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Old 03-28-2011, 06:44 AM
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Harrell tuner...



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Is there a standard procedure for tuning with a Harrell Tuner...

I seem to remember seeing something a while back but can't find it thru search...

Any help will be appreciated...

Bolero
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Old 03-28-2011, 07:45 AM
Don Stith

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You might search for the "HOPEWELL" method. Then you can save yourself a lot of time and ammo and try this:
Shoot 5 rounds off the target
Set tuner at 200
Shoot a three shot group
Come in a full rotation
shoot a three shot group
If better than first group go in another round
If not better: go out two rounds
Go out a round at a time until group starts to open up. Go back to best of the settings and try a group at half revolution in each direction. I look for a setting that is virtually unchanged with 5 clicks in either direction. If Marty would come back, you might get better instructions
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Old 03-28-2011, 07:47 AM
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hopewell method copied from brc originally in the ara news i think

Posted 26 October 2007 - 05:23 AM
Tuner set up instructions.
Taken from a thread at Benchrest Central.
Hope this helps.

I like the Hoehn tuner the best because of the screw on wieights. My Cooper shoots the best with just the 3 oz weight on the tuner but my Anschutz shoots the best with both the 5 and 7 oz weights on the tuner. Each rifle is different and the screw on weights is a real advantage. I don't think the Fudd can accept the screw on weights if this is correct then you can go to a Auto store and buy lead wheel weights with adhesive backing and put them on the outside of your tuner.

Bob
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Dave, or perhaps someone else, did a nice job with explaining this. I did a minimal amount of typo fixing and added a few explanations. Any errors are mine, not Dave's. It works well to do this with a BR target like an RBA, USBR, ARA, with at least 25 different points to aim at (POA):

ADJUSTING YOUR TUNER


1. Set you tuner to "0" and fire two shots.
Turn tuner one complete revolution (25 clicks) and fire two shots, continue this until you reach "100". You now have a 10 shot group, all shot at the same POA.
2. Repeat step one from "100" to "200"
3. Repeat Step one from "200" to "300".
4. Repeat Step one from "300" to "400"
5. Repeat Step one from "400" to "500". You now have five 10-shot groups.
One of the 10-shot groups will show the smallest vertical stringing. You should have used only 50 rounds so far.

Let's say that you find that the "200" to "300" group shows the least vertical stringing.

6. Starting at "200", shoot 2 five shot groups. Shift to a different POA for each group.
7. Repeat at "225", "250", "275" and "300"
8. One of these settings will show a decrease in group size.

Example: "250" showed the smallest group.

9. Now, start at "245" and shoot a five shot group at 245, 247, 249, 251, 253 and 255.
You will locate the "sweet" spot of your rifle barrel.
10. If you have any doubts, start over at Step #6, and redo the testing.


This is also known as "The Hopewell Method"

This post has been edited by recumbent: 26 October 2007 - 05:24 AM
if you go on the archives on here, and benchrest central there's alot of stuff on tuning.

Last edited by tom c.; 03-28-2011 at 07:51 AM.
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Old 03-28-2011, 07:52 AM
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Thanks

Thanks Tom, that is exactly what I am looking for thanks again...

B
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Old 03-28-2011, 09:05 AM
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Bolero: Don gave good advice. Don't dismiss his described method too quickly. It is generally faster than the Hopewell method. They both get the job done. Both are boring to perform. Both should be done over flags in repeatedly good conditions. Once you have it tuned you are done tuning that rifle so make it as painless as possible. bob
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Old 03-28-2011, 09:14 AM
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Don...

Yes.... sorry Don for not acknowledging your post, actually I am going to try your method first...

and thanks for the additional info Bob, appreciated.

B
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Old 03-28-2011, 11:00 AM
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Would doing the tuner set-up indoors be ideal?
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Old 03-28-2011, 11:07 AM
Don Stith

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Indoors is good for tuning. Just don't be surprised if it takes a few clicks one way or the other when you go outside. Some rifles shoot the same indoor or out. All don't. You may have seen my comments on my Hall. It is terrific outside. Not so good inside.
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Old 03-28-2011, 12:06 PM
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sorry about that don, i didn't know if he wanted the full version or not.
and you're right most of the time you always end up at least 150-175 clicks out
to start with.
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Old 06-20-2011, 08:14 PM
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How do you work the weights & slide (noodle) into the equation? Adjust the tuner without the weights, then with one wt., then 2, then the noodle, or ???

I just bought a Harrel tuner with 3 wts. and a J&J short slide, & am a rank novice where tuners are concerned.
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Old 06-20-2011, 09:48 PM
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for basic tuning try the hopewell method on the earlier posts i think 2 or 3.
start out with just the tuner alone. what rifle and barrel make and type of
barrel (straight taper, reverse taper) and how long and wide is it?

Last edited by tom c.; 06-20-2011 at 09:56 PM.
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Old 06-20-2011, 09:52 PM
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Quote:
Originally Posted by tom c. View Post
for basic tuning try the hopewell method on the earlier posts i think 3 or 4.
start out with just the tuner alone.
Thanks for your reply. I've read the Hopewell method & it sounds like a good approach as far as it goes, but it doesn't get into either the accessory weights or the JJ Slide. That's what I'm trying to find out about; how do they fit in.
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Old 06-20-2011, 10:01 PM
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if you got the 3,5, and the 7 oz. weight from harrells
you'll notice some i think it's the 3 and 5 oz weights you
can screw onto the tuner but nothing else onto them.
it would help to know something about your rifle.
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  #14  
Old 06-20-2011, 10:14 PM
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hey lloyd check your pm's. goodnight.
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Old 07-24-2012, 05:39 PM
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Thanks Tom, I'm new to this forum, and didn't have to ask a question you have answered it all ready! My savage mkii shot real good using wolf match.and setting @ 200. got .232, 5 shot groups @ 50 yrds.
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