Quantcast

LR Tuner

Discussion in 'Competition Shooting' started by BigDog1955, Aug 15, 2018.

  1. BigDog1955

    BigDog1955 Member

    Joined:
    Mar 22, 2018
    Messages:
    156
    I have been searching for a tuner for my CZ 452 American and the more I read, more I get confused. Anyone using a tuner and have any knowledge about where I should start?
     
  2. BigDog1955

    BigDog1955 Member

    Joined:
    Mar 22, 2018
    Messages:
    156
    I guess U all are not going to spend the dollar for a small result?? I'm with U, the tuner on a heavy barrel is not the best result for a buck, but I though I would ask the question :)
     
  3. egd

    egd Member

    Joined:
    Mar 18, 2015
    Messages:
    534
    Location:
    Arkansas
    I'm a pistol shooter, so what is a tuner?
     
  4. BigDog1955

    BigDog1955 Member

    Joined:
    Mar 22, 2018
    Messages:
    156
    Harmonics are developed as each round is fired and will change the position of the muzzle just enough to open up groups. The higher the bullet's velocity and the heavier the bullet, the more harmonics can move the muzzle. Harmonics are fairly predictable …. meaning if you use match grade ammo with very tight velocity spreads, same bullet weights (brand and style too) and bench rest your rifle properly, the muzzle will rotate about the same with each shot fired, thus a tight group. Worst case is when your ammo has a high velocity spread …. typically more than 50 fps from fastest to slowest in a 10 shot string. Match grade ammo velocity spreads are often in single digits. A tuner is weight that is at the end of the barrel to try and reduce the harmonics, movement of the barrel and improve the group size. The barrels on the CZ's are thick enough that most folks don't try them because of the net results that they would receive. I was asking if anyone has used them on CZ rifles in the 22LR, and if they have good results? On pistols the same theory is there but never heard of any being used on a pistol?? Remember there is a lot more to the tuner then this reply, I'm touching the water here :)
     
  5. egd

    egd Member

    Joined:
    Mar 18, 2015
    Messages:
    534
    Location:
    Arkansas
    OK, thanks.
     
  6. Hoser

    Hoser Moderator

    Joined:
    Dec 29, 2002
    Messages:
    1,227
    Location:
    Colorado
    Tuners work on have barrels but they are very much a specialized accessory. They can be a pain to tweak, but they definitely help if you put in the time.

    I have only seen them at benchrest matches and an occasional small bore prone shooter.

    I use one on my Anschutz 2018. Its built into my sight extension tube. And then I made a suppressor adaptor, just cause. Not ISSF legal, but fun.

    pfgfNMy.jpg
     
  7. ColtPythonElite

    ColtPythonElite Member

    Joined:
    Jan 8, 2011
    Messages:
    8,787
    I have seen Harrell tuners tried on a few CZ's....I have yet to see spectacular results.

    I am not downing tuners. I have a Harrell on my benchrest gun. It works well with a little trial and error.
     
  8. BigDog1955

    BigDog1955 Member

    Joined:
    Mar 22, 2018
    Messages:
    156
    I guess with the .750" starting size for most of the tuners, I would have to mill a adaptor for my barrel size .578" to .568" to fit the .750" tuner. I have heard if U spend the time, they will move your groups around, but decreasing the group size is the big ten dollar question??
     
  9. BigDog1955

    BigDog1955 Member

    Joined:
    Mar 22, 2018
    Messages:
    156
    I took my CZ 452 American with the Weaver T36 out to 100 yards yesterday, and shot some Norma Tac-22, which had great chronograph numbers and then shot Eley Club. Finished off with a box of SK Std. +. Boy that is a lot of fun but, found out I need a sway brace to stop the rear bench movement, that 36 power scope fells everything frown.gif ..
    couple of pics of the Blackhills National Forest and the CZ.
    413977139.jpg
    413977143.jpg
    413977144.jpg
     
  10. ColtPythonElite

    ColtPythonElite Member

    Joined:
    Jan 8, 2011
    Messages:
    8,787
    Harrell will bore a tuner to fit your barrel.

    I doubt if you will see much of a group size change on a CZ, though....I am not downing a CZ, either. I have several 452's and have had others. They are fantastic guns. They are accurate for a sporter. They will hold their own in a sporter benchrest match with most sporters of any make. Howerever, putting a tuner on them will never make them competitive with the heavy barrel target guns or custom built bench guns.
     
  11. BigDog1955

    BigDog1955 Member

    Joined:
    Mar 22, 2018
    Messages:
    156
    This target shooting is all I will ever do and I'm happy with my CZ results, all three of my CZ's shoot better then I aim :) Now after all my research I think the tuner isn't a good option for my rifles. Money spent for ammo will be a better move. Here in Rapid City we don't have a rifle range so I have to set up in the forest when I want to shoot, which takes about a half hour, still a great sport and the chronograph lets u see what the ammo was doing for each shot and group :) My wife thinks I'm crazy but when she retires I'm going to get her behind a CZ in the forest and I know she will love it..
     
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice