Hopewell Method-which group

[linekin]

I wouldn't argue in that you will find a decent tune in about every revolution of a Harrell's tuner. The question is it the best one. Thats where its worth doing .
Admittedly, I don't use it either. We all have our preferences as to where we like to "live" with it. Lee likes them light & has said he liked at least in the past to be on the low end of the tuner. I like them between 150-200. You see some incredible shooting rifles with all kinds of crap screwed onto them.
Bottom line, you can find a tune at many different settings.
I mentioned above the sine wave thing I did earlier this year. I'll never try tuning a rifle again without doing it as I think since I've done my rifles more consistent. I believe in the past I've seen small groups & thought it was a good tune but not at the top of the swing. I'm comfortable moving my tuner in the past & since I've done that test I haven't needed to touch it again & have been more consistent each outing. Just sayin'

Keith, glad you were able to find what I have been seeing. I don't know how cool of weather you shoot in but that is where you will see if that setting is truly the one and only. since cooler temperatures lower velocity if your POI doesn't change to a point where you get concerned you got it.

Lee
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Lee, been shooting between 60-85 degrees or so but things are changing fast. I'll see when it gets colder. Don't shoot any matches below 50 as the season will be over but do occasionally shoot in 30 degrees in the winter to get out of the house.

 

[Hi-NV Shooter]

Keith, glad you were able to find what I have been seeing. I don't know how cool of weather you shoot in but that is where you will see if that setting is truly the one and only. since cooler temperatures lower velocity if your POI doesn't change to a point where you get concerned you got it.

Lee

Lee, been shooting between 60-85 degrees or so but things are changing fast. I'll see when it gets colder. Don't shoot any matches below 50 as the season will be over but do occasionally shoot in 30 degrees in the winter to get out of the house.
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Keith looks like you are shooting a rather wide temperature difference if you haven't been seeing a change on how it shoots, and you can shoot multiple lots you probably are at the setting you want.

Lee

 

[Hi-NV Shooter]

Lee has kind of been my mentor with regard to tuning (and lots of other stuff - he has an amazing amount of knowledge and is VERY generous in sharing it). I just put together a new RF repeater w/a Shilen "ratchet" barrel. It shot pretty good without a tuner, using a lot of Lapua CX I bought for my 1413. But I have a standard Harrel's tuner and no rifle for it, so last week I decided to put it on this new rifle. I started from "physical" zero (which actually was 5 or -20 graduations below "ruled 0"). I shot 3-shot groups and moved the tuner 5 graduation per groups. Within 5 groups, I found a "tune"! Moved up another 5 and it went away, moved back down 5 below and it went away, went back and shot 2 more groups and was extremely pleased.

I have tried the "Hopewell" method and think it is a total waste of ammo and time!

Thanks Wayne sounds like the new rifle is shooting great. do you know when you will be getting back the 1413?

Lee

 

[wkdickinson]

Thanks Wayne sounds like the new rifle is shooting great. do you know when you will be getting back the 1413?

Lee

Lee,

Evelio said to allow about 30 days for the work, so maybe mid-Oct.

Wayne

 

[TrxR]

So as you move your tuner you will see the poi move up and down and your looking for the best high group? How many shot per setting and how many clicks between settings on the tuner?

I've got a harrels tuner I need to test and also have their heavy weight but am thinking I should go without the weight.

Yes, below is a pic that shows it & if you rotate the tuner 2 or 3 clicks at a time through a complete revolution, wherever you start you'll see it. I shot 3 at each setting but you can do however many you want. I'm cheap, lol
I initially settled on 185 but went to a match where it wasn't the same shooting rifle & went out to 188. Haven't touched it since, & thats rare for me.
I would try it without the weight 1st but to each their own. Go thru the above both bare & with the weight & see if you can see a difference is all I can say. Its all trial & error.
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Is there a particular reason you started at 125?

 

[linekin]

Yes, below is a pic that shows it & if you rotate the tuner 2 or 3 clicks at a time through a complete revolution, wherever you start you'll see it. I shot 3 at each setting but you can do however many you want. I'm cheap, lol
I initially settled on 185 but went to a match where it wasn't the same shooting rifle & went out to 188. Haven't touched it since, & thats rare for me.
I would try it without the weight 1st but to each their own. Go thru the above both bare & with the weight & see if you can see a difference is all I can say. Its all trial & error.

Is there a particular reason you started at 125?
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I mentioned above we all have our comfort zone. I've had success in the 160-170 range on several .900 straight barrels. I've also been inconsistent which is why I started at 155 on the left side of the target & worked in 1st. Went back to 155 & worked out on the row below.
If I had started below 0 & worked out you'd see the sine wave also You'd see it wherever you start with many small groups,
I'm not saying to disregard the Hopewell method by any means. It will show you the various small groups that form throughout your testing. I just didn't like my inconsistencies & wanted to see where on the sine wave I was with this particular barrel, a 24" 3groove Benchmark so started the test where I did.
Could there be better lower or higher on the tuner?, sure but for now I'm happy with it.
Bottom line, you can do both tests at the same time. Pay attention to the sine wave to be sure your on the top of the swing as I think my inconsistencies were because I'd been shooting somewhere other than that, with some success.
Keith

 

[VLNBYR]

Whatever system you use to tune the most important aspect is that the data you get is statically significant. That means controlling other variables that also affect bullet impact. Not at all easy to do.