thank you, it is a lot of work developing parts on manual machines, but I really developing new gun performance parts.
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Old 05-23-2020, 01:12 PM
FredJ_2008
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What is the weight and what material do you use?

Last edited by FredJ_2008; 05-23-2020 at 01:16 PM.
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Old 05-23-2020, 02:11 PM
Arrowhead
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It certainly has good looks and I am looking forward to seeing your test results.
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Old 05-23-2020, 03:07 PM
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Read the first post, that's where the weight is
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Old 05-23-2020, 05:27 PM
ShawnCarlock

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304 stainless and 6061 T6, weighs 6-13 oz.
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