Tuner

[RM1Rotax]

Anyone using a tuner on a CZ457 At One and which one thanks

 

[tmwinds]

I’m sure someone has tried one. If you shoot competition matches the rifle would not qualify for factory class.

 

[Fuj]

I have a Harrels on my Grandsons at-One..Kind of funny since
I use tuners on other types of rifles that this one was a different
experience......Had the rifle shooting the best with RWS-50. I then
screwed on the tuner. and it still shot fine. Moved the tuner a mark
at a time and nothing was really happening. Once i got to 1/2 turn
out, the groups started to open up, to as much as one inch at 50
yards. Another mark at a time to reach another 1/2 turn, I was doing
some nice 3/8" groups but just a short few marks later those groups
fell apart. Great tune but not a wide one. And what was said about
factory class. It's a no go but.....Here's a thought......Could one not use
the threaded muzzle cap as a tuner and be legal ?? I'm thinking just
throw on a thin washer and test. Keep adding or subtracting washers
for tuning !! What say you ?? It's still just a factory muzzle cap ??

 

[MUP]

I'm sure they'd find an issue with the added washers.

 

[boltfluter]

I have a Harrels on my Grandsons at-One..Kind of funny since
I use tuners on other types of rifles that this one was a different
experience......Had the rifle shooting the best with RWS-50. I then
screwed on the tuner. and it still shot fine. Moved the tuner a mark
at a time and nothing was really happening. Once i got to 1/2 turn
out, the groups started to open up, to as much as one inch at 50
yards. Another mark at a time to reach another 1/2 turn, I was doing
some nice 3/8" groups but just a short few marks later those groups
fell apart. Great tune but not a wide one. And what was said about
factory class. It's a no go but.....Here's a thought......Could one not use
the threaded muzzle cap as a tuner and be legal ?? I'm thinking just
throw on a thin washer and test. Keep adding or subtracting washers
for tuning !! What say you ?? It's still just a factory muzzle cap ??

Don't see why that would not slip under the radar, so to speak. Carry on and keep us posted.
Paul

 

[Hi-NV Shooter]

I have a Harrels on my Grandsons at-One..Kind of funny since
I use tuners on other types of rifles that this one was a different
experience......Had the rifle shooting the best with RWS-50. I then
screwed on the tuner. and it still shot fine. Moved the tuner a mark
at a time and nothing was really happening. Once i got to 1/2 turn
out, the groups started to open up, to as much as one inch at 50
yards. Another mark at a time to reach another 1/2 turn, I was doing
some nice 3/8" groups but just a short few marks later those groups
fell apart. Great tune but not a wide one. And what was said about
factory class. It's a no go but.....Here's a thought......Could one not use
the threaded muzzle cap as a tuner and be legal ?? I'm thinking just
throw on a thin washer and test. Keep adding or subtracting washers
for tuning !! What say you ?? It's still just a factory muzzle cap ??

You can only use what came from the factory. that means no custom or additional pieces added!

Lee

 

[RM1Rotax]

Thanks for the feedback the gun actually shots really well always looking to be a little better but if it’s not legal in factory just saved some money

 

[Hi-NV Shooter]

Thanks for the feedback the gun actually shots really well always looking to be a little better but if it’s not legal in factory just saved some money

No problem, I should add that if a rifle came with a muzzle brake that would need to be removed before being legal too!

Lee

 

[Jonnyofalltrades]

Not sure about other disciplines, but NRL allows the barrel to be threaded(even if it wasn't from factory), and allows use of a thread protector, brake, or suppressor.
I'm assuming that you guys are referring to RFBR?

 

[MarkS]

if you barrel is threaded go with EC V2 tuner, if not threaded go with a Harrell. I have a Harrell on my 455 Varmint, and ECV2 on my Bergara b14R and Tikka T1X.

The Harrell has 500 setting. I started on "O" fire a group and go out one full turn at a time ( 25 settings ) Go all the way to 500. a few marks at a time will take you forever and a ton of ammo. Look at your groups, say 150 and 175 look the best, then you go 5 settings at time between the 2. Then down 1 or 2 setting

The EC V2 tuner has 200 settings. I go 10 settings at a time, then work between them.

 

[PWNolan]

I have a Harrels on my Grandsons at-One..Kind of funny since
I use tuners on other types of rifles that this one was a different
experience......Had the rifle shooting the best with RWS-50. I then
screwed on the tuner. and it still shot fine. Moved the tuner a mark
at a time and nothing was really happening. Once i got to 1/2 turn
out, the groups started to open up, to as much as one inch at 50
yards. Another mark at a time to reach another 1/2 turn, I was doing
some nice 3/8" groups but just a short few marks later those groups
fell apart. Great tune but not a wide one. And what was said about
factory class. It's a no go but.....Here's a thought......Could one not use
the threaded muzzle cap as a tuner and be legal ?? I'm thinking just
throw on a thin washer and test. Keep adding or subtracting washers
for tuning !! What say you ?? It's still just a factory muzzle cap ??

Not enough mass to change anything

On a side note, I replaced the thread cap on my Tikka with a knurled one. When I'd go to a match I'd put the plastic one back on because I didn't want any grief from anyone. After I moved on from Factory class I finally decided to ask Brandon (the ARA factory class rules guy) if the steel cap was ok. He said it shouldn't be a problem. If was made of tungsten is could be

 

[VLNBYR]

Factory Class Guys....Always looking for a way to cheat without being a cheater.

 

[MUP]

Wouldn't that just be gaining an edge legally?