rimfire Tuner / Harrell

[Tomiboy]

Hey @Jadams, I'll give you some numbers to chew on.

Here's the rifle:

Here's how it shoots:


The barrel is exactly 26" long, and the end of the harrell tuner to the muzzle is 3.553"

I use my own method, which is loosely modeled on the hopewell method. I'm curious how close you find it to the purdy.

Are you using a Harrel's tuner? If so what number are you on?
Thanks!

 

[Arkansan]

Glad to see Orkan pull this up so i don't have to dig for it. I have the same setup, yet to get to a range. Just checked my tuner set to his dimensions with 1" extension, looks like 243 or close.

 

[Tomiboy]

Where doe one get this 1" extension you speak of?

 

[Arkansan]

I got mine from Harrells.

 

[Williwaw]

Where doe one get this 1" extension you speak of?

Functionally speaking it is more correct to refer and think of this as a weight rather than as an extension.

 

[6.5SH]

Functionally speaking it is more correct to refer and think of this as a weight rather than as an extension.

There are both types, but other than a bloop tube I don't have a link to a 1" all Aluminum one at hand.

 

[Williwaw]

There are both types, but other than a bloop tube I don't have a link to a 1" all Aluminum one at hand.

There are both types but I believe the one in the photo is sold by Harrell as a weight.

 

[Tomiboy]

Harrel's has (2) 1" long ones and (1) 1/2" long one. One of the 1" is steel and 7oz and one is aluminum and 3 oz

steel or aluminum?

 

[Tomiboy]

The 1/2" is steel and is 5 oz

 

[Williwaw]

When I bought my Harrell weights I got a set of three, two steel with both male and female threads and one aluminum with male only.

 

[todde]

With the barrel profiles we use, we start with the 7oz., 1 inch long weight.
Todd

 

[Tomiboy]

Todde is that for a 26" barrel? What profile?

 

[todde]

Typically in the 25 inch and .850-.900 straight profile.
Todd

 

[Tomiboy]

So what would you think I would need for a 26" with a .90 straight profile?

 

[todde]

I would start with the 7oz weight and start tuner at 50. I would expect a tune to be found +or - 20 clicks.
Todd

 

[TreyMeTrey]

Can EC barrel tuners be used for rimfire calibers?

yes they can..Ive had several on barrels of several calibers for a few years. They improved all but one.It shot so good that anything I used hurt it.

 

[Arkansan]

Looks like my chamber search may be over. I just got this test group from Jonathan. 26" Shilen ratchet with Eley Tenex PTG Ultimate EPS Reamer Vudoo action. The chamber has the same specs as the Calfee 2 (.220 no taper) which he says is the one to use with current barrel dimensions. It will be interesting to see how it does with the tuner. I have it set up to start with the number Orkan provided with the Harrell's and 1" weight. I have an assortment of Eley and SK to test with. I have another Shilen with a 1.5 degree leade I chambered since Kevin Nevius recommends this for Lapua on the Rimx that I'll probably let go and use the EPS reamer on my last Shilen to go on the Rimx. I need to do some shooting with it first as well as the GM I have inbound with Eachus chamber.
It's nice to have a gunsmith who takes the time to verify his work and not just machine a blank and send it out.

Finally
After a quick move to TN and realizing it was not going to work, we are back, just north of our last place. Yesterday, I was able to shoot the Vudoo. Basically, I wanted to duplicate Orkan's successful set up, 26" barrel and Harrell's tuner with 1" extension (or weight) and set it to the length he used. I had little time but, basically, using some not so great Eley Contact, the tuner looks like it shrank the groups by about 1/2. , I prefer shooting my Rimx and being able to choose from 3 different barrels. I am going to let the Vudoo go, stick with the Rimx and may even have JElrod do his bolt modification since I have been so happy with his work. The Vudoo shoots great, but I prefer the Rimx action. I also like the fact that my ProX tuner is designed for the shorter barrels I have for the Rimx. It has been an interesting experience and I'm glad I had a chance to try a Vudoo.

This is the 50 yd test target JElrod sent when he finished the barreled action. It is definitely a shooter and I'm sure will find a good home.