Barrel - Rifle Tuners

[remington jim]

Any one on here using a Barrel Tuner ? I see a bunch of fellows using them on F class rifles .
I’m having a new PRC F open rifle being built so I have an Eric Cortina V3 tuner coming to try on it .also purchased an adapter to install it on a 5/8 threaded barrel .
I’m interested in your Opinions and Tuner brands .

 

[9.3 Hunter]

Jim, they work and will dial loads in to the most perfect for that rifle. I reload for all mine, and mostly have good accurate loads. However, 3 of my shooters have V3 Cortina Tuners to get even more out of them ...

It also allows folks to use whatever factory ammo they can get and then dial that ammo in ... who do not reload.

 

[sonichanxiao]

Form my experience, it does not make significant difference if you reload already and using a heavy contour barrel. The weight of the tuner is not that significant comparing to the barrel weight.
But for rimfire, it appears helping shrink the group size.