EC Tuner Testing, 6 BRA, 105 Hybrid

/ robsreloading

[@ErikCortina]

She shoots! Good job.

[@justflylow]

You have taken the time to develop a load that matches your rifle. Good job on that. Also, your rifle is obviously very well built because it shoots excellent. Good job on that. On the tuner break. First of all, you stated that you were going to run it through the two full revolutions. You did not do that. And if you watched the video on how to find your tune, you’ll know that you will find good spots and then if you continue, it’ll start to come apart again and then you’ll find another good spot. And that is why it is important to do the full two turns. I think the fact that it shows that some settings have wider groups than others means that it’s doing its job. You just have to find what makes you happy. I personally like the tuner and I have three of them now. So far they have made my rifle shoot excellently to my liking. keep the videos coming. I really am enjoying this caliber especially the 6 mm arc which is what I’m working on right now.

[@joelclark2130]

I wish you all the best when you're six millimeter arc 😢 That cartridge is not that great. Really does not shoot lights out in an. AR PLATFORM. There are so many other better cartridges for a r fifteen platform . Wish you all the best.

[@justflylow]

@@joelclark2130 to each his own. I guess someone removed my comment explaining my opinion on the subject. Probably because I referenced another video. No big deal. There are lots of videos that show the 6mm ARC doing a great job. I think 6ARC is a good cartridge. Some may not. It your choice to make.

[@physics18bravo]

You made a great observation on the shooter bias. Why record or gather data if all you will do is say I feel, I feel I feel, I’m happy. If you come up with an experiment, you go through with your commitment and take all the data points and then perform an analysis. Also he isn’t F class, but he wants to shoot out to 1000?

[@wayne-oo]

Funny you and Gavin both test breaks on the same day !!

[@boltactoinbarney]

I'd stick with 4. But negligible with that rifle. All the 6 and 6.5 rifles I have, like the 4 to 4.5 setting regardless of load. Nice shooting sir

[@justice1327]

A few things to consider: one, I don’t know which version of the EC tuner brake you have but if it is generation one you have to eliminate the backlash. This is to say if you work your way up to setting 10 or 12 and you want to go back to 6 you need to dial it past 6 by a few numbers (5,4) and then dial it back up to 6. This is why Eric developed generation two is to eliminate the backlash and the spring holds the setting better. I have noticed on my very accurate rifles. The EC tuner break is much harder to tune however, on carbon fiber, hunting barrels and especially using factory ammo. It makes a huge difference in precision and accuracy.

[@USAACbrat]

i have a very stiff barrel, 16" 300 BO, 7/8" before the thread

[@RCx44]

Then rub your magic beans and it still doesn't make a difference.

[@lifesfordeath]

I tend to tune at further distances 200 or 300 if possible. The majority of the time you want the groups obviously to be round but we tune more to get the vertical out. I would re try tuning out at a further distance and see what the groups form

[@lmbear]

Nice. Making the Browning/Winchester BOSS great again. The tuner/muzzle break, ugly thing on the end of the barrel that guys used to love to hate on. They are great tools, if you don't know how to fine tune your handloads, or shoot a lot of factory ammo.

[@Mike-xi4zt]

Who cares what it looks like. If it actually works.

[@RCx44]

​@@Mike-xi4zt it doesn't work

[@ewathoughts8476]

Basically shows that if the load is already tuned the EC Tuner can have little effect.

[@michaelg1164]

Just found your channel and thanks for putting these videos out. Some good stuff here. Setting 0 has a little horizontal, setting 2 tightens, setting 4 has a little vertical. Setting 2 is likely your best splitting the difference. Setting 8 doesn’t have tight clusters before or after. That’s one to stay away from.

[@brsmith2801]

Good stuff!

[@MrBoo1963]

DANG, Love it!

[@USAACbrat]

My tuner Varys by the day, might go 8-9,or6 changes with the bullet weight sometimes.

[@6n518]

Try 4 again and I bet it opens up. I've had the same experience when it comes to tuners. No matter the caliber or rifle. I'll get an awesome group at a certain setting and keep going with tuner changes. After I will come back to verify a setting and the group opens up. But if I take the tuner off, I get consistent groups and often much better groups than with the tuner. I think tuners are more geared toward factory ammo. I don't shoot factory ammo in anything but pistol so I can't say for sure.

[@USAACbrat]

you have an accurate rifle, mine, gave me better groups with Boattail bullets than i was getting but the rifle shot the same as when i got it, well i think it makes more difference with thinner barrels.

[@dahut3614]

I think it's interesting that in the Ultimate Reloader .30 Cal. muzzle brake test, the EC Tuner brake only reduced peak recoil force by 28.7%, while the leading contender reduced peak force by 48.8%- surely at the cost of greater rearward directed muzzle blast. The radial design of the Bergara, which is similar to the Savage brake, resulted in a peak force reduction of 28%.

[@RobsReloading]

Mine is the 6.5mm so prab a bit better. 6 BR is pretty low recoil and haven't noticed an issue.

[@Mike-xi4zt]

@@RobsReloading less burned powder regardless of cartridge normally equals less exploding gases to be affected by a muzzle brake brake.

[@maxcoatlhunter4322]

If it were me, I'll keep it at #2. To bad that tuner does not fit my 6.5PRC or I'll buy it from you :)

[@douglasbattjes3991]

I'm wondering why you didn't use the 4 or 8 setting, those are almost one hole group's ? Great video on the EC turner, love mine and have the same result's 👍👍

[@RobsReloading]

Wanted to go in between two good settings. With this sample size I would say all the groups are actually probably the same. Went with one I thought would be reliably good.

[@macdaddy32]

Do you like the mdt weights? Thinking about getting some.

[@Chevy2U]

You should sign-up for the Erik Cortina KYL.

[@RobsReloading]

Long drive to Texas from me

[@meld9]

How you liking the front rest?

[@kyley808]

Nice SD and ES is there a reason you grip the rifle like that do you find it better then other ways

[@Mike-xi4zt]

The way he manipulates the bolt makes me cringe.

[@bobbywinn6548]

Did you do any kind of glass bedding in the chassis or is it just torqued?

[@RobsReloading]

Just torqued to 65inch #. The seekins Havak hit was designed for this chassis so don't see a reason to.

[@juanherrera2672]

Pma tool has a mirage shield that will come in handy for ya $10 shipped.

[@eggbert191]

So the idea with the tuner is to take a mediocre group with good sd/es and tighten the group?

[@treverthompson7245]

No it’s a bunch of mumbo jumbo that they try to sell on the flawed premise of harmonics affecting the bullet before muzzle exit.

[@RCx44]

No just shifts poi by shifting a weight on the muzzle.

[@jonlennon3348]

Who made the barrel and chambered it?

[@RobsReloading]

Krieger barrel chambered by me. Video on the channel of this

[@raythemanroe]

Can I ask what magazine you are using for that?

[@RobsReloading]

Mdt 10 rounds br mag

[@raythemanroe]

@@RobsReloading thanks

[@powswe]

Thank you sir, you have proven once again that tuners on a well built precision rifle is worthless and a waste of money. There is applications for the tuner, but a centerfire precision rifle is not that application. All your shots are all within the SD of group size for that rifle and load. Now stop wasting components load developing and concentrate on getting rid of that "cold bore".

[@treverthompson7245]

It’s almost like the tuner has no real effect on raw precision and just results in point of impact and not the actual precision of the load. If you shot the same tuner setting you’d get groups all within the same dispersion of all the other tuner settings you tried.

[@someoneelse1385]

That’s exactly the conclusion litz reached and wrote about in his latest book.

[@Mike-xi4zt]

You're not taking into account that a bull barrel is not affected by vibration as much as a thin barrel. Raw barrel stiffness means less the tuner will effect it.

[@treverthompson7245]

@@Mike-xi4zt this is just not true. Vibration and harmonics occur, after the bullet exits the muzzle. There’s several examples of high speed footage showing this. If you do the same test with a sporter barrel it will yield the same results. Change in point of impact but not actual raw precision.

[@Mike-xi4zt]

@@treverthompson7245 I've watched high-speed video of barrels being shot. If you think the barrel doesn't vibrate until the bullet exits you're delusional. Bull barrels have less vibration. Shorter barrels have less vibration. Because they do not bent as easily. The barrel performs several operations at once. It contains the travel of the bullet and determines where it goes. You can bend the barrel into a couple of loops and where are the bullet goes is determined by the last fraction of inch of barrel and the muzzle. If the end of the barrel is moving that gives random directions of departure. The way to minimize that is to make the metal of the barrel larger diameter, shorten the barrel, adjust the length of the barrel to give a consistent vibratory angle of departure. The barrel also provides the role of being a bullet swagger. The barrel takes the bullet and changes it's shape into something different, than what started out as, after it makes its journey through the barrel. Adjusting seating depth, adjusting powder charge, adjusting what toilet paper you use to wipe your ass, effects accuracy by changing the vibration of the barrel. All musical instruments work off of changing the vibration caused by playing the instrument. There are well-known principles of physics about vibration and resonant frequencies. When you tune a radio to a radio station you are tuning to the resonant frequency of that circuit. All things including rifle barrels have a resonant frequency. A "barrel tuner" changes the effective length of the barrel to change the way the barrel is vibrating. The same thing happens when you move the slide on a trombone. It changes the resonant frequency to produce a different note. If what you say is true that a barrel doesn't vibrate until after the bullet leaves the barrel, then there would be no need to free float the barrel from the stock, because you said the barrel doesn't move until the bullet exits the barrel. So your statement about the barrel not moving until the bullet exits is complete total nonsense.

[@treverthompson7245]

@@Mike-xi4zt buddy just because you’re easily swayed by snake oil salesmen doesn’t make me wrong. Take the reloading all day class or just watch his videos and you will see.

[@guardianminifarm8005]

Tells us that this bullet, powder, charge seat depth shoot great from this gun. Lol.

[@user-tz1wv7nz4g]

All very interesting but why do you not work the bolt correctly !!! Watch a Ryan Cleckner clip he'll run you through how to do it right.😮

[@JackLucas-jh1eo]

I am not sure why you are engaging in this exercise. Your gun shoots superbly and the tuner is not adding anything its accuracy.

[@RobsReloading]

Simply a test to see if there is anything to gain by moving the tuner. It also gave me a reason to shoot a larger sample across the chronograph.