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Old 15th June 2009, 05:37 PM
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Default Help pleASE

Leupold 20x50 how much do they shift with temp and how do you deal with it.As over the weekend i am shore that mine shifted 10 yard with a temp rise of 5to 6 deg.is this the norm and is it some thing i have to learn to live with.As i am looking for why i shot so crap at the weekend.
Cheers for any help Don
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Old 15th June 2009, 05:46 PM
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Rich had trouble at the weekend, but the jury is out as to whether it was scope (20-50) or gun.

Did you check the ranges on the plinking range?
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Old 15th June 2009, 06:04 PM
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Hi Don,

Do you range on the targets or the trees ?

I find I get more variation when ranging on targets probably due to the differing light conditions
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Old 15th June 2009, 06:20 PM
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I range on the knot as i find this the best, i checked the ranges afterwards the 45yard board was comeing up as 55yard.Went to Bisley to day the 55yard board was well round past my normal mark,scope temp was 23deg which is the hottes i have shot this scope in.I started in lane 5 my first target came in as 52 1/2 dailed my normal setting gave the wind and hit 12oclock 1/2 inch high .The rest is history.
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Old 15th June 2009, 06:36 PM
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Quote:
Originally Posted by villiers View Post
I range on the knot as i find this the best, i checked the ranges afterwards the 45yard board was comeing up as 55yard.Went to Bisley to day the 55yard board was well round past my normal mark,scope temp was 23deg which is the hottes i have shot this scope in.I started in lane 5 my first target came in as 52 1/2 dailed my normal setting gave the wind and hit 12oclock 1/2 inch high .The rest is history.
Fixed 10 mag give it a Mildot down for 55yds and edge of kill for wind, over it goes
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Old 15th June 2009, 07:24 PM
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Fixed 10 mag give it a Mildot down for 55yds and edge of kill for wind, over it goes
That's strange Chris I give em 2 mildots

Are you zeroing at 45y now ?
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Old 15th June 2009, 07:27 PM
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Originally Posted by villiers View Post
I range on the knot as i find this the best, i checked the ranges afterwards the 45yard board was comeing up as 55yard.Went to Bisley to day the 55yard board was well round past my normal mark,scope temp was 23deg which is the hottes i have shot this scope in.I started in lane 5 my first target came in as 52 1/2 dailed my normal setting gave the wind and hit 12oclock 1/2 inch high .The rest is history.
That sounds like the problem then. If known ranges are shifting, then, that's got to be a major factor.

I got mine to range nicely, but I never had a chance to use it all year around as I kept going back to my fisher price one.

I looked through rich's and got 45 at 50... but then those white boards threw mine forward by 2.5 yds and I only got them on the money when I went off the stumps they were nailed to. I also had fun and games with the strings, as many had lost their frays, and I really need to have something in the order of a single strand or a spider's web to be sure, else I can be 2.5yds out, at least.

I wasn't used to rich's scope to say whether it was out or just the way i was using it.
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Old 15th June 2009, 07:47 PM
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Not pertaining particularly to the scope in question but as well as temperature don't discount light conditions as a contributing factor. I've found that rangefinding can vary between days that are bright or gloomy when temperatures are actually the same. Sometimes I really hate FT and particularly FT scopes!
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Old 15th June 2009, 07:56 PM
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That's strange Chris I give em 2 mildots

Are you zeroing at 45y now ?
Me to Pete, hmmmm is there something big chris isnt telling us
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Old 15th June 2009, 08:04 PM
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28ftlbis what i would have to run my gun at to only use one mil dot hold over.Chair gun sorry
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