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+--- Thread: EC Tuner Brake (/showthread.php?tid=22595)
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EC Tuner Brake - grayfox - 05-18-2021
Been reading this, and full disclosure I'm not a fan of the "tunable" brakes... however honestly if it helps a guy even just mentally (heck even if it Doesn't help) and he likes it, good for him.
But I think you'd get much more mileage and more repeatable results by tuning the cartridge load.
Plus using a really good barrel. Buried back there was the comment, still true, that with a rack grade barrel you are pretty much flipping a coin.
But like I said, if you like the brake go ahead and use it/tweak it/shoot with it.
At the least you'll get trigger time with your gun.
edit to add (somewhat tongue in cheek): if you want to measure results, might as well use an objective standard, not a personal or relative one. Back in the day, the missiles we shot were capable of better than 0.091 inch/1000 ft (MOA won't cut it for ranges over 2000 mi, lol), and there were even more accurate ones than we carried.
EC Tuner Brake - lazyengineer - 05-18-2021
Interesting topic, and great to see someone posting and doing tests. Though as Klem notes, the variability of results as a function of tuning the break, is about the same as the variability of results I get just doing replicates, so it's tough to conclude much. Interesting all the same, and I appreciate the testing and reporting.
I will say, when i comes to breaks, I have some design-bias these days. I would never buy that break - but not for the reasons you might be thinking. I find the large flat impact flanges that this break has (4 of them) are highly effective force capturing surfaces for reducing recoil. I've also found they are highly effective at rebounding and directing that blast back at the shooter and those beside him, quite fiercly, and it just can get unpleasant. Design features I look for in a break today, are systems to manage that blow-back. I have found two design elements that I think (well, I think) work and help.
1) a protective blast-skirt between the flat flange area and the shooter. The Ruger PR break does a nice job of this, but others sometimes will too. This is where small diameter holes are drilled and strageically placed inline bettween the shooters face, and the main blast area. They are drilled in the main chamber area of the break, and direct the blast directly out. Obviously one can only "direct" a gas expansion blast so well, but in any event, they do appear to create a pre-blast "skirt", between the main blast area, and the shooter. Then when the main blast hits the flange, which rebounds the blast directly back to the shooter, that rebounding blast encounters that "skirt" blast zone, which takes some of the sting out of it.
![[Image: 90590B.jpg]](https://shopruger.s3.amazonaws.com/products/90590B.jpg)
2) redirect the blast out at a more angled degree, but without the direct flange with it's flat rebound right back at the shooter. This is the BCM Gunfighter design. And this one definately works. It does a pretty good job as a muzzle break, but the concussive high noise blast is dramatically less than other break designs. It's not quiiite as good of a break, but works pretty darned well.
5.56 version is the same size and weight as A2 FH, which I value. This is my favorite general purpose 5.56 muzzle device now:
Here is their .30 cal version. Which is longer unfortunately, but makes a great P&W option for a 14.5 Grendel barrel. If you look closely, they have a little port on there on each side, right between your face and the main blast area, to give that "skirt" I was talking about, incorporated into it as well.
https://www.themusastore.com/collections/bravo-company-mfg/products/bravo-company-bcmgunfighter-compensator-mod-1-30-caliber-5-8x24-muzzle-device-steel-black-bcm-gfc-mod-1-762
3) I've also taken to just running switching .30 cal breaks on 6.5's. I used to bemoan how hard it is to find 6.5 diameter breaks. But anything that makes that flange rebound surface lesser, will decrease it's effectiveness, but also decrease it's blast effect. I run a .300 BO Gamma break on my Grendel, and am very happy with that little A2 FH sized break.
All of these are "tunable" by different crush-washers or changing out shims. Though in my opinion, in a semi-auto rifle and to a handloader, a tunable break is just one more thing with settings, that I don't know what the right setting is.
Also, I value a small and light break. I like to keep my guns as tidy in shape and weight as I can. Adding 3" of heavy steel break on the end, such as this tuner, undermines that goal. If it's bigger than an A2 FH, it already has a strike against it with me.
EC Tuner Brake - newb - 05-18-2021
Folks- the basis for my info at this time is what can it do for factory loads. Pertinent for the people that dont reload.
I hand load and share the same preconceived bias that this wont be productive in that application. I do plan to try it anyway to prove or disprove, that is separate. Lets push all that off the table.
Heres the behind the scenes info- I had to force time in the middle of a project to finally just get out and send some lead in short time window.
I only had 40 rds of factory ammo hence why 3 shots here, 4 there, not going further on the dial, not trying odd numbers along the way.... again, this is a fly over that shows me its worth putting under the microscope with further / better testing. It shows to others that are interested that yes, it does effectively brake and tune.
BR most dont run brakes. 3 gun more common. What is our application and do the pros outweigh the cons in that environment?
Sure, I might not be standard by measuring groups via OD. In the end my measured change produces standard and accurate change vs the next person via delta OD. I gave that info because if I get pic posted peeps will see my 1 (via OD) is the next persons 3/4 (via center to center).... and both of these grouping call outs are diff than the old Soviet method.
I suppose I can say it like this; I purposely add in an error margin in the beginning rather than calc with hardline values and add for possible error margin at the end when considering to squeeze or not. As long as we know what language the other is speaking we can translate it.
Klem pounced me on this, but I have my own purpose why I look at a group within a group. When faced with a narrow window -tighter than gross MOA / MILS including all fliers- and only have the region of the smaller bulk group within the overall to work with, I want have an idea what my hit probability in that smaller range is.
If its a lone yote, I have 75% hit probability, wont get another opportunity today, I squeeze on it.
If theres other yotes in area, 50% probability, there is opportunity to get closer or they come more into the open.... I pass for the better opportunity.... or 90% probability I might take it.
EC Tuner Brake - Lemonaid - 05-18-2021
Here is an old vid from Browning on the B.O.S.S. Go to about the 5 min mark for how to demo. https://www.youtube.com/watch?v=GQGI6HYsTBU
EC Tuner Brake - jasper2408 - 05-18-2021
I went back and watched the 2 videos from EriK Cortina and F Class John that discussed using the EC tuners and both of them shot 2 shots and if they were not touching then they adjusted the tuner up by 2 then shot again on the next target and no chrono data was needed as the target is all they looked at. When 2 shots touched then they would shoot a third shot at the same target for grouping. Cortina was using factory Berger ammo in a 6.5 Creedmoor AR10 and F Class John had his bolt action competition rifle, I don't remember his caliber. F Class John had a different style of tuner on his rifle but it was made by EC and worked the same as Eriks tuner did. Both rifles had high end barrels so that has to be taken into account. Both stated that once they settled on a group then they locked down the tuner and they didn't adjust it again. F Class John did say that when he was shooting in competition one time and everything was going off the rails and he then referred back to the original targets to decide which way to adjust the tuner that day (up or down) but he has only done that once.
If the tuner messes up the harmonics so much that the groups are that large before you get a chance to dial them in then not sure if there is enough adjustment to actually help. Might be a different story for handloads developed with the tuner mounted though.
Just some more food for thought.
Thanks newb for taking the time and expense to test this tuner.
EC Tuner Brake - jasper2408 - 06-04-2021
I was watching the newest gavintoobe video on the 6mm 110gr A-Tip and he mentioned that he will be putting up a video of his testing of the EC Tuner Brake in the future. Didn't say when but just a heads up to watch for it if you are interested.
EC Tuner Brake - BVickery1974 - 06-10-2021
jasper2408 Wrote:I was watching the newest gavintoobe video on the 6mm 110gr A-Tip and he mentioned that he will be putting up a video of his testing of the EC Tuner Brake in the future. Didn't say when but just a heads up to watch for it if you are interested.
The video is up, TESTED: NEW EC Tuner Brake
It was very interesting to see the results.
EC Tuner Brake - jasper2408 - 06-11-2021
I was reading the comments below the video and some of the people love it, some hate it, and one guy dislikes Erik Cortina "a lot" (could have been Erik himself disguised or a buddy of his messing with him).
They did shoot the factory ammo first, without the brake, then they put the brake on to see if it would help and it seemed to improve the groups.
EC Tuner Brake - pinetreebbs - 06-24-2021
Found a review of the EC Brake today:
[video=youtube;aKfPybSUkbI]https://www.youtube.com/watch?v=aKfPybSUkbI[/video]
EC Tuner Brake - jasper2408 - 07-24-2021
Here is another recent EC Tuner review:
https://www.youtube.com/watch?v=PVkt-MzYPjc
This fella has some pretty good testing videos also.