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tuners

wzee

Just got my new tuner for a 22 cal match gun ! with all those numbers on the tuner were do you start?
 
Well, there's a few different ways to find a good tune.
The Purdy Prescription based on length is shown here:
http://www.rimfirecentral.com/forums/showthread.php?t=544427
Or you can google the Hopewell method. Its basicly a trial & error going up thru the settings.
Me, I start at 100 & work out in 25 click increments.
I don't have a rifle with a setting over 200. But, their all the same basic length & dia. barrels too.
I shoot 2 shot groups at 1st & when I start seeing the 2 shots real close I'l shoot a 3rd to be sure. Then I'll adjust in smaller increments.
Some shooters I've heard can see a difference in a click or two. Not me. Probably my rifles aren't perfectly tuned. But they're real close.
Good luck!
Keith
 
linekin said:
Well, there's a few different ways to find a good tune.
The Purdy Prescription based on length is shown here:
http://www.rimfirecentral.com/forums/showthread.php?t=544427
Or you can google the Hopewell method. Its basicly a trial & error going up thru the settings.
Me, I start at 100 & work out in 25 click increments.
I don't have a rifle with a setting over 200. But, their all the same basic length & dia. barrels too.
I shoot 2 shot groups at 1st & when I start seeing the 2 shots real close I'l shoot a 3rd to be sure. Then I'll adjust in smaller increments.
Some shooters I've heard can see a difference in a click or two. Not me. Probably my rifles aren't perfectly tuned. But they're real close.
Good luck!
Keith
Click to expand...
After you go with all the settings then you change lot or brand you along with weather change you have to do it again. Rim fire is very expensive sport if your going to win.
You will find two or three good tunes per turn. I recommend 2 shots per setting .
Larry
 
This is how I did it, and I have the Harrells tuner. install tuner and screw it in all the way until it stops then back it off 1 complete revolution, then start shootin 3 shot groups turning the tuner out 2-3 clicks each 3 shot groups. you will see it tighten up when you get a good tune for that lot of ammo, keep a book of settings for each lot of ammo. your base entry will be 1 full revolution out + the number your on. I hope I explained that so its clear. My tuner shoots well with Eley Edge, and Eley Black Box and theres only 5 clicks of adjustment between the two types of ammo.
 
riverwolf1 said:
This is how I did it, and I have the Harrells tuner. install tuner and screw it in all the way until it stops then back it off 1 complete revolution, then start shootin 3 shot groups turning the tuner out 2-3 clicks each 3 shot groups. you will see it tighten up when you get a good tune for that lot of ammo, keep a book of settings for each lot of ammo. your base entry will be 1 full revolution out + the number your on. I hope I explained that so its clear. My tuner shoots well with Eley Edge, and Eley Black Box and theres only 5 clicks of adjustment between the two types of ammo.
Click to expand...
With a indexing the clicks never end up being a very small movement . It is a hit and miss movement. In one fully turn you will find a tune it mite not be the best . As far as number of marks between brands it will depend on the lotto of each. Larry
 
savagedasher said:
With a indexing the clicks never end up being a very small movement . It is a hit and miss movement. In one fully turn you will find a tune it mite not be the best . As far as number of marks between brands it will depend on the lotto of each. Larry
Click to expand...
Tuners work the same on both rim fire and center fire . Only with your at the mercy of the manfacture of the ammunition with rim fire. Center fire You can change the bullet speed . I have found the closer you can keep the bullet speed the better the tune . Larry
 
Once you get your rifle tuned, you never need to move it again, even changing lots of ammo, and weather. One of my tests after I think I have it tuned, is to shoot to slowest ammo I have then shoot the fastest. If it groups both well you may have it. POI will be a little off, but it should group well. Forget about the speed on the eley boxes, they are not close and don't corispond in any way. Chronograph some and see for yourself. I've had ammo marked 1082fps that was actually going 1049 and a lot marked 1052fps that actually shot 1077. Beware of the "fake tune". This is where you will shoot little tiny groups in a no wind condition, but it will fall apart when the wind blows. Don't stop tuning as soon as you see it "bug hole", You will find 3-4 different settings that shoot well, but only one is the true sweet spot. With a barrel over .875 DIA, I started useing my weight stack method. Dan Killough sells a set of stackable weighs. Set tuner to 50 then screw in a weight and shoot. Then another.,And another. After seeing it tighten up with a certain amount of weight, then start fine tuning in and out. The reason I go out 25-50 to start is so I have room to come back in with the weight it likes. Also if you hit a tune that shoots small, but the POI is way off, I've found this to be a fake tune, it looks good and your tempted to stop and sight it in, but for some reason that tune usually falls apart in the wind. This has been the fastest way I have found to get one going. Good shooting and have fun!
 
Hopewell method worked well for me. I shoot F-class smallbore and have found that a tuner works very well. Once you find the sweet spot (be prepared to shoot ALOT of ammo testing) you can see with absolute certainty how adjusting the tuner a few clicks either way changes the group size vertically or horizontally. During competition I routinely moved the tuner as the temp warmed up during the day to maintain my group size.
 
ttfreestyle said:
So your saying your tuner will move your load up and down or sideways , whichever you want it to do? Did I understand correctly? Thanks
Click to expand...
That is what all tuners do . It not what I want it to do but that is what everyone does to tune. With a tuner I can make the change without all the work. Larry
 
Tuners will not remove horizontal. If your seeing horizontal in your group you have a rifle, ammo, or a setup problem. At least that's been my experience.
Larry, you've said a few things that lead me to believe your a cf guy with a cf mindset. That's fine, I'm the opposite. A rf guy. What you've said about detents, & " You will find two or three good tunes per turn" has not been anything I've ever experienced or heard of with the Harrell's tuner I think we're speaking of.
Not wanting an argument or anything, I just don't feel that's correct. At least not with a rf gun.

Keith
 
linekin said:
Tuners will not remove horizontal. If your seeing horizontal in your group you have a rifle, ammo, or a setup problem. At least that's been my experience.
Larry, you've said a few things that lead me to believe your a cf guy with a cf mindset. That's fine, I'm the opposite. A rf guy. What you've said about detents, & " You will find two or three good tunes per turn" has not been anything I've ever experienced or heard of with the Harrell's tuner I think we're speaking of.
Not wanting an argument or anything, I just don't feel that's correct. At least not with a rf gun.

Keith
Click to expand...
Keith believe this . I have a friend that let us cut threads on a 22rim fire barrel . It was 12 to 15 x on a good day. Put a tuner with a brake got the x count up to the middle twentys . But always would through a couple three 9 .
He will be back this winter With a barrel that shoot's 25 x in good conditions and we will . Try to improve it . I can't name one rimfire shooter that would Someone thread a rim fire barrel . Let alone one with a high x count . Larry
 
savagedasher said:
Keith believe this . I have a friend that let us cut threads on a 22rim fire barrel . It was 12 to 15 x on a good day. Put a tuner with a brake got the x count up to the middle twentys . But always would through a couple three 9 .
He will be back this winter With a barrel that shoot's 25 x in good conditions and we will . Try to improve it . I can't name one rimfire shooter that would Someone thread a rim fire barrel . Let alone one with a high x count . Larry
Click to expand...


Translation Team up!
 
Eddie Harren said:
Translation Team up!
Click to expand...
Rim fire shooters are very stuck in their ways. The top shooters will buy cases of ammo just to find a brand Machine number date and speed . They never leave a stone unturned.
Tuners That's their game .
Center fire is different
Rim fire you have to find the best ammunition with the speed the barrels likes and finish the tune with a tuner .
Why should center fire be different? Only reason I can think of is because They Can .
Personally I think rim fire thinking has made me a better shooter My loads I want to have very low Es .When. I get that
the same time for the tuner to finish the job, Larry
 
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