I don't have a thimble full of the knowledge of some of you folks . I know you stated your crown looked perfect ....any chance you might be able to re-crown to be sure ?
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Tuning Fliers-at then end of my wits
- Thread starter Khornet
- Start date
I'm sure it could be re-crowned, but I've been having this problem with two different liners. And now three different scopes.
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Even professional golfer get the "yips".... Sorry we can't help you. Wish you could just shoot for enjoyment for a week or so and not get too worked up over the slight imperfections. I switch back to shooting steel when I can't get those tight little groups. I love to hear the ziiip-crack so much that sometime I line the shot up then close my eyes so I can concentrate on the sound alone.
Hope you can get your groove back, Stella.
Hope you can get your groove back, Stella.
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For now I can only offer one more piece of advice and it aligns with what mtnghost said. When I dialed in my Impact, everything is measured and recorded. Even everything barrel related. My liner position, liner tension nut position and my shroud torque. Since I highly doubt liner position, indexing, is your problem, try a little more and a little less torque on the liner tension screw/nut or whatever you want to call it. It is ridiculous that we should have to obsess over all this stuff but that’s the hand we were dealt with this gun. The guys who don’t want to obsess over 20 things just buy Crickets, Taipans, Edguns and so on and live happily ever after.
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Yes, fliers with pellets. Putting the whole project aside until my good scope comes in. Yes, I've written everything down including barrel nut tension, and have varied the tightness of the shroud as well. You should see my notes. It's ridiculous, almost embarrassing, all the stuff I've done and recorded. Really hard to believe this is the 'yips' when the fliers are so wild, but we'll see when the scope comes back. For now, no mas.
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Frank,
I really appreciate someone as accomplished as you are to be so honest about my dream gun.
When I go to bed tonight I'll read your comment again — maybe it will help me to switch out my dream.
Matthias
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Meh. Going fishing. Reminds me of the bumper sticker I saw on a battered VW Bug pulling away from the ER at Portsmouth Naval Hospital in November 1989:
I FEEL SO MUCH BETTER SINCE I GAVE UP HOPE
I FEEL SO MUCH BETTER SINCE I GAVE UP HOPE
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Yanno, if this were a wood stocked rifle I'd think there was a bedding problem. Something is pressing on that barrel and it's not happy. Maybe the barrel assembly is bent. When I first removed the shroud it sure took a lot of torque. Maybe I bent the sleeve? Looks straight to me but who knows. I do feel a tight spot where the O-rings grab when reinserting the liner, about 1/2-2/3 way down. Can a new sleeve be had, or do I have to buy a whole barrel kit?
Another thing: the front barrel block. The one the long screws at the front of the top plate pass through. There is only one rubber ball at the front of the loading block, and it presses on the lower left corner of the front barrel block. So maybe it's torquing the barrel. I just tried reassembling with the barrel in place and the breech open, and all top plate screws firmly home before closing the breech. Either one of those problems would give me fliers with both pellets and slugs, and with different liners. We'll see tomorrow.
Another thing: the front barrel block. The one the long screws at the front of the top plate pass through. There is only one rubber ball at the front of the loading block, and it presses on the lower left corner of the front barrel block. So maybe it's torquing the barrel. I just tried reassembling with the barrel in place and the breech open, and all top plate screws firmly home before closing the breech. Either one of those problems would give me fliers with both pellets and slugs, and with different liners. We'll see tomorrow.
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I was out zeroing my Impact in for the first time today. I was amazed at how 20-30fps difference could cause such a big difference. Maybe when you originally zeroed your rifle in the temp was different than it is now and there is a change in the velocity?
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Frank,
I really appreciate someone as accomplished as you are to be so honest about my dream gun.
When I go to bed tonight I'll read your comment again — maybe it will help me to switch out my dream.
Matthias
Hey, this is the second Impact I’ve owned. I won’t bash it but it’s not a gun for everyone. The idea of an Impact can be more wonderful than the reality of an Impact. It’s like this in many hobbies. Some people like complicated good things while others like simple good things.
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Certainly interesting how some think a particular gun is lacking and full of problems while others think they are great. I guess having options is good.
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See the wear spot on the barrel sleeve?
Out of the gun. There's no corresponding spot on the opposite side of the sleeve.
The transfer port end is on the right in the second pic. With a straightedge against the sleeve and held up against a light, there's a fine line of light visible from the TP end forward, til the point of that wear mark. From there it widens. Sleeve diameter is the same measured over the wear spot and 90 degrees from it. The sleeve is bent, but it wasn't noticeable until I'd taken it in and out of the gun enough times to wear a spot. I'm sure I bent it as I struggled to remove the shroud the first time, about a month ago when I did a CF sleeve on my pellet liner. I've emailed FX about buying a new sleeve instead of a whole barrel kit. Meanwhile I clamped it in a padded vise right at the wear point, after removing liner and liner nut, and gently cranked it, a bit at a time, comparing to the straightedge, until the light line is even. Maybe like a poorly bedded barrel in a wood stock, it was causing fliers. Slides back in the gun easily. If the weather is kind, I'll know tomorrow.
Out of the gun. There's no corresponding spot on the opposite side of the sleeve.
The transfer port end is on the right in the second pic. With a straightedge against the sleeve and held up against a light, there's a fine line of light visible from the TP end forward, til the point of that wear mark. From there it widens. Sleeve diameter is the same measured over the wear spot and 90 degrees from it. The sleeve is bent, but it wasn't noticeable until I'd taken it in and out of the gun enough times to wear a spot. I'm sure I bent it as I struggled to remove the shroud the first time, about a month ago when I did a CF sleeve on my pellet liner. I've emailed FX about buying a new sleeve instead of a whole barrel kit. Meanwhile I clamped it in a padded vise right at the wear point, after removing liner and liner nut, and gently cranked it, a bit at a time, comparing to the straightedge, until the light line is even. Maybe like a poorly bedded barrel in a wood stock, it was causing fliers. Slides back in the gun easily. If the weather is kind, I'll know tomorrow.
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One other thing you might try is wrapping the end of the barrel liner where it goes into the jam nut. I wrap it in some teflon tape so that the liner can't wiggle around inside that nut. Worth a try.
Scott
Scott
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Quite calm here at 0630. Groups are now half the size they were, and while not what they were a month ago, they are much better. No wild fliers, and a flier now is 1/2" away instead of 1 1/2", so now within the range of shooter error or unseen wind. The bend is still there but less severe.
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After more straightening. Tiny breeze just beginning from 9:30. I fired when flags were all still. I think she's back, and any further improvements will have to come from tuning and technique. This group was five rounds at 70 yds with unsorted H&N 23 gr slugs, so sorting by weight as I did before may also help. If I can get a new barrel sleeve I'll slap it in there.
Also, Vetmx and others: the bend was more pronounced when the liner nut was at my usual degree of tightness, and less when looser, but still significant. After straightening the bend does not worsen when I tighten, but I will experiment. I never cranked down hard on the nut anyway, but if there's a bend then excess tightness will certainly exacerbate it.
Also, Vetmx and others: the bend was more pronounced when the liner nut was at my usual degree of tightness, and less when looser, but still significant. After straightening the bend does not worsen when I tighten, but I will experiment. I never cranked down hard on the nut anyway, but if there's a bend then excess tightness will certainly exacerbate it.
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After more straightening. Tiny breeze just beginning from 9:30. I fired when flags were all still. I think she's back, and any further improvements will have to come from tuning and technique. This group was five rounds at 70 yds with unsorted H&N 23 gr slugs, so sorting by weight as I did before may also help. If I can get a new barrel sleeve I'll slap it in there.
Also, Vetmx and others: the bend was more pronounced when the liner nut was at my usual degree of tightness, and less when looser, but still significant. After straightening the bend does not worsen when I tighten, but I will experiment. I never cranked down hard on the nut anyway, but if there's a bend then excess tightness will certainly exacerbate it.
Nice to see that you got it figured out. How tight (I know it's hard to judge) would you say was too tight in your case. Do you think tightening the barrel nut caused the initial problem?
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