FX liner indexing = issue solved

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Vetmx

Vetmx

Member
Dec 4, 2017
5,878
4,873
Pa, United States
A week or two ago there was a topic about indexing. I posted my groups and said I thought I had a little too much drift to the right as the distance increased. I had indexed my barrel when I first got the gun to see if group size changed at different points but after that, I put a mark on it at 12 o’clock and that was it. Al_Miller suggested that I might be able to index that drift out with indexing. Today was cold but absolutely no wind so I had to shoot something. I shot my Impact at 30, 50 and 100. The groups were tight but were indeed drifting to the right. Did a little indexing, added 10 more inch pounds to my shroud tension and the problem is solved. First pic is 3 shots after indexing that are now low left. Then 3 shots just a smidge high after adjustment.
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Then I fired one at 50. Then I fired the last one at 100 at a spinner. Problem solved. I shot some other stuff at around 100yrds like wood chips laying on the snow and a couple deer turds. The gun is good. The thing I like about this hobby is just when you think you know almost everything, you find out you don’t. I think the more you know the worse it is. You wind up looking way too far into things when it’s really something simple. 
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Then I fired one at 50. Then I fired the last one at 100 at a spinner. Problem solved. I shot some other stuff at around 100yrds like wood chips laying on the snow and a couple deer turds. The gun is good. The thing I like about this hobby is just when you thing you know almost everything, you find out you don’t. I think the more you know the worse it is. You wind up looking way too far into things when it really something simple.
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So true. But it makes arriving at your goal/expectation that much better as well. I just sorted one of my guns today after a good year and 2 months 😑 couldn't be more pleased, though.

Nice shooting, and nice tune as well!
 
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Vetmx,

Glad you got your Impact indexed and drift issues sorted out. It certainly looks like it's shooting great now!

I know a lot of airgunning is trying to limit/control/figure out all the variability that creeps into airguns over time. Whether it be from different conditions(temp, wind, altitude, etc...), different ammo, different tunes, dirty barrels, loosening/tightening up over time(screws, shrounds, moderators, etc...), and a lot of other causes. It is a testament to AGN(and airgun community as a whole) that there are so many great people who are willing to help/share/contribute to solve problems and grow the airgunning sport. The AGN forum has been a wealth knowledge and support for so many.
 
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