MPA Barrel Tuner
- Thread starter Off Duty Ninja
- Start date
Here is the 3 page Thread started by @Dthomas3523
Good video showing effectiveness of a tuner
I run these. I’d almost consider it a must have for factory ammo.
www.snipershide.com
IMO, it’s worth it.
Use it to tune factory ammo
Use it as a replacement for seating depth tests (for prs this works) or in conjunction to make the load even better.
Use it to tune factory ammo
Use it as a replacement for seating depth tests (for prs this works) or in conjunction to make the load even better.
Load of crap , its far too light and the weight is behind the muzzle so would suggest to be marginally effective at best
Have been designing ,building and shooting all sorts of barrel tuners for a decade and most pack far more weight and more adjustment compared to this one. Shorter the barrel heavier the tuner needs to be. But honestly i wouldn't use a tuner on any practical type shooting
Erik Cortina is mostly in F class game and barrels are pushing 30-32 inches and guns are hitting the weight limits for the class hence tiny tuners, expect to see some on ELR guns sooner than later.
If you wanted something kinda effective it would have to be something along these lines with weight up front
http://www.varmintal.com/aeste.htm
Have been designing ,building and shooting all sorts of barrel tuners for a decade and most pack far more weight and more adjustment compared to this one. Shorter the barrel heavier the tuner needs to be. But honestly i wouldn't use a tuner on any practical type shooting
Erik Cortina is mostly in F class game and barrels are pushing 30-32 inches and guns are hitting the weight limits for the class hence tiny tuners, expect to see some on ELR guns sooner than later.
If you wanted something kinda effective it would have to be something along these lines with weight up front
http://www.varmintal.com/aeste.htm
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Thanks for the info. This is all pretty interesting information. I don't plan on getting one for my rifle since I already found a really good load. Just wanted to see what other people's opinion were on it.
Tuners are not effective enough to tune mismatched factory ammo ,they are used with already finely tuned ammo in very accurate rifles , its hard to tune rifle that is not accurate as the tuner induced changes are just too small to call what is really going on .
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I can unequivocally tell you that you can use this tuner to reign in factory loads. At least for PRS purposes.
Have consistently been able to bring moa or barely sub moa factory ammo in rifles to under .5moa.
Not to mention, you can watch the video Paul made of his groups changing dramatically using the tuner.
I have observed similar results with my loads. Without adjusting seating depth, I’m able to dial from .5-.6 down to .2/.3.
This has been repeatable enough I no longer mess with seating depth for prs loading. Use chrono to find powder node, seat .020 off lands. Adjust tuner to bring it into .2/.3, done. Every few hundred rounds, load a few a bit longer and see if I need to adjust my BTO length for throat erosion.
Again, this is for practical shooting. Which is what MPA (and this forum) mainly focuses on.
I have observed similar results with my loads. Without adjusting seating depth, I’m able to dial from .5-.6 down to .2/.3.
This has been repeatable enough I no longer mess with seating depth for prs loading. Use chrono to find powder node, seat .020 off lands. Adjust tuner to bring it into .2/.3, done. Every few hundred rounds, load a few a bit longer and see if I need to adjust my BTO length for throat erosion.
Again, this is for practical shooting. Which is what MPA (and this forum) mainly focuses on.
Anyone have any recommendations for a tuner for a 308 Ruger RPR? I have to shoot GFMM 168s per department policy and would love to tighten them up a bit.
I’ve been looking at this one due to its not needing specific barrel modifications.
https://www.kineticsecuritysolutions.com/products/adaptive-tuning-system-ats
The new EC tuner brake might be the closest to ideal tuner brake.
EC tuner brake is one of the first muzzle brakes i have seen to actually move the tuning weight past the muzzle, only limitation might be if its heavy enough given it same diameter as the brake and has minimal adjustment range.
https://erikcortina.com/shop/ols/products/ec-tuner-brake-ss-65mm
EC tuner brake is one of the first muzzle brakes i have seen to actually move the tuning weight past the muzzle, only limitation might be if its heavy enough given it same diameter as the brake and has minimal adjustment range.
https://erikcortina.com/shop/ols/products/ec-tuner-brake-ss-65mm
Yes it's that simple.
I've got 3 barrels threaded 5/8-24 including my Carbon6 that I can switch between without any machining.
I've got a 17 hmr that's threaded 1/2-28 with a 5/8-24 adapter that I can also use it on.
Brake,Suppressor,Thread protector they all fit and work fine.
The weight is a bit light for heavier contour barrels.
The original posted in this thread absolutely changes my group sizes. This brake didn’t.
Was expecting as much as its looking light for barrel contours used these days in precision rifles.
My experiments in the past were almost 3x as heavy and with much more adjustment range.
In Rimfires we go up to 350g on tuners on Centerfire BR its typically around 110-150g and most have weight past the muzzle. Longer the barrel lighter the tuner, same for thiner contours. In centerfires , folks sometimes bore the muzzle back more than an inch to get a more effective tune.
Some of use like to play with PRX formula to determine the tuner length and opening or muzzle backbore length, tailoring the tuner length to bore and barrel length.I personally had quite some success with theTony Purdy's PRX formula applied to my tuners.
Yes. The EC works well for me. So I’d imagine the ATS would work about the same.
Someone gets it.... not to mention it actually looks clean on the barrel.
And if the weight doesn't make a change, I'd try testing at longer ranges then 100yds/m. I run tuners on my other rifles, I would NEVER test it at 100yds/m. Its positively compensates for that distance then ONLY and it's very easy to get either unlucky or lucky with groups at short range.
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That was my concern as well as unlike in rimfire tuners where tuner is tuned to exact distance in centerfire shooting distances are far beyond the 'tuned distance' so most folks might never realize tuner potential. Definitely best if you can tune it at longer range to get more practical result.
The issue with this in a prs/nrl setting, is we don’t know what the ranges will be. If for example you know going in that you have a kyl at 600 yds, then you positively compensate via tuner for 600yds.
For prs/nrl, tuners make much more sense as a replacement for seating depth or to tune factory ammo.
If you utilize it to make a .3moa group at 100, it won’t magically open up at 1k unless your velocity ES is wide enough. And we shoot targets large enough that ES would be huge.
So, there are issues using a tuner like you would at a 1k F class match.....for prs. The main issue would be more work for nothing (unless as mentioned above, you knew an important range).
But you definitely know that it's not going to be 100y , so more than anything it's down to what you can test depending on the range available and conditions enabling it. In any case, if it's not grouping at 100y it will not magically group better at 600y
But then wouldnt you test at as far as distance as your able to cover the bases? You would know based on location and alike what distances you could be shooting out too. So test as far as your able. If you can only test at 100 then fine. But if you test at 100 and you have access to 500, then wouldnt one test at 500 to get optimum results. Not to mention confidence in the system and tune up which is half the battle usually.
I dont worry much about seating depth as long as ignition is consistant. Thats when I change it. Tuner or no tuner.
I dont see tuning beyond what is needed for competition as being a bad thing provided one does it right. I'd rather have less vertical dispersion as far as I can shoot and the tightest gun possible to give me more leeway with my wind calls.
I certainly agree. I compete out to 1000yds, I tune as far as Im able. Usually 800m/900yds. This has served very well.
Im looking towards a tuner brake for my varmint rifle, that will get dialed in at 500m as thats the max diatance I plan on shooting it too. But it would still hold good accuracy out further.
I was at a 1,000 yard F class match last year. Was paired with one of the best national F open shooters. They say you are supposed to tune seating depth and tuner and leave it alone. During sighters I watched him twist it here and there and go from a 9, high 10, low 10 and to XXX, then shot for record. I was sold.
Bought one, threaded barrel and start testing soon.
Bought one, threaded barrel and start testing soon.
